public static function ParagonIE_Sodium_Compat::crypto_scalarmult_base in Automatic Updates 7

Same name and namespace in other branches

1. 8 vendor/paragonie/sodium_compat/src/Compat.php \ParagonIE_Sodium_Compat::crypto_scalarmult_base()

Calculate an X25519 public key from an X25519 secret key.

@psalm-suppress TooFewArguments @psalm-suppress MixedArgument

Parameters

string $secretKey:

Return value

string

Throws

SodiumException

TypeError

4 calls to ParagonIE_Sodium_Compat::crypto_scalarmult_base()

ParagonIE_Sodium_Compat::crypto_kx_keypair in vendor/paragonie/sodium_compat/src/Compat.php

ParagonIE_Sodium_Compat::crypto_kx_seed_keypair in vendor/paragonie/sodium_compat/src/Compat.php

php72compat.php in vendor/paragonie/sodium_compat/lib/php72compat.php

sodium_compat.php in vendor/paragonie/sodium_compat/lib/sodium_compat.php

File

vendor/paragonie/sodium_compat/src/Compat.php, line 2218

Class

ParagonIE_Sodium_Compat

Code

public static function crypto_scalarmult_base($secretKey) {

  /* Type checks: */
  ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);

  /* Input validation: */
  if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
    throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
  }
  if (self::useNewSodiumAPI()) {
    return sodium_crypto_scalarmult_base($secretKey);
  }
  if (self::use_fallback('crypto_scalarmult_base')) {
    return (string) call_user_func('\\Sodium\\crypto_scalarmult_base', $secretKey);
  }
  if (ParagonIE_Sodium_Core_Util::hashEquals($secretKey, str_repeat("\0", self::CRYPTO_BOX_SECRETKEYBYTES))) {
    throw new SodiumException('Zero secret key is not allowed');
  }
  if (PHP_INT_SIZE === 4) {
    return ParagonIE_Sodium_Crypto32::scalarmult_base($secretKey);
  }
  return ParagonIE_Sodium_Crypto::scalarmult_base($secretKey);
}