| #!/usr/bin/env python |
| |
| '''Re-encryption demonstration |
| |
| This little program shows how to re-encrypt crypto from versions older than 2.0. |
| Those versions were inherently insecure, and version 2.0 solves those |
| insecurities. This did result in a different crypto format, so it's not backward |
| compatible. Use this program as a demonstration on how to re-encrypt your |
| files/passwords/whatevers into the new format. |
| ''' |
| |
| import sys |
| import rsa |
| from rsa import _version133 as insecure |
| |
| (pub, priv) = rsa.newkeys(64) |
| |
| # Construct the encrypted content. You'd typically read an encrypted file or |
| # stream here. |
| cleartext = 'Give me more cowbell' |
| old_crypto = insecure.encrypt(cleartext, pub) |
| print 'Old crypto:', old_crypto |
| print |
| |
| # Decrypt and re-encrypt the contents to make it compatible with the new RSA |
| # module. |
| decrypted = insecure.decrypt(old_crypto, priv) |
| new_crypto = rsa.encrypt(decrypted, pub) |
| |
| print 'New crypto:', new_crypto |
| print |
| |
