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crypto/modes/gcm128.c: more strict aliasing fixes.

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(cherry picked from commit 997d1aac7cfb957decb62d8f0034a7eca6177fec)
This commit is contained in:
Andy Polyakov 2014-04-06 17:19:54 +02:00
parent 00acdfbf98
commit aba7600029
1 changed files with 88 additions and 0 deletions
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88
crypto/modes/gcm128.c
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@ -810,7 +810,11 @@ void CRYPTO_gcm128_setiv(GCM128_CONTEXT *ctx,const unsigned char *iv,size_t len)
GCM_MUL(ctx,Yi);
if (is_endian.little)
#ifdef BSWAP4
ctr = BSWAP4(ctx->Yi.d[3]);
#else
ctr = GETU32(ctx->Yi.c+12);
#endif
else
ctr = ctx->Yi.d[3];
}
@ -818,7 +822,11 @@ void CRYPTO_gcm128_setiv(GCM128_CONTEXT *ctx,const unsigned char *iv,size_t len)
(*ctx->block)(ctx->Yi.c,ctx->EK0.c,ctx->key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
}
@ -913,7 +921,11 @@ int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx,
}
if (is_endian.little)
#ifdef BSWAP4
ctr = BSWAP4(ctx->Yi.d[3]);
#else
ctr = GETU32(ctx->Yi.c+12);
#endif
else
ctr = ctx->Yi.d[3];
@ -947,7 +959,11 @@ int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx,
(*block)(ctx->Yi.c,ctx->EKi.c,key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
for (i=0; i<16/sizeof(size_t); ++i)
@ -969,7 +985,11 @@ int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx,
(*block)(ctx->Yi.c,ctx->EKi.c,key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
for (i=0; i<16/sizeof(size_t); ++i)
@ -988,7 +1008,11 @@ int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx,
(*block)(ctx->Yi.c,ctx->EKi.c,key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
for (i=0; i<16/sizeof(size_t); ++i)
@ -1004,7 +1028,11 @@ int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx,
(*block)(ctx->Yi.c,ctx->EKi.c,key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
while (len--) {
@ -1022,7 +1050,11 @@ int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx,
(*block)(ctx->Yi.c,ctx->EKi.c,key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
}
@ -1066,7 +1098,11 @@ int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx,
}
if (is_endian.little)
#ifdef BSWAP4
ctr = BSWAP4(ctx->Yi.d[3]);
#else
ctr = GETU32(ctx->Yi.c+12);
#endif
else
ctr = ctx->Yi.d[3];
@ -1103,7 +1139,11 @@ int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx,
(*block)(ctx->Yi.c,ctx->EKi.c,key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
for (i=0; i<16/sizeof(size_t); ++i)
@ -1123,7 +1163,11 @@ int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx,
(*block)(ctx->Yi.c,ctx->EKi.c,key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
for (i=0; i<16/sizeof(size_t); ++i)
@ -1141,7 +1185,11 @@ int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx,
(*block)(ctx->Yi.c,ctx->EKi.c,key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
for (i=0; i<16/sizeof(size_t); ++i) {
@ -1159,7 +1207,11 @@ int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx,
(*block)(ctx->Yi.c,ctx->EKi.c,key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
while (len--) {
@ -1180,7 +1232,11 @@ int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx,
(*block)(ctx->Yi.c,ctx->EKi.c,key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
}
@ -1225,7 +1281,11 @@ int CRYPTO_gcm128_encrypt_ctr32(GCM128_CONTEXT *ctx,
}
if (is_endian.little)
#ifdef BSWAP4
ctr = BSWAP4(ctx->Yi.d[3]);
#else
ctr = GETU32(ctx->Yi.c+12);
#endif
else
ctr = ctx->Yi.d[3];
@ -1247,7 +1307,11 @@ int CRYPTO_gcm128_encrypt_ctr32(GCM128_CONTEXT *ctx,
(*stream)(in,out,GHASH_CHUNK/16,key,ctx->Yi.c);
ctr += GHASH_CHUNK/16;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
GHASH(ctx,out,GHASH_CHUNK);
@ -1262,7 +1326,11 @@ int CRYPTO_gcm128_encrypt_ctr32(GCM128_CONTEXT *ctx,
(*stream)(in,out,j,key,ctx->Yi.c);
ctr += (unsigned int)j;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
in += i;
@ -1282,7 +1350,11 @@ int CRYPTO_gcm128_encrypt_ctr32(GCM128_CONTEXT *ctx,
(*ctx->block)(ctx->Yi.c,ctx->EKi.c,key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
while (len--) {
@ -1324,7 +1396,11 @@ int CRYPTO_gcm128_decrypt_ctr32(GCM128_CONTEXT *ctx,
}
if (is_endian.little)
#ifdef BSWAP4
ctr = BSWAP4(ctx->Yi.d[3]);
#else
ctr = GETU32(ctx->Yi.c+12);
#endif
else
ctr = ctx->Yi.d[3];
@ -1349,7 +1425,11 @@ int CRYPTO_gcm128_decrypt_ctr32(GCM128_CONTEXT *ctx,
(*stream)(in,out,GHASH_CHUNK/16,key,ctx->Yi.c);
ctr += GHASH_CHUNK/16;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
out += GHASH_CHUNK;
@ -1375,7 +1455,11 @@ int CRYPTO_gcm128_decrypt_ctr32(GCM128_CONTEXT *ctx,
(*stream)(in,out,j,key,ctx->Yi.c);
ctr += (unsigned int)j;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
out += i;
@ -1386,7 +1470,11 @@ int CRYPTO_gcm128_decrypt_ctr32(GCM128_CONTEXT *ctx,
(*ctx->block)(ctx->Yi.c,ctx->EKi.c,key);
++ctr;
if (is_endian.little)
#ifdef BSWAP4
ctx->Yi.d[3] = BSWAP4(ctr);
#else
PUTU32(ctx->Yi.c+12,ctr);
#endif
else
ctx->Yi.d[3] = ctr;
while (len--) {