Blowfish Cipher Tutorials - Herong's Tutorial Examples - v2.03, by Herong Yang
Crypt::CBC Salted Key Test Cases
Some test cases are provided to run Crypt::CBC with the salted key option. Passphrase can have any length. But salt must be 8 bytes long.
In the previous tutorial, we learned how to use Crypt::CBC module with the Salted Key option. In this tutorial, let's run some test cases with example Perl script presented in the previous tutorial.
Very short (1-byte) passphrase encryption - No problem.
C:\herong>perl Crypt-CBC-Blowfish-Salted-Key.pl \ 11 0000000000000000 0123456789abcdef Crypt::CBC Salted Key - output in Hex: Passphrase (11) Salt (0000000000000000) Plaintext (0123456789abcdef) Creating Crypt::CBC with Passphrase and Salt... Encrypting plaintext... Cipher Output (53616c7465645f5f00000000000000000e2e3d50d7e78d99) Header Name (53616c7465645f5f) Header Value (0000000000000000) Ciphertext (0e2e3d50d7e78d99) Decrypting ciphertext... Decrypted text (0123456789abcdef) Pass Phrase (11) Salt (0000000000000000) IV (d70a0b076d909375)
Very long (80-byte) passphrase encryption - No problem.
C:\herong>perl Crypt-CBC-Blowfish-Salted-Key.pl \ 11223344556677889900...11223344556677889900 0000000000000000 \ 0123456789abcdef Crypt::CBC Salted Key - output in Hex: Passphrase (1122334455667788990011223344556677889900 1122334455667788990011223344556677889900 1122334455667788990011223344556677889900 1122334455667788990011223344556677889900) Salt (0000000000000000) Plaintext (0123456789abcdef) Creating Crypt::CBC with Passphrase and Salt... Encrypting plaintext... Cipher Output (53616c7465645f5f0000000000000000db7f8fb0e94e33a6) Header Name (53616c7465645f5f) Header Value (0000000000000000) Ciphertext (db7f8fb0e94e33a6) Decrypting ciphertext... Decrypted text (0123456789abcdef) Pass Phrase (1122334455667788990011223344556677889900 1122334455667788990011223344556677889900 1122334455667788990011223344556677889900 1122334455667788990011223344556677889900) Salt (0000000000000000) IV (3c05d2f32c8d1d14)
2-block encryption - No problem.
C:\herong>perl Crypt-CBC-Blowfish-Salted-Key.pl \ 1122334455667788 0000000000000000 0123456789abcdeffedcba9876543210 Crypt::CBC Salted Key - output in Hex: Passphrase (1122334455667788) Salt (0000000000000000) Plaintext (0123456789abcdeffedcba9876543210) Creating Crypt::CBC with Passphrase and Salt... Encrypting plaintext... Cipher Output (53616c7465645f5f0000000000000000 8eb0ddf700ee18b1737b88dc8869996b) Header Name (53616c7465645f5f) Header Value (0000000000000000) Ciphertext (8eb0ddf700ee18b1737b88dc8869996b) Decrypting ciphertext... Decrypted text (0123456789abcdeffedcba9876543210) Pass Phrase (1122334455667788) Salt (0000000000000000) IV (eda37dc506202bd2)
Short (1-byte) salt encryption - Getting an error as expected. Salt must be 8 bytes long.
C:\herong>perl Crypt-CBC-Blowfish-Salted-Key.pl \ 1122334455667788 00 0123456789abcdef Crypt::CBC Salted Key - output in Hex: Passphrase (1122334455667788) Salt (00) Plaintext (0123456789abcdef) Creating Crypt::CBC with Passphrase and Salt... Argument to -salt must be exactly 8 bytes long at Crypt-CBC-Blowfish-Salted-Key.pl line 20.
Table of Contents
Installing Crypt::CBC 2.33 with ActivePerl
Crypt::CBC Encryption with Literal Keys
Crypt::CBC Literal Key Error Cases
Crypt::CBC Encryption with Crypt::Blowfish Objects
Crypt::CBC Operation Simulation
Crypt::CBC Encryption Verification
Blowfish CBC 2-Block Test Vectors
Crypt::CBC Prepending IV to Ciphertext
Crypt::CBC Encryption with Salted Keys
►Crypt::CBC Salted Key Test Cases
Crypt::CBC Secret Key and IV Algorithm
Crypt::CBC Encryption with Random Salt
Crypt::CBC Padding Option Tests
Crypt::CBC Blowfish Encryption Summary
OpenSSL "enc -bf-ecb" for Blowfish/ECB Encryption
OpenSSL "enc -bf-cbc" for Blowfish/CBC Encryption
OpenSSL "enc -bf-cfb" for Blowfish/CFB Encryption
OpenSSL "enc -bf-ofb" for Blowfish/OFB Encryption