public static function ParagonIE_Sodium_Compat::crypto_box in Automatic Updates 7

Same name and namespace in other branches

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

Authenticated asymmetric-key encryption. Both the sender and recipient may decrypt messages.

Algorithm: X25519-XSalsa20-Poly1305. X25519: Elliptic-Curve Diffie Hellman over Curve25519. XSalsa20: Extended-nonce variant of salsa20. Poyl1305: Polynomial MAC for one-time message authentication.

@psalm-suppress MixedArgument

Parameters

string $plaintext The message to be encrypted:

string $nonce A Number to only be used Once; must be 24 bytes:

string $keypair Your secret key and your recipient's public key:

Return value

string Ciphertext with 16-byte Poly1305 MAC

Throws

SodiumException

TypeError

2 calls to ParagonIE_Sodium_Compat::crypto_box()

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 1045

Class

ParagonIE_Sodium_Compat

Code

public static function crypto_box($plaintext, $nonce, $keypair) {

  /* Type checks: */
  ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
  ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
  ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 3);

  /* Input validation: */
  if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_BOX_NONCEBYTES) {
    throw new SodiumException('Argument 2 must be CRYPTO_BOX_NONCEBYTES long.');
  }
  if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
    throw new SodiumException('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES long.');
  }
  if (self::useNewSodiumAPI()) {
    return (string) sodium_crypto_box($plaintext, $nonce, $keypair);
  }
  if (self::use_fallback('crypto_box')) {
    return (string) call_user_func('\\Sodium\\crypto_box', $plaintext, $nonce, $keypair);
  }
  if (PHP_INT_SIZE === 4) {
    return ParagonIE_Sodium_Crypto32::box($plaintext, $nonce, $keypair);
  }
  return ParagonIE_Sodium_Crypto::box($plaintext, $nonce, $keypair);
}