1 files changed, 16 insertions, 1 deletions
diff --git a/Swiften/StringCodecs/PBKDF2.h b/Swiften/StringCodecs/PBKDF2.h
index b1a5986..0c04145 100644
--- a/Swiften/StringCodecs/PBKDF2.h
+++ b/Swiften/StringCodecs/PBKDF2.h
@@ -7,10 +7,25 @@
 #pragma once
 
 #include <Swiften/Base/SafeByteArray.h>
+#include <Swiften/Base/Concat.h>
 
 namespace Swift {
 	class PBKDF2 {
 		public:
-			static ByteArray encode(const SafeByteArray& password, const ByteArray& salt, int iterations);
+			template<typename PRF>
+			static ByteArray encode(const SafeByteArray& password, const ByteArray& salt, int iterations) {
+				PRF prf;
+				ByteArray u = prf(password, concat(salt, createByteArray("\0\0\0\1", 4)));
+				ByteArray result(u);
+				int i = 1;
+				while (i < iterations) {
+					u = prf(password, u);
+					for (unsigned int j = 0; j < u.size(); ++j) {
+						result[j] ^= u[j];
+					}
+					++i;
+				}
+				return result;
+			}
 	};
 }