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Added README.md appinfo/info.xml appinfo/signature.json lib/Controller/AuthorApiController.php and the providers directory
DoubleBastionAdmin authored on 20/08/2022 16:33:00
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+<?php |
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+ |
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+if (class_exists('ParagonIE_Sodium_Crypto', false)) {
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+ return; |
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+} |
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+ |
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+/** |
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+ * Class ParagonIE_Sodium_Crypto |
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+ * |
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+ * ATTENTION! |
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+ * |
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+ * If you are using this library, you should be using |
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+ * ParagonIE_Sodium_Compat in your code, not this class. |
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+ */ |
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+abstract class ParagonIE_Sodium_Crypto |
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+{
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+ const aead_chacha20poly1305_KEYBYTES = 32; |
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+ const aead_chacha20poly1305_NSECBYTES = 0; |
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+ const aead_chacha20poly1305_NPUBBYTES = 8; |
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+ const aead_chacha20poly1305_ABYTES = 16; |
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+ |
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+ const aead_chacha20poly1305_IETF_KEYBYTES = 32; |
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+ const aead_chacha20poly1305_IETF_NSECBYTES = 0; |
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+ const aead_chacha20poly1305_IETF_NPUBBYTES = 12; |
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+ const aead_chacha20poly1305_IETF_ABYTES = 16; |
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+ |
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+ const aead_xchacha20poly1305_IETF_KEYBYTES = 32; |
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+ const aead_xchacha20poly1305_IETF_NSECBYTES = 0; |
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+ const aead_xchacha20poly1305_IETF_NPUBBYTES = 24; |
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+ const aead_xchacha20poly1305_IETF_ABYTES = 16; |
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+ |
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+ const box_curve25519xsalsa20poly1305_SEEDBYTES = 32; |
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+ const box_curve25519xsalsa20poly1305_PUBLICKEYBYTES = 32; |
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+ const box_curve25519xsalsa20poly1305_SECRETKEYBYTES = 32; |
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+ const box_curve25519xsalsa20poly1305_BEFORENMBYTES = 32; |
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+ const box_curve25519xsalsa20poly1305_NONCEBYTES = 24; |
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+ const box_curve25519xsalsa20poly1305_MACBYTES = 16; |
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+ const box_curve25519xsalsa20poly1305_BOXZEROBYTES = 16; |
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+ const box_curve25519xsalsa20poly1305_ZEROBYTES = 32; |
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+ |
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+ const onetimeauth_poly1305_BYTES = 16; |
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+ const onetimeauth_poly1305_KEYBYTES = 32; |
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+ |
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+ const secretbox_xsalsa20poly1305_KEYBYTES = 32; |
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+ const secretbox_xsalsa20poly1305_NONCEBYTES = 24; |
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+ const secretbox_xsalsa20poly1305_MACBYTES = 16; |
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+ const secretbox_xsalsa20poly1305_BOXZEROBYTES = 16; |
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+ const secretbox_xsalsa20poly1305_ZEROBYTES = 32; |
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+ |
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+ const secretbox_xchacha20poly1305_KEYBYTES = 32; |
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+ const secretbox_xchacha20poly1305_NONCEBYTES = 24; |
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+ const secretbox_xchacha20poly1305_MACBYTES = 16; |
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+ const secretbox_xchacha20poly1305_BOXZEROBYTES = 16; |
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+ const secretbox_xchacha20poly1305_ZEROBYTES = 32; |
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+ |
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+ const stream_salsa20_KEYBYTES = 32; |
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+ |
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+ /** |
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+ * AEAD Decryption with ChaCha20-Poly1305 |
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+ * |
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+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
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+ * |
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+ * @param string $message |
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+ * @param string $ad |
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+ * @param string $nonce |
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+ * @param string $key |
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+ * @return string |
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+ * @throws SodiumException |
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+ * @throws TypeError |
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+ */ |
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+ public static function aead_chacha20poly1305_decrypt( |
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+ $message = '', |
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+ $ad = '', |
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+ $nonce = '', |
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+ $key = '' |
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+ ) {
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+ /** @var int $len - Length of message (ciphertext + MAC) */ |
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+ $len = ParagonIE_Sodium_Core_Util::strlen($message); |
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+ |
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+ /** @var int $clen - Length of ciphertext */ |
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+ $clen = $len - self::aead_chacha20poly1305_ABYTES; |
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+ |
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+ /** @var int $adlen - Length of associated data */ |
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+ $adlen = ParagonIE_Sodium_Core_Util::strlen($ad); |
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+ |
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+ /** @var string $mac - Message authentication code */ |
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+ $mac = ParagonIE_Sodium_Core_Util::substr( |
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+ $message, |
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+ $clen, |
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+ self::aead_chacha20poly1305_ABYTES |
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+ ); |
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+ |
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+ /** @var string $ciphertext - The encrypted message (sans MAC) */ |
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+ $ciphertext = ParagonIE_Sodium_Core_Util::substr($message, 0, $clen); |
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+ |
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+ /** @var string The first block of the chacha20 keystream, used as a poly1305 key */ |
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+ $block0 = ParagonIE_Sodium_Core_ChaCha20::stream( |
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+ 32, |
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+ $nonce, |
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+ $key |
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+ ); |
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+ |
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+ /* Recalculate the Poly1305 authentication tag (MAC): */ |
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+ $state = new ParagonIE_Sodium_Core_Poly1305_State($block0); |
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+ try {
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+ ParagonIE_Sodium_Compat::memzero($block0); |
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+ } catch (SodiumException $ex) {
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+ $block0 = null; |
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+ } |
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+ $state->update($ad); |
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+ $state->update(ParagonIE_Sodium_Core_Util::store64_le($adlen)); |
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+ $state->update($ciphertext); |
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+ $state->update(ParagonIE_Sodium_Core_Util::store64_le($clen)); |
