ParagonIE_Sodium_File::sign_core32()
Sign a file (rather than a string). Uses less memory than ParagonIE_Sodium_Compat::crypto_sign_detached(), but produces the same result. (32-bit)
{} Это метод класса: ParagonIE_Sodium_File{}
Хуков нет.
Возвращает
Строку
. Ed25519 signature
Использование
$result = ParagonIE_Sodium_File::sign_core32( $filePath, $secretKey );
- $filePath(строка) (обязательный)
- Absolute path to a file on the filesystem
- $secretKey(строка) (обязательный)
- Secret signing key
Код ParagonIE_Sodium_File::sign_core32() ParagonIE Sodium File::sign core32 WP 6.0
private static function sign_core32($filePath, $secretKey) { $size = filesize($filePath); if (!is_int($size)) { throw new SodiumException('Could not obtain the file size'); } $fp = fopen($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); $hs = hash_init('sha512'); self::hash_update($hs, self::substr($az, 32, 32)); /** @var resource $hs */ $hs = self::updateHashWithFile($hs, $fp, $size); $nonceHash = hash_final($hs, true); $pk = self::substr($secretKey, 32, 32); $nonce = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($nonceHash) . self::substr($nonceHash, 32); $sig = ParagonIE_Sodium_Core32_Ed25519::ge_p3_tobytes( ParagonIE_Sodium_Core32_Ed25519::ge_scalarmult_base($nonce) ); $hs = hash_init('sha512'); self::hash_update($hs, self::substr($sig, 0, 32)); self::hash_update($hs, self::substr($pk, 0, 32)); /** @var resource $hs */ $hs = self::updateHashWithFile($hs, $fp, $size); $hramHash = hash_final($hs, true); $hram = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($hramHash); $sigAfter = ParagonIE_Sodium_Core32_Ed25519::sc_muladd($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; }