1 /* ====================================================================
2 * Copyright (c) 2010 The OpenSSL Project. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
16 * 3. All advertising materials mentioning features or use of this
17 * software must display the following acknowledgment:
18 * "This product includes software developed by the OpenSSL Project
19 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
22 * endorse or promote products derived from this software without
23 * prior written permission. For written permission, please contact
24 * openssl-core@openssl.org.
26 * 5. Products derived from this software may not be called "OpenSSL"
27 * nor may "OpenSSL" appear in their names without prior written
28 * permission of the OpenSSL Project.
30 * 6. Redistributions of any form whatsoever must retain the following
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
46 * OF THE POSSIBILITY OF SUCH DAMAGE.
47 * ====================================================================
50 #define OPENSSL_FIPSAPI
52 #include <openssl/crypto.h>
53 #include "modes_lcl.h"
63 #if defined(BSWAP4) && defined(STRICT_ALIGNMENT)
64 /* redefine, because alignment is ensured */
66 #define GETU32(p) BSWAP4(*(const u32 *)(p))
68 #define PUTU32(p,v) *(u32 *)(p) = BSWAP4(v)
71 #define PACK(s) ((size_t)(s)<<(sizeof(size_t)*8-16))
72 #define REDUCE1BIT(V) do { \
73 if (sizeof(size_t)==8) { \
74 u64 T = U64(0xe100000000000000) & (0-(V.lo&1)); \
75 V.lo = (V.hi<<63)|(V.lo>>1); \
76 V.hi = (V.hi>>1 )^T; \
79 u32 T = 0xe1000000U & (0-(u32)(V.lo&1)); \
80 V.lo = (V.hi<<63)|(V.lo>>1); \
81 V.hi = (V.hi>>1 )^((u64)T<<32); \
86 * Even though permitted values for TABLE_BITS are 8, 4 and 1, it should
87 * never be set to 8. 8 is effectively reserved for testing purposes.
88 * TABLE_BITS>1 are lookup-table-driven implementations referred to as
89 * "Shoup's" in GCM specification. In other words OpenSSL does not cover
90 * whole spectrum of possible table driven implementations. Why? In
91 * non-"Shoup's" case memory access pattern is segmented in such manner,
92 * that it's trivial to see that cache timing information can reveal
93 * fair portion of intermediate hash value. Given that ciphertext is
94 * always available to attacker, it's possible for him to attempt to
95 * deduce secret parameter H and if successful, tamper with messages
96 * [which is nothing but trivial in CTR mode]. In "Shoup's" case it's
97 * not as trivial, but there is no reason to believe that it's resistant
98 * to cache-timing attack. And the thing about "8-bit" implementation is
99 * that it consumes 16 (sixteen) times more memory, 4KB per individual
100 * key + 1KB shared. Well, on pros side it should be twice as fast as
101 * "4-bit" version. And for gcc-generated x86[_64] code, "8-bit" version
102 * was observed to run ~75% faster, closer to 100% for commercial
103 * compilers... Yet "4-bit" procedure is preferred, because it's
104 * believed to provide better security-performance balance and adequate
105 * all-round performance. "All-round" refers to things like:
107 * - shorter setup time effectively improves overall timing for
108 * handling short messages;
109 * - larger table allocation can become unbearable because of VM
110 * subsystem penalties (for example on Windows large enough free
111 * results in VM working set trimming, meaning that consequent
112 * malloc would immediately incur working set expansion);
113 * - larger table has larger cache footprint, which can affect
114 * performance of other code paths (not necessarily even from same
115 * thread in Hyper-Threading world);
117 * Value of 1 is not appropriate for performance reasons.
121 static void gcm_init_8bit(u128 Htable[256], u64 H[2])
131 for (Htable[128]=V, i=64; i>0; i>>=1) {
136 for (i=2; i<256; i<<=1) {
137 u128 *Hi = Htable+i, H0 = *Hi;
138 for (j=1; j<i; ++j) {
139 Hi[j].hi = H0.hi^Htable[j].hi;
140 Hi[j].lo = H0.lo^Htable[j].lo;
145 static void gcm_gmult_8bit(u64 Xi[2], const u128 Htable[256])
148 const u8 *xi = (const u8 *)Xi+15;
150 const union { long one; char little; } is_endian = {1};
152 static const size_t rem_8bit[256] = {
153 PACK(0x0000), PACK(0x01C2), PACK(0x0384), PACK(0x0246),
154 PACK(0x0708), PACK(0x06CA), PACK(0x048C), PACK(0x054E),
155 PACK(0x0E10), PACK(0x0FD2), PACK(0x0D94), PACK(0x0C56),
156 PACK(0x0918), PACK(0x08DA), PACK(0x0A9C), PACK(0x0B5E),
157 PACK(0x1C20), PACK(0x1DE2), PACK(0x1FA4), PACK(0x1E66),
158 PACK(0x1B28), PACK(0x1AEA), PACK(0x18AC), PACK(0x196E),
159 PACK(0x1230), PACK(0x13F2), PACK(0x11B4), PACK(0x1076),
160 PACK(0x1538), PACK(0x14FA), PACK(0x16BC), PACK(0x177E),
161 PACK(0x3840), PACK(0x3982), PACK(0x3BC4), PACK(0x3A06),
162 PACK(0x3F48), PACK(0x3E8A), PACK(0x3CCC), PACK(0x3D0E),
163 PACK(0x3650), PACK(0x3792), PACK(0x35D4), PACK(0x3416),
164 PACK(0x3158), PACK(0x309A), PACK(0x32DC), PACK(0x331E),
165 PACK(0x2460), PACK(0x25A2), PACK(0x27E4), PACK(0x2626),
166 PACK(0x2368), PACK(0x22AA), PACK(0x20EC), PACK(0x212E),
167 PACK(0x2A70), PACK(0x2BB2), PACK(0x29F4), PACK(0x2836),
168 PACK(0x2D78), PACK(0x2CBA), PACK(0x2EFC), PACK(0x2F3E),
169 PACK(0x7080), PACK(0x7142), PACK(0x7304), PACK(0x72C6),
170 PACK(0x7788), PACK(0x764A), PACK(0x740C), PACK(0x75CE),
171 PACK(0x7E90), PACK(0x7F52), PACK(0x7D14), PACK(0x7CD6),
172 PACK(0x7998), PACK(0x785A), PACK(0x7A1C), PACK(0x7BDE),
173 PACK(0x6CA0), PACK(0x6D62), PACK(0x6F24), PACK(0x6EE6),
174 PACK(0x6BA8), PACK(0x6A6A), PACK(0x682C), PACK(0x69EE),
175 PACK(0x62B0), PACK(0x6372), PACK(0x6134), PACK(0x60F6),
176 PACK(0x65B8), PACK(0x647A), PACK(0x663C), PACK(0x67FE),
177 PACK(0x48C0), PACK(0x4902), PACK(0x4B44), PACK(0x4A86),
178 PACK(0x4FC8), PACK(0x4E0A), PACK(0x4C4C), PACK(0x4D8E),