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+ $computed_mac = $state->finish(); |
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+ |
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+ /* Compare the given MAC with the recalculated MAC: */ |
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+ if (!ParagonIE_Sodium_Core_Util::verify_16($computed_mac, $mac)) {
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+ throw new SodiumException('Invalid MAC');
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+ } |
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+ |
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+ // Here, we know that the MAC is valid, so we decrypt and return the plaintext |
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+ return ParagonIE_Sodium_Core_ChaCha20::streamXorIc( |
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+ $ciphertext, |
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+ $nonce, |
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+ $key, |
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+ ParagonIE_Sodium_Core_Util::store64_le(1) |
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+ ); |
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+ } |
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+ |
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+ /** |
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+ * AEAD Encryption with ChaCha20-Poly1305 |
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+ * |
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+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
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+ * |
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+ * @param string $message |
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+ * @param string $ad |
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+ * @param string $nonce |
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+ * @param string $key |
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+ * @return string |
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+ * @throws SodiumException |
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+ * @throws TypeError |
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+ */ |
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+ public static function aead_chacha20poly1305_encrypt( |
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+ $message = '', |
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+ $ad = '', |
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+ $nonce = '', |
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+ $key = '' |
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+ ) {
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+ /** @var int $len - Length of the plaintext message */ |
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+ $len = ParagonIE_Sodium_Core_Util::strlen($message); |
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+ |
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+ /** @var int $adlen - Length of the associated data */ |
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+ $adlen = ParagonIE_Sodium_Core_Util::strlen($ad); |
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+ |
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+ /** @var string The first block of the chacha20 keystream, used as a poly1305 key */ |
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+ $block0 = ParagonIE_Sodium_Core_ChaCha20::stream( |
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+ 32, |
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+ $nonce, |
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+ $key |
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+ ); |
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+ $state = new ParagonIE_Sodium_Core_Poly1305_State($block0); |
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+ try {
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+ ParagonIE_Sodium_Compat::memzero($block0); |
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+ } catch (SodiumException $ex) {
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+ $block0 = null; |
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+ } |
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+ |
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+ /** @var string $ciphertext - Raw encrypted data */ |
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+ $ciphertext = ParagonIE_Sodium_Core_ChaCha20::streamXorIc( |
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+ $message, |
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+ $nonce, |
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+ $key, |
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+ ParagonIE_Sodium_Core_Util::store64_le(1) |
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+ ); |
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+ |
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+ $state->update($ad); |
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+ $state->update(ParagonIE_Sodium_Core_Util::store64_le($adlen)); |
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+ $state->update($ciphertext); |
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+ $state->update(ParagonIE_Sodium_Core_Util::store64_le($len)); |
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+ return $ciphertext . $state->finish(); |
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+ } |
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+ |
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+ /** |
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+ * AEAD Decryption with ChaCha20-Poly1305, IETF mode (96-bit nonce) |
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+ * |
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+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
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+ * |
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+ * @param string $message |
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+ * @param string $ad |
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+ * @param string $nonce |
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+ * @param string $key |
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+ * @return string |
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+ * @throws SodiumException |
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+ * @throws TypeError |
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+ */ |
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+ public static function aead_chacha20poly1305_ietf_decrypt( |
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+ $message = '', |
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+ $ad = '', |
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+ $nonce = '', |
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+ $key = '' |
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+ ) {
|
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+ /** @var int $adlen - Length of associated data */ |
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+ $adlen = ParagonIE_Sodium_Core_Util::strlen($ad); |
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+ |
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+ /** @var int $len - Length of message (ciphertext + MAC) */ |
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+ $len = ParagonIE_Sodium_Core_Util::strlen($message); |
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+ |
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+ /** @var int $clen - Length of ciphertext */ |
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+ $clen = $len - self::aead_chacha20poly1305_IETF_ABYTES; |
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+ |
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+ /** @var string The first block of the chacha20 keystream, used as a poly1305 key */ |
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+ $block0 = ParagonIE_Sodium_Core_ChaCha20::ietfStream( |
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+ 32, |
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+ $nonce, |
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+ $key |
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+ ); |
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+ |
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+ /** @var string $mac - Message authentication code */ |
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+ $mac = ParagonIE_Sodium_Core_Util::substr( |
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+ $message, |
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+ $len - self::aead_chacha20poly1305_IETF_ABYTES, |
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+ self::aead_chacha20poly1305_IETF_ABYTES |
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+ ); |
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+ |
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+ /** @var string $ciphertext - The encrypted message (sans MAC) */ |
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+ $ciphertext = ParagonIE_Sodium_Core_Util::substr( |
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+ $message, |
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+ 0, |
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+ $len - self::aead_chacha20poly1305_IETF_ABYTES |
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+ ); |
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+ |
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+ /* Recalculate the Poly1305 authentication tag (MAC): */ |
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+ $state = new ParagonIE_Sodium_Core_Poly1305_State($block0); |
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+ try {
