Cryptography Tutorials - Herong's Tutorial Examples
This cryptography tutorial book is a collection of notes and sample codes written by the author while he was learning cryptography technologies himself. Topics include AES, blowfish, certificate, cipher, decryption, DES, digest, encryption, keytool, MD5, OpenSSL, PEM, PKCS#8, PKCS#12, private key, p... 2017-03-02, 11521👍, 2💬
"keytool" Commands and "keystore" Files
This chapter provides tutorial notes and example codes on the 'keytool' command. Topics include introduction of public key certificates, 'keystore' file, 'keytool' command; generating new keys and self-signed certificates; exporting and importing certificates; cloning certificates to share keys. 2015-11-23, 2443👍, 3💬
HttpsClient.java - HTTPS Client Test Program
This section provides a tutorial example on how to write a HTTPS client test program, HttpsClient.java. It sends a simple HTTP request page using the HTTPS protocol. 2015-11-20, 3570👍, 6💬
GetCurrencies - Get Currencies from All Countries and Territories
This chapter provides a quick introduction of the free Web service, GetCurrencies, returning a list of all countries with their currencies in the world. Topics include usage description of GetCurrencies; request message sample; response message sample. 2015-11-19, 483👍, 1💬
"aapt" - Android Asset Packaging Tool
This section describes 'aapt', the Android Asset Packaging Tool, which can be used to list, add and remove files in an APK file, package resources, crunching PNG files, etc. 2015-11-16, 1711👍, 1💬
Synchronization Technique and Synchronized Code Blocks
This chapter provides tutorial notes and tutorial examples on synchronization technique and synchronized code blocks. Topics include what is the synchronization technique; synchronized class methods, instance methods, statement blocks; synchronized banking application sample. 2015-11-13, 213👍, 1💬
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, 932👍, 2💬
GenerateBarCode - Usage Description
This section describes the free Web service GenerateBarCode provided by WebserviceX.NET. GenerateBarCode allows you to generate bar code images in formats of Code 128, Code 39, Code 93, EAN13, Supp2, UPC A, and more. 2015-11-11, 421👍, 1💬
XML Messages over Socket Connections
This section describes the XML message communication model - where client and server send and receive XML messages over socket communication connections. 2015-11-11, 1060👍, 4💬
setMnemonic() - Setting Keyboard Mnemonics on Menu Items
This section provides a tutorial example on how to use setMnemonic() method to associate mnemonics to menu items. Mnemonics allows user to interact with menu items using keys on keyboard. 2015-11-10, 367👍, 1💬
Installing and Running Java DB - Derby
This chapter provides tutorial notes on downloading, installing and setting up Java DB (Derby) server. Topics include downloading and installing Java DB 10.5.3; verifying Java DB execution environment; running Java DB in Network Server mode; using 'ij' to create database and tables. 2015-11-08, 1314👍, 3💬
Using "Process" Class to Show Memory Usages
This section provides a tutorial example on how to retrieve memory usage statistics of your application using methods and properties of the System.Diagnostics.Process class. 2015-11-06, 1037👍, 1💬
Converting Secret Keys to and from Byte Arrays
This section provides a quick introduction of the SecretKeySpec class and the KeySpec interface. They can be used to convert secret keys into byte arrays to store them in external files. 2015-11-03, 3624👍, 1💬
Option Dialog Boxes
This chapter provides tutorial notes and example codes on option dialog box. Topics include creating and displaying message, confirmation, input and option dialog boxes; receiving input values from option dialog boxes; creating and display internal dialog boxes; creating option dialog box directly. 2015-11-02, 235👍, 1💬
UTF-32, UTF-32BE and UTF-32LE Encodings
This chapter provides notes and tutorial examples on UTF-32, UTF-32BE and UTF-32LE encodings. Topics including encoding and decoding logics of UTF-32, UTF-32BE and UTF-32LE encodings; explanation of the use of BOM (Byte Order Mark). 2015-11-01, 246👍, 1💬
Sending and Receiving Cookies - Example
This section provides a tutorial example on how to set and send a cookie with the setcookie() function, and how to receive a cookie with the $_COOKIE array. 2015-10-31, 1014👍, 1💬
Input Text Data from Web Forms
This chapter provides tutorial notes on input text data from Web forms. Topics include creating Web form; receiving input text data with PHP the $_REQUEST array; input text data in ASCII, Latin1 and UTF-8 encoding; entering Latin1 characters with Alt keycodes. 2015-10-29, 227👍, 2💬
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