src/usr.bin/ssh/umac.c - diff

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version 1.9, 2014/04/20 02:30:25

version 1.10, 2014/04/30 19:07:48

Line 151

/* UMAC uses AES with 16 byte block and key lengths */

#define AES_BLOCK_LEN 16

/* OpenSSL's AES */

#ifdef WITH_OPENSSL

#include <openssl/aes.h>

typedef AES_KEY aes_int_key[1];

#define aes_encryption(in,out,int_key) \

AES_encrypt((u_char *)(in),(u_char *)(out),(AES_KEY *)int_key)

#define aes_key_setup(key,int_key) \

AES_set_encrypt_key((const u_char *)(key),UMAC_KEY_LEN*8,int_key)

#else

#include "rijndael.h"

#define AES_ROUNDS ((UMAC_KEY_LEN / 4) + 6)

typedef UINT8 aes_int_key[AES_ROUNDS+1][4][4]; /* AES internal */

#define aes_encryption(in,out,int_key) \

rijndaelEncrypt((u32 *)(int_key), AES_ROUNDS, (u8 *)(in), (u8 *)(out))

#define aes_key_setup(key,int_key) \

rijndaelKeySetupEnc((u32 *)(int_key), (const unsigned char *)(key), \

UMAC_KEY_LEN*8)

#endif

/* The user-supplied UMAC key is stretched using AES in a counter

* mode to supply all random bits needed by UMAC. The kdf function takes