179 PACK(0x46D0), PACK(0x4712), PACK(0x4554), PACK(0x4496),
180 PACK(0x41D8), PACK(0x401A), PACK(0x425C), PACK(0x439E),
181 PACK(0x54E0), PACK(0x5522), PACK(0x5764), PACK(0x56A6),
182 PACK(0x53E8), PACK(0x522A), PACK(0x506C), PACK(0x51AE),
183 PACK(0x5AF0), PACK(0x5B32), PACK(0x5974), PACK(0x58B6),
184 PACK(0x5DF8), PACK(0x5C3A), PACK(0x5E7C), PACK(0x5FBE),
185 PACK(0xE100), PACK(0xE0C2), PACK(0xE284), PACK(0xE346),
186 PACK(0xE608), PACK(0xE7CA), PACK(0xE58C), PACK(0xE44E),
187 PACK(0xEF10), PACK(0xEED2), PACK(0xEC94), PACK(0xED56),
188 PACK(0xE818), PACK(0xE9DA), PACK(0xEB9C), PACK(0xEA5E),
189 PACK(0xFD20), PACK(0xFCE2), PACK(0xFEA4), PACK(0xFF66),
190 PACK(0xFA28), PACK(0xFBEA), PACK(0xF9AC), PACK(0xF86E),
191 PACK(0xF330), PACK(0xF2F2), PACK(0xF0B4), PACK(0xF176),
192 PACK(0xF438), PACK(0xF5FA), PACK(0xF7BC), PACK(0xF67E),
193 PACK(0xD940), PACK(0xD882), PACK(0xDAC4), PACK(0xDB06),
194 PACK(0xDE48), PACK(0xDF8A), PACK(0xDDCC), PACK(0xDC0E),
195 PACK(0xD750), PACK(0xD692), PACK(0xD4D4), PACK(0xD516),
196 PACK(0xD058), PACK(0xD19A), PACK(0xD3DC), PACK(0xD21E),
197 PACK(0xC560), PACK(0xC4A2), PACK(0xC6E4), PACK(0xC726),
198 PACK(0xC268), PACK(0xC3AA), PACK(0xC1EC), PACK(0xC02E),
199 PACK(0xCB70), PACK(0xCAB2), PACK(0xC8F4), PACK(0xC936),
200 PACK(0xCC78), PACK(0xCDBA), PACK(0xCFFC), PACK(0xCE3E),
201 PACK(0x9180), PACK(0x9042), PACK(0x9204), PACK(0x93C6),
202 PACK(0x9688), PACK(0x974A), PACK(0x950C), PACK(0x94CE),
203 PACK(0x9F90), PACK(0x9E52), PACK(0x9C14), PACK(0x9DD6),
204 PACK(0x9898), PACK(0x995A), PACK(0x9B1C), PACK(0x9ADE),
205 PACK(0x8DA0), PACK(0x8C62), PACK(0x8E24), PACK(0x8FE6),
206 PACK(0x8AA8), PACK(0x8B6A), PACK(0x892C), PACK(0x88EE),
207 PACK(0x83B0), PACK(0x8272), PACK(0x8034), PACK(0x81F6),
208 PACK(0x84B8), PACK(0x857A), PACK(0x873C), PACK(0x86FE),
209 PACK(0xA9C0), PACK(0xA802), PACK(0xAA44), PACK(0xAB86),
210 PACK(0xAEC8), PACK(0xAF0A), PACK(0xAD4C), PACK(0xAC8E),
211 PACK(0xA7D0), PACK(0xA612), PACK(0xA454), PACK(0xA596),
212 PACK(0xA0D8), PACK(0xA11A), PACK(0xA35C), PACK(0xA29E),
213 PACK(0xB5E0), PACK(0xB422), PACK(0xB664), PACK(0xB7A6),
214 PACK(0xB2E8), PACK(0xB32A), PACK(0xB16C), PACK(0xB0AE),
215 PACK(0xBBF0), PACK(0xBA32), PACK(0xB874), PACK(0xB9B6),
216 PACK(0xBCF8), PACK(0xBD3A), PACK(0xBF7C), PACK(0xBEBE) };
219 Z.hi ^= Htable[n].hi;
220 Z.lo ^= Htable[n].lo;
222 if ((u8 *)Xi==xi) break;
226 rem = (size_t)Z.lo&0xff;
227 Z.lo = (Z.hi<<56)|(Z.lo>>8);
229 if (sizeof(size_t)==8)
230 Z.hi ^= rem_8bit[rem];
232 Z.hi ^= (u64)rem_8bit[rem]<<32;
235 if (is_endian.little) {
237 Xi[0] = BSWAP8(Z.hi);
238 Xi[1] = BSWAP8(Z.lo);
242 v = (u32)(Z.hi>>32); PUTU32(p,v);
243 v = (u32)(Z.hi); PUTU32(p+4,v);
244 v = (u32)(Z.lo>>32); PUTU32(p+8,v);
245 v = (u32)(Z.lo); PUTU32(p+12,v);
253 #define GCM_MUL(ctx,Xi) gcm_gmult_8bit(ctx->Xi.u,ctx->Htable)
257 static void gcm_init_4bit(u128 Htable[16], u64 H[2])
260 #if defined(OPENSSL_SMALL_FOOTPRINT)
269 #if defined(OPENSSL_SMALL_FOOTPRINT)
270 for (Htable[8]=V, i=4; i>0; i>>=1) {
275 for (i=2; i<16; i<<=1) {
278 for (V=*Hi, j=1; j<i; ++j) {
279 Hi[j].hi = V.hi^Htable[j].hi;
280 Hi[j].lo = V.lo^Htable[j].lo;
291 Htable[3].hi = V.hi^Htable[2].hi, Htable[3].lo = V.lo^Htable[2].lo;
293 Htable[5].hi = V.hi^Htable[1].hi, Htable[5].lo = V.lo^Htable[1].lo;
294 Htable[6].hi = V.hi^Htable[2].hi, Htable[6].lo = V.lo^Htable[2].lo;
295 Htable[7].hi = V.hi^Htable[3].hi, Htable[7].lo = V.lo^Htable[3].lo;
297 Htable[9].hi = V.hi^Htable[1].hi, Htable[9].lo = V.lo^Htable[1].lo;
298 Htable[10].hi = V.hi^Htable[2].hi, Htable[10].lo = V.lo^Htable[2].lo;
299 Htable[11].hi = V.hi^Htable[3].hi, Htable[11].lo = V.lo^Htable[3].lo;
300 Htable[12].hi = V.hi^Htable[4].hi, Htable[12].lo = V.lo^Htable[4].lo;
301 Htable[13].hi = V.hi^Htable[5].hi, Htable[13].lo = V.lo^Htable[5].lo;
302 Htable[14].hi = V.hi^Htable[6].hi, Htable[14].lo = V.lo^Htable[6].lo;
303 Htable[15].hi = V.hi^Htable[7].hi, Htable[15].lo = V.lo^Htable[7].lo;
305 #if defined(GHASH_ASM) && (defined(__arm__) || defined(__arm))
307 * ARM assembler expects specific dword order in Htable.
311 const union { long one; char little; } is_endian = {1};
313 if (is_endian.little)
322 Htable[j].hi = V.lo<<32|V.lo>>32;
323 Htable[j].lo = V.hi<<32|V.hi>>32;
331 static const size_t rem_4bit[16] = {
332 PACK(0x0000), PACK(0x1C20), PACK(0x3840), PACK(0x2460),
333 PACK(0x7080), PACK(0x6CA0), PACK(0x48C0), PACK(0x54E0),
334 PACK(0xE100), PACK(0xFD20), PACK(0xD940), PACK(0xC560),
335 PACK(0x9180), PACK(0x8DA0), PACK(0xA9C0), PACK(0xB5E0) };
337 static void gcm_gmult_4bit(u64 Xi[2], const u128 Htable[16])
341 size_t rem, nlo, nhi;
342 const union { long one; char little; } is_endian = {1};
344 nlo = ((const u8 *)Xi)[15];
348 Z.hi = Htable[nlo].hi;
349 Z.lo = Htable[nlo].lo;
352 rem = (size_t)Z.lo&0xf;
353 Z.lo = (Z.hi<<60)|(Z.lo>>4);
355 if (sizeof(size_t)==8)
356 Z.hi ^= rem_4bit[rem];
358 Z.hi ^= (u64)rem_4bit[rem]<<32;
360 Z.hi ^= Htable[nhi].hi;
361 Z.lo ^= Htable[nhi].lo;
365 nlo = ((const u8 *)Xi)[cnt];
369 rem = (size_t)Z.lo&0xf;
370 Z.lo = (Z.hi<<60)|(Z.lo>>4);
372 if (sizeof(size_t)==8)
373 Z.hi ^= rem_4bit[rem];
375 Z.hi ^= (u64)rem_4bit[rem]<<32;
377 Z.hi ^= Htable[nlo].hi;
378 Z.lo ^= Htable[nlo].lo;
381 if (is_endian.little) {
383 Xi[0] = BSWAP8(Z.hi);
384 Xi[1] = BSWAP8(Z.lo);
388 v = (u32)(Z.hi>>32); PUTU32(p,v);
389 v = (u32)(Z.hi); PUTU32(p+4,v);
390 v = (u32)(Z.lo>>32); PUTU32(p+8,v);
391 v = (u32)(Z.lo); PUTU32(p+12,v);
400 #if !defined(OPENSSL_SMALL_FOOTPRINT)
402 * Streamed gcm_mult_4bit, see CRYPTO_gcm128_[en|de]crypt for
403 * details... Compiler-generated code doesn't seem to give any
404 * performance improvement, at least not on x86[_64]. It's here
405 * mostly as reference and a placeholder for possible future
406 * non-trivial optimization[s]...
