diff options
Diffstat (limited to 'sys/crypto/rijndael/rijndael-alg-fst.c')
| -rw-r--r-- | sys/crypto/rijndael/rijndael-alg-fst.c | 57 |
1 files changed, 51 insertions, 6 deletions
diff --git a/sys/crypto/rijndael/rijndael-alg-fst.c b/sys/crypto/rijndael/rijndael-alg-fst.c index 33d0d8a..ac9668e 100644 --- a/sys/crypto/rijndael/rijndael-alg-fst.c +++ b/sys/crypto/rijndael/rijndael-alg-fst.c @@ -1,4 +1,5 @@ -/* $KAME$ */ +/* $FreeBSD$ */ +/* $KAME: rijndael-alg-fst.c,v 1.7 2001/05/27 00:23:23 itojun Exp $ */ /* * rijndael-alg-fst.c v2.3 April '2000 @@ -14,6 +15,11 @@ #include <sys/cdefs.h> #include <sys/types.h> +#ifdef _KERNEL +#include <sys/systm.h> +#else +#include <string.h> +#endif #include <crypto/rijndael/rijndael-alg-fst.h> #include <crypto/rijndael/rijndael_local.h> @@ -24,7 +30,11 @@ int rijndaelKeySched(word8 k[MAXKC][4], word8 W[MAXROUNDS+1][4][4], int ROUNDS) * The number of calculations depends on keyBits and blockBits */ int j, r, t, rconpointer = 0; - word8 tk[MAXKC][4]; + union { + word8 x8[MAXKC][4]; + word32 x32[MAXKC]; + } xtk; +#define tk xtk.x8 int KC = ROUNDS - 6; for (j = KC-1; j >= 0; j--) { @@ -79,6 +89,7 @@ int rijndaelKeySched(word8 k[MAXKC][4], word8 W[MAXROUNDS+1][4][4], int ROUNDS) } } return 0; +#undef tk } int rijndaelKeyEncToDec(word8 W[MAXROUNDS+1][4][4], int ROUNDS) { @@ -120,9 +131,21 @@ int rijndaelKeyEncToDec(word8 W[MAXROUNDS+1][4][4], int ROUNDS) { /** * Encrypt a single block. */ -int rijndaelEncrypt(word8 a[16], word8 b[16], word8 rk[MAXROUNDS+1][4][4], int ROUNDS) { +int rijndaelEncrypt(word8 in[16], word8 out[16], word8 rk[MAXROUNDS+1][4][4], int ROUNDS) { int r; - word8 temp[4][4]; + union { + word8 x8[16]; + word32 x32[4]; + } xa, xb; +#define a xa.x8 +#define b xb.x8 + union { + word8 x8[4][4]; + word32 x32[4]; + } xtemp; +#define temp xtemp.x8 + + memcpy(a, in, sizeof a); *((word32*)temp[0]) = *((word32*)(a )) ^ *((word32*)rk[0][0]); *((word32*)temp[1]) = *((word32*)(a+ 4)) ^ *((word32*)rk[0][1]); @@ -193,7 +216,12 @@ int rijndaelEncrypt(word8 a[16], word8 b[16], word8 rk[MAXROUNDS+1][4][4], int R *((word32*)(b+ 8)) ^= *((word32*)rk[ROUNDS][2]); *((word32*)(b+12)) ^= *((word32*)rk[ROUNDS][3]); + memcpy(out, b, sizeof b /* XXX out */); + return 0; +#undef a +#undef b +#undef temp } #ifdef INTERMEDIATE_VALUE_KAT @@ -268,10 +296,22 @@ int rijndaelEncryptRound(word8 a[4][4], word8 rk[MAXROUNDS+1][4][4], int ROUNDS, /** * Decrypt a single block. */ -int rijndaelDecrypt(word8 a[16], word8 b[16], word8 rk[MAXROUNDS+1][4][4], int ROUNDS) { +int rijndaelDecrypt(word8 in[16], word8 out[16], word8 rk[MAXROUNDS+1][4][4], int ROUNDS) { int r; - word8 temp[4][4]; + union { + word8 x8[16]; + word32 x32[4]; + } xa, xb; +#define a xa.x8 +#define b xb.x8 + union { + word8 x8[4][4]; + word32 x32[4]; + } xtemp; +#define temp xtemp.x8 + memcpy(a, in, sizeof a); + *((word32*)temp[0]) = *((word32*)(a )) ^ *((word32*)rk[ROUNDS][0]); *((word32*)temp[1]) = *((word32*)(a+ 4)) ^ *((word32*)rk[ROUNDS][1]); *((word32*)temp[2]) = *((word32*)(a+ 8)) ^ *((word32*)rk[ROUNDS][2]); @@ -341,7 +381,12 @@ int rijndaelDecrypt(word8 a[16], word8 b[16], word8 rk[MAXROUNDS+1][4][4], int R *((word32*)(b+ 8)) ^= *((word32*)rk[0][2]); *((word32*)(b+12)) ^= *((word32*)rk[0][3]); + memcpy(out, b, sizeof b /* XXX out */); + return 0; +#undef a +#undef b +#undef temp } |