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+ ParagonIE_Sodium_Compat::memzero($block0); |
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+ } catch (SodiumException $ex) {
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+ $block0 = null; |
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+ } |
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+ $state->update($ad); |
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+ $state->update(str_repeat("\x00", ((0x10 - $adlen) & 0xf)));
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+ $state->update($ciphertext); |
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+ $state->update(str_repeat("\x00", (0x10 - $clen) & 0xf));
|
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+ $state->update(ParagonIE_Sodium_Core_Util::store64_le($adlen)); |
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+ $state->update(ParagonIE_Sodium_Core_Util::store64_le($clen)); |
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+ $computed_mac = $state->finish(); |
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+ |
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+ /* Compare the given MAC with the recalculated MAC: */ |
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+ if (!ParagonIE_Sodium_Core_Util::verify_16($computed_mac, $mac)) {
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+ throw new SodiumException('Invalid MAC');
|
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+ } |
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+ |
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+ // Here, we know that the MAC is valid, so we decrypt and return the plaintext |
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+ return ParagonIE_Sodium_Core_ChaCha20::ietfStreamXorIc( |
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+ $ciphertext, |
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+ $nonce, |
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+ $key, |
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+ ParagonIE_Sodium_Core_Util::store64_le(1) |
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+ ); |
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+ } |
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+ |
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+ /** |
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+ * AEAD Encryption with ChaCha20-Poly1305, IETF mode (96-bit nonce) |
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+ * |
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+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
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+ * |
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+ * @param string $message |
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+ * @param string $ad |
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+ * @param string $nonce |
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+ * @param string $key |
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+ * @return string |
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+ * @throws SodiumException |
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+ * @throws TypeError |
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+ */ |
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+ public static function aead_chacha20poly1305_ietf_encrypt( |
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+ $message = '', |
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+ $ad = '', |
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+ $nonce = '', |
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+ $key = '' |
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+ ) {
|
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+ /** @var int $len - Length of the plaintext message */ |
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+ $len = ParagonIE_Sodium_Core_Util::strlen($message); |
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+ |
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| 283 |
+ /** @var int $adlen - Length of the associated data */ |
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+ $adlen = ParagonIE_Sodium_Core_Util::strlen($ad); |
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+ |
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+ /** @var string The first block of the chacha20 keystream, used as a poly1305 key */ |
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+ $block0 = ParagonIE_Sodium_Core_ChaCha20::ietfStream( |
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+ 32, |
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+ $nonce, |
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+ $key |
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| 291 |
+ ); |
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+ $state = new ParagonIE_Sodium_Core_Poly1305_State($block0); |
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+ try {
|
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+ ParagonIE_Sodium_Compat::memzero($block0); |
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+ } catch (SodiumException $ex) {
|
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+ $block0 = null; |
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| 297 |
+ } |
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| 298 |
+ |
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| 299 |
+ /** @var string $ciphertext - Raw encrypted data */ |
|
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+ $ciphertext = ParagonIE_Sodium_Core_ChaCha20::ietfStreamXorIc( |
|
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+ $message, |
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+ $nonce, |
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+ $key, |
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+ ParagonIE_Sodium_Core_Util::store64_le(1) |
|
| 305 |
+ ); |
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| 306 |
+ |
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| 307 |
+ $state->update($ad); |
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+ $state->update(str_repeat("\x00", ((0x10 - $adlen) & 0xf)));
|
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+ $state->update($ciphertext); |
|
| 310 |
+ $state->update(str_repeat("\x00", ((0x10 - $len) & 0xf)));
|
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+ $state->update(ParagonIE_Sodium_Core_Util::store64_le($adlen)); |
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+ $state->update(ParagonIE_Sodium_Core_Util::store64_le($len)); |
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| 313 |
+ return $ciphertext . $state->finish(); |
|
| 314 |
+ } |
|
| 315 |
+ |
|
| 316 |
+ /** |
|
| 317 |
+ * AEAD Decryption with ChaCha20-Poly1305, IETF mode (96-bit nonce) |
|
| 318 |
+ * |
|
| 319 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 320 |
+ * |
|
| 321 |
+ * @param string $message |
|
| 322 |
+ * @param string $ad |
|
| 323 |
+ * @param string $nonce |
|
| 324 |
+ * @param string $key |
|
| 325 |
+ * @return string |
|
| 326 |
+ * @throws SodiumException |
|
| 327 |
+ * @throws TypeError |
|
| 328 |
+ */ |
|
| 329 |
+ public static function aead_xchacha20poly1305_ietf_decrypt( |
|
| 330 |
+ $message = '', |
|
| 331 |
+ $ad = '', |
|
| 332 |
+ $nonce = '', |
|
| 333 |
+ $key = '' |
|
| 334 |
+ ) {
|
|
| 335 |
+ $subkey = ParagonIE_Sodium_Core_HChaCha20::hChaCha20( |
|
| 336 |
+ ParagonIE_Sodium_Core_Util::substr($nonce, 0, 16), |
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| 337 |
+ $key |
|
| 338 |
+ ); |
|
| 339 |
+ $nonceLast = "\x00\x00\x00\x00" . |
|
| 340 |
+ ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8); |
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| 341 |
+ |
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| 342 |
+ return self::aead_chacha20poly1305_ietf_decrypt($message, $ad, $nonceLast, $subkey); |
|
| 343 |
+ } |
|
| 344 |
+ |
|
| 345 |
+ /** |
|
| 346 |
+ * AEAD Encryption with ChaCha20-Poly1305, IETF mode (96-bit nonce) |
|
| 347 |
+ * |
|
| 348 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 349 |
+ * |
|
| 350 |
+ * @param string $message |
|
| 351 |
+ * @param string $ad |
|
| 352 |
+ * @param string $nonce |
|
| 353 |
+ * @param string $key |
|
| 354 |
+ * @return string |
|
| 355 |
+ * @throws SodiumException |
|
| 356 |
+ * @throws TypeError |
|
| 357 |
+ */ |
|
| 358 |
+ public static function aead_xchacha20poly1305_ietf_encrypt( |
|
| 359 |
+ $message = '', |
|
| 360 |
+ $ad = '', |
|
| 361 |
+ $nonce = '', |
|
| 362 |
+ $key = '' |
|
| 363 |
+ ) {
|
|
| 364 |
+ $subkey = ParagonIE_Sodium_Core_HChaCha20::hChaCha20( |
|
| 365 |
+ ParagonIE_Sodium_Core_Util::substr($nonce, 0, 16), |
|
| 366 |
+ $key |
|
| 367 |
+ ); |
|
| 368 |
+ $nonceLast = "\x00\x00\x00\x00" . |
|
| 369 |
+ ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8); |
|
| 370 |
+ |
|
| 371 |
+ return self::aead_chacha20poly1305_ietf_encrypt($message, $ad, $nonceLast, $subkey); |
|
| 372 |
+ } |
|
| 373 |
+ |
|
| 374 |
+ /** |
|
| 375 |
+ * HMAC-SHA-512-256 (a.k.a. the leftmost 256 bits of HMAC-SHA-512) |
|
| 376 |
+ * |
|
| 377 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 378 |
+ * |
|
| 379 |
+ * @param string $message |
|
| 380 |
+ * @param string $key |
|
| 381 |
+ * @return string |
|
| 382 |
+ * @throws TypeError |
|
| 383 |
+ */ |
|
| 384 |
+ public static function auth($message, $key) |
|
| 385 |
+ {
|
|
| 386 |
+ return ParagonIE_Sodium_Core_Util::substr( |
|
| 387 |
+ hash_hmac('sha512', $message, $key, true),
|
|
| 388 |
+ 0, |
|
| 389 |
+ 32 |
|
| 390 |
+ ); |
|
| 391 |
+ } |
|
| 392 |
+ |
|
| 393 |
+ /** |
|
| 394 |
+ * HMAC-SHA-512-256 validation. Constant-time via hash_equals(). |
|
| 395 |
+ * |
|
| 396 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 397 |
+ * |
|
| 398 |
+ * @param string $mac |
|
| 399 |
+ * @param string $message |
|
| 400 |
+ * @param string $key |
|
| 401 |
+ * @return bool |
|
| 402 |
+ * @throws SodiumException |
