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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_File', false)) {
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+ return; |
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+} |
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+/** |
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+ * Class ParagonIE_Sodium_File |
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+ */ |
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+class ParagonIE_Sodium_File extends ParagonIE_Sodium_Core_Util |
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+{
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+ /* PHP's default buffer size is 8192 for fread()/fwrite(). */ |
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+ const BUFFER_SIZE = 8192; |
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+ |
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+ /** |
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+ * Box a file (rather than a string). Uses less memory than |
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+ * ParagonIE_Sodium_Compat::crypto_box(), but produces |
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+ * the same result. |
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+ * |
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+ * @param string $inputFile Absolute path to a file on the filesystem |
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+ * @param string $outputFile Absolute path to a file on the filesystem |
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+ * @param string $nonce Number to be used only once |
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+ * @param string $keyPair ECDH secret key and ECDH public key concatenated |
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+ * |
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+ * @return bool |
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+ * @throws SodiumException |
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+ * @throws TypeError |
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+ */ |
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+ public static function box($inputFile, $outputFile, $nonce, $keyPair) |
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+ {
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+ /* Type checks: */ |
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+ if (!is_string($inputFile)) {
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+ throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
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+ } |
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+ if (!is_string($outputFile)) {
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+ throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
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+ } |
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+ if (!is_string($nonce)) {
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+ throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.');
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+ } |
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+ |
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+ /* Input validation: */ |
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+ if (!is_string($keyPair)) {
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+ throw new TypeError('Argument 4 must be a string, ' . gettype($keyPair) . ' given.');
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+ } |
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+ if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_NONCEBYTES) {
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+ throw new TypeError('Argument 3 must be CRYPTO_BOX_NONCEBYTES bytes');
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+ } |
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+ if (self::strlen($keyPair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) {
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+ throw new TypeError('Argument 4 must be CRYPTO_BOX_KEYPAIRBYTES bytes');
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+ } |
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+ |
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+ /** @var int $size */ |
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+ $size = filesize($inputFile); |
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+ if (!is_int($size)) {
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+ throw new SodiumException('Could not obtain the file size');
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+ } |
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+ |
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+ /** @var resource $ifp */ |
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+ $ifp = fopen($inputFile, 'rb'); |
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+ if (!is_resource($ifp)) {
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+ throw new SodiumException('Could not open input file for reading');
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+ } |
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+ |
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+ /** @var resource $ofp */ |
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+ $ofp = fopen($outputFile, 'wb'); |
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+ if (!is_resource($ofp)) {
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+ fclose($ifp); |
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+ throw new SodiumException('Could not open output file for writing');
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+ } |
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+ |
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+ $res = self::box_encrypt($ifp, $ofp, $size, $nonce, $keyPair); |
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+ fclose($ifp); |
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+ fclose($ofp); |
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+ return $res; |
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+ } |
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+ |
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+ /** |
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+ * Open a boxed file (rather than a string). Uses less memory than |
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+ * ParagonIE_Sodium_Compat::crypto_box_open(), but produces |
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+ * the same result. |
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+ * |
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+ * Warning: Does not protect against TOCTOU attacks. You should |
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+ * just load the file into memory and use crypto_box_open() if |
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+ * you are worried about those. |
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+ * |
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+ * @param string $inputFile |
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+ * @param string $outputFile |
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+ * @param string $nonce |
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+ * @param string $keypair |
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+ * @return bool |
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+ * @throws SodiumException |
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+ * @throws TypeError |
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+ */ |
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+ public static function box_open($inputFile, $outputFile, $nonce, $keypair) |
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+ {
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+ /* Type checks: */ |
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+ if (!is_string($inputFile)) {
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+ throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
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+ } |
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+ if (!is_string($outputFile)) {
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+ throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
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+ } |
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+ if (!is_string($nonce)) {
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+ throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.');
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+ } |
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+ if (!is_string($keypair)) {
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+ throw new TypeError('Argument 4 must be a string, ' . gettype($keypair) . ' given.');
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+ } |
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+ |
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+ /* Input validation: */ |
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+ if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_NONCEBYTES) {
