1 files changed, 20 insertions, 0 deletions
diff --git a/Swiften/StringCodecs/PBKDF2.cpp b/Swiften/StringCodecs/PBKDF2.cpp
new file mode 100644
index 0000000..c09c10e
--- /dev/null
+++ b/Swiften/StringCodecs/PBKDF2.cpp
@@ -0,0 +1,20 @@
+#include "Swiften/StringCodecs/PBKDF2.h"
+#include "Swiften/StringCodecs/HMACSHA1.h"
+
+namespace Swift {
+
+ByteArray PBKDF2::encode(const ByteArray& password, const ByteArray& salt, int iterations) {
+	ByteArray u = HMACSHA1::getResult(password, salt + ByteArray("\0\0\0\1", 4));
+	ByteArray result = u;
+	int i = 1;
+	while (i < iterations) {
+		u = HMACSHA1::getResult(password, u);
+		for (unsigned int j = 0; j < u.getSize(); ++j) {
+			result[j] ^= u[j];
+		}
+		++i;
+	}
+	return result;
+}
+
+}