1 files changed, 28 insertions, 0 deletions
diff --git a/src/lib/tlslite/utils/Cryptlib_RC4.py b/src/lib/tlslite/utils/Cryptlib_RC4.py
new file mode 100755
index 000000000..7c6d087b8
--- /dev/null
+++ b/src/lib/tlslite/utils/Cryptlib_RC4.py
@@ -0,0 +1,28 @@
+"""Cryptlib RC4 implementation."""
+
+from cryptomath import *
+from RC4 import RC4
+
+if cryptlibpyLoaded:
+
+    def new(key):
+        return Cryptlib_RC4(key)
+
+    class Cryptlib_RC4(RC4):
+
+        def __init__(self, key):
+            RC4.__init__(self, key, "cryptlib")
+            self.context = cryptlib_py.cryptCreateContext(cryptlib_py.CRYPT_UNUSED, cryptlib_py.CRYPT_ALGO_RC4)
+            cryptlib_py.cryptSetAttribute(self.context, cryptlib_py.CRYPT_CTXINFO_KEYSIZE, len(key))
+            cryptlib_py.cryptSetAttributeString(self.context, cryptlib_py.CRYPT_CTXINFO_KEY, key)
+
+        def __del__(self):
+             cryptlib_py.cryptDestroyContext(self.context)
+
+        def encrypt(self, plaintext):
+            bytes = stringToBytes(plaintext)
+            cryptlib_py.cryptEncrypt(self.context, bytes)
+            return bytesToString(bytes)
+
+        def decrypt(self, ciphertext):
+            return self.encrypt(ciphertext)
+\ No newline at end of file