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+ throw new TypeError('Argument 4 must be CRYPTO_BOX_NONCEBYTES bytes');
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+ } |
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+ if (self::strlen($keypair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) {
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+ throw new TypeError('Argument 4 must be CRYPTO_BOX_KEYPAIRBYTES bytes');
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+ } |
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+ |
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+ /** @var int $size */ |
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+ $size = filesize($inputFile); |
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+ if (!is_int($size)) {
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+ throw new SodiumException('Could not obtain the file size');
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+ } |
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+ |
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+ /** @var resource $ifp */ |
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+ $ifp = fopen($inputFile, 'rb'); |
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+ if (!is_resource($ifp)) {
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+ throw new SodiumException('Could not open input file for reading');
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+ } |
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+ |
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+ /** @var resource $ofp */ |
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+ $ofp = fopen($outputFile, 'wb'); |
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+ if (!is_resource($ofp)) {
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+ fclose($ifp); |
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+ throw new SodiumException('Could not open output file for writing');
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+ } |
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+ |
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+ $res = self::box_decrypt($ifp, $ofp, $size, $nonce, $keypair); |
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+ fclose($ifp); |
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+ fclose($ofp); |
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+ try {
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+ ParagonIE_Sodium_Compat::memzero($nonce); |
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+ ParagonIE_Sodium_Compat::memzero($ephKeypair); |
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+ } catch (SodiumException $ex) {
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+ if (isset($ephKeypair)) {
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+ unset($ephKeypair); |
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+ } |
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+ } |
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+ return $res; |
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+ } |
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+ |
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+ /** |
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+ * Seal a file (rather than a string). Uses less memory than |
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+ * ParagonIE_Sodium_Compat::crypto_box_seal(), but produces |
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+ * the same result. |
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+ * |
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+ * @param string $inputFile Absolute path to a file on the filesystem |
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+ * @param string $outputFile Absolute path to a file on the filesystem |
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+ * @param string $publicKey ECDH public key |
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+ * |
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+ * @return bool |
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+ * @throws SodiumException |
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+ * @throws TypeError |
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+ */ |
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+ public static function box_seal($inputFile, $outputFile, $publicKey) |
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+ {
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+ /* Type checks: */ |
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+ if (!is_string($inputFile)) {
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+ throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
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+ } |
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+ if (!is_string($outputFile)) {
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+ throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
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+ } |
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+ if (!is_string($publicKey)) {
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+ throw new TypeError('Argument 3 must be a string, ' . gettype($publicKey) . ' given.');
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+ } |
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+ |
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+ /* Input validation: */ |
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+ if (self::strlen($publicKey) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES) {
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+ throw new TypeError('Argument 3 must be CRYPTO_BOX_PUBLICKEYBYTES bytes');
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+ } |
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+ |
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+ /** @var int $size */ |
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+ $size = filesize($inputFile); |
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+ if (!is_int($size)) {
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+ throw new SodiumException('Could not obtain the file size');
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+ } |
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+ |
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+ /** @var resource $ifp */ |
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+ $ifp = fopen($inputFile, 'rb'); |
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+ if (!is_resource($ifp)) {
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+ throw new SodiumException('Could not open input file for reading');
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+ } |
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+ |
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+ /** @var resource $ofp */ |
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+ $ofp = fopen($outputFile, 'wb'); |
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+ if (!is_resource($ofp)) {
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+ fclose($ifp); |
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+ throw new SodiumException('Could not open output file for writing');
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+ } |
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+ |
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+ /** @var string $ephKeypair */ |
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+ $ephKeypair = ParagonIE_Sodium_Compat::crypto_box_keypair(); |
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+ |
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+ /** @var string $msgKeypair */ |
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+ $msgKeypair = ParagonIE_Sodium_Compat::crypto_box_keypair_from_secretkey_and_publickey( |
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+ ParagonIE_Sodium_Compat::crypto_box_secretkey($ephKeypair), |
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+ $publicKey |
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+ ); |
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+ |
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+ /** @var string $ephemeralPK */ |
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+ $ephemeralPK = ParagonIE_Sodium_Compat::crypto_box_publickey($ephKeypair); |
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+ |
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+ /** @var string $nonce */ |
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+ $nonce = ParagonIE_Sodium_Compat::crypto_generichash( |
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+ $ephemeralPK . $publicKey, |
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+ '', |
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+ 24 |
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+ ); |
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+ |
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+ /** @var int $firstWrite */ |
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+ $firstWrite = fwrite( |
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+ $ofp, |
