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python/gdata/tlslite/utils/PyCrypto_RSAKey.py

@@ -0,0 +1,61 @@
+"""PyCrypto RSA implementation."""
+
+from cryptomath import *
+
+from RSAKey import *
+from Python_RSAKey import Python_RSAKey
+
+if pycryptoLoaded:
+
+    from Crypto.PublicKey import RSA
+
+    class PyCrypto_RSAKey(RSAKey):
+        def __init__(self, n=0, e=0, d=0, p=0, q=0, dP=0, dQ=0, qInv=0):
+            if not d:
+                self.rsa = RSA.construct( (n, e) )
+            else:
+                self.rsa = RSA.construct( (n, e, d, p, q) )
+
+        def __getattr__(self, name):
+            return getattr(self.rsa, name)
+
+        def hasPrivateKey(self):
+            return self.rsa.has_private()
+
+        def hash(self):
+            return Python_RSAKey(self.n, self.e).hash()
+
+        def _rawPrivateKeyOp(self, m):
+            s = numberToString(m)
+            byteLength = numBytes(self.n)
+            if len(s)== byteLength:
+                pass
+            elif len(s) == byteLength-1:
+                s = '\0' + s
+            else:
+                raise AssertionError()
+            c = stringToNumber(self.rsa.decrypt((s,)))
+            return c
+
+        def _rawPublicKeyOp(self, c):
+            s = numberToString(c)
+            byteLength = numBytes(self.n)
+            if len(s)== byteLength:
+                pass
+            elif len(s) == byteLength-1:
+                s = '\0' + s
+            else:
+                raise AssertionError()
+            m = stringToNumber(self.rsa.encrypt(s, None)[0])
+            return m
+
+        def writeXMLPublicKey(self, indent=''):
+            return Python_RSAKey(self.n, self.e).write(indent)
+
+        def generate(bits):
+            key = PyCrypto_RSAKey()
+            def f(numBytes):
+                return bytesToString(getRandomBytes(numBytes))
+            key.rsa = RSA.generate(bits, f)
+            return key
+        generate = staticmethod(generate)