From 4c82851dd5d5644a89d4f269079bf901f763ee33 Mon Sep 17 00:00:00 2001
From: Michael Krelin <hacker@klever.net>
Date: Tue, 19 Jul 2005 13:08:32 +0000
Subject: initial commit of libopkele - OpenID support library

---
(limited to 'lib/secret.cc')

diff --git a/lib/secret.cc b/lib/secret.cc
new file mode 100644
index 0000000..ae8a3c5
--- a/dev/null
+++ b/lib/secret.cc
@@ -0,0 +1,61 @@
+#include <algorithm>
+#include <functional>
+#include <opkele/types.h>
+#include <opkele/exception.h>
+#include <mimetic/mimetic.h>
+
+namespace opkele {
+    using namespace std;
+
+    template<class __a1,class __a2,class __r>
+	struct bitwise_xor : public binary_function<__a1,__a2,__r> {
+	    __r operator() (const __a1& a1,const __a2& a2) const {
+		return a1^a2;
+	    }
+	};
+
+    void secret_t::enxor_to_base64(const unsigned char *key_sha1,string& rv) const {
+	if(size()!=20)
+	    throw bad_input(OPKELE_CP_ "wrong secret size");
+	vector<unsigned char> tmp;
+	transform(
+		begin(), end(),
+		key_sha1,
+		back_insert_iterator<vector<unsigned char> >(tmp),
+		bitwise_xor<unsigned char,unsigned char,unsigned char>() );
+	mimetic::Base64::Encoder b(0);
+	mimetic::encode(
+		tmp.begin(),tmp.end(), b,
+		back_insert_iterator<string>(rv) );
+    }
+
+    void secret_t::enxor_from_base64(const unsigned char *key_sha1,const string& b64) {
+	mimetic::Base64::Decoder b;
+	clear();
+	mimetic::decode(
+		b64.begin(),b64.end(), b,
+		back_insert_iterator<secret_t>(*this) );
+	transform(
+		begin(), end(),
+		key_sha1,
+		begin(),
+		bitwise_xor<unsigned char,unsigned char,unsigned char>() );
+    }
+
+    void secret_t::to_base64(string& rv) const {
+	if(size()!=20)
+	    throw bad_input(OPKELE_CP_ "wrong secret size");
+	mimetic::Base64::Encoder b(0);
+	mimetic::encode(
+		begin(),end(), b,
+		back_insert_iterator<string>(rv) );
+    }
+
+    void secret_t::from_base64(const string& b64) {
+	mimetic::Base64::Decoder b;
+	mimetic::decode(
+		b64.begin(),b64.end(), b,
+		back_insert_iterator<secret_t>(*this) );
+    }
+
+}
--
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