- const unsigned char *aad,size_t alen)
-{ unsigned int i;
- block128_f block = ctx->block;
-
- if (alen==0) return;
-
- ctx->nonce.c[0] |= 0x40; /* set Adata flag */
- (*block)(ctx->nonce.c,ctx->cmac.c,ctx->key),
- ctx->blocks++;
-
- if (alen<(0x10000-0x100)) {
- ctx->cmac.c[0] ^= (u8)(alen>>8);
- ctx->cmac.c[1] ^= (u8)alen;
- i=2;
- }
- else if (sizeof(alen)==8 && alen>=(size_t)1<<(32%(sizeof(alen)*8))) {
- ctx->cmac.c[0] ^= 0xFF;
- ctx->cmac.c[1] ^= 0xFF;
- ctx->cmac.c[2] ^= (u8)(alen>>(56%(sizeof(alen)*8)));
- ctx->cmac.c[3] ^= (u8)(alen>>(48%(sizeof(alen)*8)));
- ctx->cmac.c[4] ^= (u8)(alen>>(40%(sizeof(alen)*8)));
- ctx->cmac.c[5] ^= (u8)(alen>>(32%(sizeof(alen)*8)));
- ctx->cmac.c[6] ^= (u8)(alen>>24);
- ctx->cmac.c[7] ^= (u8)(alen>>16);
- ctx->cmac.c[8] ^= (u8)(alen>>8);
- ctx->cmac.c[9] ^= (u8)alen;
- i=10;
- }
- else {
- ctx->cmac.c[0] ^= 0xFF;
- ctx->cmac.c[1] ^= 0xFE;
- ctx->cmac.c[2] ^= (u8)(alen>>24);
- ctx->cmac.c[3] ^= (u8)(alen>>16);
- ctx->cmac.c[4] ^= (u8)(alen>>8);
- ctx->cmac.c[5] ^= (u8)alen;
- i=6;
- }
-
- do {
- for(;i<16 && alen;++i,++aad,--alen)
- ctx->cmac.c[i] ^= *aad;
- (*block)(ctx->cmac.c,ctx->cmac.c,ctx->key),
- ctx->blocks++;
- i=0;
- } while (alen);
+ const unsigned char *aad, size_t alen)
+{
+ unsigned int i;
+ block128_f block = ctx->block;
+
+ if (alen == 0)
+ return;
+
+ ctx->nonce.c[0] |= 0x40; /* set Adata flag */
+ (*block) (ctx->nonce.c, ctx->cmac.c, ctx->key), ctx->blocks++;
+
+ if (alen < (0x10000 - 0x100)) {
+ ctx->cmac.c[0] ^= (u8)(alen >> 8);
+ ctx->cmac.c[1] ^= (u8)alen;
+ i = 2;
+ } else if (sizeof(alen) == 8
+ && alen >= (size_t)1 << (32 % (sizeof(alen) * 8))) {
+ ctx->cmac.c[0] ^= 0xFF;
+ ctx->cmac.c[1] ^= 0xFF;
+ ctx->cmac.c[2] ^= (u8)(alen >> (56 % (sizeof(alen) * 8)));
+ ctx->cmac.c[3] ^= (u8)(alen >> (48 % (sizeof(alen) * 8)));
+ ctx->cmac.c[4] ^= (u8)(alen >> (40 % (sizeof(alen) * 8)));
+ ctx->cmac.c[5] ^= (u8)(alen >> (32 % (sizeof(alen) * 8)));
+ ctx->cmac.c[6] ^= (u8)(alen >> 24);
+ ctx->cmac.c[7] ^= (u8)(alen >> 16);
+ ctx->cmac.c[8] ^= (u8)(alen >> 8);
+ ctx->cmac.c[9] ^= (u8)alen;
+ i = 10;
+ } else {
+ ctx->cmac.c[0] ^= 0xFF;
+ ctx->cmac.c[1] ^= 0xFE;
+ ctx->cmac.c[2] ^= (u8)(alen >> 24);
+ ctx->cmac.c[3] ^= (u8)(alen >> 16);
+ ctx->cmac.c[4] ^= (u8)(alen >> 8);
+ ctx->cmac.c[5] ^= (u8)alen;
+ i = 6;
+ }
+
+ do {
+ for (; i < 16 && alen; ++i, ++aad, --alen)
+ ctx->cmac.c[i] ^= *aad;
+ (*block) (ctx->cmac.c, ctx->cmac.c, ctx->key), ctx->blocks++;
+ i = 0;
+ } while (alen);