Blowfish Cipher Tutorials - Herong's Tutorial Examples - v2.03, by Herong Yang
Blowfish Cipher Tutorials - Herong's Tutorial Examples
https://www.herongyang.com/Blowfish
Copyright © 2012-2022 Herong Yang. All rights reserved.
This tutorial book is a collection of notes and sample codes written by the author while he was learning Blowfish cipher himself. Topics basic concepts of cipher and encryption; introduction of Blowfish cipher algorithm; 8366 Hex Digits of PI; Perl Crypt::Blowfish and Crypt::CBC, Crypt::CFB modules; OpenSSL Blowfish ciphers: bf-ecb, bf-cbc, bf-cfb, bf-ofb; PHP Mcrypt extension; Blowfish CFB-8 and OFB-8 operation modes. Updated in 2022 (Version v2.03) with minor changes.
Table of Contents
Blowfish Cipher Encryption Algorithm
Key Schedule (Sub-Keys and S-Boxes) Algorithm
Efficient Form of the Blowfish Algorithm
Blowfish Cipher Decryption Algorithm
Proof of Blowfish Cipher Algorithm
First 8336 Fractional Hex Digits of PI
piqpr8.c - Generating Hex Digits of PI
Installing Crypt::Blowfish 2.14 with ActivePerl
Crypt::Blowfish Behavior Tests
Secret Keys with Repeating Pattern
Crypt::Blowfish Verification with Test Vectors
Blowfish Test Vectors with 16-Byte Keys
Installing Crypt::ECB 1.45 with ActivePerl
Crypt::ECB Encryption with No Padding
Crypt::ECB Encryption Test Cases
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
Installing OpenSSL for Windows
OpenSSL "enc" Blowfish Ciphers
Ways to Control Secret Key and IV
"bf-ecb" Cipher with Literal Key
"bf-ecb" Cipher on Multiple Blocks
Secret Key Padding and Truncation
"bf-ecb" Cipher with Salted Key
Salted Key Generation Algorithm
"bf-ecb" Cipher with Random Salt
OpenSSL Default Padding - PKCS#5
OpenSSL "enc -bf-cbc" for Blowfish/CBC Encryption
"bf-cbc" Cipher with Literal Key
"bf-cbc" Cipher on Multiple Blocks
"bf-cbc" Encryption Verification
"bf-cbc" Cipher with Salted Key
"bf-cbc" Cipher with Random Salt
OpenSSL "enc -bf-cfb" for Blowfish/CFB Encryption
OpenSSL "enc -bf-ofb" for Blowfish/OFB Encryption
PHP Mcrypt Extension for Blowfish
PHP Mcrypt Blowfish Block Cipher
Mycrypt Blowfish Block Chaining Cipher
"ncfb/nofb" for Block Chaining Ciphers
Performing CFB Operation Manually
Keywords: Blowfish, Cipher, Encryption