Remove outdated legacy crypto options

Many options for supporting optimizations for legacy crypto on legacy
platforms have been removed.  This simplifies the source code and
does not really penalize anyone.
        DES_PTR (always on)
        DES_RISC1, DES_RISC2 (always off)
        DES_INT (always 'unsigned int')
        DES_UNROLL (always on)
        BF_PTR (always on) BF_PTR2 (removed)
        MD2_CHAR, MD2_LONG (always 'unsigned char')
        IDEA_SHORT, IDEA_LONG (always 'unsigned int')
        RC2_SHORT, RC2_LONG (always 'unsigned int')
        RC4_LONG (only int and char (for assembler) are supported)
        RC4_CHUNK (always long), RC_CHUNK_LL (removed)
        RC4_INDEX (always on)
And also make D_ENCRYPT macro more clear (@appro)

This is done in consultation with Andy.

Reviewed-by: Andy Polyakov <appro@openssl.org>

1 files changed, 0 insertions, 40 deletions

diff --git a/crypto/des/des_enc.c b/crypto/des/des_enc.c
index 613735190f..1f827f216e 100644
--- a/crypto/des/des_enc.c
+++ b/crypto/des/des_enc.c
@@ -62,12 +62,6 @@
 void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
 {
     register DES_LONG l, r, t, u;
-#ifdef DES_PTR
-    register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans;
-#endif
-#ifndef DES_UNROLL
-    register int i;
-#endif
     register DES_LONG *s;
 
     r = data[0];
@@ -92,7 +86,6 @@ void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
      * loop
      */
     if (enc) {
-#ifdef DES_UNROLL
         D_ENCRYPT(l, r, 0);     /* 1 */
         D_ENCRYPT(r, l, 2);     /* 2 */
         D_ENCRYPT(l, r, 4);     /* 3 */
@@ -109,14 +102,7 @@ void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
         D_ENCRYPT(r, l, 26);    /* 14 */
         D_ENCRYPT(l, r, 28);    /* 15 */
         D_ENCRYPT(r, l, 30);    /* 16 */
-#else
-        for (i = 0; i < 32; i += 4) {
-            D_ENCRYPT(l, r, i + 0); /* 1 */
-            D_ENCRYPT(r, l, i + 2); /* 2 */
-        }
-#endif
     } else {
-#ifdef DES_UNROLL
         D_ENCRYPT(l, r, 30);    /* 16 */
         D_ENCRYPT(r, l, 28);    /* 15 */
         D_ENCRYPT(l, r, 26);    /* 14 */
@@ -133,12 +119,6 @@ void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
         D_ENCRYPT(r, l, 4);     /* 3 */
         D_ENCRYPT(l, r, 2);     /* 2 */
         D_ENCRYPT(r, l, 0);     /* 1 */
-#else
-        for (i = 30; i > 0; i -= 4) {
-            D_ENCRYPT(l, r, i - 0); /* 16 */
-            D_ENCRYPT(r, l, i - 2); /* 15 */
-        }
-#endif
     }
 
     /* rotate and clear the top bits on machines with 8byte longs */
@@ -154,12 +134,6 @@ void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
 void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)
 {
     register DES_LONG l, r, t, u;
-#ifdef DES_PTR
-    register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans;
-#endif
-#ifndef DES_UNROLL
-    register int i;
-#endif
     register DES_LONG *s;
 
     r = data[0];
@@ -182,7 +156,6 @@ void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)
      * loop
      */
     if (enc) {
-#ifdef DES_UNROLL
         D_ENCRYPT(l, r, 0);     /* 1 */
         D_ENCRYPT(r, l, 2);     /* 2 */
         D_ENCRYPT(l, r, 4);     /* 3 */
@@ -199,14 +172,7 @@ void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)
         D_ENCRYPT(r, l, 26);    /* 14 */
         D_ENCRYPT(l, r, 28);    /* 15 */
         D_ENCRYPT(r, l, 30);    /* 16 */
-#else
-        for (i = 0; i < 32; i += 4) {
-            D_ENCRYPT(l, r, i + 0); /* 1 */
-            D_ENCRYPT(r, l, i + 2); /* 2 */
-        }
-#endif
     } else {
-#ifdef DES_UNROLL
         D_ENCRYPT(l, r, 30);    /* 16 */
         D_ENCRYPT(r, l, 28);    /* 15 */
         D_ENCRYPT(l, r, 26);    /* 14 */
@@ -223,12 +189,6 @@ void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)
         D_ENCRYPT(r, l, 4);     /* 3 */
         D_ENCRYPT(l, r, 2);     /* 2 */
         D_ENCRYPT(r, l, 0);     /* 1 */
-#else
-        for (i = 30; i > 0; i -= 4) {
-            D_ENCRYPT(l, r, i - 0); /* 16 */
-            D_ENCRYPT(r, l, i - 2); /* 15 */
-        }
-#endif
     }
     /* rotate and clear the top bits on machines with 8byte longs */
     data[0] = ROTATE(l, 3) & 0xffffffffL;