Herong's Tutorial Examples: Blowfish

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Notes on Physics

EC Cryptography Tutorials - Herong's Tutorial Examples
This EC (Elliptic Curve) cryptography tutorial book is a collection of notes and sample codes written by the author while he was learning cryptography technologies himself. Topics include rule of chord and point addition on elliptic curves; Abelian groups with additive and multiplicative notations; ... 2019-07-06, 913👍, 3💬

💬 2019-07-02 Eleftheria Drosopoulou: Hello Herong, Nice blog! I am editor at Java Code Geeks (www.javacodegeeks.com). We have the JCG program (see www.javacodegeeks....

💬 2019-01-01 Yale: Thank you!

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Blowfish Cipher Test Vectors
A list of test vectors is provided for the 16-round and 64-bit block Blowfish cipher algorithm. 2018-09-22, 365👍, 3💬

💬 2018-09-22 Herong: Codesmith, Thanks for the confirmation.

💬 2018-09-17 Codesmith: Having tested both, it seems the standard Blowfish algorithm is actually big-endian, as big-endian interpretation works for thes...

💬 2018-09-17 Codesmith: I presume these vectors are interpreted in little endian when being converted to pairs of 32bit values?

Perl Crypt::Blowfish Module
Tutorial notes and example codes on Crypt::Blowfish Perl Module. Topics include introduction of Crypt::Blowfish; Download and installation; Behavior tests; Test vector verification; Building 128-bit key test vectors. 2016-11-14, 232👍, 1💬

💬 2016-11-14 martin: expretion of some one to the things done on him

piqpr8.c - Generating Hex Digits of PI
A C source code is provided to generate hexadecimal digits of the fractional part of PI (0.1415927...) using the BBP (Bailey–Borwein–Plouffe) formula. 2016-03-25, 867👍, 1💬

💬 2016-03-25 Mike: Testing answer

Crypt::CBC Encryption with Salted Keys
A tutorial Perl example is provided to show how to use Crypt::CBC to perform encryption with a passphrase and a salt, which will be used to derive the secret key and the IV. 2015-12-20, 430👍, 1💬

💬 2015-12-20 Ed: Great tutorial. It helped me solving my problem. Many thanks!

Blowfish Decryption Algorithm
This section describes the Blowfish decryption algorithm, which is identical to the encryption algorithm step by step in the same order, only with the sub-keys applied in the reverse order. 2015-09-12, 220👍, 1💬

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