From 284cae08b24ae892ee8ce5c3511acbf0b7688a43 Mon Sep 17 00:00:00 2001
From: lloyd <lloyd@randombit.net>
Date: Fri, 5 Mar 2010 16:29:39 +0000
Subject: Remove ECDSA_PublicKey::verify

---
 src/pubkey/ecdsa/ecdsa.cpp | 30 ------------------------------
 src/pubkey/ecdsa/ecdsa.h   | 10 ----------
 2 files changed, 40 deletions(-)

(limited to 'src')

diff --git a/src/pubkey/ecdsa/ecdsa.cpp b/src/pubkey/ecdsa/ecdsa.cpp
index 143389751..fc2a75454 100644
--- a/src/pubkey/ecdsa/ecdsa.cpp
+++ b/src/pubkey/ecdsa/ecdsa.cpp
@@ -9,38 +9,8 @@
 
 #include <botan/ecdsa.h>
 
-#include <iostream>
-
 namespace Botan {
 
-bool ECDSA_PublicKey::verify(const byte msg[], u32bit msg_len,
-                             const byte sig[], u32bit sig_len) const
-   {
-   const BigInt& n = domain().get_order();
-
-   if(n == 0)
-      throw Invalid_State("ECDSA_PublicKey::verify: Not initialized");
-
-   if(sig_len != n.bytes()*2)
-      return false;
-
-   BigInt e(msg, msg_len);
-
-   BigInt r(sig, sig_len / 2);
-   BigInt s(sig + sig_len / 2, sig_len / 2);
-
-   if(r < 0 || r >= n || s < 0 || s >= n)
-      return false;
-
-   BigInt w = inverse_mod(s, n);
-
-   PointGFp R = w * (e * domain().get_base_point() + r*public_point());
-   if(R.is_zero())
-      return false;
-
-   return (R.get_affine_x() % n == r);
-   }
-
 ECDSA_Signature_Operation::ECDSA_Signature_Operation(const ECDSA_PrivateKey& ecdsa) :
    base_point(ecdsa.domain().get_base_point()),
    order(ecdsa.domain().get_order()),
diff --git a/src/pubkey/ecdsa/ecdsa.h b/src/pubkey/ecdsa/ecdsa.h
index c26e47354..240c981e8 100644
--- a/src/pubkey/ecdsa/ecdsa.h
+++ b/src/pubkey/ecdsa/ecdsa.h
@@ -54,16 +54,6 @@ class BOTAN_DLL ECDSA_PublicKey : public virtual EC_PublicKey,
       u32bit message_part_size() const
          { return domain().get_order().bytes(); }
 
-      /**
-      * Verify a message with this key.
-      * @param message the byte array containing the message
-      * @param mess_len the number of bytes in the message byte array
-      * @param signature the byte array containing the signature
-      * @param sig_len the number of bytes in the signature byte array
-      */
-      bool verify(const byte message[], u32bit mess_len,
-                  const byte signature[], u32bit sig_len) const;
-
    protected:
       ECDSA_PublicKey() {}
    };
-- 
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