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Optimize #undef DES_UNROLL for size.

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This commit is contained in:
Andy Polyakov 2008-12-22 14:10:42 +00:00
parent 2140659b00
commit 9f03d0fc04
3 changed files with 6 additions and 16 deletions
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16
crypto/des/des_enc.c
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@ -108,12 +108,10 @@ void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
D_ENCRYPT(l,r,28); /* 15 */
D_ENCRYPT(r,l,30); /* 16 */
#else
for (i=0; i<32; i+=8)
for (i=0; i<32; i+=4)
{
D_ENCRYPT(l,r,i+0); /* 1 */
D_ENCRYPT(r,l,i+2); /* 2 */
D_ENCRYPT(l,r,i+4); /* 3 */
D_ENCRYPT(r,l,i+6); /* 4 */
}
#endif
}
@ -137,12 +135,10 @@ void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
D_ENCRYPT(l,r, 2); /* 2 */
D_ENCRYPT(r,l, 0); /* 1 */
#else
for (i=30; i>0; i-=8)
for (i=30; i>0; i-=4)
{
D_ENCRYPT(l,r,i-0); /* 16 */
D_ENCRYPT(r,l,i-2); /* 15 */
D_ENCRYPT(l,r,i-4); /* 14 */
D_ENCRYPT(r,l,i-6); /* 13 */
}
#endif
}
@ -204,12 +200,10 @@ void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)
D_ENCRYPT(l,r,28); /* 15 */
D_ENCRYPT(r,l,30); /* 16 */
#else
for (i=0; i<32; i+=8)
for (i=0; i<32; i+=4)
{
D_ENCRYPT(l,r,i+0); /* 1 */
D_ENCRYPT(r,l,i+2); /* 2 */
D_ENCRYPT(l,r,i+4); /* 3 */
D_ENCRYPT(r,l,i+6); /* 4 */
}
#endif
}
@ -233,12 +227,10 @@ void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)
D_ENCRYPT(l,r, 2); /* 2 */
D_ENCRYPT(r,l, 0); /* 1 */
#else
for (i=30; i>0; i-=8)
for (i=30; i>0; i-=4)
{
D_ENCRYPT(l,r,i-0); /* 16 */
D_ENCRYPT(r,l,i-2); /* 15 */
D_ENCRYPT(l,r,i-4); /* 14 */
D_ENCRYPT(r,l,i-6); /* 13 */
}
#endif
}

2
crypto/des/ecb_enc.c
View File

@ -91,7 +91,7 @@ const char *DES_options(void)
#ifdef DES_UNROLL
unroll="16";
#else
unroll="4";
unroll="2";
#endif
if (sizeof(DES_LONG) != sizeof(long))
size="int";

4
crypto/des/fcrypt_b.c
View File

@ -100,12 +100,10 @@ void fcrypt_body(DES_LONG *out, DES_key_schedule *ks, DES_LONG Eswap0,
#ifndef DES_UNROLL
register int i;
for (i=0; i<32; i+=8)
for (i=0; i<32; i+=4)
{
D_ENCRYPT(l,r,i+0); /* 1 */
D_ENCRYPT(r,l,i+2); /* 2 */
D_ENCRYPT(l,r,i+4); /* 1 */
D_ENCRYPT(r,l,i+6); /* 2 */
}
#else
D_ENCRYPT(l,r, 0); /* 1 */