408 static void gcm_ghash_4bit(u64 Xi[2],const u128 Htable[16],
409 const u8 *inp,size_t len)
413 size_t rem, nlo, nhi;
414 const union { long one; char little; } is_endian = {1};
419 nlo = ((const u8 *)Xi)[15];
424 Z.hi = Htable[nlo].hi;
425 Z.lo = Htable[nlo].lo;
428 rem = (size_t)Z.lo&0xf;
429 Z.lo = (Z.hi<<60)|(Z.lo>>4);
431 if (sizeof(size_t)==8)
432 Z.hi ^= rem_4bit[rem];
434 Z.hi ^= (u64)rem_4bit[rem]<<32;
436 Z.hi ^= Htable[nhi].hi;
437 Z.lo ^= Htable[nhi].lo;
441 nlo = ((const u8 *)Xi)[cnt];
446 rem = (size_t)Z.lo&0xf;
447 Z.lo = (Z.hi<<60)|(Z.lo>>4);
449 if (sizeof(size_t)==8)
450 Z.hi ^= rem_4bit[rem];
452 Z.hi ^= (u64)rem_4bit[rem]<<32;
454 Z.hi ^= Htable[nlo].hi;
455 Z.lo ^= Htable[nlo].lo;
459 * Extra 256+16 bytes per-key plus 512 bytes shared tables
460 * [should] give ~50% improvement... One could have PACK()-ed
461 * the rem_8bit even here, but the priority is to minimize
464 u128 Hshr4[16]; /* Htable shifted right by 4 bits */
465 u8 Hshl4[16]; /* Htable shifted left by 4 bits */
467 static const unsigned short rem_8bit[256] = {
468 0x0000, 0x01C2, 0x0384, 0x0246, 0x0708, 0x06CA, 0x048C, 0x054E,
469 0x0E10, 0x0FD2, 0x0D94, 0x0C56, 0x0918, 0x08DA, 0x0A9C, 0x0B5E,
470 0x1C20, 0x1DE2, 0x1FA4, 0x1E66, 0x1B28, 0x1AEA, 0x18AC, 0x196E,
471 0x1230, 0x13F2, 0x11B4, 0x1076, 0x1538, 0x14FA, 0x16BC, 0x177E,
472 0x3840, 0x3982, 0x3BC4, 0x3A06, 0x3F48, 0x3E8A, 0x3CCC, 0x3D0E,
473 0x3650, 0x3792, 0x35D4, 0x3416, 0x3158, 0x309A, 0x32DC, 0x331E,
474 0x2460, 0x25A2, 0x27E4, 0x2626, 0x2368, 0x22AA, 0x20EC, 0x212E,
475 0x2A70, 0x2BB2, 0x29F4, 0x2836, 0x2D78, 0x2CBA, 0x2EFC, 0x2F3E,
476 0x7080, 0x7142, 0x7304, 0x72C6, 0x7788, 0x764A, 0x740C, 0x75CE,
477 0x7E90, 0x7F52, 0x7D14, 0x7CD6, 0x7998, 0x785A, 0x7A1C, 0x7BDE,
478 0x6CA0, 0x6D62, 0x6F24, 0x6EE6, 0x6BA8, 0x6A6A, 0x682C, 0x69EE,
479 0x62B0, 0x6372, 0x6134, 0x60F6, 0x65B8, 0x647A, 0x663C, 0x67FE,
480 0x48C0, 0x4902, 0x4B44, 0x4A86, 0x4FC8, 0x4E0A, 0x4C4C, 0x4D8E,
481 0x46D0, 0x4712, 0x4554, 0x4496, 0x41D8, 0x401A, 0x425C, 0x439E,
482 0x54E0, 0x5522, 0x5764, 0x56A6, 0x53E8, 0x522A, 0x506C, 0x51AE,
483 0x5AF0, 0x5B32, 0x5974, 0x58B6, 0x5DF8, 0x5C3A, 0x5E7C, 0x5FBE,
484 0xE100, 0xE0C2, 0xE284, 0xE346, 0xE608, 0xE7CA, 0xE58C, 0xE44E,
485 0xEF10, 0xEED2, 0xEC94, 0xED56, 0xE818, 0xE9DA, 0xEB9C, 0xEA5E,
486 0xFD20, 0xFCE2, 0xFEA4, 0xFF66, 0xFA28, 0xFBEA, 0xF9AC, 0xF86E,
487 0xF330, 0xF2F2, 0xF0B4, 0xF176, 0xF438, 0xF5FA, 0xF7BC, 0xF67E,
488 0xD940, 0xD882, 0xDAC4, 0xDB06, 0xDE48, 0xDF8A, 0xDDCC, 0xDC0E,
489 0xD750, 0xD692, 0xD4D4, 0xD516, 0xD058, 0xD19A, 0xD3DC, 0xD21E,
490 0xC560, 0xC4A2, 0xC6E4, 0xC726, 0xC268, 0xC3AA, 0xC1EC, 0xC02E,
491 0xCB70, 0xCAB2, 0xC8F4, 0xC936, 0xCC78, 0xCDBA, 0xCFFC, 0xCE3E,
492 0x9180, 0x9042, 0x9204, 0x93C6, 0x9688, 0x974A, 0x950C, 0x94CE,
493 0x9F90, 0x9E52, 0x9C14, 0x9DD6, 0x9898, 0x995A, 0x9B1C, 0x9ADE,
494 0x8DA0, 0x8C62, 0x8E24, 0x8FE6, 0x8AA8, 0x8B6A, 0x892C, 0x88EE,
495 0x83B0, 0x8272, 0x8034, 0x81F6, 0x84B8, 0x857A, 0x873C, 0x86FE,
496 0xA9C0, 0xA802, 0xAA44, 0xAB86, 0xAEC8, 0xAF0A, 0xAD4C, 0xAC8E,
497 0xA7D0, 0xA612, 0xA454, 0xA596, 0xA0D8, 0xA11A, 0xA35C, 0xA29E,
498 0xB5E0, 0xB422, 0xB664, 0xB7A6, 0xB2E8, 0xB32A, 0xB16C, 0xB0AE,
499 0xBBF0, 0xBA32, 0xB874, 0xB9B6, 0xBCF8, 0xBD3A, 0xBF7C, 0xBEBE };
501 * This pre-processing phase slows down procedure by approximately
502 * same time as it makes each loop spin faster. In other words
503 * single block performance is approximately same as straightforward
504 * "4-bit" implementation, and then it goes only faster...
506 for (cnt=0; cnt<16; ++cnt) {
507 Z.hi = Htable[cnt].hi;
508 Z.lo = Htable[cnt].lo;
509 Hshr4[cnt].lo = (Z.hi<<60)|(Z.lo>>4);
510 Hshr4[cnt].hi = (Z.hi>>4);
511 Hshl4[cnt] = (u8)(Z.lo<<4);
515 for (Z.lo=0, Z.hi=0, cnt=15; cnt; --cnt) {
516 nlo = ((const u8 *)Xi)[cnt];
521 Z.hi ^= Htable[nlo].hi;
522 Z.lo ^= Htable[nlo].lo;
524 rem = (size_t)Z.lo&0xff;
526 Z.lo = (Z.hi<<56)|(Z.lo>>8);
529 Z.hi ^= Hshr4[nhi].hi;
530 Z.lo ^= Hshr4[nhi].lo;
531 Z.hi ^= (u64)rem_8bit[rem^Hshl4[nhi]]<<48;
534 nlo = ((const u8 *)Xi)[0];
539 Z.hi ^= Htable[nlo].hi;
540 Z.lo ^= Htable[nlo].lo;
542 rem = (size_t)Z.lo&0xf;
544 Z.lo = (Z.hi<<60)|(Z.lo>>4);
547 Z.hi ^= Htable[nhi].hi;
548 Z.lo ^= Htable[nhi].lo;
549 Z.hi ^= ((u64)rem_8bit[rem<<4])<<48;
552 if (is_endian.little) {
554 Xi[0] = BSWAP8(Z.hi);
555 Xi[1] = BSWAP8(Z.lo);
559 v = (u32)(Z.hi>>32); PUTU32(p,v);
560 v = (u32)(Z.hi); PUTU32(p+4,v);
561 v = (u32)(Z.lo>>32); PUTU32(p+8,v);
562 v = (u32)(Z.lo); PUTU32(p+12,v);
569 } while (inp+=16, len-=16);
573 void gcm_gmult_4bit(u64 Xi[2],const u128 Htable[16]);
574 void gcm_ghash_4bit(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
577 #define GCM_MUL(ctx,Xi) gcm_gmult_4bit(ctx->Xi.u,ctx->Htable)
578 #if defined(GHASH_ASM) || !defined(OPENSSL_SMALL_FOOTPRINT)
579 #define GHASH(ctx,in,len) gcm_ghash_4bit((ctx)->Xi.u,(ctx)->Htable,in,len)
580 /* GHASH_CHUNK is "stride parameter" missioned to mitigate cache
581 * trashing effect. In other words idea is to hash data while it's
582 * still in L1 cache after encryption pass... */
583 #define GHASH_CHUNK (3*1024)
586 #else /* TABLE_BITS */
588 static void gcm_gmult_1bit(u64 Xi[2],const u64 H[2])
593 const long *xi = (const long *)Xi;
594 const union { long one; char little; } is_endian = {1};
596 V.hi = H[0]; /* H is in host byte order, no byte swapping */
599 for (j=0; j<16/sizeof(long); ++j) {
600 if (is_endian.little) {
601 if (sizeof(long)==8) {
