aes-unwrap.c File Reference

AES key unwrap (RFC3394) More...

#include "includes.h"
#include "common.h"
#include "aes.h"
#include "aes_wrap.h"

Functions
int	aes_unwrap (const u8 *kek, size_t kek_len, int n, const u8 *cipher, u8 *plain)
	Unwrap key with AES Key Wrap Algorithm (RFC3394) More...

Detailed Description

AES key unwrap (RFC3394)

Function Documentation

int aes_unwrap	(	const u8 *	kek,
		size_t	kek_len,
		int	n,
		const u8 *	cipher,
		u8 *	plain
	)

Unwrap key with AES Key Wrap Algorithm (RFC3394)

Parameters

kek	Key encryption key (KEK)
kek_len	Length of KEK in octets
n	Length of the plaintext key in 64-bit units; e.g., 2 = 128-bit = 16 bytes
cipher	Wrapped key to be unwrapped, (n + 1) * 64 bits
plain	Plaintext key, n * 64 bits

Returns

0 on success, -1 on failure (e.g., integrity verification failed)