X-Git-Url: http://git.euphorik.ch/?a=blobdiff_plain;f=src%2FRsaCrt.h;h=6e93e6bd25269d646e69bc4eb0b0905a6a09c929;hb=5b2785dd710151d81e6f6af4fd6ae48521068e41;hp=87f9a11856c58fe48d6d35b5faf871574e2166f4;hpb=91989c2627abc2cdf511f17169e4f862dc55e838;p=crypto_lab3.git

diff --git a/src/RsaCrt.h b/src/RsaCrt.h
index 87f9a11..6e93e6b 100644
--- a/src/RsaCrt.h
+++ b/src/RsaCrt.h
@@ -2,6 +2,7 @@
 #define RSACRT_H
 
 #include <utility>
+#include <exception>
 
 #include <gmpxx.h>
 
@@ -11,20 +12,32 @@ class RsaCrt
 {
 public:
    struct KeyPriv {
-      mpz_class n; // Modulus.
-      uint e; // Exponent.
-
       mpz_class p;
       mpz_class q;
       mpz_class dp;
       mpz_class dq;
       mpz_class qInv;
-      mpz_class d;
    };
 
+   /**
+    * Generate a pair of keys (public, private).
+    */
    static std::pair<Rsa::KeyPub, KeyPriv> generateRSAKeys(uint exponent, uint keySizeBits);
 
+   /**
+    * m must not be greater or equal than kPriv.n.
+    * @param m the message to sign. No padding is used.
+    */
    static mpz_class sign(const mpz_class& m, const KeyPriv& kPriv);
+
+   /**
+    * Sp is altered by flipping its 42nd bit.
+    * @param m the message to sign. No padding is used.
+    */
+   static mpz_class signWithFaultySp(const mpz_class& m, const KeyPriv& kPriv);
+
+private:
+   static mpz_class sign(const mpz_class& m, const KeyPriv& kPriv, bool withError);
 };
 
 #endif