603 X = (long)(BSWAP8(xi[j]));
605 const u8 *p = (const u8 *)(xi+j);
606 X = (long)((u64)GETU32(p)<<32|GETU32(p+4));
610 const u8 *p = (const u8 *)(xi+j);
617 for (i=0; i<8*sizeof(long); ++i, X<<=1) {
618 u64 M = (u64)(X>>(8*sizeof(long)-1));
626 if (is_endian.little) {
628 Xi[0] = BSWAP8(Z.hi);
629 Xi[1] = BSWAP8(Z.lo);
633 v = (u32)(Z.hi>>32); PUTU32(p,v);
634 v = (u32)(Z.hi); PUTU32(p+4,v);
635 v = (u32)(Z.lo>>32); PUTU32(p+8,v);
636 v = (u32)(Z.lo); PUTU32(p+12,v);
644 #define GCM_MUL(ctx,Xi) gcm_gmult_1bit(ctx->Xi.u,ctx->H.u)
648 #if TABLE_BITS==4 && defined(GHASH_ASM)
649 # if !defined(I386_ONLY) && \
650 (defined(__i386) || defined(__i386__) || \
651 defined(__x86_64) || defined(__x86_64__) || \
652 defined(_M_IX86) || defined(_M_AMD64) || defined(_M_X64))
653 # define GHASH_ASM_X86_OR_64
654 # define GCM_FUNCREF_4BIT
655 extern unsigned int OPENSSL_ia32cap_P[2];
657 void gcm_init_clmul(u128 Htable[16],const u64 Xi[2]);
658 void gcm_gmult_clmul(u64 Xi[2],const u128 Htable[16]);
659 void gcm_ghash_clmul(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
661 # if defined(__i386) || defined(__i386__) || defined(_M_IX86)
662 # define GHASH_ASM_X86
663 void gcm_gmult_4bit_mmx(u64 Xi[2],const u128 Htable[16]);
664 void gcm_ghash_4bit_mmx(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
666 void gcm_gmult_4bit_x86(u64 Xi[2],const u128 Htable[16]);
667 void gcm_ghash_4bit_x86(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
669 # elif defined(__arm__) || defined(__arm)
670 # include "arm_arch.h"
672 # define GHASH_ASM_ARM
673 # define GCM_FUNCREF_4BIT
674 void gcm_gmult_neon(u64 Xi[2],const u128 Htable[16]);
675 void gcm_ghash_neon(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
677 # elif defined(__sparc__) || defined(__sparc)
678 # include "sparc_arch.h"
679 # define GHASH_ASM_SPARC
680 # define GCM_FUNCREF_4BIT
681 extern unsigned int OPENSSL_sparcv9cap_P[];
682 void gcm_init_vis3(u128 Htable[16],const u64 Xi[2]);
683 void gcm_gmult_vis3(u64 Xi[2],const u128 Htable[16]);
684 void gcm_ghash_vis3(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
688 #ifdef GCM_FUNCREF_4BIT
690 # define GCM_MUL(ctx,Xi) (*gcm_gmult_p)(ctx->Xi.u,ctx->Htable)
693 # define GHASH(ctx,in,len) (*gcm_ghash_p)(ctx->Xi.u,ctx->Htable,in,len)
697 void CRYPTO_gcm128_init(GCM128_CONTEXT *ctx,void *key,block128_f block)
699 const union { long one; char little; } is_endian = {1};
701 memset(ctx,0,sizeof(*ctx));
705 (*block)(ctx->H.c,ctx->H.c,key);
707 if (is_endian.little) {
708 /* H is stored in host byte order */
710 ctx->H.u[0] = BSWAP8(ctx->H.u[0]);
711 ctx->H.u[1] = BSWAP8(ctx->H.u[1]);
715 hi = (u64)GETU32(p) <<32|GETU32(p+4);
716 lo = (u64)GETU32(p+8)<<32|GETU32(p+12);
723 gcm_init_8bit(ctx->Htable,ctx->H.u);
725 # if defined(GHASH_ASM_X86_OR_64)
726 # if !defined(GHASH_ASM_X86) || defined(OPENSSL_IA32_SSE2)
727 if (OPENSSL_ia32cap_P[0]&(1<<24) && /* check FXSR bit */
728 OPENSSL_ia32cap_P[1]&(1<<1) ) { /* check PCLMULQDQ bit */
729 gcm_init_clmul(ctx->Htable,ctx->H.u);
730 ctx->gmult = gcm_gmult_clmul;
731 ctx->ghash = gcm_ghash_clmul;
735 gcm_init_4bit(ctx->Htable,ctx->H.u);
736 # if defined(GHASH_ASM_X86) /* x86 only */
737 # if defined(OPENSSL_IA32_SSE2)
738 if (OPENSSL_ia32cap_P[0]&(1<<25)) { /* check SSE bit */
740 if (OPENSSL_ia32cap_P[0]&(1<<23)) { /* check MMX bit */
742 ctx->gmult = gcm_gmult_4bit_mmx;
743 ctx->ghash = gcm_ghash_4bit_mmx;
745 ctx->gmult = gcm_gmult_4bit_x86;
746 ctx->ghash = gcm_ghash_4bit_x86;
749 ctx->gmult = gcm_gmult_4bit;
750 ctx->ghash = gcm_ghash_4bit;
752 # elif defined(GHASH_ASM_ARM)
753 if (OPENSSL_armcap_P & ARMV7_NEON) {
754 ctx->gmult = gcm_gmult_neon;
755 ctx->ghash = gcm_ghash_neon;
757 gcm_init_4bit(ctx->Htable,ctx->H.u);
758 ctx->gmult = gcm_gmult_4bit;
759 ctx->ghash = gcm_ghash_4bit;
761 # elif defined(GHASH_ASM_SPARC)
762 if (OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3) {
763 gcm_init_vis3(ctx->Htable,ctx->H.u);
764 ctx->gmult = gcm_gmult_vis3;
765 ctx->ghash = gcm_ghash_vis3;
767 gcm_init_4bit(ctx->Htable,ctx->H.u);
768 ctx->gmult = gcm_gmult_4bit;
769 ctx->ghash = gcm_ghash_4bit;
772 gcm_init_4bit(ctx->Htable,ctx->H.u);
777 void CRYPTO_gcm128_setiv(GCM128_CONTEXT *ctx,const unsigned char *iv,size_t len)
779 const union { long one; char little; } is_endian = {1};
781 #ifdef GCM_FUNCREF_4BIT
782 void (*gcm_gmult_p)(u64 Xi[2],const u128 Htable[16]) = ctx->gmult;
789 ctx->len.u[0] = 0; /* AAD length */
790 ctx->len.u[1] = 0; /* message length */
795 memcpy(ctx->Yi.c,iv,12);
804 for (i=0; i<16; ++i) ctx->Yi.c[i] ^= iv[i];
810 for (i=0; i<len; ++i) ctx->Yi.c[i] ^= iv[i];
814 if (is_endian.little) {
816 ctx->Yi.u[1] ^= BSWAP8(len0);
818 ctx->Yi.c[8] ^= (u8)(len0>>56);
819 ctx->Yi.c[9] ^= (u8)(len0>>48);
820 ctx->Yi.c[10] ^= (u8)(len0>>40);
821 ctx->Yi.c[11] ^= (u8)(len0>>32);
822 ctx->Yi.c[12] ^= (u8)(len0>>24);
823 ctx->Yi.c[13] ^= (u8)(len0>>16);
824 ctx->Yi.c[14] ^= (u8)(len0>>8);
825 ctx->Yi.c[15] ^= (u8)(len0);
829 ctx->Yi.u[1] ^= len0;
833 if (is_endian.little)
834 ctr = GETU32(ctx->Yi.c+12);
839 (*ctx->block)(ctx->Yi.c,ctx->EK0.c,ctx->key);
841 if (is_endian.little)
842 PUTU32(ctx->Yi.c+12,ctr);
847 int CRYPTO_gcm128_aad(GCM128_CONTEXT *ctx,const unsigned char *aad,size_t len)
851 u64 alen = ctx->len.u[0];
852 #ifdef GCM_FUNCREF_4BIT
853 void (*gcm_gmult_p)(u64 Xi[2],const u128 Htable[16]) = ctx->gmult;
855 void (*gcm_ghash_p)(u64 Xi[2],const u128 Htable[16],
