* ====================================================================
*/
+#include <openssl/crypto.h>
#include "modes_lcl.h"
#include <string.h>
size_t rem, nlo, nhi;
const union { long one; char little; } is_endian = {1};
+#if 1
do {
cnt = 15;
nlo = ((const u8 *)Xi)[15];
Z.hi ^= Htable[nlo].hi;
Z.lo ^= Htable[nlo].lo;
}
+#else
+ /*
+ * Extra 256+16 bytes per-key plus 512 bytes shared tables
+ * [should] give ~50% improvement... One could have PACK()-ed
+ * the rem_8bit even here, but the priority is to minimize
+ * cache footprint...
+ */
+ u128 Hshr4[16]; /* Htable shifted right by 4 bits */
+ u8 Hshl4[16]; /* Htable shifted left by 4 bits */
+ static const unsigned short rem_8bit[256] = {
+ 0x0000, 0x01C2, 0x0384, 0x0246, 0x0708, 0x06CA, 0x048C, 0x054E,
+ 0x0E10, 0x0FD2, 0x0D94, 0x0C56, 0x0918, 0x08DA, 0x0A9C, 0x0B5E,
+ 0x1C20, 0x1DE2, 0x1FA4, 0x1E66, 0x1B28, 0x1AEA, 0x18AC, 0x196E,
+ 0x1230, 0x13F2, 0x11B4, 0x1076, 0x1538, 0x14FA, 0x16BC, 0x177E,
+ 0x3840, 0x3982, 0x3BC4, 0x3A06, 0x3F48, 0x3E8A, 0x3CCC, 0x3D0E,
+ 0x3650, 0x3792, 0x35D4, 0x3416, 0x3158, 0x309A, 0x32DC, 0x331E,
+ 0x2460, 0x25A2, 0x27E4, 0x2626, 0x2368, 0x22AA, 0x20EC, 0x212E,
+ 0x2A70, 0x2BB2, 0x29F4, 0x2836, 0x2D78, 0x2CBA, 0x2EFC, 0x2F3E,
+ 0x7080, 0x7142, 0x7304, 0x72C6, 0x7788, 0x764A, 0x740C, 0x75CE,
+ 0x7E90, 0x7F52, 0x7D14, 0x7CD6, 0x7998, 0x785A, 0x7A1C, 0x7BDE,
+ 0x6CA0, 0x6D62, 0x6F24, 0x6EE6, 0x6BA8, 0x6A6A, 0x682C, 0x69EE,
+ 0x62B0, 0x6372, 0x6134, 0x60F6, 0x65B8, 0x647A, 0x663C, 0x67FE,
+ 0x48C0, 0x4902, 0x4B44, 0x4A86, 0x4FC8, 0x4E0A, 0x4C4C, 0x4D8E,
+ 0x46D0, 0x4712, 0x4554, 0x4496, 0x41D8, 0x401A, 0x425C, 0x439E,
+ 0x54E0, 0x5522, 0x5764, 0x56A6, 0x53E8, 0x522A, 0x506C, 0x51AE,
+ 0x5AF0, 0x5B32, 0x5974, 0x58B6, 0x5DF8, 0x5C3A, 0x5E7C, 0x5FBE,
+ 0xE100, 0xE0C2, 0xE284, 0xE346, 0xE608, 0xE7CA, 0xE58C, 0xE44E,
+ 0xEF10, 0xEED2, 0xEC94, 0xED56, 0xE818, 0xE9DA, 0xEB9C, 0xEA5E,
+ 0xFD20, 0xFCE2, 0xFEA4, 0xFF66, 0xFA28, 0xFBEA, 0xF9AC, 0xF86E,
+ 0xF330, 0xF2F2, 0xF0B4, 0xF176, 0xF438, 0xF5FA, 0xF7BC, 0xF67E,
+ 0xD940, 0xD882, 0xDAC4, 0xDB06, 0xDE48, 0xDF8A, 0xDDCC, 0xDC0E,
+ 0xD750, 0xD692, 0xD4D4, 0xD516, 0xD058, 0xD19A, 0xD3DC, 0xD21E,
+ 0xC560, 0xC4A2, 0xC6E4, 0xC726, 0xC268, 0xC3AA, 0xC1EC, 0xC02E,
+ 0xCB70, 0xCAB2, 0xC8F4, 0xC936, 0xCC78, 0xCDBA, 0xCFFC, 0xCE3E,
+ 0x9180, 0x9042, 0x9204, 0x93C6, 0x9688, 0x974A, 0x950C, 0x94CE,
+ 0x9F90, 0x9E52, 0x9C14, 0x9DD6, 0x9898, 0x995A, 0x9B1C, 0x9ADE,
+ 0x8DA0, 0x8C62, 0x8E24, 0x8FE6, 0x8AA8, 0x8B6A, 0x892C, 0x88EE,
+ 0x83B0, 0x8272, 0x8034, 0x81F6, 0x84B8, 0x857A, 0x873C, 0x86FE,
+ 0xA9C0, 0xA802, 0xAA44, 0xAB86, 0xAEC8, 0xAF0A, 0xAD4C, 0xAC8E,
+ 0xA7D0, 0xA612, 0xA454, 0xA596, 0xA0D8, 0xA11A, 0xA35C, 0xA29E,
+ 0xB5E0, 0xB422, 0xB664, 0xB7A6, 0xB2E8, 0xB32A, 0xB16C, 0xB0AE,
+ 0xBBF0, 0xBA32, 0xB874, 0xB9B6, 0xBCF8, 0xBD3A, 0xBF7C, 0xBEBE };
+ /*
+ * This pre-processing phase slows down procedure by approximately
+ * same time as it makes each loop spin faster. In other words
+ * single block performance is approximately same as straightforward
+ * "4-bit" implementation, and then it goes only faster...