|
| 403 |
+ * @throws TypeError |
|
| 404 |
+ */ |
|
| 405 |
+ public static function auth_verify($mac, $message, $key) |
|
| 406 |
+ {
|
|
| 407 |
+ return ParagonIE_Sodium_Core_Util::hashEquals( |
|
| 408 |
+ $mac, |
|
| 409 |
+ self::auth($message, $key) |
|
| 410 |
+ ); |
|
| 411 |
+ } |
|
| 412 |
+ |
|
| 413 |
+ /** |
|
| 414 |
+ * X25519 key exchange followed by XSalsa20Poly1305 symmetric encryption |
|
| 415 |
+ * |
|
| 416 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 417 |
+ * |
|
| 418 |
+ * @param string $plaintext |
|
| 419 |
+ * @param string $nonce |
|
| 420 |
+ * @param string $keypair |
|
| 421 |
+ * @return string |
|
| 422 |
+ * @throws SodiumException |
|
| 423 |
+ * @throws TypeError |
|
| 424 |
+ */ |
|
| 425 |
+ public static function box($plaintext, $nonce, $keypair) |
|
| 426 |
+ {
|
|
| 427 |
+ $c = self::secretbox( |
|
| 428 |
+ $plaintext, |
|
| 429 |
+ $nonce, |
|
| 430 |
+ self::box_beforenm( |
|
| 431 |
+ self::box_secretkey($keypair), |
|
| 432 |
+ self::box_publickey($keypair) |
|
| 433 |
+ ) |
|
| 434 |
+ ); |
|
| 435 |
+ return $c; |
|
| 436 |
+ } |
|
| 437 |
+ |
|
| 438 |
+ /** |
|
| 439 |
+ * X25519-XSalsa20-Poly1305 with one ephemeral X25519 keypair. |
|
| 440 |
+ * |
|
| 441 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 442 |
+ * |
|
| 443 |
+ * @param string $message |
|
| 444 |
+ * @param string $publicKey |
|
| 445 |
+ * @return string |
|
| 446 |
+ * @throws SodiumException |
|
| 447 |
+ * @throws TypeError |
|
| 448 |
+ */ |
|
| 449 |
+ public static function box_seal($message, $publicKey) |
|
| 450 |
+ {
|
|
| 451 |
+ /** @var string $ephemeralKeypair */ |
|
| 452 |
+ $ephemeralKeypair = self::box_keypair(); |
|
| 453 |
+ |
|
| 454 |
+ /** @var string $ephemeralSK */ |
|
| 455 |
+ $ephemeralSK = self::box_secretkey($ephemeralKeypair); |
|
| 456 |
+ |
|
| 457 |
+ /** @var string $ephemeralPK */ |
|
| 458 |
+ $ephemeralPK = self::box_publickey($ephemeralKeypair); |
|
| 459 |
+ |
|
| 460 |
+ /** @var string $nonce */ |
|
| 461 |
+ $nonce = self::generichash( |
|
| 462 |
+ $ephemeralPK . $publicKey, |
|
| 463 |
+ '', |
|
| 464 |
+ 24 |
|
| 465 |
+ ); |
|
| 466 |
+ |
|
| 467 |
+ /** @var string $keypair - The combined keypair used in crypto_box() */ |
|
| 468 |
+ $keypair = self::box_keypair_from_secretkey_and_publickey($ephemeralSK, $publicKey); |
|
| 469 |
+ |
|
| 470 |
+ /** @var string $ciphertext Ciphertext + MAC from crypto_box */ |
|
| 471 |
+ $ciphertext = self::box($message, $nonce, $keypair); |
|
| 472 |
+ try {
|
|
| 473 |
+ ParagonIE_Sodium_Compat::memzero($ephemeralKeypair); |
|
| 474 |
+ ParagonIE_Sodium_Compat::memzero($ephemeralSK); |
|
| 475 |
+ ParagonIE_Sodium_Compat::memzero($nonce); |
|
| 476 |
+ } catch (SodiumException $ex) {
|
|
| 477 |
+ $ephemeralKeypair = null; |
|
| 478 |
+ $ephemeralSK = null; |
|
| 479 |
+ $nonce = null; |
|
| 480 |
+ } |
|
| 481 |
+ return $ephemeralPK . $ciphertext; |
|
| 482 |
+ } |
|
| 483 |
+ |
|
| 484 |
+ /** |
|
| 485 |
+ * Opens a message encrypted via box_seal(). |
|
| 486 |
+ * |
|
| 487 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 488 |
+ * |
|
| 489 |
+ * @param string $message |
|
| 490 |
+ * @param string $keypair |
|
| 491 |
+ * @return string |
|
| 492 |
+ * @throws SodiumException |
|
| 493 |
+ * @throws TypeError |
|
| 494 |
+ */ |
|
| 495 |
+ public static function box_seal_open($message, $keypair) |
|
| 496 |
+ {
|
|
| 497 |
+ /** @var string $ephemeralPK */ |
|
| 498 |
+ $ephemeralPK = ParagonIE_Sodium_Core_Util::substr($message, 0, 32); |
|
| 499 |
+ |
|
| 500 |
+ /** @var string $ciphertext (ciphertext + MAC) */ |
|
| 501 |
+ $ciphertext = ParagonIE_Sodium_Core_Util::substr($message, 32); |
|
| 502 |
+ |
|
| 503 |
+ /** @var string $secretKey */ |
|
| 504 |
+ $secretKey = self::box_secretkey($keypair); |
|
| 505 |
+ |
|
| 506 |
+ /** @var string $publicKey */ |
|
| 507 |
+ $publicKey = self::box_publickey($keypair); |
|
| 508 |
+ |
|
| 509 |
+ /** @var string $nonce */ |
|
| 510 |
+ $nonce = self::generichash( |
|
| 511 |
+ $ephemeralPK . $publicKey, |
|
| 512 |
+ '', |
|
| 513 |
+ 24 |
|
| 514 |
+ ); |
|
| 515 |
+ |
|
| 516 |
+ /** @var string $keypair */ |
|
| 517 |
+ $keypair = self::box_keypair_from_secretkey_and_publickey($secretKey, $ephemeralPK); |
|
| 518 |
+ |
|
| 519 |
+ /** @var string $m */ |
|
| 520 |
+ $m = self::box_open($ciphertext, $nonce, $keypair); |
|
| 521 |
+ try {
|
|
| 522 |
+ ParagonIE_Sodium_Compat::memzero($secretKey); |
|
| 523 |
+ ParagonIE_Sodium_Compat::memzero($ephemeralPK); |
|
| 524 |
+ ParagonIE_Sodium_Compat::memzero($nonce); |
|
| 525 |
+ } catch (SodiumException $ex) {
|
|
| 526 |
+ $secretKey = null; |
|
| 527 |
+ $ephemeralPK = null; |
|
| 528 |
+ $nonce = null; |
|
| 529 |
+ } |
|
| 530 |
+ return $m; |
|
| 531 |
+ } |
|
| 532 |
+ |
|
| 533 |
+ /** |
|
| 534 |
+ * Used by crypto_box() to get the crypto_secretbox() key. |
|
| 535 |
+ * |
|
| 536 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 537 |
+ * |
|
| 538 |
+ * @param string $sk |
|
| 539 |
+ * @param string $pk |
|
| 540 |
+ * @return string |
|
| 541 |
+ * @throws SodiumException |
|
| 542 |
+ * @throws TypeError |
|
| 543 |
+ */ |
|
| 544 |
+ public static function box_beforenm($sk, $pk) |
|
| 545 |
+ {
|
|
| 546 |
+ return ParagonIE_Sodium_Core_HSalsa20::hsalsa20( |
|
| 547 |
+ str_repeat("\x00", 16),
|
|
| 548 |
+ self::scalarmult($sk, $pk) |
|
| 549 |
+ ); |
|
| 550 |
+ } |
|
| 551 |
+ |
|
| 552 |
+ /** |
|
| 553 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 554 |
+ * |
|
| 555 |
+ * @return string |
|
| 556 |
+ * @throws Exception |
|
| 557 |
+ * @throws SodiumException |
|
| 558 |
+ * @throws TypeError |
|
| 559 |
+ */ |
|
| 560 |
+ public static function box_keypair() |
|
| 561 |
+ {
|
|
| 562 |
+ $sKey = random_bytes(32); |
|
| 563 |
+ $pKey = self::scalarmult_base($sKey); |
|
| 564 |
+ return $sKey . $pKey; |
|
| 565 |
+ } |
|
| 566 |
+ |
|
| 567 |
+ /** |
|
| 568 |
+ * @param string $seed |
|
| 569 |
+ * @return string |
|
| 570 |
+ * @throws SodiumException |
|
| 571 |
+ * @throws TypeError |
|
| 572 |
+ */ |
|
| 573 |
+ public static function box_seed_keypair($seed) |
|
| 574 |
+ {
|
|
| 575 |
+ $sKey = ParagonIE_Sodium_Core_Util::substr( |
|
| 576 |
+ hash('sha512', $seed, true),
|
|
| 577 |
+ 0, |
|
| 578 |
+ 32 |
|
| 579 |
+ ); |
|
| 580 |
+ $pKey = self::scalarmult_base($sKey); |
|
| 581 |
+ return $sKey . $pKey; |
|
| 582 |
+ } |
|
| 583 |
+ |
|
| 584 |
+ /** |
|
| 585 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 586 |
+ * |
|
| 587 |
+ * @param string $sKey |
|
| 588 |
+ * @param string $pKey |
|
| 589 |
+ * @return string |
|
| 590 |
+ * @throws TypeError |
|
| 591 |
+ */ |
|
| 592 |
+ public static function box_keypair_from_secretkey_and_publickey($sKey, $pKey) |
|
| 593 |
+ {
|
|
| 594 |
+ return ParagonIE_Sodium_Core_Util::substr($sKey, 0, 32) . |
|
| 595 |
+ ParagonIE_Sodium_Core_Util::substr($pKey, 0, 32); |
|
| 596 |
+ } |
|
| 597 |
+ |
|
| 598 |
+ /** |
|
| 599 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 600 |
+ * |
|
| 601 |
+ * @param string $keypair |
|
| 602 |
+ * @return string |
|
| 603 |
+ * @throws RangeException |
|
| 604 |
+ * @throws TypeError |
|
| 605 |
+ */ |
|
| 606 |
+ public static function box_secretkey($keypair) |
|
| 607 |
+ {
|
|
| 608 |
+ if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== 64) {
|
|
| 609 |
+ throw new RangeException( |
|
| 610 |
+ 'Must be ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES bytes long.' |
|
| 611 |
+ ); |
|
| 612 |
+ } |
|
| 613 |
+ return ParagonIE_Sodium_Core_Util::substr($keypair, 0, 32); |
|
| 614 |
+ } |
|
| 615 |
+ |
|
| 616 |
+ /** |
|
| 617 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 618 |
+ * |
|
| 619 |
+ * @param string $keypair |
|
| 620 |
+ * @return string |
|
| 621 |
+ * @throws RangeException |
|
| 622 |
+ * @throws TypeError |
|
| 623 |
+ */ |
|
| 624 |
+ public static function box_publickey($keypair) |
|
| 625 |
+ {
|
|
| 626 |
+ if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) {
|
|
| 627 |
+ throw new RangeException( |
|
| 628 |
+ 'Must be ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES bytes long.' |
|
| 629 |
+ ); |
|
| 630 |
+ } |
|
| 631 |
+ return ParagonIE_Sodium_Core_Util::substr($keypair, 32, 32); |
|
| 632 |
+ } |
|
| 633 |
+ |
|
| 634 |
+ /** |
|
| 635 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 636 |
+ * |
|
| 637 |
+ * @param string $sKey |
|
| 638 |
+ * @return string |
|
| 639 |
+ * @throws RangeException |
|
| 640 |
+ * @throws SodiumException |
|
| 641 |
+ * @throws TypeError |
|
| 642 |
+ */ |
|
| 643 |
+ public static function box_publickey_from_secretkey($sKey) |
|
| 644 |
+ {
|
|
| 645 |
+ if (ParagonIE_Sodium_Core_Util::strlen($sKey) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_SECRETKEYBYTES) {
|
|
| 646 |
+ throw new RangeException( |
|
| 647 |
+ 'Must be ParagonIE_Sodium_Compat::CRYPTO_BOX_SECRETKEYBYTES bytes long.' |
|
| 648 |
+ ); |
|
| 649 |
+ } |
|
| 650 |
+ return self::scalarmult_base($sKey); |
|
| 651 |
+ } |
|
| 652 |
+ |
|
| 653 |
+ /** |
|
| 654 |
+ * Decrypt a message encrypted with box(). |
|
| 655 |
+ * |
|
| 656 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 657 |
+ * |
|
| 658 |
+ * @param string $ciphertext |
|
| 659 |
+ * @param string $nonce |
|
| 660 |
+ * @param string $keypair |
|
| 661 |
+ * @return string |
|
| 662 |
+ * @throws SodiumException |
|
| 663 |
+ * @throws TypeError |
|
| 664 |
+ */ |
|
| 665 |
+ public static function box_open($ciphertext, $nonce, $keypair) |
|
| 666 |
+ {
|
|
| 667 |
+ return self::secretbox_open( |
|
| 668 |
+ $ciphertext, |
|
| 669 |
+ $nonce, |
|
| 670 |
+ self::box_beforenm( |
|
| 671 |
+ self::box_secretkey($keypair), |
|
| 672 |
+ self::box_publickey($keypair) |
|
| 673 |
+ ) |
|
| 674 |
+ ); |
|
| 675 |
+ } |
|
| 676 |
+ |
|
| 677 |
+ /** |
|
| 678 |
+ * Calculate a BLAKE2b hash. |
|
| 679 |
+ * |
|
| 680 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 681 |
+ * |
|
| 682 |
+ * @param string $message |
|