856 const u8 *inp,size_t len) = ctx->ghash;
860 if (ctx->len.u[1]) return -2;
863 if (alen>(U64(1)<<61) || (sizeof(len)==8 && alen<len))
865 ctx->len.u[0] = alen;
870 ctx->Xi.c[n] ^= *(aad++);
874 if (n==0) GCM_MUL(ctx,Xi);
882 if ((i = (len&(size_t)-16))) {
889 for (i=0; i<16; ++i) ctx->Xi.c[i] ^= aad[i];
896 n = (unsigned int)len;
897 for (i=0; i<len; ++i) ctx->Xi.c[i] ^= aad[i];
904 int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx,
905 const unsigned char *in, unsigned char *out,
908 const union { long one; char little; } is_endian = {1};
911 u64 mlen = ctx->len.u[1];
912 block128_f block = ctx->block;
913 void *key = ctx->key;
914 #ifdef GCM_FUNCREF_4BIT
915 void (*gcm_gmult_p)(u64 Xi[2],const u128 Htable[16]) = ctx->gmult;
917 void (*gcm_ghash_p)(u64 Xi[2],const u128 Htable[16],
918 const u8 *inp,size_t len) = ctx->ghash;
923 n = (unsigned int)mlen%16; /* alternative to ctx->mres */
926 if (mlen>((U64(1)<<36)-32) || (sizeof(len)==8 && mlen<len))
928 ctx->len.u[1] = mlen;
931 /* First call to encrypt finalizes GHASH(AAD) */
936 if (is_endian.little)
937 ctr = GETU32(ctx->Yi.c+12);
942 #if !defined(OPENSSL_SMALL_FOOTPRINT)
943 if (16%sizeof(size_t) == 0) do { /* always true actually */
946 ctx->Xi.c[n] ^= *(out++) = *(in++)^ctx->EKi.c[n];
950 if (n==0) GCM_MUL(ctx,Xi);
956 #if defined(STRICT_ALIGNMENT)
957 if (((size_t)in|(size_t)out)%sizeof(size_t) != 0)
960 #if defined(GHASH) && defined(GHASH_CHUNK)
961 while (len>=GHASH_CHUNK) {
962 size_t j=GHASH_CHUNK;
965 size_t *out_t=(size_t *)out;
966 const size_t *in_t=(const size_t *)in;
968 (*block)(ctx->Yi.c,ctx->EKi.c,key);
970 if (is_endian.little)
971 PUTU32(ctx->Yi.c+12,ctr);
974 for (i=0; i<16/sizeof(size_t); ++i)
975 out_t[i] = in_t[i] ^ ctx->EKi.t[i];
980 GHASH(ctx,out-GHASH_CHUNK,GHASH_CHUNK);
983 if ((i = (len&(size_t)-16))) {
987 size_t *out_t=(size_t *)out;
988 const size_t *in_t=(const size_t *)in;
990 (*block)(ctx->Yi.c,ctx->EKi.c,key);
992 if (is_endian.little)
993 PUTU32(ctx->Yi.c+12,ctr);
996 for (i=0; i<16/sizeof(size_t); ++i)
997 out_t[i] = in_t[i] ^ ctx->EKi.t[i];
1006 size_t *out_t=(size_t *)out;
1007 const size_t *in_t=(const size_t *)in;
1009 (*block)(ctx->Yi.c,ctx->EKi.c,key);
1011 if (is_endian.little)
1012 PUTU32(ctx->Yi.c+12,ctr);
1015 for (i=0; i<16/sizeof(size_t); ++i)
1017 out_t[i] = in_t[i]^ctx->EKi.t[i];
1025 (*block)(ctx->Yi.c,ctx->EKi.c,key);
1027 if (is_endian.little)
1028 PUTU32(ctx->Yi.c+12,ctr);
1032 ctx->Xi.c[n] ^= out[n] = in[n]^ctx->EKi.c[n];
1041 for (i=0;i<len;++i) {
1043 (*block)(ctx->Yi.c,ctx->EKi.c,key);
1045 if (is_endian.little)
1046 PUTU32(ctx->Yi.c+12,ctr);
1050 ctx->Xi.c[n] ^= out[i] = in[i]^ctx->EKi.c[n];
1060 int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx,
1061 const unsigned char *in, unsigned char *out,
1064 const union { long one; char little; } is_endian = {1};
1065 unsigned int n, ctr;
1067 u64 mlen = ctx->len.u[1];
1068 block128_f block = ctx->block;
1069 void *key = ctx->key;
1070 #ifdef GCM_FUNCREF_4BIT
1071 void (*gcm_gmult_p)(u64 Xi[2],const u128 Htable[16]) = ctx->gmult;
1073 void (*gcm_ghash_p)(u64 Xi[2],const u128 Htable[16],
1074 const u8 *inp,size_t len) = ctx->ghash;
1079 if (mlen>((U64(1)<<36)-32) || (sizeof(len)==8 && mlen<len))
1081 ctx->len.u[1] = mlen;
1084 /* First call to decrypt finalizes GHASH(AAD) */
1089 if (is_endian.little)
1090 ctr = GETU32(ctx->Yi.c+12);
1095 #if !defined(OPENSSL_SMALL_FOOTPRINT)
1096 if (16%sizeof(size_t) == 0) do { /* always true actually */
1100 *(out++) = c^ctx->EKi.c[n];
1105 if (n==0) GCM_MUL (ctx,Xi);
1111 #if defined(STRICT_ALIGNMENT)
1112 if (((size_t)in|(size_t)out)%sizeof(size_t) != 0)
1115 #if defined(GHASH) && defined(GHASH_CHUNK)
1116 while (len>=GHASH_CHUNK) {
1117 size_t j=GHASH_CHUNK;
1119 GHASH(ctx,in,GHASH_CHUNK);
1121 size_t *out_t=(size_t *)out;
1122 const size_t *in_t=(const size_t *)in;
1124 (*block)(ctx->Yi.c,ctx->EKi.c,key);
1126 if (is_endian.little)
1127 PUTU32(ctx->Yi.c+12,ctr);
1130 for (i=0; i<16/sizeof(size_t); ++i)
1131 out_t[i] = in_t[i]^ctx->EKi.t[i];
1138 if ((i = (len&(size_t)-16))) {
1141 size_t *out_t=(size_t *)out;
1142 const size_t *in_t=(const size_t *)in;
1144 (*block)(ctx->Yi.c,ctx->EKi.c,key);
1146 if (is_endian.little)
1147 PUTU32(ctx->Yi.c+12,ctr);
1150 for (i=0; i<16/sizeof(size_t); ++i)
1151 out_t[i] = in_t[i]^ctx->EKi.t[i];
1159 size_t *out_t=(size_t *)out;
1160 const size_t *in_t=(const size_t *)in;
1162 (*block)(ctx->Yi.c,ctx->EKi.c,key);
1164 if (is_endian.little)
1165 PUTU32(ctx->Yi.c+12,ctr);
1168 for (i=0; i<16/sizeof(size_t); ++i) {
1170 out[i] = c^ctx->EKi.t[i];
1180 (*block)(ctx->Yi.c,ctx->EKi.c,key);
1182 if (is_endian.little)
1183 PUTU32(ctx->Yi.c+12,ctr);
1189 out[n] = c^ctx->EKi.c[n];
1198 for (i=0;i<len;++i) {
1201 (*block)(ctx->Yi.c,ctx->EKi.c,key);
1203 if (is_endian.little)
1204 PUTU32(ctx->Yi.c+12,ctr);
1209 out[i] = c^ctx->EKi.c[n];
1220 int CRYPTO_gcm128_encrypt_ctr32(GCM128_CONTEXT *ctx,
1221 const unsigned char *in, unsigned char *out,
1222 size_t len, ctr128_f stream)
1224 const union { long one; char little; } is_endian = {1};
1225 unsigned int n, ctr;
1227 u64 mlen = ctx->len.u[1];
1228 void *key = ctx->key;
1229 #ifdef GCM_FUNCREF_4BIT
1230 void (*gcm_gmult_p)(u64 Xi[2],const u128 Htable[16]) = ctx->gmult;
1232 void (*gcm_ghash_p)(u64 Xi[2],const u128 Htable[16],
1233 const u8 *inp,size_t len) = ctx->ghash;
1238 if (mlen>((U64(1)<<36)-32) || (sizeof(len)==8 && mlen<len))