+ */
+ for (cnt=0; cnt<16; ++cnt) {
+ Z.hi = Htable[cnt].hi;
+ Z.lo = Htable[cnt].lo;
+ Hshr4[cnt].lo = (Z.hi<<60)|(Z.lo>>4);
+ Hshr4[cnt].hi = (Z.hi>>4);
+ Hshl4[cnt] = (u8)(Z.lo<<4);
+ }
+
+ do {
+ for (Z.lo=0, Z.hi=0, cnt=15; cnt; --cnt) {
+ nlo = ((const u8 *)Xi)[cnt];
+ nlo ^= inp[cnt];
+ nhi = nlo>>4;
+ nlo &= 0xf;
+
+ Z.hi ^= Htable[nlo].hi;
+ Z.lo ^= Htable[nlo].lo;
+
+ rem = (size_t)Z.lo&0xff;
+
+ Z.lo = (Z.hi<<56)|(Z.lo>>8);
+ Z.hi = (Z.hi>>8);
+
+ Z.hi ^= Hshr4[nhi].hi;
+ Z.lo ^= Hshr4[nhi].lo;
+ Z.hi ^= (u64)rem_8bit[rem^Hshl4[nhi]]<<48;
+ }
+
+ nlo = ((const u8 *)Xi)[0];
+ nlo ^= inp[0];
+ nhi = nlo>>4;
+ nlo &= 0xf;
+
+ Z.hi ^= Htable[nlo].hi;
+ Z.lo ^= Htable[nlo].lo;
+
+ rem = (size_t)Z.lo&0xf;
+
+ Z.lo = (Z.hi<<60)|(Z.lo>>4);
+ Z.hi = (Z.hi>>4);
+
+ Z.hi ^= Htable[nhi].hi;
+ Z.lo ^= Htable[nhi].lo;
+ Z.hi ^= ((u64)rem_8bit[rem<<4])<<48;
+#endif
if (is_endian.little) {
#ifdef BSWAP8
#if TABLE_BITS==8
gcm_init_8bit(ctx->Htable,ctx->H.u);
#elif TABLE_BITS==4
-# if defined(GHASH_ASM_IAX)
+# if defined(GHASH_ASM_IAX) /* both x86 and x86_64 */
if (OPENSSL_ia32cap_P[1]&(1<<1)) {
gcm_init_clmul(ctx->Htable,ctx->H.u);
ctx->gmult = gcm_gmult_clmul;
return;
}
gcm_init_4bit(ctx->Htable,ctx->H.u);
-# if defined(GHASH_ASM_X86)
+# if defined(GHASH_ASM_X86) /* x86 only */
if (OPENSSL_ia32cap_P[0]&(1<<23)) {
ctx->gmult = gcm_gmult_4bit_mmx;
ctx->ghash = gcm_ghash_4bit_mmx;
ctx->res = n;
}
-void CRYPTO_gcm128_finish(GCM128_CONTEXT *ctx)
+int CRYPTO_gcm128_finish(GCM128_CONTEXT *ctx,const unsigned char *tag,
+ size_t len)
{
const union { long one; char little; } is_endian = {1};
u64 alen = ctx->len.u[0]<<3;
ctx->Xi.u[0] ^= ctx->EK0.u[0];
ctx->Xi.u[1] ^= ctx->EK0.u[1];
+
+ if (tag && len<=sizeof(ctx->Xi))
+ return memcmp(ctx->Xi.c,tag,len);
+ else
+ return -1;
+}
+
+GCM128_CONTEXT *CRYPTO_gcm128_new(void *key, block128_f block)
+{
+ GCM128_CONTEXT *ret;
+
+ if ((ret = (GCM128_CONTEXT *)OPENSSL_malloc(sizeof(GCM128_CONTEXT))))
+ CRYPTO_gcm128_init(ret,key,block);
+
+ return ret;
+}
+
+void CRYPTO_gcm128_release(GCM128_CONTEXT *ctx)
+{
+ if (ctx) {
+ OPENSSL_cleanse(ctx,sizeof(*ctx));
+ OPENSSL_free(ctx);
+ }
}
#if defined(SELFTEST)
CRYPTO_gcm128_setiv(&ctx,IV##n,sizeof(IV##n)); \
if (A##n) CRYPTO_gcm128_aad(&ctx,A##n,sizeof(A##n)); \
if (P##n) CRYPTO_gcm128_encrypt(&ctx,P##n,out,sizeof(out)); \
- CRYPTO_gcm128_finish(&ctx); \
- if (memcmp(ctx.Xi.c,T##n,16) || (C##n && memcmp(out,C##n,sizeof(out)))) \
+ if (CRYPTO_gcm128_finish(&ctx,T##n,16) || \
+ (C##n && memcmp(out,C##n,sizeof(out)))) \
ret++, printf ("encrypt test#%d failed.\n",n);\
CRYPTO_gcm128_setiv(&ctx,IV##n,sizeof(IV##n)); \
if (A##n) CRYPTO_gcm128_aad(&ctx,A##n,sizeof(A##n)); \
if (C##n) CRYPTO_gcm128_decrypt(&ctx,C##n,out,sizeof(out)); \
- CRYPTO_gcm128_finish(&ctx); \
- if (memcmp(ctx.Xi.c,T##n,16) || (P##n && memcmp(out,P##n,sizeof(out)))) \
- ret++, printf ("decrypt test#%d failed.\n",n);\
+ if (CRYPTO_gcm128_finish(&ctx,T##n,16) || \
+ (P##n && memcmp(out,P##n,sizeof(out)))) \
+ ret++, printf ("decrypt test#%d failed.\n",n); \
} while(0)
int main()
projects / openssl.git / blobdiff