| 683 |
+ * @param string|null $key |
|
| 684 |
+ * @param int $outlen |
|
| 685 |
+ * @return string |
|
| 686 |
+ * @throws RangeException |
|
| 687 |
+ * @throws SodiumException |
|
| 688 |
+ * @throws TypeError |
|
| 689 |
+ */ |
|
| 690 |
+ public static function generichash($message, $key = '', $outlen = 32) |
|
| 691 |
+ {
|
|
| 692 |
+ // This ensures that ParagonIE_Sodium_Core_BLAKE2b::$iv is initialized |
|
| 693 |
+ ParagonIE_Sodium_Core_BLAKE2b::pseudoConstructor(); |
|
| 694 |
+ |
|
| 695 |
+ $k = null; |
|
| 696 |
+ if (!empty($key)) {
|
|
| 697 |
+ /** @var SplFixedArray $k */ |
|
| 698 |
+ $k = ParagonIE_Sodium_Core_BLAKE2b::stringToSplFixedArray($key); |
|
| 699 |
+ if ($k->count() > ParagonIE_Sodium_Core_BLAKE2b::KEYBYTES) {
|
|
| 700 |
+ throw new RangeException('Invalid key size');
|
|
| 701 |
+ } |
|
| 702 |
+ } |
|
| 703 |
+ |
|
| 704 |
+ /** @var SplFixedArray $in */ |
|
| 705 |
+ $in = ParagonIE_Sodium_Core_BLAKE2b::stringToSplFixedArray($message); |
|
| 706 |
+ |
|
| 707 |
+ /** @var SplFixedArray $ctx */ |
|
| 708 |
+ $ctx = ParagonIE_Sodium_Core_BLAKE2b::init($k, $outlen); |
|
| 709 |
+ ParagonIE_Sodium_Core_BLAKE2b::update($ctx, $in, $in->count()); |
|
| 710 |
+ |
|
| 711 |
+ /** @var SplFixedArray $out */ |
|
| 712 |
+ $out = new SplFixedArray($outlen); |
|
| 713 |
+ $out = ParagonIE_Sodium_Core_BLAKE2b::finish($ctx, $out); |
|
| 714 |
+ |
|
| 715 |
+ /** @var array<int, int> */ |
|
| 716 |
+ $outArray = $out->toArray(); |
|
| 717 |
+ return ParagonIE_Sodium_Core_Util::intArrayToString($outArray); |
|
| 718 |
+ } |
|
| 719 |
+ |
|
| 720 |
+ /** |
|
| 721 |
+ * Finalize a BLAKE2b hashing context, returning the hash. |
|
| 722 |
+ * |
|
| 723 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 724 |
+ * |
|
| 725 |
+ * @param string $ctx |
|
| 726 |
+ * @param int $outlen |
|
| 727 |
+ * @return string |
|
| 728 |
+ * @throws SodiumException |
|
| 729 |
+ * @throws TypeError |
|
| 730 |
+ */ |
|
| 731 |
+ public static function generichash_final($ctx, $outlen = 32) |
|
| 732 |
+ {
|
|
| 733 |
+ if (!is_string($ctx)) {
|
|
| 734 |
+ throw new TypeError('Context must be a string');
|
|
| 735 |
+ } |
|
| 736 |
+ $out = new SplFixedArray($outlen); |
|
| 737 |
+ |
|
| 738 |
+ /** @var SplFixedArray $context */ |
|
| 739 |
+ $context = ParagonIE_Sodium_Core_BLAKE2b::stringToContext($ctx); |
|
| 740 |
+ |
|
| 741 |
+ /** @var SplFixedArray $out */ |
|
| 742 |
+ $out = ParagonIE_Sodium_Core_BLAKE2b::finish($context, $out); |
|
| 743 |
+ |
|
| 744 |
+ /** @var array<int, int> */ |
|
| 745 |
+ $outArray = $out->toArray(); |
|
| 746 |
+ return ParagonIE_Sodium_Core_Util::intArrayToString($outArray); |
|
| 747 |
+ } |
|
| 748 |
+ |
|
| 749 |
+ /** |
|
| 750 |
+ * Initialize a hashing context for BLAKE2b. |
|
| 751 |
+ * |
|
| 752 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 753 |
+ * |
|
| 754 |
+ * @param string $key |
|
| 755 |
+ * @param int $outputLength |
|
| 756 |
+ * @return string |
|
| 757 |
+ * @throws RangeException |
|
| 758 |
+ * @throws SodiumException |
|
| 759 |
+ * @throws TypeError |
|
| 760 |
+ */ |
|
| 761 |
+ public static function generichash_init($key = '', $outputLength = 32) |
|
| 762 |
+ {
|
|
| 763 |
+ // This ensures that ParagonIE_Sodium_Core_BLAKE2b::$iv is initialized |
|
| 764 |
+ ParagonIE_Sodium_Core_BLAKE2b::pseudoConstructor(); |
|
| 765 |
+ |
|
| 766 |
+ $k = null; |
|
| 767 |
+ if (!empty($key)) {
|
|
| 768 |
+ $k = ParagonIE_Sodium_Core_BLAKE2b::stringToSplFixedArray($key); |
|
| 769 |
+ if ($k->count() > ParagonIE_Sodium_Core_BLAKE2b::KEYBYTES) {
|
|
| 770 |
+ throw new RangeException('Invalid key size');
|
|
| 771 |
+ } |
|
| 772 |
+ } |
|
| 773 |
+ |
|
| 774 |
+ /** @var SplFixedArray $ctx */ |
|
| 775 |
+ $ctx = ParagonIE_Sodium_Core_BLAKE2b::init($k, $outputLength); |
|
| 776 |
+ |
|
| 777 |
+ return ParagonIE_Sodium_Core_BLAKE2b::contextToString($ctx); |
|
| 778 |
+ } |
|
| 779 |
+ |
|
| 780 |
+ /** |
|
| 781 |
+ * Initialize a hashing context for BLAKE2b. |
|
| 782 |
+ * |
|
| 783 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 784 |
+ * |
|
| 785 |
+ * @param string $key |
|
| 786 |
+ * @param int $outputLength |
|
| 787 |
+ * @param string $salt |
|
| 788 |
+ * @param string $personal |
|
| 789 |
+ * @return string |
|
| 790 |
+ * @throws RangeException |
|
| 791 |
+ * @throws SodiumException |
|
| 792 |
+ * @throws TypeError |
|
| 793 |
+ */ |
|
| 794 |
+ public static function generichash_init_salt_personal( |
|
| 795 |
+ $key = '', |
|
| 796 |
+ $outputLength = 32, |
|
| 797 |
+ $salt = '', |
|
| 798 |
+ $personal = '' |
|
| 799 |
+ ) {
|
|
| 800 |
+ // This ensures that ParagonIE_Sodium_Core_BLAKE2b::$iv is initialized |
|
| 801 |
+ ParagonIE_Sodium_Core_BLAKE2b::pseudoConstructor(); |
|
| 802 |
+ |
|
| 803 |
+ $k = null; |
|
| 804 |
+ if (!empty($key)) {
|
|
| 805 |
+ $k = ParagonIE_Sodium_Core_BLAKE2b::stringToSplFixedArray($key); |
|
| 806 |
+ if ($k->count() > ParagonIE_Sodium_Core_BLAKE2b::KEYBYTES) {
|
|
| 807 |
+ throw new RangeException('Invalid key size');
|
|
| 808 |
+ } |
|
| 809 |
+ } |
|
| 810 |
+ if (!empty($salt)) {
|
|
| 811 |
+ $s = ParagonIE_Sodium_Core_BLAKE2b::stringToSplFixedArray($salt); |
|
| 812 |
+ } else {
|
|
| 813 |
+ $s = null; |
|
| 814 |
+ } |
|
| 815 |
+ if (!empty($salt)) {
|
|
| 816 |
+ $p = ParagonIE_Sodium_Core_BLAKE2b::stringToSplFixedArray($personal); |
|
| 817 |
+ } else {
|
|
| 818 |
+ $p = null; |
|
| 819 |
+ } |
|
| 820 |
+ |
|
| 821 |
+ /** @var SplFixedArray $ctx */ |
|
| 822 |
+ $ctx = ParagonIE_Sodium_Core_BLAKE2b::init($k, $outputLength, $s, $p); |
|
| 823 |
+ |
|
| 824 |
+ return ParagonIE_Sodium_Core_BLAKE2b::contextToString($ctx); |
|
| 825 |
+ } |
|
| 826 |
+ |
|
| 827 |
+ /** |
|
| 828 |
+ * Update a hashing context for BLAKE2b with $message |
|
| 829 |
+ * |
|
| 830 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 831 |
+ * |
|
| 832 |
+ * @param string $ctx |
|
| 833 |
+ * @param string $message |
|
| 834 |
+ * @return string |
|
| 835 |
+ * @throws SodiumException |
|
| 836 |
+ * @throws TypeError |
|
| 837 |
+ */ |
|
| 838 |
+ public static function generichash_update($ctx, $message) |
|
| 839 |
+ {
|
|
| 840 |
+ // This ensures that ParagonIE_Sodium_Core_BLAKE2b::$iv is initialized |
|
| 841 |
+ ParagonIE_Sodium_Core_BLAKE2b::pseudoConstructor(); |
|
| 842 |
+ |
|
| 843 |
+ /** @var SplFixedArray $context */ |
|
| 844 |
+ $context = ParagonIE_Sodium_Core_BLAKE2b::stringToContext($ctx); |
|
| 845 |
+ |
|
| 846 |
+ /** @var SplFixedArray $in */ |
|
| 847 |
+ $in = ParagonIE_Sodium_Core_BLAKE2b::stringToSplFixedArray($message); |
|
| 848 |
+ |
|
| 849 |
+ ParagonIE_Sodium_Core_BLAKE2b::update($context, $in, $in->count()); |
|
| 850 |
+ |
|
| 851 |
+ return ParagonIE_Sodium_Core_BLAKE2b::contextToString($context); |
|
| 852 |
+ } |
|
| 853 |
+ |
|
| 854 |
+ /** |
|
| 855 |
+ * Libsodium's crypto_kx(). |
|
| 856 |
+ * |
|
| 857 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 858 |
+ * |
|
| 859 |
+ * @param string $my_sk |
|
| 860 |
+ * @param string $their_pk |
|
| 861 |
+ * @param string $client_pk |
|
| 862 |
+ * @param string $server_pk |
|
| 863 |
+ * @return string |
|
| 864 |
+ * @throws SodiumException |
|
| 865 |
+ * @throws TypeError |
|
| 866 |
+ */ |
|
| 867 |
+ public static function keyExchange($my_sk, $their_pk, $client_pk, $server_pk) |
|
| 868 |
+ {
|
|
| 869 |
+ return ParagonIE_Sodium_Compat::crypto_generichash( |
|
| 870 |
+ ParagonIE_Sodium_Compat::crypto_scalarmult($my_sk, $their_pk) . |
|
| 871 |
+ $client_pk . |
|
| 872 |
+ $server_pk |
|
| 873 |
+ ); |
|
| 874 |
+ } |
|
| 875 |
+ |
|
| 876 |
+ /** |
|
| 877 |
+ * ECDH over Curve25519 |
|
| 878 |
+ * |
|
| 879 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 880 |
+ * |
|
| 881 |
+ * @param string $sKey |
|
| 882 |
+ * @param string $pKey |
|
| 883 |
+ * @return string |
|
| 884 |
+ * |
|
| 885 |
+ * @throws SodiumException |
|
| 886 |
+ * @throws TypeError |
|
| 887 |
+ */ |
|
| 888 |
+ public static function scalarmult($sKey, $pKey) |
|
| 889 |
+ {
|
|
| 890 |
+ $q = ParagonIE_Sodium_Core_X25519::crypto_scalarmult_curve25519_ref10($sKey, $pKey); |
|
| 891 |
+ self::scalarmult_throw_if_zero($q); |
|
| 892 |
+ return $q; |
|
| 893 |
+ } |
|
| 894 |
+ |
|
| 895 |
+ /** |
|
| 896 |
+ * ECDH over Curve25519, using the basepoint. |
|
| 897 |
+ * Used to get a secret key from a public key. |
|
| 898 |
+ * |
|
| 899 |
+ * @param string $secret |
|
| 900 |
+ * @return string |
|
| 901 |
+ * |
|
| 902 |
+ * @throws SodiumException |
|
| 903 |
+ * @throws TypeError |
|
| 904 |
+ */ |
|
| 905 |
+ public static function scalarmult_base($secret) |
|
| 906 |
+ {
|
|
| 907 |
+ $q = ParagonIE_Sodium_Core_X25519::crypto_scalarmult_curve25519_ref10_base($secret); |
|
| 908 |
+ self::scalarmult_throw_if_zero($q); |
|
| 909 |
+ return $q; |
|
| 910 |
+ } |
|
| 911 |
+ |
|
| 912 |
+ /** |
|
| 913 |
+ * This throws an Error if a zero public key was passed to the function. |
|
| 914 |
+ * |
|
| 915 |
+ * @param string $q |
|
| 916 |
+ * @return void |
|
| 917 |
+ * @throws SodiumException |
|
| 918 |
+ * @throws TypeError |
|
| 919 |
+ */ |
|
| 920 |
+ protected static function scalarmult_throw_if_zero($q) |
|
| 921 |
+ {
|
|
| 922 |
+ $d = 0; |
|
| 923 |
+ for ($i = 0; $i < self::box_curve25519xsalsa20poly1305_SECRETKEYBYTES; ++$i) {
|
|
| 924 |
+ $d |= ParagonIE_Sodium_Core_Util::chrToInt($q[$i]); |
|
| 925 |
+ } |
|
| 926 |
+ |
|
| 927 |
+ /* branch-free variant of === 0 */ |
|
| 928 |
+ if (-(1 & (($d - 1) >> 8))) {
|
|
| 929 |
+ throw new SodiumException('Zero public key is not allowed');
|
|
| 930 |
+ } |
|
| 931 |
+ } |
|
| 932 |
+ |
|
| 933 |
+ /** |
|
| 934 |
+ * XSalsa20-Poly1305 authenticated symmetric-key encryption. |
|
| 935 |
+ * |
|
| 936 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 937 |
+ * |
|
| 938 |
+ * @param string $plaintext |
|
| 939 |
+ * @param string $nonce |
|
| 940 |
+ * @param string $key |
|
| 941 |
+ * @return string |
|
| 942 |
+ * @throws SodiumException |
|
| 943 |
