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What is OFB (Output FeedBack) Operation Mode?
This section describes what is OFB (Output FeedBack) Operation Mode - each plaintext block is XORed with the current output block to be the ciphertext block. The current output block is the encrypted version of the previous output block. 2015-11-13, ∼3411🔥, 2💬

💬 2015-11-13 Ashish: Hello world!

DES (Data Encryption Standard) Cipher Algorithm
This section describes DES (Data Encryption Standard) algorithm - A 16-round Feistel cipher with block size of 64 bits. 2015-11-05, ∼5852🔥, 8💬

💬 2015-11-05 Herong: The Anh, good question. If your key is less than 64 bits, you can pad it with 0 or 1. Or use a hash algorithm to produce 64 bits...

💬 2015-11-04 The Anh: what if my key don't have enough bit?

💬 2015-11-04 Herong: Zaeem, take a look at the source code at Simple Cryptographer - Simple DES/AES Implementation in C#

💬 2015-11-03 zaeem: how to implement on windows form in c#

💬 2015-10-03 Herong: Mihir, what type of algorithm are you looking for?

(More comments ...)

Generating New RSA Key Pairs
This section provides a tutorial example on how to generate a new pair of RSA priviate key and public key using the OpenSSL command line tool. 2015-11-03, ∼1681🔥, 1💬

💬 2015-11-03 Juli: Thanks

Validating a Certificate Path with OpenSSL
This section provides a tutorial example on how to perform validation of a certificate path with the 'openssl verify' command. 2015-10-14, ≈24🔥, 5💬

💬 2015-10-14 Herong: Karnan, if the issuer is a root CA, issuer certificate should be in your trusted certificate store. If the issuer is an intermed...

💬 2015-10-13 karnan: how to get issuer certificate

💬 2015-09-02 Liang: Thanks, Yang, This is a very helpful for understanding the basic concept of Crypto/SSL.

💬 2015-08-14 Chris: If you have to specify an intermediate as trusted, that means the intermediate is not qualified to be a signer.

💬 2015-08-12 Aleksandar Kostadinov: I see a strange thing: openssl verify -CApath . &lt;(cd /tmp ; cat server.pem intermediate.pem) That does not work if interm...

Cipher - Secret Key Encryption and Decryption
This chapter provides tutorial notes and example codes on the cipher process. Topics include the cipher process - data encryption and decryption; the cipher class, javax.crypto.Cipher; the cipher sample program and test results with Blowfish and DES encryption algorithms. 2015-10-13, ∼476🔥, 1💬

DES Key Schedule Algorithm Illustration Program Output
This section provides the execution output of the tutorial Java program, DESSubkeysTest.java, to illustrate how DES key schedule algorithm works. 2015-08-09, ∼2601🔥, 1💬

💬 2015-08-08 nishant nath: I loved it

<< < … 10 11 12 13 14 15   ∑:342  Sort:Rank

Android ASP Astrology Big5 Bitcoin Blowfish Built-in C# Calendar CD-DVD Cheminformatics Chinese Cryptography DES Email Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Neural Network Perl PHP Physics PKI Publication Python REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO