Add m-esr52 at 52.6.0

1 files changed, 94 insertions, 0 deletions

diff --git a/python/rsa/tests/test_pkcs1.py b/python/rsa/tests/test_pkcs1.py
new file mode 100644
index 000000000..d5882dfd1
--- /dev/null
+++ b/python/rsa/tests/test_pkcs1.py
@@ -0,0 +1,94 @@
+'''Tests string operations.'''
+
+import struct
+import unittest2
+
+import rsa
+from rsa import pkcs1
+from rsa._compat import byte, is_integer, b, is_bytes
+
+class BinaryTest(unittest2.TestCase):
+
+    def setUp(self):
+        (self.pub, self.priv) = rsa.newkeys(256)
+
+    def test_enc_dec(self):
+
+        message = struct.pack('>IIII', 0, 0, 0, 1)
+        print("\tMessage:   %r" % message)
+
+        encrypted = pkcs1.encrypt(message, self.pub)
+        print("\tEncrypted: %r" % encrypted)
+
+        decrypted = pkcs1.decrypt(encrypted, self.priv)
+        print("\tDecrypted: %r" % decrypted)
+
+        self.assertEqual(message, decrypted)
+
+    def test_decoding_failure(self):
+
+        message = struct.pack('>IIII', 0, 0, 0, 1)
+        encrypted = pkcs1.encrypt(message, self.pub)
+
+        # Alter the encrypted stream
+        a = encrypted[5]
+        if is_bytes(a):
+            a = ord(a)
+        encrypted = encrypted[:5] + byte(a + 1) + encrypted[6:]
+        
+        self.assertRaises(pkcs1.DecryptionError, pkcs1.decrypt, encrypted,
+                          self.priv)
+
+    def test_randomness(self):
+        '''Encrypting the same message twice should result in different
+        cryptos.
+        '''
+        
+        message = struct.pack('>IIII', 0, 0, 0, 1)
+        encrypted1 = pkcs1.encrypt(message, self.pub)
+        encrypted2 = pkcs1.encrypt(message, self.pub)
+        
+        self.assertNotEqual(encrypted1, encrypted2)
+
+class SignatureTest(unittest2.TestCase):
+
+    def setUp(self):
+        (self.pub, self.priv) = rsa.newkeys(512)
+
+    def test_sign_verify(self):
+        '''Test happy flow of sign and verify'''
+        
+        message = b('je moeder')
+        print("\tMessage:   %r" % message)
+
+        signature = pkcs1.sign(message, self.priv, 'SHA-256')
+        print("\tSignature: %r" % signature)
+
+        self.assertTrue(pkcs1.verify(message, signature, self.pub))
+
+    def test_alter_message(self):
+        '''Altering the message should let the verification fail.'''
+        
+        signature = pkcs1.sign(b('je moeder'), self.priv, 'SHA-256')
+        self.assertRaises(pkcs1.VerificationError, pkcs1.verify,
+                          b('mijn moeder'), signature, self.pub)
+
+    def test_sign_different_key(self):
+        '''Signing with another key should let the verification fail.'''
+        
+        (otherpub, _) = rsa.newkeys(512)
+        
+        message = b('je moeder')
+        signature = pkcs1.sign(message, self.priv, 'SHA-256')
+        self.assertRaises(pkcs1.VerificationError, pkcs1.verify,
+                          message, signature, otherpub)
+
+    def test_multiple_signings(self):
+        '''Signing the same message twice should return the same signatures.'''
+        
+        message = struct.pack('>IIII', 0, 0, 0, 1)
+        signature1 = pkcs1.sign(message, self.priv, 'SHA-1')
+        signature2 = pkcs1.sign(message, self.priv, 'SHA-1')
+        
+        self.assertEqual(signature1, signature2)
+