crypto modules

Cryptography/Public_Key/RSA.py

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+#!/usr/bin/env python
+
+
+from Crypto.PublicKey import RSA
+from Crypto import Random
+
+
+def gen_key(nbits=1024):
+    random_generator = Random.new().read
+    key = RSA.generate(nbits, random_generator)
+    return key
+
+def check_key(key):
+    print key.can_encrypt()
+    print key.can_sign()
+    print key.has_private()
+
+
+def get_pubk(key):
+    return key.publickey()
+
+
+def encrypt(public_key, text, random):
+    return public_key.encrypt(text, random)
+
+
+def decrypt(data):
+    return key.decrypt(enc_data)
+
+
+if __name__ == '__main__':
+    key = gen_key()
+
+    check_key(key)
+
+    public_key = get_pubk(key)
+
+    text = 'abcdefgh'
+    enc_data = encrypt(public_key, text, random=32)
+    print enc_data
+
+    dec_data = decrypt(enc_data)
+    print dec_data
+

Cryptography/Public_Key/RSA_sign.py

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+#!/usr/bin/env python
+
+
+
+from Crypto.Hash import SHA256
+from Crypto.PublicKey import RSA
+from Crypto import Random
+
+key = RSA.generate(1024)
+text = 'abcdefgh'
+
+hash = SHA256.new(text).digest()
+print hash
+
+signature = key.sign(hash, '')
+print signature