FSChaCha20Poly1305::Decrypt

Synopses

Declared in <crypto/chacha20poly1305.h>

Decrypt a message with a specified aad. Returns true if valid.

bool
Decrypt(
    std::span<std::byte const> cipher,
    std::span<std::byte const> aad,
    std::span<std::byte> plain) noexcept;

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Decrypt a message with a specified aad and split the result. Returns true if valid.

bool
Decrypt(
    std::span<std::byte const> cipher,
    std::span<std::byte const> aad,
    std::span<std::byte> plain1,
    std::span<std::byte> plain2) noexcept;

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Return Value

true if the tag is valid and decryption succeeded, false otherwise.

Parameters

Name	Description
cipher	The ciphertext and authentication tag to decrypt and verify.
aad	The associated data to authenticate.
plain	Output buffer receiving the recovered plaintext.
plain1	Output buffer receiving the first part of the recovered plaintext.
plain2	Output buffer receiving the second part of the recovered plaintext.