Function nrfxlib_sys::ocrypto_chacha20_poly1305_decrypt

pub unsafe extern "C" fn ocrypto_chacha20_poly1305_decrypt(
    tag: *const u8,
    m: *mut u8,
    c: *const u8,
    c_len: usize,
    a: *const u8,
    a_len: usize,
    n: *const u8,
    n_len: usize,
    k: *const u8
) -> c_int

AEAD ChaCha20-Poly1305 decrypt.

If the authentication tag * tag - is valid for the ciphertext * c - , the additional authenticated data * a - , the encryption key * k - and the nonce

• n - , the ciphertext is decrypted and put into * m - . The decrypted message

• m - has the same length * c_len - as the original ciphertext.

• tag - Received authentication tag.

• m - Decoded message. Same length as received ciphertext.

• c - Received ciphertext.

• c_len - Length of * c - and * m - .

• a - Received additional authenticated data.

• a_len - Length of * a - . May be 0.

• n - Nonce.

• n_len - Length of * n - . 0 <= * n_len - <= * ocrypto_chacha20_poly1305_NONCE_BYTES_MAX - .

• k - Encryption key.

Returns 0 If * tag - is valid. Returns -1 Otherwise.

@remark * m - may be same as * c - .