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+ $ephemeralPK, |
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+ ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES |
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+ ); |
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+ if (!is_int($firstWrite)) {
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+ fclose($ifp); |
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+ fclose($ofp); |
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+ ParagonIE_Sodium_Compat::memzero($ephKeypair); |
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+ throw new SodiumException('Could not write to output file');
|
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+ } |
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+ if ($firstWrite !== ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES) {
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+ ParagonIE_Sodium_Compat::memzero($ephKeypair); |
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+ fclose($ifp); |
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+ fclose($ofp); |
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+ throw new SodiumException('Error writing public key to output file');
|
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+ } |
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+ |
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+ $res = self::box_encrypt($ifp, $ofp, $size, $nonce, $msgKeypair); |
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+ fclose($ifp); |
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+ fclose($ofp); |
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+ try {
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+ ParagonIE_Sodium_Compat::memzero($nonce); |
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+ ParagonIE_Sodium_Compat::memzero($ephKeypair); |
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+ } catch (SodiumException $ex) {
|
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| 246 |
+ /** @psalm-suppress PossiblyUndefinedVariable */ |
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+ unset($ephKeypair); |
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+ } |
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+ return $res; |
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+ } |
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+ |
|
| 252 |
+ /** |
|
| 253 |
+ * Open a sealed file (rather than a string). Uses less memory than |
|
| 254 |
+ * ParagonIE_Sodium_Compat::crypto_box_seal_open(), but produces |
|
| 255 |
+ * the same result. |
|
| 256 |
+ * |
|
| 257 |
+ * Warning: Does not protect against TOCTOU attacks. You should |
|
| 258 |
+ * just load the file into memory and use crypto_box_seal_open() if |
|
| 259 |
+ * you are worried about those. |
|
| 260 |
+ * |
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+ * @param string $inputFile |
|
| 262 |
+ * @param string $outputFile |
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+ * @param string $ecdhKeypair |
|
| 264 |
+ * @return bool |
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| 265 |
+ * @throws SodiumException |
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| 266 |
+ * @throws TypeError |
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| 267 |
+ */ |
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+ public static function box_seal_open($inputFile, $outputFile, $ecdhKeypair) |
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+ {
|
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+ /* Type checks: */ |
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| 271 |
+ if (!is_string($inputFile)) {
|
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| 272 |
+ throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
|
|
| 273 |
+ } |
|
| 274 |
+ if (!is_string($outputFile)) {
|
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| 275 |
+ throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
|
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| 276 |
+ } |
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| 277 |
+ if (!is_string($ecdhKeypair)) {
|
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| 278 |
+ throw new TypeError('Argument 3 must be a string, ' . gettype($ecdhKeypair) . ' given.');
|
|
| 279 |
+ } |
|
| 280 |
+ |
|
| 281 |
+ /* Input validation: */ |
|
| 282 |
+ if (self::strlen($ecdhKeypair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) {
|
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| 283 |
+ throw new TypeError('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES bytes');
|
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| 284 |
+ } |
|
| 285 |
+ |
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| 286 |
+ $publicKey = ParagonIE_Sodium_Compat::crypto_box_publickey($ecdhKeypair); |
|
| 287 |
+ |
|
| 288 |
+ /** @var int $size */ |
|
| 289 |
+ $size = filesize($inputFile); |
|
| 290 |
+ if (!is_int($size)) {
|
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| 291 |
+ throw new SodiumException('Could not obtain the file size');
|
|
| 292 |
+ } |
|
| 293 |
+ |
|
| 294 |
+ /** @var resource $ifp */ |
|
| 295 |
+ $ifp = fopen($inputFile, 'rb'); |
|
| 296 |
+ if (!is_resource($ifp)) {
|
|
| 297 |
+ throw new SodiumException('Could not open input file for reading');
|
|
| 298 |
+ } |
|
| 299 |
+ |
|
| 300 |
+ /** @var resource $ofp */ |
|
| 301 |
+ $ofp = fopen($outputFile, 'wb'); |
|
| 302 |
+ if (!is_resource($ofp)) {
|
|
| 303 |
+ fclose($ifp); |
|
| 304 |
+ throw new SodiumException('Could not open output file for writing');
|
|
| 305 |
+ } |
|
| 306 |
+ |
|
| 307 |
+ $ephemeralPK = fread($ifp, ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES); |
|
| 308 |
+ if (!is_string($ephemeralPK)) {
|
|
| 309 |
+ throw new SodiumException('Could not read input file');
|
|
| 310 |
+ } |
|
| 311 |
+ if (self::strlen($ephemeralPK) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES) {
|
|
| 312 |
+ fclose($ifp); |
|
| 313 |
+ fclose($ofp); |
|
| 314 |
+ throw new SodiumException('Could not read public key from sealed file');
|
|
| 315 |
+ } |
|
| 316 |
+ |
|
| 317 |
+ $nonce = ParagonIE_Sodium_Compat::crypto_generichash( |
|
| 318 |
+ $ephemeralPK . $publicKey, |
|
| 319 |
+ '', |
|
| 320 |
+ 24 |
|
| 321 |
+ ); |
|
| 322 |
+ $msgKeypair = ParagonIE_Sodium_Compat::crypto_box_keypair_from_secretkey_and_publickey( |
|
| 323 |
+ ParagonIE_Sodium_Compat::crypto_box_secretkey($ecdhKeypair), |
|
| 324 |
+ $ephemeralPK |
|
| 325 |
+ ); |
|
| 326 |
+ |
|
| 327 |
+ $res = self::box_decrypt($ifp, $ofp, $size, $nonce, $msgKeypair); |
|
| 328 |
+ fclose($ifp); |
|
| 329 |
+ fclose($ofp); |
|
| 330 |
+ try {
|
|
| 331 |
+ ParagonIE_Sodium_Compat::memzero($nonce); |
|
| 332 |
+ ParagonIE_Sodium_Compat::memzero($ephKeypair); |
|
| 333 |
+ } catch (SodiumException $ex) {
|
|
| 334 |
+ if (isset($ephKeypair)) {
|
|
| 335 |
+ unset($ephKeypair); |
|
| 336 |
+ } |
|
| 337 |
+ } |
|
| 338 |
+ return $res; |
|
| 339 |
+ } |
|
| 340 |
+ |
|
| 341 |
+ /** |
|
| 342 |
+ * Calculate the BLAKE2b hash of a file. |
|
| 343 |
+ * |
|
| 344 |
+ * @param string $filePath Absolute path to a file on the filesystem |
|
| 345 |
+ * @param string|null $key BLAKE2b key |
|
| 346 |
+ * @param int $outputLength Length of hash output |
|
| 347 |
+ * |
|
| 348 |
+ * @return string BLAKE2b hash |
|
| 349 |
+ * @throws SodiumException |
|
| 350 |
+ * @throws TypeError |
|
| 351 |
+ * @psalm-suppress FailedTypeResolution |
|
| 352 |
+ */ |
|
| 353 |
+ public static function generichash($filePath, $key = '', $outputLength = 32) |
|
| 354 |
+ {
|
|
| 355 |
+ /* Type checks: */ |
|
| 356 |
+ if (!is_string($filePath)) {
|
|
| 357 |
+ throw new TypeError('Argument 1 must be a string, ' . gettype($filePath) . ' given.');
|
|
| 358 |
+ } |
|
| 359 |
+ if (!is_string($key)) {
|
|
| 360 |
+ if (is_null($key)) {
|
|
| 361 |
+ $key = ''; |
|
| 362 |
+ } else {
|
|
| 363 |
+ throw new TypeError('Argument 2 must be a string, ' . gettype($key) . ' given.');
|
|
| 364 |
+ } |
|
| 365 |
+ } |
|
| 366 |
+ if (!is_int($outputLength)) {
|
|
| 367 |
+ if (!is_numeric($outputLength)) {
|
|
| 368 |
+ throw new TypeError('Argument 3 must be an integer, ' . gettype($outputLength) . ' given.');
|
|
| 369 |
+ } |
|
| 370 |
+ $outputLength = (int) $outputLength; |
|
| 371 |
+ } |
|
| 372 |
+ |
|
| 373 |
+ /* Input validation: */ |
|
| 374 |
+ if (!empty($key)) {
|
|
| 375 |
+ if (self::strlen($key) < ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_KEYBYTES_MIN) {
|
|
| 376 |
+ throw new TypeError('Argument 2 must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes');
|
|
| 377 |
+ } |
|
| 378 |
+ if (self::strlen($key) > ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_KEYBYTES_MAX) {
|
|
| 379 |
+ throw new TypeError('Argument 2 must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes');
|
|
| 380 |
+ } |
|
| 381 |
+ } |
|
| 382 |
+ if ($outputLength < ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_BYTES_MIN) {
|
|
| 383 |
+ throw new SodiumException('Argument 3 must be at least CRYPTO_GENERICHASH_BYTES_MIN');
|
|
| 384 |
+ } |
|
| 385 |
+ if ($outputLength > ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_BYTES_MAX) {
|
|
| 386 |
