Function krb5_sys::krb5_k_decrypt_iov

pub unsafe extern "C" fn krb5_k_decrypt_iov(
    context: krb5_context, 
    key: krb5_key, 
    usage: krb5_keyusage, 
    cipher_state: *const krb5_data, 
    data: *mut krb5_crypto_iov, 
    num_data: usize
) -> krb5_error_code