Function Hacl_Chacha20Poly1305_256_aead_decrypt

pub unsafe extern "C" fn Hacl_Chacha20Poly1305_256_aead_decrypt(
    k: *mut u8,
    n: *mut u8,
    aadlen: u32,
    aad: *mut u8,
    mlen: u32,
    m: *mut u8,
    cipher: *mut u8,
    mac: *mut u8,
) -> u32

Decrypt a ciphertext cipher with key k.

The arguments k, n, aadlen, and aad are same in encryption/decryption. Note: Encryption and decryption can be executed in-place, i.e., m and cipher can point to the same memory.

If decryption succeeds, the resulting plaintext is stored in m and the function returns the success code 0. If decryption fails, the array m remains unchanged and the function returns the error code 1.

@param k Pointer to 32 bytes of memory where the AEAD key is read from. @param n Pointer to 12 bytes of memory where the AEAD nonce is read from. @param aadlen Length of the associated data. @param aad Pointer to aadlen bytes of memory where the associated data is read from.

@param mlen Length of the ciphertext. @param m Pointer to mlen bytes of memory where the message is written to. @param cipher Pointer to mlen bytes of memory where the ciphertext is read from. @param mac Pointer to 16 bytes of memory where the mac is read from.

@returns 0 on succeess; 1 on failure.