Add signature generation operation classes. Remove sign() from

PK_Signing_Key, though for the moment the class remains because there
are a few pieces of code that use it to detect if signatures are
supported, or for passing to functions in look_pk

1 files changed, 17 insertions, 0 deletions

diff --git a/src/pubkey/rsa/rsa.h b/src/pubkey/rsa/rsa.h
index 0d5a4ad2e..aa2f8124f 100644
--- a/src/pubkey/rsa/rsa.h
+++ b/src/pubkey/rsa/rsa.h
@@ -101,6 +101,23 @@ class BOTAN_DLL RSA_PrivateKey : public RSA_PublicKey,
       BigInt private_op(const byte[], u32bit) const;
    };
 
+class BOTAN_DLL RSA_Signature_Operation : public PK_Ops::Signature_Operation
+   {
+   public:
+      RSA_Signature_Operation(const RSA_PrivateKey& rsa);
+
+      u32bit max_input_bits() const { return (n_bits - 1); }
+
+      SecureVector<byte> sign(const byte msg[], u32bit msg_len,
+                              RandomNumberGenerator& rng);
+   private:
+      const BigInt& q;
+      const BigInt& c;
+      Fixed_Exponent_Power_Mod powermod_d1_p, powermod_d2_q;
+      Modular_Reducer mod_p;
+      u32bit n_bits;
+   };
+
 }
 
 #endif