+ * @throws TypeError |
|
| 944 |
+ */ |
|
| 945 |
+ public static function secretbox($plaintext, $nonce, $key) |
|
| 946 |
+ {
|
|
| 947 |
+ /** @var string $subkey */ |
|
| 948 |
+ $subkey = ParagonIE_Sodium_Core_HSalsa20::hsalsa20($nonce, $key); |
|
| 949 |
+ |
|
| 950 |
+ /** @var string $block0 */ |
|
| 951 |
+ $block0 = str_repeat("\x00", 32);
|
|
| 952 |
+ |
|
| 953 |
+ /** @var int $mlen - Length of the plaintext message */ |
|
| 954 |
+ $mlen = ParagonIE_Sodium_Core_Util::strlen($plaintext); |
|
| 955 |
+ $mlen0 = $mlen; |
|
| 956 |
+ if ($mlen0 > 64 - self::secretbox_xsalsa20poly1305_ZEROBYTES) {
|
|
| 957 |
+ $mlen0 = 64 - self::secretbox_xsalsa20poly1305_ZEROBYTES; |
|
| 958 |
+ } |
|
| 959 |
+ $block0 .= ParagonIE_Sodium_Core_Util::substr($plaintext, 0, $mlen0); |
|
| 960 |
+ |
|
| 961 |
+ /** @var string $block0 */ |
|
| 962 |
+ $block0 = ParagonIE_Sodium_Core_Salsa20::salsa20_xor( |
|
| 963 |
+ $block0, |
|
| 964 |
+ ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8), |
|
| 965 |
+ $subkey |
|
| 966 |
+ ); |
|
| 967 |
+ |
|
| 968 |
+ /** @var string $c */ |
|
| 969 |
+ $c = ParagonIE_Sodium_Core_Util::substr( |
|
| 970 |
+ $block0, |
|
| 971 |
+ self::secretbox_xsalsa20poly1305_ZEROBYTES |
|
| 972 |
+ ); |
|
| 973 |
+ if ($mlen > $mlen0) {
|
|
| 974 |
+ $c .= ParagonIE_Sodium_Core_Salsa20::salsa20_xor_ic( |
|
| 975 |
+ ParagonIE_Sodium_Core_Util::substr( |
|
| 976 |
+ $plaintext, |
|
| 977 |
+ self::secretbox_xsalsa20poly1305_ZEROBYTES |
|
| 978 |
+ ), |
|
| 979 |
+ ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8), |
|
| 980 |
+ 1, |
|
| 981 |
+ $subkey |
|
| 982 |
+ ); |
|
| 983 |
+ } |
|
| 984 |
+ $state = new ParagonIE_Sodium_Core_Poly1305_State( |
|
| 985 |
+ ParagonIE_Sodium_Core_Util::substr( |
|
| 986 |
+ $block0, |
|
| 987 |
+ 0, |
|
| 988 |
+ self::onetimeauth_poly1305_KEYBYTES |
|
| 989 |
+ ) |
|
| 990 |
+ ); |
|
| 991 |
+ try {
|
|
| 992 |
+ ParagonIE_Sodium_Compat::memzero($block0); |
|
| 993 |
+ ParagonIE_Sodium_Compat::memzero($subkey); |
|
| 994 |
+ } catch (SodiumException $ex) {
|
|
| 995 |
+ $block0 = null; |
|
| 996 |
+ $subkey = null; |
|
| 997 |
+ } |
|
| 998 |
+ |
|
| 999 |
+ $state->update($c); |
|
| 1000 |
+ |
|
| 1001 |
+ /** @var string $c - MAC || ciphertext */ |
|
| 1002 |
+ $c = $state->finish() . $c; |
|
| 1003 |
+ unset($state); |
|
| 1004 |
+ |
|
| 1005 |
+ return $c; |
|
| 1006 |
+ } |
|
| 1007 |
+ |
|
| 1008 |
+ /** |
|
| 1009 |
+ * Decrypt a ciphertext generated via secretbox(). |
|
| 1010 |
+ * |
|
| 1011 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 1012 |
+ * |
|
| 1013 |
+ * @param string $ciphertext |
|
| 1014 |
+ * @param string $nonce |
|
| 1015 |
+ * @param string $key |
|
| 1016 |
+ * @return string |
|
| 1017 |
+ * @throws SodiumException |
|
| 1018 |
+ * @throws TypeError |
|
| 1019 |
+ */ |
|
| 1020 |
+ public static function secretbox_open($ciphertext, $nonce, $key) |
|
| 1021 |
+ {
|
|
| 1022 |
+ /** @var string $mac */ |
|
| 1023 |
+ $mac = ParagonIE_Sodium_Core_Util::substr( |
|
| 1024 |
+ $ciphertext, |
|
| 1025 |
+ 0, |
|
| 1026 |
+ self::secretbox_xsalsa20poly1305_MACBYTES |
|
| 1027 |
+ ); |
|
| 1028 |
+ |
|
| 1029 |
+ /** @var string $c */ |
|
| 1030 |
+ $c = ParagonIE_Sodium_Core_Util::substr( |
|
| 1031 |
+ $ciphertext, |
|
| 1032 |
+ self::secretbox_xsalsa20poly1305_MACBYTES |
|
| 1033 |
+ ); |
|
| 1034 |
+ |
|
| 1035 |
+ /** @var int $clen */ |
|
| 1036 |
+ $clen = ParagonIE_Sodium_Core_Util::strlen($c); |
|
| 1037 |
+ |
|
| 1038 |
+ /** @var string $subkey */ |
|
| 1039 |
+ $subkey = ParagonIE_Sodium_Core_HSalsa20::hsalsa20($nonce, $key); |
|
| 1040 |
+ |
|
| 1041 |
+ /** @var string $block0 */ |
|
| 1042 |
+ $block0 = ParagonIE_Sodium_Core_Salsa20::salsa20( |
|
| 1043 |
+ 64, |
|
| 1044 |
+ ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8), |
|
| 1045 |
+ $subkey |
|
| 1046 |
+ ); |
|
| 1047 |
+ $verified = ParagonIE_Sodium_Core_Poly1305::onetimeauth_verify( |
|
| 1048 |
+ $mac, |
|
| 1049 |
+ $c, |
|
| 1050 |
+ ParagonIE_Sodium_Core_Util::substr($block0, 0, 32) |
|
| 1051 |
+ ); |
|
| 1052 |
+ if (!$verified) {
|
|
| 1053 |
+ try {
|
|
| 1054 |
+ ParagonIE_Sodium_Compat::memzero($subkey); |
|
| 1055 |
+ } catch (SodiumException $ex) {
|
|
| 1056 |
+ $subkey = null; |
|
| 1057 |
+ } |
|
| 1058 |
+ throw new SodiumException('Invalid MAC');
|
|
| 1059 |
+ } |
|
| 1060 |
+ |
|
| 1061 |
+ /** @var string $m - Decrypted message */ |
|
| 1062 |
+ $m = ParagonIE_Sodium_Core_Util::xorStrings( |
|
| 1063 |
+ ParagonIE_Sodium_Core_Util::substr($block0, self::secretbox_xsalsa20poly1305_ZEROBYTES), |
|
| 1064 |
+ ParagonIE_Sodium_Core_Util::substr($c, 0, self::secretbox_xsalsa20poly1305_ZEROBYTES) |
|
| 1065 |
+ ); |
|
| 1066 |
+ if ($clen > self::secretbox_xsalsa20poly1305_ZEROBYTES) {
|
|
| 1067 |
+ // We had more than 1 block, so let's continue to decrypt the rest. |
|
| 1068 |
+ $m .= ParagonIE_Sodium_Core_Salsa20::salsa20_xor_ic( |
|
| 1069 |
+ ParagonIE_Sodium_Core_Util::substr( |
|
| 1070 |
+ $c, |
|
| 1071 |
+ self::secretbox_xsalsa20poly1305_ZEROBYTES |
|
| 1072 |
+ ), |
|
| 1073 |
+ ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8), |
|
| 1074 |
+ 1, |
|
| 1075 |
+ (string) $subkey |
|
| 1076 |
+ ); |
|
| 1077 |
+ } |
|
| 1078 |
+ return $m; |
|
| 1079 |
+ } |
|
| 1080 |
+ |
|
| 1081 |
+ /** |
|
| 1082 |
+ * XChaCha20-Poly1305 authenticated symmetric-key encryption. |
|
| 1083 |
+ * |
|
| 1084 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 1085 |
+ * |
|
| 1086 |
+ * @param string $plaintext |
|
| 1087 |
+ * @param string $nonce |
|
| 1088 |
+ * @param string $key |
|
| 1089 |
+ * @return string |
|
| 1090 |
+ * @throws SodiumException |
|
| 1091 |
+ * @throws TypeError |
|
| 1092 |
+ */ |
|
| 1093 |
+ public static function secretbox_xchacha20poly1305($plaintext, $nonce, $key) |
|
| 1094 |
+ {
|
|
| 1095 |
+ /** @var string $subkey */ |
|
| 1096 |
+ $subkey = ParagonIE_Sodium_Core_HChaCha20::hChaCha20( |
|
| 1097 |
+ ParagonIE_Sodium_Core_Util::substr($nonce, 0, 16), |
|
| 1098 |
+ $key |
|
| 1099 |
+ ); |
|
| 1100 |
+ $nonceLast = ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8); |
|
| 1101 |
+ |
|
| 1102 |
+ /** @var string $block0 */ |
|
| 1103 |
+ $block0 = str_repeat("\x00", 32);
|
|
| 1104 |
+ |
|
| 1105 |
+ /** @var int $mlen - Length of the plaintext message */ |
|
| 1106 |
+ $mlen = ParagonIE_Sodium_Core_Util::strlen($plaintext); |
|
| 1107 |
+ $mlen0 = $mlen; |
|
| 1108 |
+ if ($mlen0 > 64 - self::secretbox_xchacha20poly1305_ZEROBYTES) {
|
|
| 1109 |
+ $mlen0 = 64 - self::secretbox_xchacha20poly1305_ZEROBYTES; |
|
| 1110 |
+ } |
|
| 1111 |
+ $block0 .= ParagonIE_Sodium_Core_Util::substr($plaintext, 0, $mlen0); |
|
| 1112 |
+ |
|
| 1113 |
+ /** @var string $block0 */ |
|
| 1114 |
+ $block0 = ParagonIE_Sodium_Core_ChaCha20::streamXorIc( |
|
| 1115 |
+ $block0, |
|
| 1116 |
+ $nonceLast, |
|
| 1117 |
+ $subkey |
|
| 1118 |
+ ); |
|
| 1119 |
+ |
|
| 1120 |
+ /** @var string $c */ |
|
| 1121 |
+ $c = ParagonIE_Sodium_Core_Util::substr( |
|
| 1122 |
+ $block0, |
|
| 1123 |
+ self::secretbox_xchacha20poly1305_ZEROBYTES |
|
| 1124 |
+ ); |
|
| 1125 |
+ if ($mlen > $mlen0) {
|
|
| 1126 |
+ $c .= ParagonIE_Sodium_Core_ChaCha20::streamXorIc( |
|
| 1127 |
+ ParagonIE_Sodium_Core_Util::substr( |
|
| 1128 |
+ $plaintext, |
|
| 1129 |
+ self::secretbox_xchacha20poly1305_ZEROBYTES |
|
| 1130 |
+ ), |
|
| 1131 |
+ $nonceLast, |
|
| 1132 |
+ $subkey, |
|
| 1133 |
+ ParagonIE_Sodium_Core_Util::store64_le(1) |
|
| 1134 |
+ ); |
|
| 1135 |
+ } |
|
| 1136 |
+ $state = new ParagonIE_Sodium_Core_Poly1305_State( |
|
| 1137 |
+ ParagonIE_Sodium_Core_Util::substr( |
|
| 1138 |
+ $block0, |
|
| 1139 |
+ 0, |
|
| 1140 |
+ self::onetimeauth_poly1305_KEYBYTES |
|
| 1141 |
+ ) |
|
| 1142 |
+ ); |
|
| 1143 |
+ try {
|
|
| 1144 |
+ ParagonIE_Sodium_Compat::memzero($block0); |
|
| 1145 |
+ ParagonIE_Sodium_Compat::memzero($subkey); |
|
| 1146 |
+ } catch (SodiumException $ex) {
|
|
| 1147 |
+ $block0 = null; |
|
| 1148 |
+ $subkey = null; |
|
| 1149 |
+ } |
|
| 1150 |
+ |
|
| 1151 |
+ $state->update($c); |
|
| 1152 |
+ |
|
| 1153 |
+ /** @var string $c - MAC || ciphertext */ |
|
| 1154 |
+ $c = $state->finish() . $c; |
|
| 1155 |
+ unset($state); |
|
| 1156 |
+ |
|
| 1157 |
+ return $c; |
|
| 1158 |
+ } |
|
| 1159 |
+ |
|
| 1160 |
+ /** |
|
| 1161 |
+ * Decrypt a ciphertext generated via secretbox_xchacha20poly1305(). |
|
| 1162 |
+ * |
|
| 1163 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 1164 |
+ * |
|
| 1165 |
+ * @param string $ciphertext |
|
| 1166 |
+ * @param string $nonce |
|
| 1167 |
+ * @param string $key |
|
| 1168 |
+ * @return string |
|
| 1169 |
+ * @throws SodiumException |
|
| 1170 |
+ * @throws TypeError |
|
| 1171 |
+ */ |
|
| 1172 |
+ public static function secretbox_xchacha20poly1305_open($ciphertext, $nonce, $key) |
|
| 1173 |
+ {
|
|
| 1174 |
+ /** @var string $mac */ |
|
| 1175 |
+ $mac = ParagonIE_Sodium_Core_Util::substr( |
|
| 1176 |
+ $ciphertext, |
|
| 1177 |
+ 0, |
|
| 1178 |
+ self::secretbox_xchacha20poly1305_MACBYTES |
|
| 1179 |
+ ); |
|
| 1180 |
+ |
|
| 1181 |
+ /** @var string $c */ |
|
| 1182 |
+ $c = ParagonIE_Sodium_Core_Util::substr( |
|
| 1183 |
+ $ciphertext, |
|
| 1184 |
+ self::secretbox_xchacha20poly1305_MACBYTES |
|
| 1185 |
+ ); |
|
| 1186 |
+ |
|
| 1187 |
+ /** @var int $clen */ |
|
| 1188 |
+ $clen = ParagonIE_Sodium_Core_Util::strlen($c); |
|
| 1189 |
+ |
|
| 1190 |
+ /** @var string $subkey */ |
|
| 1191 |
+ $subkey = ParagonIE_Sodium_Core_HChaCha20::hchacha20($nonce, $key); |
|
| 1192 |
+ |
|
| 1193 |
+ /** @var string $block0 */ |
|
| 1194 |
+ $block0 = ParagonIE_Sodium_Core_ChaCha20::stream( |
|
| 1195 |
+ 64, |
|
| 1196 |
+ ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8), |
|
| 1197 |
+ $subkey |
|
| 1198 |
+ ); |
|
| 1199 |
+ $verified = ParagonIE_Sodium_Core_Poly1305::onetimeauth_verify( |
|
| 1200 |
+ $mac, |
|
| 1201 |
+ $c, |
|
| 1202 |
+ ParagonIE_Sodium_Core_Util::substr($block0, 0, 32) |
|
| 1203 |
+ ); |
|
| 1204 |
+ |
|
| 1205 |
+ if (!$verified) {
|
|
