initial commit of libopkele - OpenID support library

1 files changed, 61 insertions, 0 deletions

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) );
+    }
+
+}