Encrypt a message with a specified 96‐bit nonce and aad.

Synopsis

Declared in <crypto/chacha20poly1305.h>

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

Description

Requires cipher.size() = plain.size() + EXPANSION.

Parameters

Name

Description

plain

The plaintext to encrypt.

aad

The associated data to authenticate but not encrypt.

nonce

The 96‐bit nonce.

cipher

Output buffer receiving the ciphertext and authentication tag.

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