Function dryoc::classic::crypto_secretstream_xchacha20poly1305::crypto_secretstream_xchacha20poly1305_pull

pub fn crypto_secretstream_xchacha20poly1305_pull(
    state: &mut State,
    message: &mut [u8],
    tag: &mut u8,
    ciphertext: &[u8],
    associated_data: Option<&[u8]>
) -> Result<usize, Error>

Decrypts ciphertext from the stream for state with optional additional_data, placing the result into message (which must be manually resized) and tag. Returns the length of the message.

Due to a quirk in libsodium’s implementation, you need to manually resize message to the message length after decrypting when using this function.

Compatible with libsodium’s crypto_secretstream_xchacha20poly1305_pull.

NOTE: The libsodium version of this function contains an alignment bug which was left in place, and is reflected in this implementation for compatibility purposes. Refer to commit 290197ba3ee72245fdab5e971c8de43a82b19874