Add some const attributes.

* cipher/md4.c (transform): Add const attribute.
* cipher/md5.c (transform): Ditto.
* cipher/rmd160.c (transform): Ditto.
--

This is the same as
  http://bzr.savannah.gnu.org/lh/grub/trunk/grub/revision/3685

Signed-off-by: Werner Koch <wk@gnupg.org>

3 files changed, 6 insertions, 3 deletions

diff --git a/cipher/md4.c b/cipher/md4.c
index 8909ec4a..22fbf8d9 100644
--- a/cipher/md4.c
+++ b/cipher/md4.c
@@ -100,7 +100,8 @@ transform ( MD4_CONTEXT *ctx, const unsigned char *data )
 #ifdef WORDS_BIGENDIAN
   {
     int i;
-    byte *p2, *p1;
+    byte *p2;
+    const byte *p1;
     for(i=0, p1=data, p2=(byte*)in; i < 16; i++, p2 += 4 )
       {
 	p2[3] = *p1++;
diff --git a/cipher/md5.c b/cipher/md5.c
index 4793882a..a98678a9 100644
--- a/cipher/md5.c
+++ b/cipher/md5.c
@@ -91,7 +91,8 @@ transform ( MD5_CONTEXT *ctx, const unsigned char *data )
 #ifdef WORDS_BIGENDIAN
   {
     int i;
-    byte *p2, *p1;
+    byte *p2;
+    const byte *p1;
     for(i=0, p1=data, p2=(byte*)correct_words; i < 16; i++, p2 += 4 )
       {
         p2[3] = *p1++;
diff --git a/cipher/rmd160.c b/cipher/rmd160.c
index 552cff92..179a4d96 100644
--- a/cipher/rmd160.c
+++ b/cipher/rmd160.c
@@ -168,7 +168,8 @@ transform ( RMD160_CONTEXT *hd, const unsigned char *data )
   u32 x[16];
   {
     int i;
-    byte *p2, *p1;
+    byte *p2;
+    const byte *p1;
     for (i=0, p1=data, p2=(byte*)x; i < 16; i++, p2 += 4 )
       {
         p2[3] = *p1++;