| 1206 |
+ try {
|
|
| 1207 |
+ ParagonIE_Sodium_Compat::memzero($subkey); |
|
| 1208 |
+ } catch (SodiumException $ex) {
|
|
| 1209 |
+ $subkey = null; |
|
| 1210 |
+ } |
|
| 1211 |
+ throw new SodiumException('Invalid MAC');
|
|
| 1212 |
+ } |
|
| 1213 |
+ |
|
| 1214 |
+ /** @var string $m - Decrypted message */ |
|
| 1215 |
+ $m = ParagonIE_Sodium_Core_Util::xorStrings( |
|
| 1216 |
+ ParagonIE_Sodium_Core_Util::substr($block0, self::secretbox_xchacha20poly1305_ZEROBYTES), |
|
| 1217 |
+ ParagonIE_Sodium_Core_Util::substr($c, 0, self::secretbox_xchacha20poly1305_ZEROBYTES) |
|
| 1218 |
+ ); |
|
| 1219 |
+ |
|
| 1220 |
+ if ($clen > self::secretbox_xchacha20poly1305_ZEROBYTES) {
|
|
| 1221 |
+ // We had more than 1 block, so let's continue to decrypt the rest. |
|
| 1222 |
+ $m .= ParagonIE_Sodium_Core_ChaCha20::streamXorIc( |
|
| 1223 |
+ ParagonIE_Sodium_Core_Util::substr( |
|
| 1224 |
+ $c, |
|
| 1225 |
+ self::secretbox_xchacha20poly1305_ZEROBYTES |
|
| 1226 |
+ ), |
|
| 1227 |
+ ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8), |
|
| 1228 |
+ (string) $subkey, |
|
| 1229 |
+ ParagonIE_Sodium_Core_Util::store64_le(1) |
|
| 1230 |
+ ); |
|
| 1231 |
+ } |
|
| 1232 |
+ return $m; |
|
| 1233 |
+ } |
|
| 1234 |
+ |
|
| 1235 |
+ /** |
|
| 1236 |
+ * @param string $key |
|
| 1237 |
+ * @return array<int, string> Returns a state and a header. |
|
| 1238 |
+ * @throws Exception |
|
| 1239 |
+ * @throws SodiumException |
|
| 1240 |
+ */ |
|
| 1241 |
+ public static function secretstream_xchacha20poly1305_init_push($key) |
|
| 1242 |
+ {
|
|
| 1243 |
+ # randombytes_buf(out, crypto_secretstream_xchacha20poly1305_HEADERBYTES); |
|
| 1244 |
+ $out = random_bytes(24); |
|
| 1245 |
+ |
|
| 1246 |
+ # crypto_core_hchacha20(state->k, out, k, NULL); |
|
| 1247 |
+ $subkey = ParagonIE_Sodium_Core_HChaCha20::hChaCha20($out, $key); |
|
| 1248 |
+ $state = new ParagonIE_Sodium_Core_SecretStream_State( |
|
| 1249 |
+ $subkey, |
|
| 1250 |
+ ParagonIE_Sodium_Core_Util::substr($out, 16, 8) . str_repeat("\0", 4)
|
|
| 1251 |
+ ); |
|
| 1252 |
+ |
|
| 1253 |
+ # _crypto_secretstream_xchacha20poly1305_counter_reset(state); |
|
| 1254 |
+ $state->counterReset(); |
|
| 1255 |
+ |
|
| 1256 |
+ # memcpy(STATE_INONCE(state), out + crypto_core_hchacha20_INPUTBYTES, |
|
| 1257 |
+ # crypto_secretstream_xchacha20poly1305_INONCEBYTES); |
|
| 1258 |
+ # memset(state->_pad, 0, sizeof state->_pad); |
|
| 1259 |
+ return array( |
|
| 1260 |
+ $state->toString(), |
|
| 1261 |
+ $out |
|
| 1262 |
+ ); |
|
| 1263 |
+ } |
|
| 1264 |
+ |
|
| 1265 |
+ /** |
|
| 1266 |
+ * @param string $key |
|
| 1267 |
+ * @param string $header |
|
| 1268 |
+ * @return string Returns a state. |
|
| 1269 |
+ * @throws Exception |
|
| 1270 |
+ */ |
|
| 1271 |
+ public static function secretstream_xchacha20poly1305_init_pull($key, $header) |
|
| 1272 |
+ {
|
|
| 1273 |
+ # crypto_core_hchacha20(state->k, in, k, NULL); |
|
| 1274 |
+ $subkey = ParagonIE_Sodium_Core_HChaCha20::hChaCha20( |
|
| 1275 |
+ ParagonIE_Sodium_Core_Util::substr($header, 0, 16), |
|
| 1276 |
+ $key |
|
| 1277 |
+ ); |
|
| 1278 |
+ $state = new ParagonIE_Sodium_Core_SecretStream_State( |
|
| 1279 |
+ $subkey, |
|
| 1280 |
+ ParagonIE_Sodium_Core_Util::substr($header, 16) |
|
| 1281 |
+ ); |
|
| 1282 |
+ $state->counterReset(); |
|
| 1283 |
+ # memcpy(STATE_INONCE(state), in + crypto_core_hchacha20_INPUTBYTES, |
|
| 1284 |
+ # crypto_secretstream_xchacha20poly1305_INONCEBYTES); |
|
| 1285 |
+ # memset(state->_pad, 0, sizeof state->_pad); |
|
| 1286 |
+ # return 0; |
|
| 1287 |
+ return $state->toString(); |
|
| 1288 |
+ } |
|
| 1289 |
+ |
|
| 1290 |
+ /** |
|
| 1291 |
+ * @param string $state |
|
| 1292 |
+ * @param string $msg |
|
| 1293 |
+ * @param string $aad |
|
| 1294 |
+ * @param int $tag |
|
| 1295 |
+ * @return string |
|
| 1296 |
+ * @throws SodiumException |
|
| 1297 |
+ */ |
|
| 1298 |
+ public static function secretstream_xchacha20poly1305_push(&$state, $msg, $aad = '', $tag = 0) |
|
| 1299 |
+ {
|
|
| 1300 |
+ $st = ParagonIE_Sodium_Core_SecretStream_State::fromString($state); |
|
| 1301 |
+ # crypto_onetimeauth_poly1305_state poly1305_state; |
|
| 1302 |
+ # unsigned char block[64U]; |
|
| 1303 |
+ # unsigned char slen[8U]; |
|
| 1304 |
+ # unsigned char *c; |
|
| 1305 |
+ # unsigned char *mac; |
|
| 1306 |
+ |
|
| 1307 |
+ $msglen = ParagonIE_Sodium_Core_Util::strlen($msg); |
|
| 1308 |
+ $aadlen = ParagonIE_Sodium_Core_Util::strlen($aad); |
|
| 1309 |
+ |
|
| 1310 |
+ if ((($msglen + 63) >> 6) > 0xfffffffe) {
|
|
| 1311 |
+ throw new SodiumException( |
|
| 1312 |
+ 'message cannot be larger than SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_MESSAGEBYTES_MAX bytes' |
|
| 1313 |
+ ); |
|
| 1314 |
+ } |
|
| 1315 |
+ |
|
| 1316 |
+ # if (outlen_p != NULL) {
|
|
| 1317 |
+ # *outlen_p = 0U; |
|
| 1318 |
+ # } |
|
| 1319 |
+ # if (mlen > crypto_secretstream_xchacha20poly1305_MESSAGEBYTES_MAX) {
|
|
| 1320 |
+ # sodium_misuse(); |
|
| 1321 |
+ # } |
|
| 1322 |
+ |
|
| 1323 |
+ # crypto_stream_chacha20_ietf(block, sizeof block, state->nonce, state->k); |
|
| 1324 |
+ # crypto_onetimeauth_poly1305_init(&poly1305_state, block); |
|
| 1325 |
+ # sodium_memzero(block, sizeof block); |
|
| 1326 |
+ $auth = new ParagonIE_Sodium_Core_Poly1305_State( |
|
| 1327 |
+ ParagonIE_Sodium_Core_ChaCha20::ietfStream(32, $st->getCombinedNonce(), $st->getKey()) |
|
| 1328 |
+ ); |
|
| 1329 |
+ |
|
| 1330 |
+ # crypto_onetimeauth_poly1305_update(&poly1305_state, ad, adlen); |
|
| 1331 |
+ $auth->update($aad); |
|
| 1332 |
+ |
|
| 1333 |
+ # crypto_onetimeauth_poly1305_update(&poly1305_state, _pad0, |
|
| 1334 |
+ # (0x10 - adlen) & 0xf); |
|
| 1335 |
+ $auth->update(str_repeat("\0", ((0x10 - $aadlen) & 0xf)));
|
|
| 1336 |
+ |
|
| 1337 |
+ # memset(block, 0, sizeof block); |
|
| 1338 |
+ # block[0] = tag; |
|
| 1339 |
+ # crypto_stream_chacha20_ietf_xor_ic(block, block, sizeof block, |
|
| 1340 |
+ # state->nonce, 1U, state->k); |
|
| 1341 |
+ $block = ParagonIE_Sodium_Core_ChaCha20::ietfStreamXorIc( |
|
| 1342 |
+ ParagonIE_Sodium_Core_Util::intToChr($tag) . str_repeat("\0", 63),
|
|
| 1343 |
+ $st->getCombinedNonce(), |
|
| 1344 |
+ $st->getKey(), |
|
| 1345 |
+ ParagonIE_Sodium_Core_Util::store64_le(1) |
|
| 1346 |
+ ); |
|
| 1347 |
+ |
|
| 1348 |
+ # crypto_onetimeauth_poly1305_update(&poly1305_state, block, sizeof block); |
|
| 1349 |
+ $auth->update($block); |
|
| 1350 |
+ |
|
| 1351 |
+ # out[0] = block[0]; |
|
| 1352 |
+ $out = $block[0]; |
|
| 1353 |
+ # c = out + (sizeof tag); |
|
| 1354 |
+ # crypto_stream_chacha20_ietf_xor_ic(c, m, mlen, state->nonce, 2U, state->k); |
|
| 1355 |
+ $cipher = ParagonIE_Sodium_Core_ChaCha20::ietfStreamXorIc( |
|
| 1356 |
+ $msg, |
|
| 1357 |
+ $st->getCombinedNonce(), |
|
| 1358 |
+ $st->getKey(), |
|
| 1359 |
+ ParagonIE_Sodium_Core_Util::store64_le(2) |
|
| 1360 |
+ ); |
|
| 1361 |
+ |
|
| 1362 |
+ # crypto_onetimeauth_poly1305_update(&poly1305_state, c, mlen); |
|
| 1363 |
+ $auth->update($cipher); |
|
| 1364 |
+ |
|
| 1365 |
+ $out .= $cipher; |
|
| 1366 |
+ unset($cipher); |
|
| 1367 |
+ |
|
| 1368 |
+ # crypto_onetimeauth_poly1305_update |
|
| 1369 |
+ # (&poly1305_state, _pad0, (0x10 - (sizeof block) + mlen) & 0xf); |
|
| 1370 |
+ $auth->update(str_repeat("\0", ((0x10 - 64 + $msglen) & 0xf)));
|
|
| 1371 |
+ |
|
| 1372 |
+ # STORE64_LE(slen, (uint64_t) adlen); |
|
| 1373 |
+ $slen = ParagonIE_Sodium_Core_Util::store64_le($aadlen); |
|
| 1374 |
+ |
|
| 1375 |
+ # crypto_onetimeauth_poly1305_update(&poly1305_state, slen, sizeof slen); |
|
| 1376 |
+ $auth->update($slen); |
|
| 1377 |
+ |
|
| 1378 |
+ # STORE64_LE(slen, (sizeof block) + mlen); |
|
| 1379 |
+ $slen = ParagonIE_Sodium_Core_Util::store64_le(64 + $msglen); |
|
| 1380 |
+ |
|
| 1381 |
+ # crypto_onetimeauth_poly1305_update(&poly1305_state, slen, sizeof slen); |
|
| 1382 |
+ $auth->update($slen); |
|
| 1383 |
+ |
|
| 1384 |
+ # mac = c + mlen; |
|
| 1385 |
+ # crypto_onetimeauth_poly1305_final(&poly1305_state, mac); |
|
| 1386 |
+ $mac = $auth->finish(); |
|
| 1387 |
+ $out .= $mac; |
|
| 1388 |
+ |
|
| 1389 |
+ # sodium_memzero(&poly1305_state, sizeof poly1305_state); |
|
| 1390 |
+ unset($auth); |
|
| 1391 |
+ |
|
| 1392 |
+ |
|
| 1393 |
+ # XOR_BUF(STATE_INONCE(state), mac, |
|
| 1394 |
+ # crypto_secretstream_xchacha20poly1305_INONCEBYTES); |
|
| 1395 |
+ $st->xorNonce($mac); |
|
| 1396 |
+ |
|
| 1397 |
+ # sodium_increment(STATE_COUNTER(state), |
|
| 1398 |
+ # crypto_secretstream_xchacha20poly1305_COUNTERBYTES); |
|
| 1399 |
+ $st->incrementCounter(); |
|
| 1400 |
+ // Overwrite by reference: |
|
| 1401 |
+ $state = $st->toString(); |
|
| 1402 |
+ |
|
| 1403 |
+ /** @var bool $rekey */ |
|
| 1404 |
+ $rekey = ($tag & ParagonIE_Sodium_Compat::CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_REKEY) !== 0; |
|
| 1405 |
+ # if ((tag & crypto_secretstream_xchacha20poly1305_TAG_REKEY) != 0 || |
|
| 1406 |
+ # sodium_is_zero(STATE_COUNTER(state), |
|
| 1407 |
+ # crypto_secretstream_xchacha20poly1305_COUNTERBYTES)) {
|
|
| 1408 |
+ # crypto_secretstream_xchacha20poly1305_rekey(state); |
|
| 1409 |
+ # } |
|
| 1410 |
+ if ($rekey || $st->needsRekey()) {
|
|
| 1411 |
+ // DO REKEY |
|
| 1412 |
+ self::secretstream_xchacha20poly1305_rekey($state); |
|
| 1413 |
+ } |
|
| 1414 |
+ # if (outlen_p != NULL) {
|
|
| 1415 |
+ # *outlen_p = crypto_secretstream_xchacha20poly1305_ABYTES + mlen; |
|
| 1416 |
+ # } |
|
| 1417 |
+ return $out; |
|
| 1418 |
+ } |
|
| 1419 |
+ |
|
| 1420 |
+ /** |
|
| 1421 |
+ * @param string $state |
|
| 1422 |
+ * @param string $cipher |
|
| 1423 |
+ * @param string $aad |
|
| 1424 |
+ * @return bool|array{0: string, 1: int}
|
|
| 1425 |
+ * @throws SodiumException |
|
| 1426 |
+ */ |
|
| 1427 |
+ public static function secretstream_xchacha20poly1305_pull(&$state, $cipher, $aad = '') |
|
| 1428 |
+ {
|
|
| 1429 |
+ $st = ParagonIE_Sodium_Core_SecretStream_State::fromString($state); |
|
| 1430 |
+ |
|
| 1431 |
+ $cipherlen = ParagonIE_Sodium_Core_Util::strlen($cipher); |
|
