1 files changed, 12 insertions, 11 deletions

diff --git a/src/lib/libcrypto/rsa/rsa_null.c b/src/lib/libcrypto/rsa/rsa_null.c
index 7b58a0eca3..64057fbdcf 100644
--- a/src/lib/libcrypto/rsa/rsa_null.c
+++ b/src/lib/libcrypto/rsa/rsa_null.c
@@ -69,16 +69,16 @@
  * operations (like storing RSA keys) are permitted.
  */
 
-static int RSA_null_public_encrypt(int flen, unsigned char *from,
+static int RSA_null_public_encrypt(int flen, const unsigned char *from,
                 unsigned char *to, RSA *rsa,int padding);
-static int RSA_null_private_encrypt(int flen, unsigned char *from,
+static int RSA_null_private_encrypt(int flen, const unsigned char *from,
                 unsigned char *to, RSA *rsa,int padding);
-static int RSA_null_public_decrypt(int flen, unsigned char *from,
+static int RSA_null_public_decrypt(int flen, const unsigned char *from,
                 unsigned char *to, RSA *rsa,int padding);
-static int RSA_null_private_decrypt(int flen, unsigned char *from,
+static int RSA_null_private_decrypt(int flen, const unsigned char *from,
                 unsigned char *to, RSA *rsa,int padding);
 #if 0 /* not currently used */
-static int RSA_null_mod_exp(BIGNUM *r0, BIGNUM *i, RSA *rsa);
+static int RSA_null_mod_exp(const BIGNUM *r0, const BIGNUM *i, RSA *rsa);
 #endif
 static int RSA_null_init(RSA *rsa);
 static int RSA_null_finish(RSA *rsa);
@@ -88,40 +88,41 @@ static RSA_METHOD rsa_null_meth={
         RSA_null_public_decrypt,
         RSA_null_private_encrypt,
         RSA_null_private_decrypt,
-        NULL, NULL,
+        NULL,
+        NULL,
         RSA_null_init,
         RSA_null_finish,
         0,
         NULL,
         };
 
-RSA_METHOD *RSA_null_method(void)
+const RSA_METHOD *RSA_null_method(void)
         {
         return(&rsa_null_meth);
         }
 
-static int RSA_null_public_encrypt(int flen, unsigned char *from,
+static int RSA_null_public_encrypt(int flen, const unsigned char *from,
              unsigned char *to, RSA *rsa, int padding)
         {
         RSAerr(RSA_F_RSA_NULL, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
         return -1;
         }
 
-static int RSA_null_private_encrypt(int flen, unsigned char *from,
+static int RSA_null_private_encrypt(int flen, const unsigned char *from,
              unsigned char *to, RSA *rsa, int padding)
         {
         RSAerr(RSA_F_RSA_NULL, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
         return -1;
         }
 
-static int RSA_null_private_decrypt(int flen, unsigned char *from,
+static int RSA_null_private_decrypt(int flen, const unsigned char *from,
              unsigned char *to, RSA *rsa, int padding)
         {
         RSAerr(RSA_F_RSA_NULL, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);
         return -1;
         }
 
-static int RSA_null_public_decrypt(int flen, unsigned char *from,
+static int RSA_null_public_decrypt(int flen, const unsigned char *from,
              unsigned char *to, RSA *rsa, int padding)
         {
         RSAerr(RSA_F_RSA_NULL, RSA_R_RSA_OPERATIONS_NOT_SUPPORTED);