XSalsa20.php in Automatic Updates 8

File

vendor/paragonie/sodium_compat/src/Core/XSalsa20.php

<?php

if (class_exists('ParagonIE_Sodium_Core_XSalsa20', false)) {
  return;
}

/**
 * Class ParagonIE_Sodium_Core_XSalsa20
 */
abstract class ParagonIE_Sodium_Core_XSalsa20 extends ParagonIE_Sodium_Core_HSalsa20 {

  /**
   * Expand a key and nonce into an xsalsa20 keystream.
   *
   * @internal You should not use this directly from another application
   *
   * @param int $len
   * @param string $nonce
   * @param string $key
   * @return string
   * @throws SodiumException
   * @throws TypeError
   */
  public static function xsalsa20($len, $nonce, $key) {
    $ret = self::salsa20($len, self::substr($nonce, 16, 8), self::hsalsa20($nonce, $key));
    return $ret;
  }

  /**
   * Encrypt a string with XSalsa20. Doesn't provide integrity.
   *
   * @internal You should not use this directly from another application
   *
   * @param string $message
   * @param string $nonce
   * @param string $key
   * @return string
   * @throws SodiumException
   * @throws TypeError
   */
  public static function xsalsa20_xor($message, $nonce, $key) {
    return self::xorStrings($message, self::xsalsa20(self::strlen($message), $nonce, $key));
  }

}

Classes

Name	Description
ParagonIE_Sodium_Core_XSalsa20	Class ParagonIE_Sodium_Core_XSalsa20