+ throw new SodiumException('Argument 3 must be at least CRYPTO_GENERICHASH_BYTES_MAX');
|
|
| 387 |
+ } |
|
| 388 |
+ |
|
| 389 |
+ /** @var int $size */ |
|
| 390 |
+ $size = filesize($filePath); |
|
| 391 |
+ if (!is_int($size)) {
|
|
| 392 |
+ throw new SodiumException('Could not obtain the file size');
|
|
| 393 |
+ } |
|
| 394 |
+ |
|
| 395 |
+ /** @var resource $fp */ |
|
| 396 |
+ $fp = fopen($filePath, 'rb'); |
|
| 397 |
+ if (!is_resource($fp)) {
|
|
| 398 |
+ throw new SodiumException('Could not open input file for reading');
|
|
| 399 |
+ } |
|
| 400 |
+ $ctx = ParagonIE_Sodium_Compat::crypto_generichash_init($key, $outputLength); |
|
| 401 |
+ while ($size > 0) {
|
|
| 402 |
+ $blockSize = $size > 64 |
|
| 403 |
+ ? 64 |
|
| 404 |
+ : $size; |
|
| 405 |
+ $read = fread($fp, $blockSize); |
|
| 406 |
+ if (!is_string($read)) {
|
|
| 407 |
+ throw new SodiumException('Could not read input file');
|
|
| 408 |
+ } |
|
| 409 |
+ ParagonIE_Sodium_Compat::crypto_generichash_update($ctx, $read); |
|
| 410 |
+ $size -= $blockSize; |
|
| 411 |
+ } |
|
| 412 |
+ |
|
| 413 |
+ fclose($fp); |
|
| 414 |
+ return ParagonIE_Sodium_Compat::crypto_generichash_final($ctx, $outputLength); |
|
| 415 |
+ } |
|
| 416 |
+ |
|
| 417 |
+ /** |
|
| 418 |
+ * Encrypt a file (rather than a string). Uses less memory than |
|
| 419 |
+ * ParagonIE_Sodium_Compat::crypto_secretbox(), but produces |
|
| 420 |
+ * the same result. |
|
| 421 |
+ * |
|
| 422 |
+ * @param string $inputFile Absolute path to a file on the filesystem |
|
| 423 |
+ * @param string $outputFile Absolute path to a file on the filesystem |
|
| 424 |
+ * @param string $nonce Number to be used only once |
|
| 425 |
+ * @param string $key Encryption key |
|
| 426 |
+ * |
|
| 427 |
+ * @return bool |
|
| 428 |
+ * @throws SodiumException |
|
| 429 |
+ * @throws TypeError |
|
| 430 |
+ */ |
|
| 431 |
+ public static function secretbox($inputFile, $outputFile, $nonce, $key) |
|
| 432 |
+ {
|
|
| 433 |
+ /* Type checks: */ |
|
| 434 |
+ if (!is_string($inputFile)) {
|
|
| 435 |
+ throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given..');
|
|
| 436 |
+ } |
|
| 437 |
+ if (!is_string($outputFile)) {
|
|
| 438 |
+ throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
|
|
| 439 |
+ } |
|
| 440 |
+ if (!is_string($nonce)) {
|
|
| 441 |
+ throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.');
|
|
| 442 |
+ } |
|
| 443 |
+ |
|
| 444 |
+ /* Input validation: */ |
|
| 445 |
+ if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_NONCEBYTES) {
|
|
| 446 |
+ throw new TypeError('Argument 3 must be CRYPTO_SECRETBOX_NONCEBYTES bytes');
|
|
| 447 |
+ } |
|
| 448 |
+ if (!is_string($key)) {
|
|
| 449 |
+ throw new TypeError('Argument 4 must be a string, ' . gettype($key) . ' given.');
|
|
| 450 |
+ } |
|
| 451 |
+ if (self::strlen($key) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_KEYBYTES) {
|
|
| 452 |
+ throw new TypeError('Argument 4 must be CRYPTO_SECRETBOX_KEYBYTES bytes');
|
|
| 453 |
+ } |
|
| 454 |
+ |
|
| 455 |
+ /** @var int $size */ |
|
| 456 |
+ $size = filesize($inputFile); |
|
| 457 |
+ if (!is_int($size)) {
|
|
| 458 |
+ throw new SodiumException('Could not obtain the file size');
|
|
| 459 |
+ } |
|
| 460 |
+ |
|
| 461 |
+ /** @var resource $ifp */ |
|
| 462 |
+ $ifp = fopen($inputFile, 'rb'); |
|
| 463 |
+ if (!is_resource($ifp)) {
|
|
| 464 |
+ throw new SodiumException('Could not open input file for reading');
|
|
| 465 |
+ } |
|
| 466 |
+ |
|
| 467 |
+ /** @var resource $ofp */ |
|
| 468 |
+ $ofp = fopen($outputFile, 'wb'); |
|
| 469 |
+ if (!is_resource($ofp)) {
|
|
| 470 |
+ fclose($ifp); |
|
| 471 |
+ throw new SodiumException('Could not open output file for writing');
|
|
| 472 |
+ } |
|
| 473 |
+ |
|
| 474 |
+ $res = self::secretbox_encrypt($ifp, $ofp, $size, $nonce, $key); |
|
| 475 |
+ fclose($ifp); |
|
| 476 |
+ fclose($ofp); |
|
| 477 |
+ return $res; |
|
| 478 |
+ } |
|
| 479 |
+ /** |
|
| 480 |
+ * Seal a file (rather than a string). Uses less memory than |
|
| 481 |
+ * ParagonIE_Sodium_Compat::crypto_secretbox_open(), but produces |
|
| 482 |
+ * the same result. |
|
| 483 |
+ * |
|
| 484 |
+ * Warning: Does not protect against TOCTOU attacks. You should |
|
| 485 |
+ * just load the file into memory and use crypto_secretbox_open() if |
|
| 486 |
+ * you are worried about those. |
|
| 487 |
+ * |
|
| 488 |
+ * @param string $inputFile |
|
| 489 |
+ * @param string $outputFile |
|
| 490 |
+ * @param string $nonce |
|
| 491 |
+ * @param string $key |
|
| 492 |
+ * @return bool |
|
| 493 |
+ * @throws SodiumException |
|
| 494 |
+ * @throws TypeError |
|
| 495 |
+ */ |
|
| 496 |
+ public static function secretbox_open($inputFile, $outputFile, $nonce, $key) |
|
| 497 |
+ {
|
|
| 498 |
+ /* Type checks: */ |
|
| 499 |
+ if (!is_string($inputFile)) {
|
|
| 500 |
+ throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
|
|
| 501 |
+ } |
|
| 502 |
+ if (!is_string($outputFile)) {
|
|
| 503 |
+ throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
|
|
| 504 |
+ } |
|
| 505 |
+ if (!is_string($nonce)) {
|
|
| 506 |
+ throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.');
|
|
| 507 |
+ } |
|
| 508 |
+ if (!is_string($key)) {
|
|
| 509 |
+ throw new TypeError('Argument 4 must be a string, ' . gettype($key) . ' given.');
|
|
| 510 |
+ } |
|
| 511 |
+ |
|
| 512 |
+ /* Input validation: */ |
|
| 513 |
+ if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_NONCEBYTES) {
|
|
| 514 |
+ throw new TypeError('Argument 4 must be CRYPTO_SECRETBOX_NONCEBYTES bytes');
|
|
| 515 |
+ } |
|
| 516 |
+ if (self::strlen($key) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_KEYBYTES) {
|
|
| 517 |
+ throw new TypeError('Argument 4 must be CRYPTO_SECRETBOXBOX_KEYBYTES bytes');
|
|
| 518 |
+ } |
|
| 519 |
+ |
|
| 520 |
+ /** @var int $size */ |
|
| 521 |
+ $size = filesize($inputFile); |
|
| 522 |
+ if (!is_int($size)) {
|
|
| 523 |
+ throw new SodiumException('Could not obtain the file size');
|
|
| 524 |
+ } |
|
| 525 |
+ |
|
| 526 |
+ /** @var resource $ifp */ |
|
| 527 |
+ $ifp = fopen($inputFile, 'rb'); |
|
| 528 |
+ if (!is_resource($ifp)) {
|
|
| 529 |
+ throw new SodiumException('Could not open input file for reading');
|
|
| 530 |
+ } |
|
| 531 |
+ |
|
| 532 |
+ /** @var resource $ofp */ |
|
| 533 |
+ $ofp = fopen($outputFile, 'wb'); |
|
| 534 |
+ if (!is_resource($ofp)) {
|
|
| 535 |
+ fclose($ifp); |
|
| 536 |
+ throw new SodiumException('Could not open output file for writing');
|
|
| 537 |
+ } |
|
| 538 |
+ |
|
| 539 |
+ $res = self::secretbox_decrypt($ifp, $ofp, $size, $nonce, $key); |
|
| 540 |
+ fclose($ifp); |
|
| 541 |
+ fclose($ofp); |
|
| 542 |
+ try {
|
|
| 543 |
+ ParagonIE_Sodium_Compat::memzero($key); |
|
| 544 |
+ } catch (SodiumException $ex) {
|
|
| 545 |
+ /** @psalm-suppress PossiblyUndefinedVariable */ |
|
| 546 |
+ unset($key); |
|
| 547 |
+ } |
|
| 548 |
+ return $res; |
|
| 549 |
+ } |
|
| 550 |
+ |
|
| 551 |
+ /** |
|
| 552 |
+ * Sign a file (rather than a string). Uses less memory than |
|
| 553 |
+ * ParagonIE_Sodium_Compat::crypto_sign_detached(), but produces |
|
| 554 |
+ * the same result. |
|
| 555 |
+ * |
|
| 556 |
+ * @param string $filePath Absolute path to a file on the filesystem |
|
| 557 |
+ * @param string $secretKey Secret signing key |
|
| 558 |
+ * |
|
| 559 |
+ * @return string Ed25519 signature |
|
| 560 |
+ * @throws SodiumException |
|
| 561 |
+ * @throws TypeError |
|
| 562 |
+ */ |
|
| 563 |
+ public static function sign($filePath, $secretKey) |
|
| 564 |
+ {
|
|
| 565 |
+ /* Type checks: */ |
|
| 566 |
+ if (!is_string($filePath)) {
|
|
| 567 |
+ throw new TypeError('Argument 1 must be a string, ' . gettype($filePath) . ' given.');
|
|
| 568 |
+ } |
|
| 569 |
+ if (!is_string($secretKey)) {
|
|
| 570 |
+ throw new TypeError('Argument 2 must be a string, ' . gettype($secretKey) . ' given.');
|
|
| 571 |
+ } |
|
| 572 |
+ |
|
| 573 |
+ /* Input validation: */ |
|
| 574 |
+ if (self::strlen($secretKey) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_SECRETKEYBYTES) {
|
|
| 575 |
+ throw new TypeError('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES bytes');
|
|
| 576 |
+ } |
|
| 577 |
+ if (PHP_INT_SIZE === 4) {
|
|
| 578 |
+ return self::sign_core32($filePath, $secretKey); |
|
| 579 |
+ } |
|
| 580 |
+ |
|
| 581 |
+ /** @var int $size */ |
|
| 582 |
+ $size = filesize($filePath); |
|
| 583 |
+ if (!is_int($size)) {
|
|
| 584 |
+ throw new SodiumException('Could not obtain the file size');
|
|
| 585 |
+ } |
|
| 586 |
+ |
|
| 587 |
+ /** @var resource $fp */ |
|
| 588 |
+ $fp = fopen($filePath, 'rb'); |
|
| 589 |
+ if (!is_resource($fp)) {
|
|
| 590 |
+ throw new SodiumException('Could not open input file for reading');
|
|
| 591 |
+ } |
|
| 592 |
+ |
|
| 593 |
+ /** @var string $az */ |
|
| 594 |
+ $az = hash('sha512', self::substr($secretKey, 0, 32), true);
|
|
| 595 |
+ |
|
| 596 |
+ $az[0] = self::intToChr(self::chrToInt($az[0]) & 248); |
|
| 597 |
+ $az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64); |
|
| 598 |
+ |
|
| 599 |
+ $hs = hash_init('sha512');
|
|
| 600 |
+ self::hash_update($hs, self::substr($az, 32, 32)); |
|
| 601 |
+ /** @var resource $hs */ |
|
| 602 |
+ $hs = self::updateHashWithFile($hs, $fp, $size); |
|
| 603 |
+ |
|
| 604 |
+ /** @var string $nonceHash */ |
|
| 605 |