1240 ctx->len.u[1] = mlen;
1243 /* First call to encrypt finalizes GHASH(AAD) */
1248 if (is_endian.little)
1249 ctr = GETU32(ctx->Yi.c+12);
1256 ctx->Xi.c[n] ^= *(out++) = *(in++)^ctx->EKi.c[n];
1260 if (n==0) GCM_MUL(ctx,Xi);
1266 #if defined(GHASH) && !defined(OPENSSL_SMALL_FOOTPRINT)
1267 while (len>=GHASH_CHUNK) {
1268 (*stream)(in,out,GHASH_CHUNK/16,key,ctx->Yi.c);
1269 ctr += GHASH_CHUNK/16;
1270 if (is_endian.little)
1271 PUTU32(ctx->Yi.c+12,ctr);
1274 GHASH(ctx,out,GHASH_CHUNK);
1280 if ((i = (len&(size_t)-16))) {
1283 (*stream)(in,out,j,key,ctx->Yi.c);
1284 ctr += (unsigned int)j;
1285 if (is_endian.little)
1286 PUTU32(ctx->Yi.c+12,ctr);
1296 for (i=0;i<16;++i) ctx->Xi.c[i] ^= out[i];
1303 (*ctx->block)(ctx->Yi.c,ctx->EKi.c,key);
1305 if (is_endian.little)
1306 PUTU32(ctx->Yi.c+12,ctr);
1310 ctx->Xi.c[n] ^= out[n] = in[n]^ctx->EKi.c[n];
1319 int CRYPTO_gcm128_decrypt_ctr32(GCM128_CONTEXT *ctx,
1320 const unsigned char *in, unsigned char *out,
1321 size_t len,ctr128_f stream)
1323 const union { long one; char little; } is_endian = {1};
1324 unsigned int n, ctr;
1326 u64 mlen = ctx->len.u[1];
1327 void *key = ctx->key;
1328 #ifdef GCM_FUNCREF_4BIT
1329 void (*gcm_gmult_p)(u64 Xi[2],const u128 Htable[16]) = ctx->gmult;
1331 void (*gcm_ghash_p)(u64 Xi[2],const u128 Htable[16],
1332 const u8 *inp,size_t len) = ctx->ghash;
1337 if (mlen>((U64(1)<<36)-32) || (sizeof(len)==8 && mlen<len))
1339 ctx->len.u[1] = mlen;
1342 /* First call to decrypt finalizes GHASH(AAD) */
1347 if (is_endian.little)
1348 ctr = GETU32(ctx->Yi.c+12);
1356 *(out++) = c^ctx->EKi.c[n];
1361 if (n==0) GCM_MUL (ctx,Xi);
1367 #if defined(GHASH) && !defined(OPENSSL_SMALL_FOOTPRINT)
1368 while (len>=GHASH_CHUNK) {
1369 GHASH(ctx,in,GHASH_CHUNK);
1370 (*stream)(in,out,GHASH_CHUNK/16,key,ctx->Yi.c);
1371 ctr += GHASH_CHUNK/16;
1372 if (is_endian.little)
1373 PUTU32(ctx->Yi.c+12,ctr);
1381 if ((i = (len&(size_t)-16))) {
1389 for (k=0;k<16;++k) ctx->Xi.c[k] ^= in[k];
1396 (*stream)(in,out,j,key,ctx->Yi.c);
1397 ctr += (unsigned int)j;
1398 if (is_endian.little)
1399 PUTU32(ctx->Yi.c+12,ctr);
1407 (*ctx->block)(ctx->Yi.c,ctx->EKi.c,key);
1409 if (is_endian.little)
1410 PUTU32(ctx->Yi.c+12,ctr);
1416 out[n] = c^ctx->EKi.c[n];
1425 int CRYPTO_gcm128_finish(GCM128_CONTEXT *ctx,const unsigned char *tag,
1428 const union { long one; char little; } is_endian = {1};
1429 u64 alen = ctx->len.u[0]<<3;
1430 u64 clen = ctx->len.u[1]<<3;
1431 #ifdef GCM_FUNCREF_4BIT
1432 void (*gcm_gmult_p)(u64 Xi[2],const u128 Htable[16]) = ctx->gmult;
1435 if (ctx->mres || ctx->ares)
1438 if (is_endian.little) {
1440 alen = BSWAP8(alen);
1441 clen = BSWAP8(clen);
1445 ctx->len.u[0] = alen;
1446 ctx->len.u[1] = clen;
1448 alen = (u64)GETU32(p) <<32|GETU32(p+4);
1449 clen = (u64)GETU32(p+8)<<32|GETU32(p+12);
1453 ctx->Xi.u[0] ^= alen;
1454 ctx->Xi.u[1] ^= clen;
1457 ctx->Xi.u[0] ^= ctx->EK0.u[0];
1458 ctx->Xi.u[1] ^= ctx->EK0.u[1];
1460 if (tag && len<=sizeof(ctx->Xi))
1461 return memcmp(ctx->Xi.c,tag,len);
1466 void CRYPTO_gcm128_tag(GCM128_CONTEXT *ctx, unsigned char *tag, size_t len)
1468 CRYPTO_gcm128_finish(ctx, NULL, 0);
1469 memcpy(tag, ctx->Xi.c, len<=sizeof(ctx->Xi.c)?len:sizeof(ctx->Xi.c));
1472 GCM128_CONTEXT *CRYPTO_gcm128_new(void *key, block128_f block)
1474 GCM128_CONTEXT *ret;
1476 if ((ret = (GCM128_CONTEXT *)OPENSSL_malloc(sizeof(GCM128_CONTEXT))))
1477 CRYPTO_gcm128_init(ret,key,block);
1482 void CRYPTO_gcm128_release(GCM128_CONTEXT *ctx)
1485 OPENSSL_cleanse(ctx,sizeof(*ctx));
1490 #if defined(SELFTEST)
1492 #include <openssl/aes.h>
1495 static const u8 K1[16],
1500 T1[]= {0x58,0xe2,0xfc,0xce,0xfa,0x7e,0x30,0x61,0x36,0x7f,0x1d,0x57,0xa4,0xe7,0x45,0x5a};
1506 static const u8 P2[16],
1507 C2[]= {0x03,0x88,0xda,0xce,0x60,0xb6,0xa3,0x92,0xf3,0x28,0xc2,0xb9,0x71,0xb2,0xfe,0x78},
1508 T2[]= {0xab,0x6e,0x47,0xd4,0x2c,0xec,0x13,0xbd,0xf5,0x3a,0x67,0xb2,0x12,0x57,0xbd,0xdf};
1512 static const u8 K3[]= {0xfe,0xff,0xe9,0x92,0x86,0x65,0x73,0x1c,0x6d,0x6a,0x8f,0x94,0x67,0x30,0x83,0x08},
1513 P3[]= {0xd9,0x31,0x32,0x25,0xf8,0x84,0x06,0xe5,0xa5,0x59,0x09,0xc5,0xaf,0xf5,0x26,0x9a,
1514 0x86,0xa7,0xa9,0x53,0x15,0x34,0xf7,0xda,0x2e,0x4c,0x30,0x3d,0x8a,0x31,0x8a,0x72,
1515 0x1c,0x3c,0x0c,0x95,0x95,0x68,0x09,0x53,0x2f,0xcf,0x0e,0x24,0x49,0xa6,0xb5,0x25,
1516 0xb1,0x6a,0xed,0xf5,0xaa,0x0d,0xe6,0x57,0xba,0x63,0x7b,0x39,0x1a,0xaf,0xd2,0x55},
1517 IV3[]= {0xca,0xfe,0xba,0xbe,0xfa,0xce,0xdb,0xad,0xde,0xca,0xf8,0x88},
1518 C3[]= {0x42,0x83,0x1e,0xc2,0x21,0x77,0x74,0x24,0x4b,0x72,0x21,0xb7,0x84,0xd0,0xd4,0x9c,
1519 0xe3,0xaa,0x21,0x2f,0x2c,0x02,0xa4,0xe0,0x35,0xc1,0x7e,0x23,0x29,0xac,0xa1,0x2e,
1520 0x21,0xd5,0x14,0xb2,0x54,0x66,0x93,0x1c,0x7d,0x8f,0x6a,0x5a,0xac,0x84,0xaa,0x05,
1521 0x1b,0xa3,0x0b,0x39,0x6a,0x0a,0xac,0x97,0x3d,0x58,0xe0,0x91,0x47,0x3f,0x59,0x85},
1522 T3[]= {0x4d,0x5c,0x2a,0xf3,0x27,0xcd,0x64,0xa6,0x2c,0xf3,0x5a,0xbd,0x2b,0xa6,0xfa,0xb4};
1527 static const u8 P4[]= {0xd9,0x31,0x32,0x25,0xf8,0x84,0x06,0xe5,0xa5,0x59,0x09,0xc5,0xaf,0xf5,0x26,0x9a,
1528 0x86,0xa7,0xa9,0x53,0x15,0x34,0xf7,0xda,0x2e,0x4c,0x30,0x3d,0x8a,0x31,0x8a,0x72,
1529 0x1c,0x3c,0x0c,0x95,0x95,0x68,0x09,0x53,0x2f,0xcf,0x0e,0x24,0x49,0xa6,0xb5,0x25,
1530 0xb1,0x6a,0xed,0xf5,0xaa,0x0d,0xe6,0x57,0xba,0x63,0x7b,0x39},
1531 A4[]= {0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,
1532 0xab,0xad,0xda,0xd2},
1533 C4[]= {0x42,0x83,0x1e,0xc2,0x21,0x77,0x74,0x24,0x4b,0x72,0x21,0xb7,0x84,0xd0,0xd4,0x9c,
