diff options
author | Kevin Steves <stevesk@pobox.com> | 2001-02-05 12:42:17 +0000 |
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committer | Kevin Steves <stevesk@pobox.com> | 2001-02-05 12:42:17 +0000 |
commit | ef4eea9badfb65f05ac24f786b710cc3f27f0e43 (patch) | |
tree | f54abef181ccd6ad5285a5c16b4c159d8b74e932 /rijndael.c | |
parent | d2ddda4efab29fd8663757634773fa10e557e0f3 (diff) |
- stevesk@cvs.openbsd.org 2001/02/04 08:32:27
[many files; did this manually to our top-level source dir]
unexpand and remove end-of-line whitespace; ok markus@
Diffstat (limited to 'rijndael.c')
-rw-r--r-- | rijndael.c | 114 |
1 files changed, 57 insertions, 57 deletions
@@ -54,7 +54,7 @@ void gen_tabs __P((void)); #define bswap(x) ((rotl(x, 8) & 0x00ff00ff) | (rotr(x, 8) & 0xff00ff00)) -/* Extract byte from a 32 bit quantity (little endian notation) */ +/* Extract byte from a 32 bit quantity (little endian notation) */ #define byte(x,n) ((u1byte)((x) >> (8 * n))) @@ -89,15 +89,15 @@ u4byte tab_gen = 0; #define f_rn(bo, bi, n, k) \ bo[n] = ft_tab[0][byte(bi[n],0)] ^ \ - ft_tab[1][byte(bi[(n + 1) & 3],1)] ^ \ - ft_tab[2][byte(bi[(n + 2) & 3],2)] ^ \ - ft_tab[3][byte(bi[(n + 3) & 3],3)] ^ *(k + n) + ft_tab[1][byte(bi[(n + 1) & 3],1)] ^ \ + ft_tab[2][byte(bi[(n + 2) & 3],2)] ^ \ + ft_tab[3][byte(bi[(n + 3) & 3],3)] ^ *(k + n) #define i_rn(bo, bi, n, k) \ bo[n] = it_tab[0][byte(bi[n],0)] ^ \ - it_tab[1][byte(bi[(n + 3) & 3],1)] ^ \ - it_tab[2][byte(bi[(n + 2) & 3],2)] ^ \ - it_tab[3][byte(bi[(n + 1) & 3],3)] ^ *(k + n) + it_tab[1][byte(bi[(n + 3) & 3],1)] ^ \ + it_tab[2][byte(bi[(n + 2) & 3],2)] ^ \ + it_tab[3][byte(bi[(n + 1) & 3],3)] ^ *(k + n) #ifdef LARGE_TABLES @@ -109,15 +109,15 @@ u4byte tab_gen = 0; #define f_rl(bo, bi, n, k) \ bo[n] = fl_tab[0][byte(bi[n],0)] ^ \ - fl_tab[1][byte(bi[(n + 1) & 3],1)] ^ \ - fl_tab[2][byte(bi[(n + 2) & 3],2)] ^ \ - fl_tab[3][byte(bi[(n + 3) & 3],3)] ^ *(k + n) + fl_tab[1][byte(bi[(n + 1) & 3],1)] ^ \ + fl_tab[2][byte(bi[(n + 2) & 3],2)] ^ \ + fl_tab[3][byte(bi[(n + 3) & 3],3)] ^ *(k + n) #define i_rl(bo, bi, n, k) \ bo[n] = il_tab[0][byte(bi[n],0)] ^ \ - il_tab[1][byte(bi[(n + 3) & 3],1)] ^ \ - il_tab[2][byte(bi[(n + 2) & 3],2)] ^ \ - il_tab[3][byte(bi[(n + 1) & 3],3)] ^ *(k + n) + il_tab[1][byte(bi[(n + 3) & 3],1)] ^ \ + il_tab[2][byte(bi[(n + 2) & 3],2)] ^ \ + il_tab[3][byte(bi[(n + 1) & 3],3)] ^ *(k + n) #else @@ -129,15 +129,15 @@ u4byte tab_gen = 0; #define f_rl(bo, bi, n, k) \ bo[n] = (u4byte)sbx_tab[byte(bi[n],0)] ^ \ - rotl(((u4byte)sbx_tab[byte(bi[(n + 1) & 3],1)]), 8) ^ \ - rotl(((u4byte)sbx_tab[byte(bi[(n + 2) & 3],2)]), 16) ^ \ - rotl(((u4byte)sbx_tab[byte(bi[(n + 3) & 3],3)]), 24) ^ *(k + n) + rotl(((u4byte)sbx_tab[byte(bi[(n + 1) & 3],1)]), 8) ^ \ + rotl(((u4byte)sbx_tab[byte(bi[(n + 2) & 3],2)]), 16) ^ \ + rotl(((u4byte)sbx_tab[byte(bi[(n + 3) & 3],3)]), 24) ^ *(k + n) #define i_rl(bo, bi, n, k) \ bo[n] = (u4byte)isb_tab[byte(bi[n],0)] ^ \ - rotl(((u4byte)isb_tab[byte(bi[(n + 3) & 3],1)]), 8) ^ \ - rotl(((u4byte)isb_tab[byte(bi[(n + 2) & 3],2)]), 16) ^ \ - rotl(((u4byte)isb_tab[byte(bi[(n + 1) & 3],3)]), 24) ^ *(k + n) + rotl(((u4byte)isb_tab[byte(bi[(n + 3) & 3],1)]), 8) ^ \ + rotl(((u4byte)isb_tab[byte(bi[(n + 2) & 3],2)]), 16) ^ \ + rotl(((u4byte)isb_tab[byte(bi[(n + 1) & 3],3)]), 24) ^ *(k + n) #endif @@ -160,7 +160,7 @@ gen_tabs(void) log_tab[1] = 0; p = 1; for(i = 0; i < 10; ++i) { - rco_tab[i] = p; + rco_tab[i] = p; p = (p << 1) ^ (p & 0x80 ? 0x1b : 0); } @@ -172,19 +172,19 @@ gen_tabs(void) /* least significant end of a byte. */ for(i = 0; i < 256; ++i) { - p = (i ? pow_tab[255 - log_tab[i]] : 0); q = p; - q = (q >> 7) | (q << 1); p ^= q; - q = (q >> 7) | (q << 1); p ^= q; - q = (q >> 7) | (q << 1); p ^= q; - q = (q >> 7) | (q << 1); p ^= q ^ 0x63; + p = (i ? pow_tab[255 - log_tab[i]] : 0); q = p; + q = (q >> 7) | (q << 1); p ^= q; + q = (q >> 7) | (q << 1); p ^= q; + q = (q >> 7) | (q << 1); p ^= q; + q = (q >> 7) | (q << 1); p ^= q ^ 0x63; sbx_tab[i] = (u1byte)p; isb_tab[p] = (u1byte)i; } for(i = 0; i < 256; ++i) { - p = sbx_tab[i]; + p = sbx_tab[i]; + +#ifdef LARGE_TABLES -#ifdef LARGE_TABLES - t = p; fl_tab[0][i] = t; fl_tab[1][i] = rotl(t, 8); fl_tab[2][i] = rotl(t, 16); @@ -194,30 +194,30 @@ gen_tabs(void) ((u4byte)p << 8) | ((u4byte)p << 16) | ((u4byte)ff_mult(3, p) << 24); - + ft_tab[0][i] = t; ft_tab[1][i] = rotl(t, 8); ft_tab[2][i] = rotl(t, 16); ft_tab[3][i] = rotl(t, 24); - p = isb_tab[i]; + p = isb_tab[i]; -#ifdef LARGE_TABLES - - t = p; il_tab[0][i] = t; - il_tab[1][i] = rotl(t, 8); - il_tab[2][i] = rotl(t, 16); +#ifdef LARGE_TABLES + + t = p; il_tab[0][i] = t; + il_tab[1][i] = rotl(t, 8); + il_tab[2][i] = rotl(t, 16); il_tab[3][i] = rotl(t, 