Function gnunet_sys::GNUNET_CRYPTO_hmac

pub unsafe extern "C" fn GNUNET_CRYPTO_hmac(
    key: *const GNUNET_CRYPTO_AuthKey, 
    plaintext: *const c_void, 
    plaintext_len: usize, 
    hmac: *mut GNUNET_HashCode
)

@ingroup hash Calculate HMAC of a message (RFC 2104)

@param key secret key @param plaintext input plaintext @param plaintext_len length of @a plaintext @param hmac where to store the hmac