1534 0xe3,0xaa,0x21,0x2f,0x2c,0x02,0xa4,0xe0,0x35,0xc1,0x7e,0x23,0x29,0xac,0xa1,0x2e,
1535 0x21,0xd5,0x14,0xb2,0x54,0x66,0x93,0x1c,0x7d,0x8f,0x6a,0x5a,0xac,0x84,0xaa,0x05,
1536 0x1b,0xa3,0x0b,0x39,0x6a,0x0a,0xac,0x97,0x3d,0x58,0xe0,0x91},
1537 T4[]= {0x5b,0xc9,0x4f,0xbc,0x32,0x21,0xa5,0xdb,0x94,0xfa,0xe9,0x5a,0xe7,0x12,0x1a,0x47};
1543 static const u8 IV5[]= {0xca,0xfe,0xba,0xbe,0xfa,0xce,0xdb,0xad},
1544 C5[]= {0x61,0x35,0x3b,0x4c,0x28,0x06,0x93,0x4a,0x77,0x7f,0xf5,0x1f,0xa2,0x2a,0x47,0x55,
1545 0x69,0x9b,0x2a,0x71,0x4f,0xcd,0xc6,0xf8,0x37,0x66,0xe5,0xf9,0x7b,0x6c,0x74,0x23,
1546 0x73,0x80,0x69,0x00,0xe4,0x9f,0x24,0xb2,0x2b,0x09,0x75,0x44,0xd4,0x89,0x6b,0x42,
1547 0x49,0x89,0xb5,0xe1,0xeb,0xac,0x0f,0x07,0xc2,0x3f,0x45,0x98},
1548 T5[]= {0x36,0x12,0xd2,0xe7,0x9e,0x3b,0x07,0x85,0x56,0x1b,0xe1,0x4a,0xac,0xa2,0xfc,0xcb};
1554 static const u8 IV6[]= {0x93,0x13,0x22,0x5d,0xf8,0x84,0x06,0xe5,0x55,0x90,0x9c,0x5a,0xff,0x52,0x69,0xaa,
1555 0x6a,0x7a,0x95,0x38,0x53,0x4f,0x7d,0xa1,0xe4,0xc3,0x03,0xd2,0xa3,0x18,0xa7,0x28,
1556 0xc3,0xc0,0xc9,0x51,0x56,0x80,0x95,0x39,0xfc,0xf0,0xe2,0x42,0x9a,0x6b,0x52,0x54,
1557 0x16,0xae,0xdb,0xf5,0xa0,0xde,0x6a,0x57,0xa6,0x37,0xb3,0x9b},
1558 C6[]= {0x8c,0xe2,0x49,0x98,0x62,0x56,0x15,0xb6,0x03,0xa0,0x33,0xac,0xa1,0x3f,0xb8,0x94,
1559 0xbe,0x91,0x12,0xa5,0xc3,0xa2,0x11,0xa8,0xba,0x26,0x2a,0x3c,0xca,0x7e,0x2c,0xa7,
1560 0x01,0xe4,0xa9,0xa4,0xfb,0xa4,0x3c,0x90,0xcc,0xdc,0xb2,0x81,0xd4,0x8c,0x7c,0x6f,
1561 0xd6,0x28,0x75,0xd2,0xac,0xa4,0x17,0x03,0x4c,0x34,0xae,0xe5},
1562 T6[]= {0x61,0x9c,0xc5,0xae,0xff,0xfe,0x0b,0xfa,0x46,0x2a,0xf4,0x3c,0x16,0x99,0xd0,0x50};
1565 static const u8 K7[24],
1570 T7[]= {0xcd,0x33,0xb2,0x8a,0xc7,0x73,0xf7,0x4b,0xa0,0x0e,0xd1,0xf3,0x12,0x57,0x24,0x35};
1576 static const u8 P8[16],
1577 C8[]= {0x98,0xe7,0x24,0x7c,0x07,0xf0,0xfe,0x41,0x1c,0x26,0x7e,0x43,0x84,0xb0,0xf6,0x00},
1578 T8[]= {0x2f,0xf5,0x8d,0x80,0x03,0x39,0x27,0xab,0x8e,0xf4,0xd4,0x58,0x75,0x14,0xf0,0xfb};
1582 static const u8 K9[]= {0xfe,0xff,0xe9,0x92,0x86,0x65,0x73,0x1c,0x6d,0x6a,0x8f,0x94,0x67,0x30,0x83,0x08,
1583 0xfe,0xff,0xe9,0x92,0x86,0x65,0x73,0x1c},
1584 P9[]= {0xd9,0x31,0x32,0x25,0xf8,0x84,0x06,0xe5,0xa5,0x59,0x09,0xc5,0xaf,0xf5,0x26,0x9a,
1585 0x86,0xa7,0xa9,0x53,0x15,0x34,0xf7,0xda,0x2e,0x4c,0x30,0x3d,0x8a,0x31,0x8a,0x72,
1586 0x1c,0x3c,0x0c,0x95,0x95,0x68,0x09,0x53,0x2f,0xcf,0x0e,0x24,0x49,0xa6,0xb5,0x25,
1587 0xb1,0x6a,0xed,0xf5,0xaa,0x0d,0xe6,0x57,0xba,0x63,0x7b,0x39,0x1a,0xaf,0xd2,0x55},
1588 IV9[]= {0xca,0xfe,0xba,0xbe,0xfa,0xce,0xdb,0xad,0xde,0xca,0xf8,0x88},
1589 C9[]= {0x39,0x80,0xca,0x0b,0x3c,0x00,0xe8,0x41,0xeb,0x06,0xfa,0xc4,0x87,0x2a,0x27,0x57,
1590 0x85,0x9e,0x1c,0xea,0xa6,0xef,0xd9,0x84,0x62,0x85,0x93,0xb4,0x0c,0xa1,0xe1,0x9c,
1591 0x7d,0x77,0x3d,0x00,0xc1,0x44,0xc5,0x25,0xac,0x61,0x9d,0x18,0xc8,0x4a,0x3f,0x47,
1592 0x18,0xe2,0x44,0x8b,0x2f,0xe3,0x24,0xd9,0xcc,0xda,0x27,0x10,0xac,0xad,0xe2,0x56},
1593 T9[]= {0x99,0x24,0xa7,0xc8,0x58,0x73,0x36,0xbf,0xb1,0x18,0x02,0x4d,0xb8,0x67,0x4a,0x14};
1598 static const u8 P10[]= {0xd9,0x31,0x32,0x25,0xf8,0x84,0x06,0xe5,0xa5,0x59,0x09,0xc5,0xaf,0xf5,0x26,0x9a,
1599 0x86,0xa7,0xa9,0x53,0x15,0x34,0xf7,0xda,0x2e,0x4c,0x30,0x3d,0x8a,0x31,0x8a,0x72,
1600 0x1c,0x3c,0x0c,0x95,0x95,0x68,0x09,0x53,0x2f,0xcf,0x0e,0x24,0x49,0xa6,0xb5,0x25,
1601 0xb1,0x6a,0xed,0xf5,0xaa,0x0d,0xe6,0x57,0xba,0x63,0x7b,0x39},
1602 A10[]= {0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,
1603 0xab,0xad,0xda,0xd2},
1604 C10[]= {0x39,0x80,0xca,0x0b,0x3c,0x00,0xe8,0x41,0xeb,0x06,0xfa,0xc4,0x87,0x2a,0x27,0x57,
1605 0x85,0x9e,0x1c,0xea,0xa6,0xef,0xd9,0x84,0x62,0x85,0x93,0xb4,0x0c,0xa1,0xe1,0x9c,
1606 0x7d,0x77,0x3d,0x00,0xc1,0x44,0xc5,0x25,0xac,0x61,0x9d,0x18,0xc8,0x4a,0x3f,0x47,
1607 0x18,0xe2,0x44,0x8b,0x2f,0xe3,0x24,0xd9,0xcc,0xda,0x27,0x10},
1608 T10[]= {0x25,0x19,0x49,0x8e,0x80,0xf1,0x47,0x8f,0x37,0xba,0x55,0xbd,0x6d,0x27,0x61,0x8c};
1614 static const u8 IV11[]={0xca,0xfe,0xba,0xbe,0xfa,0xce,0xdb,0xad},
1615 C11[]= {0x0f,0x10,0xf5,0x99,0xae,0x14,0xa1,0x54,0xed,0x24,0xb3,0x6e,0x25,0x32,0x4d,0xb8,
1616 0xc5,0x66,0x63,0x2e,0xf2,0xbb,0xb3,0x4f,0x83,0x47,0x28,0x0f,0xc4,0x50,0x70,0x57,
1617 0xfd,0xdc,0x29,0xdf,0x9a,0x47,0x1f,0x75,0xc6,0x65,0x41,0xd4,0xd4,0xda,0xd1,0xc9,
1618 0xe9,0x3a,0x19,0xa5,0x8e,0x8b,0x47,0x3f,0xa0,0xf0,0x62,0xf7},
1619 T11[]= {0x65,0xdc,0xc5,0x7f,0xcf,0x62,0x3a,0x24,0x09,0x4f,0xcc,0xa4,0x0d,0x35,0x33,0xf8};
1625 static const u8 IV12[]={0x93,0x13,0x22,0x5d,0xf8,0x84,0x06,0xe5,0x55,0x90,0x9c,0x5a,0xff,0x52,0x69,0xaa,
1626 0x6a,0x7a,0x95,0x38,0x53,0x4f,0x7d,0xa1,0xe4,0xc3,0x03,0xd2,0xa3,0x18,0xa7,0x28,
1627 0xc3,0xc0,0xc9,0x51,0x56,0x80,0x95,0x39,0xfc,0xf0,0xe2,0x42,0x9a,0x6b,0x52,0x54,
1628 0x16,0xae,0xdb,0xf5,0xa0,0xde,0x6a,0x57,0xa6,0x37,0xb3,0x9b},
1629 C12[]= {0xd2,0x7e,0x88,0x68,0x1c,0xe3,0x24,0x3c,0x48,0x30,0x16,0x5a,0x8f,0xdc,0xf9,0xff,
1630 0x1d,0xe9,0xa1,0xd8,0xe6,0xb4,0x47,0xef,0x6e,0xf7,0xb7,0x98,0x28,0x66,0x6e,0x45,
1631 0x81,0xe7,0x90,0x12,0xaf,0x34,0xdd,0xd9,0xe2,0xf0,0x37,0x58,0x9b,0x29,0x2d,0xb3,
1632 0xe6,0x7c,0x03,0x67,0x45,0xfa,0x22,0xe7,0xe9,0xb7,0x37,0x3b},
1633 T12[]= {0xdc,0xf5,0x66,0xff,0x29,0x1c,0x25,0xbb,0xb8,0x56,0x8f,0xc3,0xd3,0x76,0xa6,0xd9};
1636 static const u8 K13[32],
1641 T13[]={0x53,0x0f,0x8a,0xfb,0xc7,0x45,0x36,0xb9,0xa9,0x63,0xb4,0xf1,0xc4,0xcb,0x73,0x8b};
1646 static const u8 P14[16],
1648 C14[]= {0xce,0xa7,0x40,0x3d,0x4d,0x60,0x6b,0x6e,0x07,0x4e,0xc5,0xd3,0xba,0xf3,0x9d,0x18},