24); -#endif +#endif t = ((u4byte)ff_mult(14, p)) | ((u4byte)ff_mult( 9, p) << 8) | ((u4byte)ff_mult(13, p) << 16) | ((u4byte)ff_mult(11, p) << 24); - - it_tab[0][i] = t; - it_tab[1][i] = rotl(t, 8); - it_tab[2][i] = rotl(t, 16); - it_tab[3][i] = rotl(t, 24); + + it_tab[0][i] = t; + it_tab[1][i] = rotl(t, 8); + it_tab[2][i] = rotl(t, 16); + it_tab[3][i] = rotl(t, 24); } tab_gen = 1; @@ -232,8 +232,8 @@ gen_tabs(void) t = w ^ (x); \ (y) = u ^ v ^ w; \ (y) ^= rotr(u ^ t, 8) ^ \ - rotr(v ^ t, 16) ^ \ - rotr(t,24) + rotr(v ^ t, 16) ^ \ + rotr(t,24) /* initialise the key schedule from the user supplied key */ @@ -271,7 +271,7 @@ gen_tabs(void) rijndael_ctx * rijndael_set_key(rijndael_ctx *ctx, const u4byte *in_key, const u4byte key_len, int encrypt) -{ +{ u4byte i, t, u, v, w; u4byte *e_key = ctx->e_key; u4byte *d_key = ctx->d_key; @@ -285,23 +285,23 @@ rijndael_set_key(rijndael_ctx *ctx, const u4byte *in_key, const u4byte key_len, e_key[0] = io_swap(in_key[0]); e_key[1] = io_swap(in_key[1]); e_key[2] = io_swap(in_key[2]); e_key[3] = io_swap(in_key[3]); - + switch(ctx->k_len) { - case 4: t = e_key[3]; - for(i = 0; i < 10; ++i) + case 4: t = e_key[3]; + for(i = 0; i < 10; ++i) loop4(i); - break; + break; - case 6: e_key[4] = io_swap(in_key[4]); t = e_key[5] = io_swap(in_key[5]); - for(i = 0; i < 8; ++i) + case 6: e_key[4] = io_swap(in_key[4]); t = e_key[5] = io_swap(in_key[5]); + for(i = 0; i < 8; ++i) loop6(i); - break; + break; - case 8: e_key[4] = io_swap(in_key[4]); e_key[5] = io_swap(in_key[5]); - e_key[6] = io_swap(in_key[6]); t = e_key[7] = io_swap(in_key[7]); - for(i = 0; i < 7; ++i) + case 8: e_key[4] = io_swap(in_key[4]); e_key[5] = io_swap(in_key[5]); + e_key[6] = io_swap(in_key[6]); t = e_key[7] = io_swap(in_key[7]); + for(i = 0; i < 7; ++i) loop8(i); - break; + break; } if (!encrypt) { @@ -333,7 +333,7 @@ rijndael_set_key(rijndael_ctx *ctx, const u4byte *in_key, const u4byte key_len, void rijndael_encrypt(rijndael_ctx *ctx, const u4byte *in_blk, u4byte *out_blk) -{ +{ u4byte k_len = ctx->k_len; u4byte *e_key = ctx->e_key; u4byte b0[4], b1[4], *kp; @@ -380,7 +380,7 @@ rijndael_encrypt(rijndael_ctx *ctx, const u4byte *in_blk, u4byte *out_blk) void rijndael_decrypt(rijndael_ctx *ctx, const u4byte *in_blk, u4byte *out_blk) -{ +{ u4byte b0[4], b1[4], *kp; u4byte k_len = ctx->k_len; u4byte *e_key = ctx->e_key; |