| 1432 |
+ # mlen = inlen - crypto_secretstream_xchacha20poly1305_ABYTES; |
|
| 1433 |
+ $msglen = $cipherlen - ParagonIE_Sodium_Compat::CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_ABYTES; |
|
| 1434 |
+ $aadlen = ParagonIE_Sodium_Core_Util::strlen($aad); |
|
| 1435 |
+ |
|
| 1436 |
+ # if (mlen > crypto_secretstream_xchacha20poly1305_MESSAGEBYTES_MAX) {
|
|
| 1437 |
+ # sodium_misuse(); |
|
| 1438 |
+ # } |
|
| 1439 |
+ if ((($msglen + 63) >> 6) > 0xfffffffe) {
|
|
| 1440 |
+ throw new SodiumException( |
|
| 1441 |
+ 'message cannot be larger than SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_MESSAGEBYTES_MAX bytes' |
|
| 1442 |
+ ); |
|
| 1443 |
+ } |
|
| 1444 |
+ |
|
| 1445 |
+ # crypto_stream_chacha20_ietf(block, sizeof block, state->nonce, state->k); |
|
| 1446 |
+ # crypto_onetimeauth_poly1305_init(&poly1305_state, block); |
|
| 1447 |
+ # sodium_memzero(block, sizeof block); |
|
| 1448 |
+ $auth = new ParagonIE_Sodium_Core_Poly1305_State( |
|
| 1449 |
+ ParagonIE_Sodium_Core_ChaCha20::ietfStream(32, $st->getCombinedNonce(), $st->getKey()) |
|
| 1450 |
+ ); |
|
| 1451 |
+ |
|
| 1452 |
+ # crypto_onetimeauth_poly1305_update(&poly1305_state, ad, adlen); |
|
| 1453 |
+ $auth->update($aad); |
|
| 1454 |
+ |
|
| 1455 |
+ # crypto_onetimeauth_poly1305_update(&poly1305_state, _pad0, |
|
| 1456 |
+ # (0x10 - adlen) & 0xf); |
|
| 1457 |
+ $auth->update(str_repeat("\0", ((0x10 - $aadlen) & 0xf)));
|
|
| 1458 |
+ |
|
| 1459 |
+ |
|
| 1460 |
+ # memset(block, 0, sizeof block); |
|
| 1461 |
+ # block[0] = in[0]; |
|
| 1462 |
+ # crypto_stream_chacha20_ietf_xor_ic(block, block, sizeof block, |
|
| 1463 |
+ # state->nonce, 1U, state->k); |
|
| 1464 |
+ $block = ParagonIE_Sodium_Core_ChaCha20::ietfStreamXorIc( |
|
| 1465 |
+ $cipher[0] . str_repeat("\0", 63),
|
|
| 1466 |
+ $st->getCombinedNonce(), |
|
| 1467 |
+ $st->getKey(), |
|
| 1468 |
+ ParagonIE_Sodium_Core_Util::store64_le(1) |
|
| 1469 |
+ ); |
|
| 1470 |
+ # tag = block[0]; |
|
| 1471 |
+ # block[0] = in[0]; |
|
| 1472 |
+ # crypto_onetimeauth_poly1305_update(&poly1305_state, block, sizeof block); |
|
| 1473 |
+ $tag = ParagonIE_Sodium_Core_Util::chrToInt($block[0]); |
|
| 1474 |
+ $block[0] = $cipher[0]; |
|
| 1475 |
+ $auth->update($block); |
|
| 1476 |
+ |
|
| 1477 |
+ |
|
| 1478 |
+ # c = in + (sizeof tag); |
|
| 1479 |
+ # crypto_onetimeauth_poly1305_update(&poly1305_state, c, mlen); |
|
| 1480 |
+ $auth->update(ParagonIE_Sodium_Core_Util::substr($cipher, 1, $msglen)); |
|
| 1481 |
+ |
|
| 1482 |
+ # crypto_onetimeauth_poly1305_update |
|
| 1483 |
+ # (&poly1305_state, _pad0, (0x10 - (sizeof block) + mlen) & 0xf); |
|
| 1484 |
+ $auth->update(str_repeat("\0", ((0x10 - 64 + $msglen) & 0xf)));
|
|
| 1485 |
+ |
|
| 1486 |
+ # STORE64_LE(slen, (uint64_t) adlen); |
|
| 1487 |
+ # crypto_onetimeauth_poly1305_update(&poly1305_state, slen, sizeof slen); |
|
| 1488 |
+ $slen = ParagonIE_Sodium_Core_Util::store64_le($aadlen); |
|
| 1489 |
+ $auth->update($slen); |
|
| 1490 |
+ |
|
| 1491 |
+ # STORE64_LE(slen, (sizeof block) + mlen); |
|
| 1492 |
+ # crypto_onetimeauth_poly1305_update(&poly1305_state, slen, sizeof slen); |
|
| 1493 |
+ $slen = ParagonIE_Sodium_Core_Util::store64_le(64 + $msglen); |
|
| 1494 |
+ $auth->update($slen); |
|
| 1495 |
+ |
|
| 1496 |
+ # crypto_onetimeauth_poly1305_final(&poly1305_state, mac); |
|
| 1497 |
+ # sodium_memzero(&poly1305_state, sizeof poly1305_state); |
|
| 1498 |
+ $mac = $auth->finish(); |
|
| 1499 |
+ |
|
| 1500 |
+ # stored_mac = c + mlen; |
|
| 1501 |
+ # if (sodium_memcmp(mac, stored_mac, sizeof mac) != 0) {
|
|
| 1502 |
+ # sodium_memzero(mac, sizeof mac); |
|
| 1503 |
+ # return -1; |
|
| 1504 |
+ # } |
|
| 1505 |
+ |
|
| 1506 |
+ $stored = ParagonIE_Sodium_Core_Util::substr($cipher, $msglen + 1, 16); |
|
| 1507 |
+ if (!ParagonIE_Sodium_Core_Util::hashEquals($mac, $stored)) {
|
|
| 1508 |
+ return false; |
|
| 1509 |
+ } |
|
| 1510 |
+ |
|
| 1511 |
+ # crypto_stream_chacha20_ietf_xor_ic(m, c, mlen, state->nonce, 2U, state->k); |
|
| 1512 |
+ $out = ParagonIE_Sodium_Core_ChaCha20::ietfStreamXorIc( |
|
| 1513 |
+ ParagonIE_Sodium_Core_Util::substr($cipher, 1, $msglen), |
|
| 1514 |
+ $st->getCombinedNonce(), |
|
| 1515 |
+ $st->getKey(), |
|
| 1516 |
+ ParagonIE_Sodium_Core_Util::store64_le(2) |
|
| 1517 |
+ ); |
|
| 1518 |
+ |
|
| 1519 |
+ # XOR_BUF(STATE_INONCE(state), mac, |
|
| 1520 |
+ # crypto_secretstream_xchacha20poly1305_INONCEBYTES); |
|
| 1521 |
+ $st->xorNonce($mac); |
|
| 1522 |
+ |
|
| 1523 |
+ # sodium_increment(STATE_COUNTER(state), |
|
| 1524 |
+ # crypto_secretstream_xchacha20poly1305_COUNTERBYTES); |
|
| 1525 |
+ $st->incrementCounter(); |
|
| 1526 |
+ |
|
| 1527 |
+ # if ((tag & crypto_secretstream_xchacha20poly1305_TAG_REKEY) != 0 || |
|
| 1528 |
+ # sodium_is_zero(STATE_COUNTER(state), |
|
| 1529 |
+ # crypto_secretstream_xchacha20poly1305_COUNTERBYTES)) {
|
|
| 1530 |
+ # crypto_secretstream_xchacha20poly1305_rekey(state); |
|
| 1531 |
+ # } |
|
| 1532 |
+ |
|
| 1533 |
+ // Overwrite by reference: |
|
| 1534 |
+ $state = $st->toString(); |
|
| 1535 |
+ |
|
| 1536 |
+ /** @var bool $rekey */ |
|
| 1537 |
+ $rekey = ($tag & ParagonIE_Sodium_Compat::CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_REKEY) !== 0; |
|
| 1538 |
+ if ($rekey || $st->needsRekey()) {
|
|
| 1539 |
+ // DO REKEY |
|
| 1540 |
+ self::secretstream_xchacha20poly1305_rekey($state); |
|
| 1541 |
+ } |
|
| 1542 |
+ return array($out, $tag); |
|
| 1543 |
+ } |
|
| 1544 |
+ |
|
| 1545 |
+ /** |
|
| 1546 |
+ * @param string $state |
|
| 1547 |
+ * @return void |
|
| 1548 |
+ * @throws SodiumException |
|
| 1549 |
+ */ |
|
| 1550 |
+ public static function secretstream_xchacha20poly1305_rekey(&$state) |
|
| 1551 |
+ {
|
|
| 1552 |
+ $st = ParagonIE_Sodium_Core_SecretStream_State::fromString($state); |
|
| 1553 |
+ # unsigned char new_key_and_inonce[crypto_stream_chacha20_ietf_KEYBYTES + |
|
| 1554 |
+ # crypto_secretstream_xchacha20poly1305_INONCEBYTES]; |
|
| 1555 |
+ # size_t i; |
|
| 1556 |
+ # for (i = 0U; i < crypto_stream_chacha20_ietf_KEYBYTES; i++) {
|
|
| 1557 |
+ # new_key_and_inonce[i] = state->k[i]; |
|
| 1558 |
+ # } |
|
| 1559 |
+ $new_key_and_inonce = $st->getKey(); |
|
| 1560 |
+ |
|
| 1561 |
+ # for (i = 0U; i < crypto_secretstream_xchacha20poly1305_INONCEBYTES; i++) {
|
|
| 1562 |
+ # new_key_and_inonce[crypto_stream_chacha20_ietf_KEYBYTES + i] = |
|
| 1563 |
+ # STATE_INONCE(state)[i]; |
|
| 1564 |
+ # } |
|
| 1565 |
+ $new_key_and_inonce .= ParagonIE_Sodium_Core_Util::substR($st->getNonce(), 0, 8); |
|
| 1566 |
+ |
|
| 1567 |
+ # crypto_stream_chacha20_ietf_xor(new_key_and_inonce, new_key_and_inonce, |
|
| 1568 |
+ # sizeof new_key_and_inonce, |
|
| 1569 |
+ # state->nonce, state->k); |
|
| 1570 |
+ |
|
| 1571 |
+ $st->rekey(ParagonIE_Sodium_Core_ChaCha20::ietfStreamXorIc( |
|
| 1572 |
+ $new_key_and_inonce, |
|
| 1573 |
+ $st->getCombinedNonce(), |
|
| 1574 |
+ $st->getKey(), |
|
| 1575 |
+ ParagonIE_Sodium_Core_Util::store64_le(0) |
|
| 1576 |
+ )); |
|
| 1577 |
+ |
|
| 1578 |
+ # for (i = 0U; i < crypto_stream_chacha20_ietf_KEYBYTES; i++) {
|
|
| 1579 |
+ # state->k[i] = new_key_and_inonce[i]; |
|
| 1580 |
+ # } |
|
| 1581 |
+ # for (i = 0U; i < crypto_secretstream_xchacha20poly1305_INONCEBYTES; i++) {
|
|
| 1582 |
+ # STATE_INONCE(state)[i] = |
|
| 1583 |
+ # new_key_and_inonce[crypto_stream_chacha20_ietf_KEYBYTES + i]; |
|
| 1584 |
+ # } |
|
| 1585 |
+ # _crypto_secretstream_xchacha20poly1305_counter_reset(state); |
|
| 1586 |
+ $st->counterReset(); |
|
| 1587 |
+ |
|
| 1588 |
+ $state = $st->toString(); |
|
| 1589 |
+ } |
|
| 1590 |
+ |
|
| 1591 |
+ /** |
|
| 1592 |
+ * Detached Ed25519 signature. |
|
| 1593 |
+ * |
|
| 1594 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 1595 |
+ * |
|
| 1596 |
+ * @param string $message |
|
| 1597 |
+ * @param string $sk |
|
| 1598 |
+ * @return string |
|
| 1599 |
+ * @throws SodiumException |
|
| 1600 |
+ * @throws TypeError |
|
| 1601 |
+ */ |
|
| 1602 |
+ public static function sign_detached($message, $sk) |
|
| 1603 |
+ {
|
|
| 1604 |
+ return ParagonIE_Sodium_Core_Ed25519::sign_detached($message, $sk); |
|
| 1605 |
+ } |
|
| 1606 |
+ |
|
| 1607 |
+ /** |
|
| 1608 |
+ * Attached Ed25519 signature. (Returns a signed message.) |
|
| 1609 |
+ * |
|
| 1610 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 1611 |
+ * |
|
| 1612 |
+ * @param string $message |
|
| 1613 |
+ * @param string $sk |
|
| 1614 |
+ * @return string |
|
| 1615 |
+ * @throws SodiumException |
|
| 1616 |
+ * @throws TypeError |
|
| 1617 |
+ */ |
|
| 1618 |
+ public static function sign($message, $sk) |
|
| 1619 |
+ {
|
|
| 1620 |
+ return ParagonIE_Sodium_Core_Ed25519::sign($message, $sk); |
|
| 1621 |
+ } |
|
| 1622 |
+ |
|
| 1623 |
+ /** |
|
| 1624 |
+ * Opens a signed message. If valid, returns the message. |
|
| 1625 |
+ * |
|
| 1626 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 1627 |
+ * |
|
| 1628 |
+ * @param string $signedMessage |
|
| 1629 |
+ * @param string $pk |
|
| 1630 |
+ * @return string |
|
| 1631 |
+ * @throws SodiumException |
|
| 1632 |
+ * @throws TypeError |
|
| 1633 |
+ */ |
|
| 1634 |
+ public static function sign_open($signedMessage, $pk) |
|
| 1635 |
+ {
|
|
| 1636 |
+ return ParagonIE_Sodium_Core_Ed25519::sign_open($signedMessage, $pk); |
|
| 1637 |
+ } |
|
| 1638 |
+ |
|
| 1639 |
+ /** |
|
| 1640 |
+ * Verify a detached signature of a given message and public key. |
|
| 1641 |
+ * |
|
| 1642 |
+ * @internal Do not use this directly. Use ParagonIE_Sodium_Compat. |
|
| 1643 |
+ * |
|
| 1644 |
+ * @param string $signature |
|
| 1645 |
+ * @param string $message |
|
| 1646 |
+ * @param string $pk |
|
| 1647 |
+ * @return bool |
|
| 1648 |
+ * @throws SodiumException |
|
| 1649 |
+ * @throws TypeError |
|
| 1650 |
+ */ |
|
| 1651 |
+ public static function sign_verify_detached($signature, $message, $pk) |
|
| 1652 |
+ {
|
|
| 1653 |
+ return ParagonIE_Sodium_Core_Ed25519::verify_detached($signature, $message, $pk); |
|
| 1654 |
+ } |
|
| 1655 |
+} |