+ $nonceHash = hash_final($hs, true); |
|
| 606 |
+ |
|
| 607 |
+ /** @var string $pk */ |
|
| 608 |
+ $pk = self::substr($secretKey, 32, 32); |
|
| 609 |
+ |
|
| 610 |
+ /** @var string $nonce */ |
|
| 611 |
+ $nonce = ParagonIE_Sodium_Core_Ed25519::sc_reduce($nonceHash) . self::substr($nonceHash, 32); |
|
| 612 |
+ |
|
| 613 |
+ /** @var string $sig */ |
|
| 614 |
+ $sig = ParagonIE_Sodium_Core_Ed25519::ge_p3_tobytes( |
|
| 615 |
+ ParagonIE_Sodium_Core_Ed25519::ge_scalarmult_base($nonce) |
|
| 616 |
+ ); |
|
| 617 |
+ |
|
| 618 |
+ $hs = hash_init('sha512');
|
|
| 619 |
+ self::hash_update($hs, self::substr($sig, 0, 32)); |
|
| 620 |
+ self::hash_update($hs, self::substr($pk, 0, 32)); |
|
| 621 |
+ /** @var resource $hs */ |
|
| 622 |
+ $hs = self::updateHashWithFile($hs, $fp, $size); |
|
| 623 |
+ |
|
| 624 |
+ /** @var string $hramHash */ |
|
| 625 |
+ $hramHash = hash_final($hs, true); |
|
| 626 |
+ |
|
| 627 |
+ /** @var string $hram */ |
|
| 628 |
+ $hram = ParagonIE_Sodium_Core_Ed25519::sc_reduce($hramHash); |
|
| 629 |
+ |
|
| 630 |
+ /** @var string $sigAfter */ |
|
| 631 |
+ $sigAfter = ParagonIE_Sodium_Core_Ed25519::sc_muladd($hram, $az, $nonce); |
|
| 632 |
+ |
|
| 633 |
+ /** @var string $sig */ |
|
| 634 |
+ $sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32); |
|
| 635 |
+ |
|
| 636 |
+ try {
|
|
| 637 |
+ ParagonIE_Sodium_Compat::memzero($az); |
|
| 638 |
+ } catch (SodiumException $ex) {
|
|
| 639 |
+ $az = null; |
|
| 640 |
+ } |
|
| 641 |
+ fclose($fp); |
|
| 642 |
+ return $sig; |
|
| 643 |
+ } |
|
| 644 |
+ |
|
| 645 |
+ /** |
|
| 646 |
+ * Verify a file (rather than a string). Uses less memory than |
|
| 647 |
+ * ParagonIE_Sodium_Compat::crypto_sign_verify_detached(), but |
|
| 648 |
+ * produces the same result. |
|
| 649 |
+ * |
|
| 650 |
+ * @param string $sig Ed25519 signature |
|
| 651 |
+ * @param string $filePath Absolute path to a file on the filesystem |
|
| 652 |
+ * @param string $publicKey Signing public key |
|
| 653 |
+ * |
|
| 654 |
+ * @return bool |
|
| 655 |
+ * @throws SodiumException |
|
| 656 |
+ * @throws TypeError |
|
| 657 |
+ * @throws Exception |
|
| 658 |
+ */ |
|
| 659 |
+ public static function verify($sig, $filePath, $publicKey) |
|
| 660 |
+ {
|
|
| 661 |
+ /* Type checks: */ |
|
| 662 |
+ if (!is_string($sig)) {
|
|
| 663 |
+ throw new TypeError('Argument 1 must be a string, ' . gettype($sig) . ' given.');
|
|
| 664 |
+ } |
|
| 665 |
+ if (!is_string($filePath)) {
|
|
| 666 |
+ throw new TypeError('Argument 2 must be a string, ' . gettype($filePath) . ' given.');
|
|
| 667 |
+ } |
|
| 668 |
+ if (!is_string($publicKey)) {
|
|
| 669 |
+ throw new TypeError('Argument 3 must be a string, ' . gettype($publicKey) . ' given.');
|
|
| 670 |
+ } |
|
| 671 |
+ |
|
| 672 |
+ /* Input validation: */ |
|
| 673 |
+ if (self::strlen($sig) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_BYTES) {
|
|
| 674 |
+ throw new TypeError('Argument 1 must be CRYPTO_SIGN_BYTES bytes');
|
|
| 675 |
+ } |
|
| 676 |
+ if (self::strlen($publicKey) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_PUBLICKEYBYTES) {
|
|
| 677 |
+ throw new TypeError('Argument 3 must be CRYPTO_SIGN_PUBLICKEYBYTES bytes');
|
|
| 678 |
+ } |
|
| 679 |
+ if (self::strlen($sig) < 64) {
|
|
| 680 |
+ throw new SodiumException('Signature is too short');
|
|
| 681 |
+ } |
|
| 682 |
+ |
|
| 683 |
+ if (PHP_INT_SIZE === 4) {
|
|
| 684 |
+ return self::verify_core32($sig, $filePath, $publicKey); |
|
| 685 |
+ } |
|
| 686 |
+ |
|
| 687 |
+ /* Security checks */ |
|
| 688 |
+ if ( |
|
| 689 |
+ (ParagonIE_Sodium_Core_Ed25519::chrToInt($sig[63]) & 240) |
|
| 690 |
+ && |
|
| 691 |
+ ParagonIE_Sodium_Core_Ed25519::check_S_lt_L(self::substr($sig, 32, 32)) |
|
| 692 |
+ ) {
|
|
| 693 |
+ throw new SodiumException('S < L - Invalid signature');
|
|
| 694 |
+ } |
|
| 695 |
+ if (ParagonIE_Sodium_Core_Ed25519::small_order($sig)) {
|
|
| 696 |
+ throw new SodiumException('Signature is on too small of an order');
|
|
| 697 |
+ } |
|
| 698 |
+ if ((self::chrToInt($sig[63]) & 224) !== 0) {
|
|
| 699 |
+ throw new SodiumException('Invalid signature');
|
|
| 700 |
+ } |
|
| 701 |
+ $d = 0; |
|
| 702 |
+ for ($i = 0; $i < 32; ++$i) {
|
|
| 703 |
+ $d |= self::chrToInt($publicKey[$i]); |
|
| 704 |
+ } |
|
| 705 |
+ if ($d === 0) {
|
|
| 706 |
+ throw new SodiumException('All zero public key');
|
|
| 707 |
+ } |
|
| 708 |
+ |
|
| 709 |
+ /** @var int $size */ |
|
| 710 |
+ $size = filesize($filePath); |
|
| 711 |
+ if (!is_int($size)) {
|
|
| 712 |
+ throw new SodiumException('Could not obtain the file size');
|
|
| 713 |
+ } |
|
| 714 |
+ |
|
| 715 |
+ /** @var resource $fp */ |
|
| 716 |
+ $fp = fopen($filePath, 'rb'); |
|
| 717 |
+ if (!is_resource($fp)) {
|
|
| 718 |
+ throw new SodiumException('Could not open input file for reading');
|
|
| 719 |
+ } |
|
| 720 |
+ |
|
| 721 |
+ /** @var bool The original value of ParagonIE_Sodium_Compat::$fastMult */ |
|
| 722 |
+ $orig = ParagonIE_Sodium_Compat::$fastMult; |
|
| 723 |
+ |
|
| 724 |
+ // Set ParagonIE_Sodium_Compat::$fastMult to true to speed up verification. |
|
| 725 |
+ ParagonIE_Sodium_Compat::$fastMult = true; |
|
| 726 |
+ |
|
| 727 |
+ /** @var ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A */ |
|
| 728 |
+ $A = ParagonIE_Sodium_Core_Ed25519::ge_frombytes_negate_vartime($publicKey); |
|
| 729 |
+ |
|
| 730 |
+ $hs = hash_init('sha512');
|
|
| 731 |
+ self::hash_update($hs, self::substr($sig, 0, 32)); |
|
| 732 |
+ self::hash_update($hs, self::substr($publicKey, 0, 32)); |
|
| 733 |
+ /** @var resource $hs */ |
|
| 734 |
+ $hs = self::updateHashWithFile($hs, $fp, $size); |
|
| 735 |
+ /** @var string $hDigest */ |
|
| 736 |
+ $hDigest = hash_final($hs, true); |
|
| 737 |
+ |
|
| 738 |
+ /** @var string $h */ |
|
| 739 |
+ $h = ParagonIE_Sodium_Core_Ed25519::sc_reduce($hDigest) . self::substr($hDigest, 32); |
|
| 740 |
+ |
|
| 741 |
+ /** @var ParagonIE_Sodium_Core_Curve25519_Ge_P2 $R */ |
|
| 742 |
+ $R = ParagonIE_Sodium_Core_Ed25519::ge_double_scalarmult_vartime( |
|
| 743 |
+ $h, |
|
| 744 |
+ $A, |
|
| 745 |
+ self::substr($sig, 32) |
|
| 746 |
+ ); |
|
| 747 |
+ |
|
| 748 |
+ /** @var string $rcheck */ |
|
| 749 |
+ $rcheck = ParagonIE_Sodium_Core_Ed25519::ge_tobytes($R); |
|
| 750 |
+ |
|
| 751 |
+ // Close the file handle |
|
| 752 |
+ fclose($fp); |
|
| 753 |
+ |
|
| 754 |
+ // Reset ParagonIE_Sodium_Compat::$fastMult to what it was before. |
|
| 755 |
+ ParagonIE_Sodium_Compat::$fastMult = $orig; |
|
| 756 |
+ return self::verify_32($rcheck, self::substr($sig, 0, 32)); |
|
| 757 |
+ } |
|
| 758 |
+ |
|
| 759 |
+ /** |
|
| 760 |
+ * @param resource $ifp |
|
| 761 |
+ * @param resource $ofp |
|
| 762 |
+ * @param int $mlen |
|
| 763 |
+ * @param string $nonce |
|
| 764 |
+ * @param string $boxKeypair |
|
| 765 |
+ * @return bool |
|
| 766 |
+ * @throws SodiumException |
|
| 767 |
+ * @throws TypeError |
|
| 768 |
+ */ |
|
| 769 |
+ protected static function box_encrypt($ifp, $ofp, $mlen, $nonce, $boxKeypair) |
|
| 770 |
+ {
|
|
| 771 |
+ if (PHP_INT_SIZE === 4) {
|
|
| 772 |
+ return self::secretbox_encrypt( |
|
| 773 |
+ $ifp, |
|
| 774 |
+ $ofp, |
|
| 775 |
+ $mlen, |
|
| 776 |
+ $nonce, |
|
| 777 |
+ ParagonIE_Sodium_Crypto32::box_beforenm( |
|
| 778 |
+ ParagonIE_Sodium_Crypto32::box_secretkey($boxKeypair), |
|
| 779 |
+ ParagonIE_Sodium_Crypto32::box_publickey($boxKeypair) |
|
| 780 |
+ ) |
|
| 781 |
+ ); |
|
| 782 |
+ } |
|
| 783 |
+ return self::secretbox_encrypt( |
|
| 784 |
+ $ifp, |
|
| 785 |
+ $ofp, |
|
| 786 |
+ $mlen, |
|
| 787 |
+ $nonce, |
|
| 788 |
+ ParagonIE_Sodium_Crypto::box_beforenm( |
|
| 789 |
+ ParagonIE_Sodium_Crypto::box_secretkey($boxKeypair), |
|
| 790 |
+ ParagonIE_Sodium_Crypto::box_publickey($boxKeypair) |
|
| 791 |
+ ) |
|
| 792 |
+ ); |
|
| 793 |
+ } |
|
| 794 |
+ |
|
| 795 |
+ |
|
| 796 |
+ /** |
|
| 797 |
+ * @param resource $ifp |
|
| 798 |
+ * @param resource $ofp |
|
| 799 |
+ * @param int $mlen |
|
| 800 |
+ * @param string $nonce |
|
| 801 |
+ * @param string $boxKeypair |
|
| 802 |
+ * @return bool |
|
| 803 |
+ * @throws SodiumException |
|
| 804 |
+ * @throws TypeError |
|
| 805 |
+ */ |
|
| 806 |
+ protected static function box_decrypt($ifp, $ofp, $mlen, $nonce, $boxKeypair) |
|
| 807 |
+ {
|
|
| 808 |
+ if (PHP_INT_SIZE === 4) {
|
|
| 809 |
+ return self::secretbox_decrypt( |
|
| 810 |
+ $ifp, |
|
| 811 |
+ $ofp, |
|
| 812 |
+ $mlen, |
|
| 813 |
+ $nonce, |
|
| 814 |
+ ParagonIE_Sodium_Crypto32::box_beforenm( |
|
| 815 |
+ ParagonIE_Sodium_Crypto32::box_secretkey($boxKeypair), |
|
| 816 |
+ ParagonIE_Sodium_Crypto32::box_publickey($boxKeypair) |
|
| 817 |
+ ) |
|
| 818 |
+ ); |
|
| 819 |
+ } |
|
| 820 |
+ return self::secretbox_decrypt( |
|
| 821 |
+ $ifp, |
|
| 822 |
+ $ofp, |
|
| 823 |
+ $mlen, |
|
| 824 |
+ $nonce, |
|
| 825 |
+ ParagonIE_Sodium_Crypto::box_beforenm( |
|
| 826 |
+ ParagonIE_Sodium_Crypto::box_secretkey($boxKeypair), |
|
| 827 |
+ ParagonIE_Sodium_Crypto::box_publickey($boxKeypair) |
|
| 828 |
+ ) |
|
| 829 |
+ ); |
|
| 830 |
+ } |
|
| 831 |
+ |
|
| 832 |
+ /** |
|
| 833 |
+ * Encrypt a file |
|
| 834 |
+ * |
|
| 835 |
+ * @param resource $ifp |
|
| 836 |
+ * @param resource $ofp |
|
| 837 |
+ * @param int $mlen |
|
| 838 |
+ * @param string $nonce |
|
| 839 |
+ * @param string $key |
|
