Function crypto_box_open_easy_afternm 

pub fn crypto_box_open_easy_afternm(
    message: &mut [u8],
    ciphertext: &[u8],
    nonce: &Nonce,
    key: &Key,
) -> Result<(), Error>

Decrypts a box using a key computed by crypto_box_beforenm.

Compatible with libsodium’s crypto_box_open_easy_afternm.

Errors

Returns an error if ciphertext is shorter than an authentication tag, message has the wrong length, or authentication fails.