1649 T14[]= {0xd0,0xd1,0xc8,0xa7,0x99,0x99,0x6b,0xf0,0x26,0x5b,0x98,0xb5,0xd4,0x8a,0xb9,0x19};
1653 static const u8 K15[]= {0xfe,0xff,0xe9,0x92,0x86,0x65,0x73,0x1c,0x6d,0x6a,0x8f,0x94,0x67,0x30,0x83,0x08,
1654 0xfe,0xff,0xe9,0x92,0x86,0x65,0x73,0x1c,0x6d,0x6a,0x8f,0x94,0x67,0x30,0x83,0x08},
1655 P15[]= {0xd9,0x31,0x32,0x25,0xf8,0x84,0x06,0xe5,0xa5,0x59,0x09,0xc5,0xaf,0xf5,0x26,0x9a,
1656 0x86,0xa7,0xa9,0x53,0x15,0x34,0xf7,0xda,0x2e,0x4c,0x30,0x3d,0x8a,0x31,0x8a,0x72,
1657 0x1c,0x3c,0x0c,0x95,0x95,0x68,0x09,0x53,0x2f,0xcf,0x0e,0x24,0x49,0xa6,0xb5,0x25,
1658 0xb1,0x6a,0xed,0xf5,0xaa,0x0d,0xe6,0x57,0xba,0x63,0x7b,0x39,0x1a,0xaf,0xd2,0x55},
1659 IV15[]={0xca,0xfe,0xba,0xbe,0xfa,0xce,0xdb,0xad,0xde,0xca,0xf8,0x88},
1660 C15[]= {0x52,0x2d,0xc1,0xf0,0x99,0x56,0x7d,0x07,0xf4,0x7f,0x37,0xa3,0x2a,0x84,0x42,0x7d,
1661 0x64,0x3a,0x8c,0xdc,0xbf,0xe5,0xc0,0xc9,0x75,0x98,0xa2,0xbd,0x25,0x55,0xd1,0xaa,
1662 0x8c,0xb0,0x8e,0x48,0x59,0x0d,0xbb,0x3d,0xa7,0xb0,0x8b,0x10,0x56,0x82,0x88,0x38,
1663 0xc5,0xf6,0x1e,0x63,0x93,0xba,0x7a,0x0a,0xbc,0xc9,0xf6,0x62,0x89,0x80,0x15,0xad},
1664 T15[]= {0xb0,0x94,0xda,0xc5,0xd9,0x34,0x71,0xbd,0xec,0x1a,0x50,0x22,0x70,0xe3,0xcc,0x6c};
1669 static const u8 P16[]= {0xd9,0x31,0x32,0x25,0xf8,0x84,0x06,0xe5,0xa5,0x59,0x09,0xc5,0xaf,0xf5,0x26,0x9a,
1670 0x86,0xa7,0xa9,0x53,0x15,0x34,0xf7,0xda,0x2e,0x4c,0x30,0x3d,0x8a,0x31,0x8a,0x72,
1671 0x1c,0x3c,0x0c,0x95,0x95,0x68,0x09,0x53,0x2f,0xcf,0x0e,0x24,0x49,0xa6,0xb5,0x25,
1672 0xb1,0x6a,0xed,0xf5,0xaa,0x0d,0xe6,0x57,0xba,0x63,0x7b,0x39},
1673 A16[]= {0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,
1674 0xab,0xad,0xda,0xd2},
1675 C16[]= {0x52,0x2d,0xc1,0xf0,0x99,0x56,0x7d,0x07,0xf4,0x7f,0x37,0xa3,0x2a,0x84,0x42,0x7d,
1676 0x64,0x3a,0x8c,0xdc,0xbf,0xe5,0xc0,0xc9,0x75,0x98,0xa2,0xbd,0x25,0x55,0xd1,0xaa,
1677 0x8c,0xb0,0x8e,0x48,0x59,0x0d,0xbb,0x3d,0xa7,0xb0,0x8b,0x10,0x56,0x82,0x88,0x38,
1678 0xc5,0xf6,0x1e,0x63,0x93,0xba,0x7a,0x0a,0xbc,0xc9,0xf6,0x62},
1679 T16[]= {0x76,0xfc,0x6e,0xce,0x0f,0x4e,0x17,0x68,0xcd,0xdf,0x88,0x53,0xbb,0x2d,0x55,0x1b};
1685 static const u8 IV17[]={0xca,0xfe,0xba,0xbe,0xfa,0xce,0xdb,0xad},
1686 C17[]= {0xc3,0x76,0x2d,0xf1,0xca,0x78,0x7d,0x32,0xae,0x47,0xc1,0x3b,0xf1,0x98,0x44,0xcb,
1687 0xaf,0x1a,0xe1,0x4d,0x0b,0x97,0x6a,0xfa,0xc5,0x2f,0xf7,0xd7,0x9b,0xba,0x9d,0xe0,
1688 0xfe,0xb5,0x82,0xd3,0x39,0x34,0xa4,0xf0,0x95,0x4c,0xc2,0x36,0x3b,0xc7,0x3f,0x78,
1689 0x62,0xac,0x43,0x0e,0x64,0xab,0xe4,0x99,0xf4,0x7c,0x9b,0x1f},
1690 T17[]= {0x3a,0x33,0x7d,0xbf,0x46,0xa7,0x92,0xc4,0x5e,0x45,0x49,0x13,0xfe,0x2e,0xa8,0xf2};
1696 static const u8 IV18[]={0x93,0x13,0x22,0x5d,0xf8,0x84,0x06,0xe5,0x55,0x90,0x9c,0x5a,0xff,0x52,0x69,0xaa,
1697 0x6a,0x7a,0x95,0x38,0x53,0x4f,0x7d,0xa1,0xe4,0xc3,0x03,0xd2,0xa3,0x18,0xa7,0x28,
1698 0xc3,0xc0,0xc9,0x51,0x56,0x80,0x95,0x39,0xfc,0xf0,0xe2,0x42,0x9a,0x6b,0x52,0x54,
1699 0x16,0xae,0xdb,0xf5,0xa0,0xde,0x6a,0x57,0xa6,0x37,0xb3,0x9b},
1700 C18[]= {0x5a,0x8d,0xef,0x2f,0x0c,0x9e,0x53,0xf1,0xf7,0x5d,0x78,0x53,0x65,0x9e,0x2a,0x20,
1701 0xee,0xb2,0xb2,0x2a,0xaf,0xde,0x64,0x19,0xa0,0x58,0xab,0x4f,0x6f,0x74,0x6b,0xf4,
1702 0x0f,0xc0,0xc3,0xb7,0x80,0xf2,0x44,0x45,0x2d,0xa3,0xeb,0xf1,0xc5,0xd8,0x2c,0xde,
1703 0xa2,0x41,0x89,0x97,0x20,0x0e,0xf8,0x2e,0x44,0xae,0x7e,0x3f},
1704 T18[]= {0xa4,0x4a,0x82,0x66,0xee,0x1c,0x8e,0xb0,0xc8,0xb5,0xd4,0xcf,0x5a,0xe9,0xf1,0x9a};
1706 #define TEST_CASE(n) do { \
1707 u8 out[sizeof(P##n)]; \
1708 AES_set_encrypt_key(K##n,sizeof(K##n)*8,&key); \
1709 CRYPTO_gcm128_init(&ctx,&key,(block128_f)AES_encrypt); \
1710 CRYPTO_gcm128_setiv(&ctx,IV##n,sizeof(IV##n)); \
1711 memset(out,0,sizeof(out)); \
1712 if (A##n) CRYPTO_gcm128_aad(&ctx,A##n,sizeof(A##n)); \
1713 if (P##n) CRYPTO_gcm128_encrypt(&ctx,P##n,out,sizeof(out)); \
1714 if (CRYPTO_gcm128_finish(&ctx,T##n,16) || \
1715 (C##n && memcmp(out,C##n,sizeof(out)))) \
1716 ret++, printf ("encrypt test#%d failed.\n",n); \
1717 CRYPTO_gcm128_setiv(&ctx,IV##n,sizeof(IV##n)); \
1718 memset(out,0,sizeof(out)); \
1719 if (A##n) CRYPTO_gcm128_aad(&ctx,A##n,sizeof(A##n)); \
1720 if (C##n) CRYPTO_gcm128_decrypt(&ctx,C##n,out,sizeof(out)); \
1721 if (CRYPTO_gcm128_finish(&ctx,T##n,16) || \
1722 (P##n && memcmp(out,P##n,sizeof(out)))) \
1723 ret++, printf ("decrypt test#%d failed.\n",n); \
1751 #ifdef OPENSSL_CPUID_OBJ
1753 size_t start,stop,gcm_t,ctr_t,OPENSSL_rdtsc();
1754 union { u64 u; u8 c[1024]; } buf;
1757 AES_set_encrypt_key(K1,sizeof(K1)*8,&key);
1758 CRYPTO_gcm128_init(&ctx,&key,(block128_f)AES_encrypt);
1759 CRYPTO_gcm128_setiv(&ctx,IV1,sizeof(IV1));
1761 CRYPTO_gcm128_encrypt(&ctx,buf.c,buf.c,sizeof(buf));
1762 start = OPENSSL_rdtsc();
1763 CRYPTO_gcm128_encrypt(&ctx,buf.c,buf.c,sizeof(buf));
1764 gcm_t = OPENSSL_rdtsc() - start;
1766 CRYPTO_ctr128_encrypt(buf.c,buf.c,sizeof(buf),
1767 &key,ctx.Yi.c,ctx.EKi.c,&ctx.mres,
1768 (block128_f)AES_encrypt);
1769 start = OPENSSL_rdtsc();
1770 CRYPTO_ctr128_encrypt(buf.c,buf.c,sizeof(buf),
1771 &key,ctx.Yi.c,ctx.EKi.c,&ctx.mres,
1772 (block128_f)AES_encrypt);
1773 ctr_t = OPENSSL_rdtsc() - start;
1775 printf("%.2f-%.2f=%.2f\n",
1776 gcm_t/(double)sizeof(buf),
1777 ctr_t/(double)sizeof(buf),
1778 (gcm_t-ctr_t)/(double)sizeof(buf));
1781 void (*gcm_ghash_p)(u64 Xi[2],const u128 Htable[16],
1782 const u8 *inp,size_t len) = ctx.ghash;
1784 GHASH((&ctx),buf.c,sizeof(buf));
1785 start = OPENSSL_rdtsc();
1786 for (i=0;i<100;++i) GHASH((&ctx),buf.c,sizeof(buf));
1787 gcm_t = OPENSSL_rdtsc() - start;
1788 printf("%.2f\n",gcm_t/(double)sizeof(buf)/(double)i);