LonghornPHP 2026

    sodium_crypto_aead_aegis256_decrypt

    (PHP 8 >= 8.4.0)

    sodium_crypto_aead_aegis256_decrypt — Verify then decrypt a message with AEGIS-256

    Description

    function sodium_crypto_aead_aegis256_decrypt(
        string $ciphertext,
        string $additional_data,
        string $nonce,
        #[\SensitiveParameter]string $key
    ): string|false

    Verify then decrypt a message with AEGIS-256.

    Parameters

    ciphertext

    Must be in the format provided by sodium_crypto_aead_aegis256_encrypt().

    additional_data

    Additional, authenticated data. This is used in the verification of the authentication tag appended to the ciphertext, but it is not encrypted or stored in the ciphertext.

    nonce

    A number that must be only used once, per message.

    key

    Encryption key (256-bit).

    Return Values

    Returns the plaintext on success, or false on failure.

    See Also

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