| 840 |
+ * @return bool |
|
| 841 |
+ * @throws SodiumException |
|
| 842 |
+ * @throws TypeError |
|
| 843 |
+ */ |
|
| 844 |
+ protected static function secretbox_encrypt($ifp, $ofp, $mlen, $nonce, $key) |
|
| 845 |
+ {
|
|
| 846 |
+ if (PHP_INT_SIZE === 4) {
|
|
| 847 |
+ return self::secretbox_encrypt_core32($ifp, $ofp, $mlen, $nonce, $key); |
|
| 848 |
+ } |
|
| 849 |
+ |
|
| 850 |
+ $plaintext = fread($ifp, 32); |
|
| 851 |
+ if (!is_string($plaintext)) {
|
|
| 852 |
+ throw new SodiumException('Could not read input file');
|
|
| 853 |
+ } |
|
| 854 |
+ $first32 = self::ftell($ifp); |
|
| 855 |
+ |
|
| 856 |
+ /** @var string $subkey */ |
|
| 857 |
+ $subkey = ParagonIE_Sodium_Core_HSalsa20::hsalsa20($nonce, $key); |
|
| 858 |
+ |
|
| 859 |
+ /** @var string $realNonce */ |
|
| 860 |
+ $realNonce = ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8); |
|
| 861 |
+ |
|
| 862 |
+ /** @var string $block0 */ |
|
| 863 |
+ $block0 = str_repeat("\x00", 32);
|
|
| 864 |
+ |
|
| 865 |
+ /** @var int $mlen - Length of the plaintext message */ |
|
| 866 |
+ $mlen0 = $mlen; |
|
| 867 |
+ if ($mlen0 > 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES) {
|
|
| 868 |
+ $mlen0 = 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES; |
|
| 869 |
+ } |
|
| 870 |
+ $block0 .= ParagonIE_Sodium_Core_Util::substr($plaintext, 0, $mlen0); |
|
| 871 |
+ |
|
| 872 |
+ /** @var string $block0 */ |
|
| 873 |
+ $block0 = ParagonIE_Sodium_Core_Salsa20::salsa20_xor( |
|
| 874 |
+ $block0, |
|
| 875 |
+ $realNonce, |
|
| 876 |
+ $subkey |
|
| 877 |
+ ); |
|
| 878 |
+ |
|
| 879 |
+ $state = new ParagonIE_Sodium_Core_Poly1305_State( |
|
| 880 |
+ ParagonIE_Sodium_Core_Util::substr( |
|
| 881 |
+ $block0, |
|
| 882 |
+ 0, |
|
| 883 |
+ ParagonIE_Sodium_Crypto::onetimeauth_poly1305_KEYBYTES |
|
| 884 |
+ ) |
|
| 885 |
+ ); |
|
| 886 |
+ |
|
| 887 |
+ // Pre-write 16 blank bytes for the Poly1305 tag |
|
| 888 |
+ $start = self::ftell($ofp); |
|
| 889 |
+ fwrite($ofp, str_repeat("\x00", 16));
|
|
| 890 |
+ |
|
| 891 |
+ /** @var string $c */ |
|
| 892 |
+ $cBlock = ParagonIE_Sodium_Core_Util::substr( |
|
| 893 |
+ $block0, |
|
| 894 |
+ ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES |
|
| 895 |
+ ); |
|
| 896 |
+ $state->update($cBlock); |
|
| 897 |
+ fwrite($ofp, $cBlock); |
|
| 898 |
+ $mlen -= 32; |
|
| 899 |
+ |
|
| 900 |
+ /** @var int $iter */ |
|
| 901 |
+ $iter = 1; |
|
| 902 |
+ |
|
| 903 |
+ /** @var int $incr */ |
|
| 904 |
+ $incr = self::BUFFER_SIZE >> 6; |
|
| 905 |
+ |
|
| 906 |
+ /* |
|
| 907 |
+ * Set the cursor to the end of the first half-block. All future bytes will |
|
| 908 |
+ * generated from salsa20_xor_ic, starting from 1 (second block). |
|
| 909 |
+ */ |
|
| 910 |
+ fseek($ifp, $first32, SEEK_SET); |
|
| 911 |
+ |
|
| 912 |
+ while ($mlen > 0) {
|
|
| 913 |
+ $blockSize = $mlen > self::BUFFER_SIZE |
|
| 914 |
+ ? self::BUFFER_SIZE |
|
| 915 |
+ : $mlen; |
|
| 916 |
+ $plaintext = fread($ifp, $blockSize); |
|
| 917 |
+ if (!is_string($plaintext)) {
|
|
| 918 |
+ throw new SodiumException('Could not read input file');
|
|
| 919 |
+ } |
|
| 920 |
+ $cBlock = ParagonIE_Sodium_Core_Salsa20::salsa20_xor_ic( |
|
| 921 |
+ $plaintext, |
|
| 922 |
+ $realNonce, |
|
| 923 |
+ $iter, |
|
| 924 |
+ $subkey |
|
| 925 |
+ ); |
|
| 926 |
+ fwrite($ofp, $cBlock, $blockSize); |
|
| 927 |
+ $state->update($cBlock); |
|
| 928 |
+ |
|
| 929 |
+ $mlen -= $blockSize; |
|
| 930 |
+ $iter += $incr; |
|
| 931 |
+ } |
|
| 932 |
+ try {
|
|
| 933 |
+ ParagonIE_Sodium_Compat::memzero($block0); |
|
| 934 |
+ ParagonIE_Sodium_Compat::memzero($subkey); |
|
| 935 |
+ } catch (SodiumException $ex) {
|
|
| 936 |
+ $block0 = null; |
|
| 937 |
+ $subkey = null; |
|
| 938 |
+ } |
|
| 939 |
+ $end = self::ftell($ofp); |
|
| 940 |
+ |
|
| 941 |
+ /* |
|
| 942 |
+ * Write the Poly1305 authentication tag that provides integrity |
|
| 943 |
+ * over the ciphertext (encrypt-then-MAC) |
|
| 944 |
+ */ |
|
| 945 |
+ fseek($ofp, $start, SEEK_SET); |
|
| 946 |
+ fwrite($ofp, $state->finish(), ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_MACBYTES); |
|
| 947 |
+ fseek($ofp, $end, SEEK_SET); |
|
| 948 |
+ unset($state); |
|
| 949 |
+ |
|
| 950 |
+ return true; |
|
| 951 |
+ } |
|
| 952 |
+ |
|
| 953 |
+ /** |
|
| 954 |
+ * Decrypt a file |
|
| 955 |
+ * |
|
| 956 |
+ * @param resource $ifp |
|
| 957 |
+ * @param resource $ofp |
|
| 958 |
+ * @param int $mlen |
|
| 959 |
+ * @param string $nonce |
|
| 960 |
+ * @param string $key |
|
| 961 |
+ * @return bool |
|
| 962 |
+ * @throws SodiumException |
|
| 963 |
+ * @throws TypeError |
|
| 964 |
+ */ |
|
| 965 |
+ protected static function secretbox_decrypt($ifp, $ofp, $mlen, $nonce, $key) |
|
| 966 |
+ {
|
|
| 967 |
+ if (PHP_INT_SIZE === 4) {
|
|
| 968 |
+ return self::secretbox_decrypt_core32($ifp, $ofp, $mlen, $nonce, $key); |
|
| 969 |
+ } |
|
| 970 |
+ $tag = fread($ifp, 16); |
|
| 971 |
+ if (!is_string($tag)) {
|
|
| 972 |
+ throw new SodiumException('Could not read input file');
|
|
| 973 |
+ } |
|
| 974 |
+ |
|
| 975 |
+ /** @var string $subkey */ |
|
| 976 |
+ $subkey = ParagonIE_Sodium_Core_HSalsa20::hsalsa20($nonce, $key); |
|
| 977 |
+ |
|
| 978 |
+ /** @var string $realNonce */ |
|
| 979 |
+ $realNonce = ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8); |
|
| 980 |
+ |
|
| 981 |
+ /** @var string $block0 */ |
|
| 982 |
+ $block0 = ParagonIE_Sodium_Core_Salsa20::salsa20( |
|
| 983 |
+ 64, |
|
| 984 |
+ ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8), |
|
| 985 |
+ $subkey |
|
| 986 |
+ ); |
|
| 987 |
+ |
|
| 988 |
+ /* Verify the Poly1305 MAC -before- attempting to decrypt! */ |
|
| 989 |
+ $state = new ParagonIE_Sodium_Core_Poly1305_State(self::substr($block0, 0, 32)); |
|
| 990 |
+ if (!self::onetimeauth_verify($state, $ifp, $tag, $mlen)) {
|
|
| 991 |
+ throw new SodiumException('Invalid MAC');
|
|
| 992 |
+ } |
|
| 993 |
+ |
|
| 994 |
+ /* |
|
| 995 |
+ * Set the cursor to the end of the first half-block. All future bytes will |
|
| 996 |
+ * generated from salsa20_xor_ic, starting from 1 (second block). |
|
| 997 |
+ */ |
|
| 998 |
+ $first32 = fread($ifp, 32); |
|
| 999 |
+ if (!is_string($first32)) {
|
|
| 1000 |
+ throw new SodiumException('Could not read input file');
|
|
| 1001 |
+ } |
|
| 1002 |
+ $first32len = self::strlen($first32); |
|
| 1003 |
+ fwrite( |
|
| 1004 |
+ $ofp, |
|
| 1005 |
+ self::xorStrings( |
|
| 1006 |
+ self::substr($block0, 32, $first32len), |
|
| 1007 |
+ self::substr($first32, 0, $first32len) |
|
| 1008 |
+ ) |
|
| 1009 |
+ ); |
|
| 1010 |
+ $mlen -= 32; |
|
| 1011 |
+ |
|
| 1012 |
+ /** @var int $iter */ |
|
| 1013 |
+ $iter = 1; |
|
| 1014 |
+ |
|
| 1015 |
+ /** @var int $incr */ |
|
| 1016 |
+ $incr = self::BUFFER_SIZE >> 6; |
|
| 1017 |
+ |
|
| 1018 |
+ /* Decrypts ciphertext, writes to output file. */ |
|
| 1019 |
+ while ($mlen > 0) {
|
|
| 1020 |
+ $blockSize = $mlen > self::BUFFER_SIZE |
|
| 1021 |
+ ? self::BUFFER_SIZE |
|
| 1022 |
+ : $mlen; |
|
| 1023 |
+ $ciphertext = fread($ifp, $blockSize); |
|
| 1024 |
+ if (!is_string($ciphertext)) {
|
|
| 1025 |
+ throw new SodiumException('Could not read input file');
|
|
| 1026 |
+ } |
|
| 1027 |
+ $pBlock = ParagonIE_Sodium_Core_Salsa20::salsa20_xor_ic( |
|
| 1028 |
+ $ciphertext, |
|
| 1029 |
+ $realNonce, |
|
| 1030 |
+ $iter, |
|
| 1031 |
+ $subkey |
|
| 1032 |
+ ); |
|
| 1033 |
+ fwrite($ofp, $pBlock, $blockSize); |
|
| 1034 |
+ $mlen -= $blockSize; |
|
| 1035 |
+ $iter += $incr; |
|
| 1036 |
+ } |
|
| 1037 |
+ return true; |
|
| 1038 |
+ } |
|
| 1039 |
+ |
|
| 1040 |
+ /** |
|
| 1041 |
+ * @param ParagonIE_Sodium_Core_Poly1305_State $state |
|
| 1042 |
+ * @param resource $ifp |
|
| 1043 |
+ * @param string $tag |
|
| 1044 |
+ * @param int $mlen |
|
| 1045 |
+ * @return bool |
|
| 1046 |
+ * @throws SodiumException |
|
| 1047 |
+ * @throws TypeError |
|
| 1048 |
+ */ |
|
| 1049 |
+ protected static function onetimeauth_verify( |
|
| 1050 |
+ ParagonIE_Sodium_Core_Poly1305_State $state, |
|
| 1051 |
+ $ifp, |
|
| 1052 |
+ $tag = '', |
|
| 1053 |
+ $mlen = 0 |
|
| 1054 |
+ ) {
|
|
| 1055 |
+ /** @var int $pos */ |
|
| 1056 |
+ $pos = self::ftell($ifp); |
|
| 1057 |
+ |
|
| 1058 |
+ /** @var int $iter */ |
|
| 1059 |
+ $iter = 1; |
|
| 1060 |
+ |
|
| 1061 |
+ /** @var int $incr */ |
|
| 1062 |
+ $incr = self::BUFFER_SIZE >> 6; |
|
| 1063 |
+ |
|
| 1064 |
+ while ($mlen > 0) {
|
|
| 1065 |
+ $blockSize = $mlen > self::BUFFER_SIZE |
|
| 1066 |
+ ? self::BUFFER_SIZE |
|
| 1067 |
+ : $mlen; |
|
| 1068 |
+ $ciphertext = fread($ifp, $blockSize); |
|
| 1069 |
+ if (!is_string($ciphertext)) {
|
|
| 1070 |
+ throw new SodiumException('Could not read input file');
|
|
| 1071 |
+ } |
|
| 1072 |
+ $state->update($ciphertext); |
|
| 1073 |
+ $mlen -= $blockSize; |
|
| 1074 |
+ $iter += $incr; |
|
| 1075 |
+ } |
|
| 1076 |
+ $res = ParagonIE_Sodium_Core_Util::verify_16($tag, $state->finish()); |
|
| 1077 |
+ |
|
| 1078 |
+ fseek($ifp, $pos, SEEK_SET); |
|
| 1079 |
+ return $res; |
|
| 1080 |
+ } |
|
| 1081 |
+ |
|
| 1082 |
+ /** |
|
| 1083 |
+ * Update a hash context with the contents of a file, without |
|
| 1084 |
+ * loading the entire file into memory. |
|
| 1085 |
+ * |
|
| 1086 |
+ * @param resource|HashContext $hash |
|
| 1087 |
+ * @param resource $fp |
|
| 1088 |
+ * @param int $size |
