Data commit

Task/RSA-code/Python/rsa-code.py

@@ -0,0 +1,25 @@
+import binascii
+
+n = 9516311845790656153499716760847001433441357    # p*q = modulus
+e = 65537
+d = 5617843187844953170308463622230283376298685
+
+message='Rosetta Code!'
+print('message                 ', message)
+
+hex_data   = binascii.hexlify(message.encode())
+print('hex data                ', hex_data)
+
+plain_text = int(hex_data, 16)
+print('plain text integer      ', plain_text)
+
+if plain_text > n:
+  raise Exception('plain text too large for key')
+
+encrypted_text = pow(plain_text,     e, n)
+print('encrypted text integer  ', encrypted_text)
+
+decrypted_text = pow(encrypted_text, d, n)
+print('decrypted text integer  ', decrypted_text)
+
+print('message                 ', binascii.unhexlify(hex(decrypted_text)[2:]).decode())     # [2:] slicing, to strip the 0x part