Message digest stuff.

1 files changed, 4 insertions, 4 deletions

diff --git a/crypto/sha/sha.h b/crypto/sha/sha.h
index 105d4c8575..ba40aafc13 100644
--- a/crypto/sha/sha.h
+++ b/crypto/sha/sha.h
@@ -90,16 +90,16 @@ typedef struct SHAstate_st
 
 #ifndef NO_SHA0
 void SHA_Init(SHA_CTX *c);
-void SHA_Update(SHA_CTX *c, unsigned char *data, unsigned long len);
+void SHA_Update(SHA_CTX *c, const unsigned char *data, unsigned long len);
 void SHA_Final(unsigned char *md, SHA_CTX *c);
-unsigned char *SHA(unsigned char *d, unsigned long n,unsigned char *md);
+unsigned char *SHA(const unsigned char *d, unsigned long n,unsigned char *md);
 void SHA_Transform(SHA_CTX *c, unsigned char *data);
 #endif
 #ifndef NO_SHA1
 void SHA1_Init(SHA_CTX *c);
-void SHA1_Update(SHA_CTX *c, unsigned char *data, unsigned long len);
+void SHA1_Update(SHA_CTX *c, const unsigned char *data, unsigned long len);
 void SHA1_Final(unsigned char *md, SHA_CTX *c);
-unsigned char *SHA1(unsigned char *d, unsigned long n,unsigned char *md);
+unsigned char *SHA1(const unsigned char *d, unsigned long n,unsigned char *md);
 void SHA1_Transform(SHA_CTX *c, unsigned char *data);
 #endif
 #ifdef  __cplusplus