Added define LTC_RSA_BLINDING to be able to disable rsa blinding

src/headers/tomcrypt_custom.h

@@ -289,10 +289,10 @@
 #ifndef LTC_NO_MATH
 
 /* LibTomMath */
-/* #define LTM_LTC_DESC */
+/* #define LTM_DESC */
 
 /* TomsFastMath */
-/* #define TFM_LTC_DESC */
+/* #define TFM_DESC */
 
 #endif /* LTC_NO_MATH */
 
@@ -302,6 +302,9 @@
 /* Include RSA support */
 #define LTC_MRSA
 
+/* Enable RSA blinding when doing private key operations? */
+/* #define LTC_RSA_BLINDING */
+
 /* Include Diffie-Hellman support */
 #ifndef GPM_DESC
 /* is_prime fails for GPM */
@@ -382,6 +385,11 @@
    #define LTC_PKCS_1
 #endif   
 
+#if defined(TFM_DESC) && defined(LTC_RSA_BLINDING)
+    #warning RSA blinding currently not supported in combination with TFM
+    #undef LTC_RSA_BLINDING
+#endif
+
 #if defined(LTC_DER) && !defined(MPI) 
    #error ASN.1 DER requires MPI functionality
 #endif

src/headers/tomcrypt_math.h

@@ -431,6 +431,15 @@ typedef struct {
       @return CRYPT_OK on success
    */
    int (*submod)(void *a, void *b, void *c, void *d);
+
+/* ---- misc stuff ---- */
+   /** Make a pseudo-random mpi
+      @param  a     The mpi to make random
+      @param  size  The desired length
+      @return CRYPT_OK on success
+   */
+   int (*rand)(void *a, int size);
+
 } ltc_math_descriptor;
 
 extern ltc_math_descriptor ltc_mp;
@@ -515,6 +524,8 @@ extern const ltc_math_descriptor gmp_desc;
 
 #define mp_tohex(a, b)               mp_toradix(a, b, 16)
 
+#define mp_rand(a, b)                ltc_mp.rand(a, b)
+
 #endif
 
 /* $Source$ */