Add a couple more Python examples and the very beginning of a manual/reference

for the Python wrappers.

2 files changed, 75 insertions, 0 deletions

diff --git a/doc/python/cipher.py b/doc/python/cipher.py
new file mode 100755
index 000000000..1be2759ae
--- /dev/null
+++ b/doc/python/cipher.py
@@ -0,0 +1,44 @@
+#!/usr/bin/python
+
+import botan
+import sys
+
+def encrypt(input, passphrase):
+    rng = botan.RandomNumberGenerator()
+
+    # Use as both EAX IV and PBKDF2 salt
+    salt = rng.gen_random(10)
+
+    iterations = 10000
+    output_size = 16
+
+    key = botan.pbkdf2(passphrase, salt, iterations, output_size, "SHA-1")
+
+    encryptor = botan.Cipher("AES-128/EAX", "encrypt", key)
+
+    ciphertext = encryptor.cipher(input, salt)
+    return (ciphertext, salt)
+
+def decrypt(input, salt, passphrase):
+    iterations = 10000
+    output_size = 16
+
+    key = botan.pbkdf2(passphrase, salt, iterations, output_size, "SHA-1")
+
+    decryptor = botan.Cipher("AES-128/EAX", "decrypt", key)
+
+    return decryptor.cipher(input, salt)
+
+def main(args = None):
+    if args is None:
+        args = sys.argv
+
+    passphrase = args[1]
+    input = ''.join(open(args[2]).readlines())
+
+    (ciphertext, salt) = encrypt(input, passphrase)
+
+    print decrypt(ciphertext, salt, passphrase)
+
+if __name__ == '__main__':
+    sys.exit(main())
diff --git a/doc/python/rsa.py b/doc/python/rsa.py
new file mode 100755
index 000000000..15ffcffa3
--- /dev/null
+++ b/doc/python/rsa.py
@@ -0,0 +1,31 @@
+#!/usr/bin/python
+
+import botan
+
+rng = botan.RandomNumberGenerator()
+
+rsa_priv = botan.RSA_PrivateKey(768, rng)
+
+print rsa_priv.to_string()
+print int(rsa_priv.get_N())
+print int(rsa_priv.get_E())
+
+
+rsa_pub = botan.RSA_PublicKey(rsa_priv)
+
+key = rng.gen_random(20)
+
+ciphertext = rsa_pub.encrypt(key, 'EME1(SHA-1)', rng)
+
+print ciphertext.encode('hex')
+
+plaintext = rsa_priv.decrypt(ciphertext, 'EME1(SHA-1)')
+
+print plaintext == key
+
+
+signature = rsa_priv.sign(key, 'EMSA4(SHA-256)', rng)
+
+key = key.replace('a', 'b')
+
+print rsa_pub.verify(key, signature,  'EMSA4(SHA-256)')