|
| 1089 |
+ * @return resource|object Resource on PHP < 7.2, HashContext object on PHP >= 7.2 |
|
| 1090 |
+ * @throws SodiumException |
|
| 1091 |
+ * @throws TypeError |
|
| 1092 |
+ * @psalm-suppress PossiblyInvalidArgument |
|
| 1093 |
+ * PHP 7.2 changes from a resource to an object, |
|
| 1094 |
+ * which causes Psalm to complain about an error. |
|
| 1095 |
+ * @psalm-suppress TypeCoercion |
|
| 1096 |
+ * Ditto. |
|
| 1097 |
+ */ |
|
| 1098 |
+ public static function updateHashWithFile($hash, $fp, $size = 0) |
|
| 1099 |
+ {
|
|
| 1100 |
+ /* Type checks: */ |
|
| 1101 |
+ if (PHP_VERSION_ID < 70200) {
|
|
| 1102 |
+ if (!is_resource($hash)) {
|
|
| 1103 |
+ throw new TypeError('Argument 1 must be a resource, ' . gettype($hash) . ' given.');
|
|
| 1104 |
+ } |
|
| 1105 |
+ } else {
|
|
| 1106 |
+ if (!is_object($hash)) {
|
|
| 1107 |
+ throw new TypeError('Argument 1 must be an object (PHP 7.2+), ' . gettype($hash) . ' given.');
|
|
| 1108 |
+ } |
|
| 1109 |
+ } |
|
| 1110 |
+ |
|
| 1111 |
+ if (!is_resource($fp)) {
|
|
| 1112 |
+ throw new TypeError('Argument 2 must be a resource, ' . gettype($fp) . ' given.');
|
|
| 1113 |
+ } |
|
| 1114 |
+ if (!is_int($size)) {
|
|
| 1115 |
+ throw new TypeError('Argument 3 must be an integer, ' . gettype($size) . ' given.');
|
|
| 1116 |
+ } |
|
| 1117 |
+ |
|
| 1118 |
+ /** @var int $originalPosition */ |
|
| 1119 |
+ $originalPosition = self::ftell($fp); |
|
| 1120 |
+ |
|
| 1121 |
+ // Move file pointer to beginning of file |
|
| 1122 |
+ fseek($fp, 0, SEEK_SET); |
|
| 1123 |
+ for ($i = 0; $i < $size; $i += self::BUFFER_SIZE) {
|
|
| 1124 |
+ /** @var string|bool $message */ |
|
| 1125 |
+ $message = fread( |
|
| 1126 |
+ $fp, |
|
| 1127 |
+ ($size - $i) > self::BUFFER_SIZE |
|
| 1128 |
+ ? $size - $i |
|
| 1129 |
+ : self::BUFFER_SIZE |
|
| 1130 |
+ ); |
|
| 1131 |
+ if (!is_string($message)) {
|
|
| 1132 |
+ throw new SodiumException('Unexpected error reading from file.');
|
|
| 1133 |
+ } |
|
| 1134 |
+ /** @var string $message */ |
|
| 1135 |
+ /** @psalm-suppress InvalidArgument */ |
|
| 1136 |
+ self::hash_update($hash, $message); |
|
| 1137 |
+ } |
|
| 1138 |
+ // Reset file pointer's position |
|
| 1139 |
+ fseek($fp, $originalPosition, SEEK_SET); |
|
| 1140 |
+ return $hash; |
|
| 1141 |
+ } |
|
| 1142 |
+ |
|
| 1143 |
+ /** |
|
| 1144 |
+ * Sign a file (rather than a string). Uses less memory than |
|
| 1145 |
+ * ParagonIE_Sodium_Compat::crypto_sign_detached(), but produces |
|
| 1146 |
+ * the same result. (32-bit) |
|
| 1147 |
+ * |
|
| 1148 |
+ * @param string $filePath Absolute path to a file on the filesystem |
|
| 1149 |
+ * @param string $secretKey Secret signing key |
|
| 1150 |
+ * |
|
| 1151 |
+ * @return string Ed25519 signature |
|
| 1152 |
+ * @throws SodiumException |
|
| 1153 |
+ * @throws TypeError |
|
| 1154 |
+ */ |
|
| 1155 |
+ private static function sign_core32($filePath, $secretKey) |
|
| 1156 |
+ {
|
|
| 1157 |
+ $size = filesize($filePath); |
|
| 1158 |
+ if (!is_int($size)) {
|
|
| 1159 |
+ throw new SodiumException('Could not obtain the file size');
|
|
| 1160 |
+ } |
|
| 1161 |
+ |
|
| 1162 |
+ $fp = fopen($filePath, 'rb'); |
|
| 1163 |
+ if (!is_resource($fp)) {
|
|
| 1164 |
+ throw new SodiumException('Could not open input file for reading');
|
|
| 1165 |
+ } |
|
| 1166 |
+ |
|
| 1167 |
+ /** @var string $az */ |
|
| 1168 |
+ $az = hash('sha512', self::substr($secretKey, 0, 32), true);
|
|
| 1169 |
+ |
|
| 1170 |
+ $az[0] = self::intToChr(self::chrToInt($az[0]) & 248); |
|
| 1171 |
+ $az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64); |
|
| 1172 |
+ |
|
| 1173 |
+ $hs = hash_init('sha512');
|
|
| 1174 |
+ self::hash_update($hs, self::substr($az, 32, 32)); |
|
| 1175 |
+ /** @var resource $hs */ |
|
| 1176 |
+ $hs = self::updateHashWithFile($hs, $fp, $size); |
|
| 1177 |
+ |
|
| 1178 |
+ $nonceHash = hash_final($hs, true); |
|
| 1179 |
+ $pk = self::substr($secretKey, 32, 32); |
|
| 1180 |
+ $nonce = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($nonceHash) . self::substr($nonceHash, 32); |
|
| 1181 |
+ $sig = ParagonIE_Sodium_Core32_Ed25519::ge_p3_tobytes( |
|
| 1182 |
+ ParagonIE_Sodium_Core32_Ed25519::ge_scalarmult_base($nonce) |
|
| 1183 |
+ ); |
|
| 1184 |
+ |
|
| 1185 |
+ $hs = hash_init('sha512');
|
|
| 1186 |
+ self::hash_update($hs, self::substr($sig, 0, 32)); |
|
| 1187 |
+ self::hash_update($hs, self::substr($pk, 0, 32)); |
|
| 1188 |
+ /** @var resource $hs */ |
|
| 1189 |
+ $hs = self::updateHashWithFile($hs, $fp, $size); |
|
| 1190 |
+ |
|
| 1191 |
+ $hramHash = hash_final($hs, true); |
|
| 1192 |
+ |
|
| 1193 |
+ $hram = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($hramHash); |
|
| 1194 |
+ |
|
| 1195 |
+ $sigAfter = ParagonIE_Sodium_Core32_Ed25519::sc_muladd($hram, $az, $nonce); |
|
| 1196 |
+ |
|
| 1197 |
+ /** @var string $sig */ |
|
| 1198 |
+ $sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32); |
|
| 1199 |
+ |
|
| 1200 |
+ try {
|
|
| 1201 |
+ ParagonIE_Sodium_Compat::memzero($az); |
|
| 1202 |
+ } catch (SodiumException $ex) {
|
|
| 1203 |
+ $az = null; |
|
| 1204 |
+ } |
|
| 1205 |
+ fclose($fp); |
|
| 1206 |
+ return $sig; |
|
| 1207 |
+ } |
|
| 1208 |
+ |
|
| 1209 |
+ /** |
|
| 1210 |
+ * |
|
| 1211 |
+ * Verify a file (rather than a string). Uses less memory than |
|
| 1212 |
+ * ParagonIE_Sodium_Compat::crypto_sign_verify_detached(), but |
|
| 1213 |
+ * produces the same result. (32-bit) |
|
| 1214 |
+ * |
|
| 1215 |
+ * @param string $sig Ed25519 signature |
|
| 1216 |
+ * @param string $filePath Absolute path to a file on the filesystem |
|
| 1217 |
+ * @param string $publicKey Signing public key |
|
| 1218 |
+ * |
|
| 1219 |
+ * @return bool |
|
| 1220 |
+ * @throws SodiumException |
|
| 1221 |
+ * @throws Exception |
|
| 1222 |
+ */ |
|
| 1223 |
+ public static function verify_core32($sig, $filePath, $publicKey) |
|
| 1224 |
+ {
|
|
| 1225 |
+ /* Security checks */ |
|
| 1226 |
+ if (ParagonIE_Sodium_Core32_Ed25519::check_S_lt_L(self::substr($sig, 32, 32))) {
|
|
| 1227 |
+ throw new SodiumException('S < L - Invalid signature');
|
|
| 1228 |
+ } |
|
| 1229 |
+ if (ParagonIE_Sodium_Core32_Ed25519::small_order($sig)) {
|
|
| 1230 |
+ throw new SodiumException('Signature is on too small of an order');
|
|
| 1231 |
+ } |
|
| 1232 |
+ |
|
| 1233 |
+ if ((self::chrToInt($sig[63]) & 224) !== 0) {
|
|
| 1234 |
+ throw new SodiumException('Invalid signature');
|
|
| 1235 |
+ } |
|
| 1236 |
+ $d = 0; |
|
| 1237 |
+ for ($i = 0; $i < 32; ++$i) {
|
|
| 1238 |
+ $d |= self::chrToInt($publicKey[$i]); |
|
| 1239 |
+ } |
|
| 1240 |
+ if ($d === 0) {
|
|
| 1241 |
+ throw new SodiumException('All zero public key');
|
|
| 1242 |
+ } |
|
| 1243 |
+ |
|
| 1244 |
+ /** @var int|bool $size */ |
|
| 1245 |
+ $size = filesize($filePath); |
|
| 1246 |
+ if (!is_int($size)) {
|
|
| 1247 |
+ throw new SodiumException('Could not obtain the file size');
|
|
| 1248 |
+ } |
|
| 1249 |
+ /** @var int $size */ |
|
| 1250 |
+ |
|
| 1251 |
+ /** @var resource|bool $fp */ |
|
| 1252 |
+ $fp = fopen($filePath, 'rb'); |
|
| 1253 |
+ if (!is_resource($fp)) {
|
|
| 1254 |
+ throw new SodiumException('Could not open input file for reading');
|
|
| 1255 |
+ } |
|
| 1256 |
+ /** @var resource $fp */ |
|
| 1257 |
+ |
|
| 1258 |
+ /** @var bool The original value of ParagonIE_Sodium_Compat::$fastMult */ |
|
| 1259 |
+ $orig = ParagonIE_Sodium_Compat::$fastMult; |
|
| 1260 |
+ |
|
| 1261 |
+ // Set ParagonIE_Sodium_Compat::$fastMult to true to speed up verification. |
|
| 1262 |
+ ParagonIE_Sodium_Compat::$fastMult = true; |
|
| 1263 |
+ |
|
| 1264 |
+ /** @var ParagonIE_Sodium_Core32_Curve25519_Ge_P3 $A */ |
|
| 1265 |
+ $A = ParagonIE_Sodium_Core32_Ed25519::ge_frombytes_negate_vartime($publicKey); |
|
| 1266 |
+ |
|
| 1267 |
+ $hs = hash_init('sha512');
|
|
| 1268 |
+ self::hash_update($hs, self::substr($sig, 0, 32)); |
|
| 1269 |
+ self::hash_update($hs, self::substr($publicKey, 0, 32)); |
|
| 1270 |
+ /** @var resource $hs */ |
|
| 1271 |
+ $hs = self::updateHashWithFile($hs, $fp, $size); |
|
| 1272 |
+ /** @var string $hDigest */ |
|
| 1273 |
+ $hDigest = hash_final($hs, true); |
|
| 1274 |
+ |
|
| 1275 |
+ /** @var string $h */ |
|
| 1276 |
+ $h = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($hDigest) . self::substr($hDigest, 32); |
|
| 1277 |
+ |
|
| 1278 |
+ /** @var ParagonIE_Sodium_Core32_Curve25519_Ge_P2 $R */ |
|
| 1279 |
+ $R = ParagonIE_Sodium_Core32_Ed25519::ge_double_scalarmult_vartime( |
|
| 1280 |
+ $h, |
|
| 1281 |
+ $A, |
|
| 1282 |
+ self::substr($sig, 32) |
|
| 1283 |
+ ); |
|
| 1284 |
+ |
|
| 1285 |
+ /** @var string $rcheck */ |
|
| 1286 |
+ $rcheck = ParagonIE_Sodium_Core32_Ed25519::ge_tobytes($R); |
|
| 1287 |
+ |
|
| 1288 |
+ // Close the file handle |
|
| 1289 |
+ fclose($fp); |
|
| 1290 |
+ |
|
| 1291 |
+ // Reset ParagonIE_Sodium_Compat::$fastMult to what it was before. |
|
| 1292 |
+ ParagonIE_Sodium_Compat::$fastMult = $orig; |
|
| 1293 |
+ return self::verify_32($rcheck, self::substr($sig, 0, 32)); |
|
| 1294 |
+ } |
|
| 1295 |
+ |
|
| 1296 |
+ /** |
|
| 1297 |
+ * Encrypt a file (32-bit) |
|
| 1298 |
+ * |
|
| 1299 |
+ * @param resource $ifp |
|
| 1300 |
+ * @param resource $ofp |
|
| 1301 |
+ * @param int $mlen |
|
| 1302 |
+ * @param string $nonce |
|
