ParagonIE_Sodium_File::sign() public WP 1.0
Sign a file (rather than a string). Uses less memory than ParagonIE_Sodium_Compat::crypto_sign_detached(), but produces the same result.
{} Это метод класса: ParagonIE_Sodium_File{}
Хуков нет.
Возвращает
Строку
. Ed25519 signature
Использование
$result = ParagonIE_Sodium_File::sign( $filePath, $secretKey );
- $filePath(строка) (обязательный)
- Absolute path to a file on the filesystem
- $secretKey(строка) (обязательный)
- Secret signing key
Код ParagonIE_Sodium_File::sign() ParagonIE Sodium File::sign WP 5.7
public static function sign($filePath, $secretKey)
{
/* Type checks: */
if (!is_string($filePath)) {
throw new TypeError('Argument 1 must be a string, ' . gettype($filePath) . ' given.');
}
if (!is_string($secretKey)) {
throw new TypeError('Argument 2 must be a string, ' . gettype($secretKey) . ' given.');
}
/* Input validation: */
if (self::strlen($secretKey) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_SECRETKEYBYTES) {
throw new TypeError('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES bytes');
}
if (PHP_INT_SIZE === 4) {
return self::sign_core32($filePath, $secretKey);
}
/** @var int $size */
$size = filesize($filePath);
if (!is_int($size)) {
throw new SodiumException('Could not obtain the file size');
}
/** @var resource $fp */
$fp = fopen($filePath, 'rb');
if (!is_resource($fp)) {
throw new SodiumException('Could not open input file for reading');
}
/** @var string $az */
$az = hash('sha512', self::substr($secretKey, 0, 32), true);
$az[0] = self::intToChr(self::chrToInt($az[0]) & 248);
$az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64);
$hs = hash_init('sha512');
hash_update($hs, self::substr($az, 32, 32));
/** @var resource $hs */
$hs = self::updateHashWithFile($hs, $fp, $size);
/** @var string $nonceHash */
$nonceHash = hash_final($hs, true);
/** @var string $pk */
$pk = self::substr($secretKey, 32, 32);
/** @var string $nonce */
$nonce = ParagonIE_Sodium_Core_Ed25519::sc_reduce($nonceHash) . self::substr($nonceHash, 32);
/** @var string $sig */
$sig = ParagonIE_Sodium_Core_Ed25519::ge_p3_tobytes(
ParagonIE_Sodium_Core_Ed25519::ge_scalarmult_base($nonce)
);
$hs = hash_init('sha512');
hash_update($hs, self::substr($sig, 0, 32));
hash_update($hs, self::substr($pk, 0, 32));
/** @var resource $hs */
$hs = self::updateHashWithFile($hs, $fp, $size);
/** @var string $hramHash */
$hramHash = hash_final($hs, true);
/** @var string $hram */
$hram = ParagonIE_Sodium_Core_Ed25519::sc_reduce($hramHash);
/** @var string $sigAfter */
$sigAfter = ParagonIE_Sodium_Core_Ed25519::sc_muladd($hram, $az, $nonce);
/** @var string $sig */
$sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32);
try {
ParagonIE_Sodium_Compat::memzero($az);
} catch (SodiumException $ex) {
$az = null;
}
fclose($fp);
return $sig;
}