AEADChaCha20Poly1305::Decrypt

Synopses

Declared in <crypto/chacha20poly1305.h>

Decrypt a message with a specified 96-bit nonce and aad. Returns true if valid.

bool
Decrypt(
    std::span<std::byte const> cipher,
    std::span<std::byte const> aad,
    Nonce96 nonce,
    std::span<std::byte> plain) noexcept;

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Decrypt a message with a specified 96-bit nonce and aad and split the result. Returns true if valid.

bool
Decrypt(
    std::span<std::byte const> cipher,
    std::span<std::byte const> aad,
    Nonce96 nonce,
    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.
nonce	The 96-bit nonce.
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.