| 1303 |
+ * @param string $key |
|
| 1304 |
+ * @return bool |
|
| 1305 |
+ * @throws SodiumException |
|
| 1306 |
+ * @throws TypeError |
|
| 1307 |
+ */ |
|
| 1308 |
+ protected static function secretbox_encrypt_core32($ifp, $ofp, $mlen, $nonce, $key) |
|
| 1309 |
+ {
|
|
| 1310 |
+ $plaintext = fread($ifp, 32); |
|
| 1311 |
+ if (!is_string($plaintext)) {
|
|
| 1312 |
+ throw new SodiumException('Could not read input file');
|
|
| 1313 |
+ } |
|
| 1314 |
+ $first32 = self::ftell($ifp); |
|
| 1315 |
+ |
|
| 1316 |
+ /** @var string $subkey */ |
|
| 1317 |
+ $subkey = ParagonIE_Sodium_Core32_HSalsa20::hsalsa20($nonce, $key); |
|
| 1318 |
+ |
|
| 1319 |
+ /** @var string $realNonce */ |
|
| 1320 |
+ $realNonce = ParagonIE_Sodium_Core32_Util::substr($nonce, 16, 8); |
|
| 1321 |
+ |
|
| 1322 |
+ /** @var string $block0 */ |
|
| 1323 |
+ $block0 = str_repeat("\x00", 32);
|
|
| 1324 |
+ |
|
| 1325 |
+ /** @var int $mlen - Length of the plaintext message */ |
|
| 1326 |
+ $mlen0 = $mlen; |
|
| 1327 |
+ if ($mlen0 > 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES) {
|
|
| 1328 |
+ $mlen0 = 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES; |
|
| 1329 |
+ } |
|
| 1330 |
+ $block0 .= ParagonIE_Sodium_Core32_Util::substr($plaintext, 0, $mlen0); |
|
| 1331 |
+ |
|
| 1332 |
+ /** @var string $block0 */ |
|
| 1333 |
+ $block0 = ParagonIE_Sodium_Core32_Salsa20::salsa20_xor( |
|
| 1334 |
+ $block0, |
|
| 1335 |
+ $realNonce, |
|
| 1336 |
+ $subkey |
|
| 1337 |
+ ); |
|
| 1338 |
+ |
|
| 1339 |
+ $state = new ParagonIE_Sodium_Core32_Poly1305_State( |
|
| 1340 |
+ ParagonIE_Sodium_Core32_Util::substr( |
|
| 1341 |
+ $block0, |
|
| 1342 |
+ 0, |
|
| 1343 |
+ ParagonIE_Sodium_Crypto::onetimeauth_poly1305_KEYBYTES |
|
| 1344 |
+ ) |
|
| 1345 |
+ ); |
|
| 1346 |
+ |
|
| 1347 |
+ // Pre-write 16 blank bytes for the Poly1305 tag |
|
| 1348 |
+ $start = self::ftell($ofp); |
|
| 1349 |
+ fwrite($ofp, str_repeat("\x00", 16));
|
|
| 1350 |
+ |
|
| 1351 |
+ /** @var string $c */ |
|
| 1352 |
+ $cBlock = ParagonIE_Sodium_Core32_Util::substr( |
|
| 1353 |
+ $block0, |
|
| 1354 |
+ ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES |
|
| 1355 |
+ ); |
|
| 1356 |
+ $state->update($cBlock); |
|
| 1357 |
+ fwrite($ofp, $cBlock); |
|
| 1358 |
+ $mlen -= 32; |
|
| 1359 |
+ |
|
| 1360 |
+ /** @var int $iter */ |
|
| 1361 |
+ $iter = 1; |
|
| 1362 |
+ |
|
| 1363 |
+ /** @var int $incr */ |
|
| 1364 |
+ $incr = self::BUFFER_SIZE >> 6; |
|
| 1365 |
+ |
|
| 1366 |
+ /* |
|
| 1367 |
+ * Set the cursor to the end of the first half-block. All future bytes will |
|
| 1368 |
+ * generated from salsa20_xor_ic, starting from 1 (second block). |
|
| 1369 |
+ */ |
|
| 1370 |
+ fseek($ifp, $first32, SEEK_SET); |
|
| 1371 |
+ |
|
| 1372 |
+ while ($mlen > 0) {
|
|
| 1373 |
+ $blockSize = $mlen > self::BUFFER_SIZE |
|
| 1374 |
+ ? self::BUFFER_SIZE |
|
| 1375 |
+ : $mlen; |
|
| 1376 |
+ $plaintext = fread($ifp, $blockSize); |
|
| 1377 |
+ if (!is_string($plaintext)) {
|
|
| 1378 |
+ throw new SodiumException('Could not read input file');
|
|
| 1379 |
+ } |
|
| 1380 |
+ $cBlock = ParagonIE_Sodium_Core32_Salsa20::salsa20_xor_ic( |
|
| 1381 |
+ $plaintext, |
|
| 1382 |
+ $realNonce, |
|
| 1383 |
+ $iter, |
|
| 1384 |
+ $subkey |
|
| 1385 |
+ ); |
|
| 1386 |
+ fwrite($ofp, $cBlock, $blockSize); |
|
| 1387 |
+ $state->update($cBlock); |
|
| 1388 |
+ |
|
| 1389 |
+ $mlen -= $blockSize; |
|
| 1390 |
+ $iter += $incr; |
|
| 1391 |
+ } |
|
| 1392 |
+ try {
|
|
| 1393 |
+ ParagonIE_Sodium_Compat::memzero($block0); |
|
| 1394 |
+ ParagonIE_Sodium_Compat::memzero($subkey); |
|
| 1395 |
+ } catch (SodiumException $ex) {
|
|
| 1396 |
+ $block0 = null; |
|
| 1397 |
+ $subkey = null; |
|
| 1398 |
+ } |
|
| 1399 |
+ $end = self::ftell($ofp); |
|
| 1400 |
+ |
|
| 1401 |
+ /* |
|
| 1402 |
+ * Write the Poly1305 authentication tag that provides integrity |
|
| 1403 |
+ * over the ciphertext (encrypt-then-MAC) |
|
| 1404 |
+ */ |
|
| 1405 |
+ fseek($ofp, $start, SEEK_SET); |
|
| 1406 |
+ fwrite($ofp, $state->finish(), ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_MACBYTES); |
|
| 1407 |
+ fseek($ofp, $end, SEEK_SET); |
|
| 1408 |
+ unset($state); |
|
| 1409 |
+ |
|
| 1410 |
+ return true; |
|
| 1411 |
+ } |
|
| 1412 |
+ |
|
| 1413 |
+ /** |
|
| 1414 |
+ * Decrypt a file (32-bit) |
|
| 1415 |
+ * |
|
| 1416 |
+ * @param resource $ifp |
|
| 1417 |
+ * @param resource $ofp |
|
| 1418 |
+ * @param int $mlen |
|
| 1419 |
+ * @param string $nonce |
|
| 1420 |
+ * @param string $key |
|
| 1421 |
+ * @return bool |
|
| 1422 |
+ * @throws SodiumException |
|
| 1423 |
+ * @throws TypeError |
|
| 1424 |
+ */ |
|
| 1425 |
+ protected static function secretbox_decrypt_core32($ifp, $ofp, $mlen, $nonce, $key) |
|
| 1426 |
+ {
|
|
| 1427 |
+ $tag = fread($ifp, 16); |
|
| 1428 |
+ if (!is_string($tag)) {
|
|
| 1429 |
+ throw new SodiumException('Could not read input file');
|
|
| 1430 |
+ } |
|
| 1431 |
+ |
|
| 1432 |
+ /** @var string $subkey */ |
|
| 1433 |
+ $subkey = ParagonIE_Sodium_Core32_HSalsa20::hsalsa20($nonce, $key); |
|
| 1434 |
+ |
|
| 1435 |
+ /** @var string $realNonce */ |
|
| 1436 |
+ $realNonce = ParagonIE_Sodium_Core32_Util::substr($nonce, 16, 8); |
|
| 1437 |
+ |
|
| 1438 |
+ /** @var string $block0 */ |
|
| 1439 |
+ $block0 = ParagonIE_Sodium_Core32_Salsa20::salsa20( |
|
| 1440 |
+ 64, |
|
| 1441 |
+ ParagonIE_Sodium_Core32_Util::substr($nonce, 16, 8), |
|
| 1442 |
+ $subkey |
|
| 1443 |
+ ); |
|
| 1444 |
+ |
|
| 1445 |
+ /* Verify the Poly1305 MAC -before- attempting to decrypt! */ |
|
| 1446 |
+ $state = new ParagonIE_Sodium_Core32_Poly1305_State(self::substr($block0, 0, 32)); |
|
| 1447 |
+ if (!self::onetimeauth_verify_core32($state, $ifp, $tag, $mlen)) {
|
|
| 1448 |
+ throw new SodiumException('Invalid MAC');
|
|
| 1449 |
+ } |
|
| 1450 |
+ |
|
| 1451 |
+ /* |
|
| 1452 |
+ * Set the cursor to the end of the first half-block. All future bytes will |
|
| 1453 |
+ * generated from salsa20_xor_ic, starting from 1 (second block). |
|
| 1454 |
+ */ |
|
| 1455 |
+ $first32 = fread($ifp, 32); |
|
| 1456 |
+ if (!is_string($first32)) {
|
|
| 1457 |
+ throw new SodiumException('Could not read input file');
|
|
| 1458 |
+ } |
|
| 1459 |
+ $first32len = self::strlen($first32); |
|
| 1460 |
+ fwrite( |
|
| 1461 |
+ $ofp, |
|
| 1462 |
+ self::xorStrings( |
|
| 1463 |
+ self::substr($block0, 32, $first32len), |
|
| 1464 |
+ self::substr($first32, 0, $first32len) |
|
| 1465 |
+ ) |
|
| 1466 |
+ ); |
|
| 1467 |
+ $mlen -= 32; |
|
| 1468 |
+ |
|
| 1469 |
+ /** @var int $iter */ |
|
| 1470 |
+ $iter = 1; |
|
| 1471 |
+ |
|
| 1472 |
+ /** @var int $incr */ |
|
| 1473 |
+ $incr = self::BUFFER_SIZE >> 6; |
|
| 1474 |
+ |
|
| 1475 |
+ /* Decrypts ciphertext, writes to output file. */ |
|
| 1476 |
+ while ($mlen > 0) {
|
|
| 1477 |
+ $blockSize = $mlen > self::BUFFER_SIZE |
|
| 1478 |
+ ? self::BUFFER_SIZE |
|
| 1479 |
+ : $mlen; |
|
| 1480 |
+ $ciphertext = fread($ifp, $blockSize); |
|
| 1481 |
+ if (!is_string($ciphertext)) {
|
|
| 1482 |
+ throw new SodiumException('Could not read input file');
|
|
| 1483 |
+ } |
|
| 1484 |
+ $pBlock = ParagonIE_Sodium_Core32_Salsa20::salsa20_xor_ic( |
|
| 1485 |
+ $ciphertext, |
|
| 1486 |
+ $realNonce, |
|
| 1487 |
+ $iter, |
|
| 1488 |
+ $subkey |
|
| 1489 |
+ ); |
|
| 1490 |
+ fwrite($ofp, $pBlock, $blockSize); |
|
| 1491 |
+ $mlen -= $blockSize; |
|
| 1492 |
+ $iter += $incr; |
|
| 1493 |
+ } |
|
| 1494 |
+ return true; |
|
| 1495 |
+ } |
|
| 1496 |
+ |
|
| 1497 |
+ /** |
|
| 1498 |
+ * One-time message authentication for 32-bit systems |
|
| 1499 |
+ * |
|
| 1500 |
+ * @param ParagonIE_Sodium_Core32_Poly1305_State $state |
|
| 1501 |
+ * @param resource $ifp |
|
| 1502 |
+ * @param string $tag |
|
| 1503 |
+ * @param int $mlen |
|
| 1504 |
+ * @return bool |
|
| 1505 |
+ * @throws SodiumException |
|
| 1506 |
+ * @throws TypeError |
|
| 1507 |
+ */ |
|
| 1508 |
+ protected static function onetimeauth_verify_core32( |
|
| 1509 |
+ ParagonIE_Sodium_Core32_Poly1305_State $state, |
|
| 1510 |
+ $ifp, |
|
| 1511 |
+ $tag = '', |
|
| 1512 |
+ $mlen = 0 |
|
| 1513 |
+ ) {
|
|
| 1514 |
+ /** @var int $pos */ |
|
| 1515 |
+ $pos = self::ftell($ifp); |
|
| 1516 |
+ |
|
| 1517 |
+ while ($mlen > 0) {
|
|
| 1518 |
+ $blockSize = $mlen > self::BUFFER_SIZE |
|
| 1519 |
+ ? self::BUFFER_SIZE |
|
| 1520 |
+ : $mlen; |
|
| 1521 |
+ $ciphertext = fread($ifp, $blockSize); |
|
| 1522 |
+ if (!is_string($ciphertext)) {
|
|
| 1523 |
+ throw new SodiumException('Could not read input file');
|
|
| 1524 |
+ } |
|
| 1525 |
+ $state->update($ciphertext); |
|
| 1526 |
+ $mlen -= $blockSize; |
|
| 1527 |
+ } |
|
| 1528 |
+ $res = ParagonIE_Sodium_Core32_Util::verify_16($tag, $state->finish()); |
|
| 1529 |
+ |
|
| 1530 |
+ fseek($ifp, $pos, SEEK_SET); |
|
| 1531 |
+ return $res; |
|
| 1532 |
+ } |
|
| 1533 |
+ |
|
| 1534 |
+ /** |
|
| 1535 |
+ * @param resource $resource |
|
| 1536 |
+ * @return int |
|
| 1537 |
+ * @throws SodiumException |
|
| 1538 |
+ */ |
|
| 1539 |
+ private static function ftell($resource) |
|
| 1540 |
+ {
|
|
| 1541 |
+ $return = ftell($resource); |
|
| 1542 |
+ if (!is_int($return)) {
|
|
| 1543 |
+ throw new SodiumException('ftell() returned false');
|
|
| 1544 |
+ } |
|
| 1545 |
+ return (int) $return; |
|
| 1546 |
+ } |
|
| 1547 |
+} |