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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.
2018-10-16, 5724👍, 2💬

💬 2018-10-16 Marco: mi chiedo che cosa potrebbe essere tutto questo

💬 2015-11-03 cpp: hello

'native2ascii' - Encoding Converter Command and Options
This section describes the native-to-ASCII encoding converter 'native2ascii' and its options. Non-ASCII characters in a Java source file must be converted into \udddd Unicode sequences before giving it to the Java compiler.
2018-10-14, 1100👍, 9💬

💬 2018-10-14 nb bbb: \u00c9=-~-~[],\u00f3=-~\u00c9,\u00cb =\u00c9<<\u00c9,\u00fe=\u00cb+ ~[];\u00cc=(\u00f3-\u00f3)[\u00db=(' '+{})[\u00c9+\u00f3]...

💬 2018-08-17 sd: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2018-03-06 34: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2017-12-06 Joker: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2017-03-21 Ashish: It is good for learn

PDF Printing Version: Cryptography Tutorials
Information on how to obtain the PDF version of this book for printing.
2018-10-13, 5974👍, 33💬

💬 2018-10-13 bachi: I like how you composed your content. I like how you explain the DES algorithm

💬 2018-09-12 aaa: thanks

💬 2018-01-21 ahmed: thanks for your sharing

💬 2017-08-18 yamai: how can I design a java program

💬 2017-08-15 James Deam: Thanks! Amazing..

(More comments ...)

Including VBScript Codes with HTML "script" Tags
This section provides a quick description of how to include VBScript codes into HTML documents with 'script' tags. A tutorial example is provided on calling a function defined in the 'head' tag.
2018-10-11, 363👍, 3💬

💬 2018-10-11 gfdgf: guiuknhgy7u

Downloading and Installing JRockit R28.2.7
This section provides a tutorial example on how to download and install Oracle JRockit 6 R28.2.7 on Windows systems.
2018-10-11, 4206👍, 2💬

💬 2018-10-11 cxtr: tanks good

💬 2015-08-11 hgfhfg: gjhg

Using "adb logcat" Command for Debugging
This chapter provides tutorial notes on the 'adb logcat' command. Topics include using 'adb logcat' command options and arguments; viewing log buffers: main, events, and radio; creating rotated log files; control log format as 'brief' or 'long'; filtering out log entries by priority and process tag;...
2018-10-11, 136👍, 1💬

💬 2018-10-11 Jose: Tanks

ReadParse() - Parsing Web Form Input Values
This section describes functions provided in the CGI library, cgi-bin.pl. It also provides a tutorial example on how to use the ReadParse() to parse Web form input values and other functions.
2018-10-08, 1488👍, 5💬

💬 2018-10-08 asdf: good

💬 2017-08-29 gerry: coo tutorial

💬 2015-10-30 Herong: Thank you, Yair. Your comment shows that form input values are processed correctly on my site for Hebrew language.

💬 2015-10-21 יאיר: שלום

GetCountries - Usage Description
This section describes the free Web service GetCountries provided by WebserviceX.NET. GetCountries allows you to retrieve names of all countries and territories in the world.
2018-10-06, 553👍, 3💬

💬 2018-10-06 Wendy: http://www.webservicex.net/ is not working.

💬 2017-01-08 Herong: Bessie, thanks for sharing the information.

💬 2017-01-07 Bessie: For SoapUI 5.3 on Mac OSX, these steps got me the project: - File > Create Empty Project (for me it made Project 3) - right-clic...

Outdated: IE 8 Displaying Certificate Error Page
This section provides a tutorial example showing that IE 8 fails to validate an HTTPS server certificate and displays a certificate error page.
2018-10-06, 127👍, 2💬

💬 2018-10-06 Herong: Onur, Maybe the auto-install root CA certificate function has been turned off on your Win7 system. But you can always do it manu...

💬 2018-09-25 Onur: I use IE8 with Win7 x64 and i got SSL certificate error while accessing sites issued with Digicert Global Root CA "G2" certifica...

"keytool" Exporting Certificates in DER and PEM
This section provides a tutorial example on how to export certificates in DER and PEM format using the 'keytool -exportcert' command.
2018-10-06, 19576👍, 4💬

💬 2018-10-06 Herong: Srinivas, what are those special characters? Are they appended to the keystore file or the certificate file?

💬 2018-09-25 Srinivas: After generating certificate, there are some special characters appended.

💬 2016-06-27 Herong: Mandar, can you double check your command? The error indicates you entered a wrong password.

💬 2016-06-23 Mandar: converting to der is sucessful. while converting to pem, I am getting below error. keytool error: java.io.IOException: Keystore ...

Introduction to DES Algorithm
This chapter provides tutorial examples and notes about DES (Data Encryption Standard) algorithm. Topics include description of block cipher, DES encryption algorithm, Round Keys Generation, DES decryption algorithm.
2018-10-05, 184👍, 3💬

💬 2018-10-05 dg: fgu

PDF Printing Version: Free Web Services Tutorials
Information on how to obtain the PDF version of this book for printing.
2018-10-04, 685👍, 4💬

💬 2018-10-04 basha: very good knowledge

💬 2016-09-20 dev: nice

💬 2015-10-19 peter: no comments

Literal Formats for Integers - Example
This section provides a tutorial example on how to use integer literals in 4 formats: decimal, hex, octal and binary.
2018-10-02, 108👍, 1💬

💬 2018-10-02 iaaaaN HJKO: jhJ hfsjkl ASFHJKL

Passing Values between JSP Pages
This section provides a tutorial example on how to use different ways to pass values between JSP pages: putting values in 'session' or 'application' objects, or putting values at the end of redirect URL.
2018-09-28, 763👍, 4💬

💬 2018-09-28 rfg: dg

Downloading Apache HTTP Server 2.2.25 for Windows
This section describes how to download Apache (HTTP Server) 2.2.25 binary distribution for Windows systems.
2018-09-25, 3124👍, 11💬

💬 2018-09-25 fgd: dfgfg

💬 2018-09-07 1234: aaaaa

💬 2018-09-07 lijun: duo xie

💬 2018-03-30 ywb: 体验

💬 2018-02-28 黄先生: 多谢

(More comments ...)

'jstat -gcutil' - Garbage Collection Statistics
This section provides a tutorial example on how to use the 'jstat -gcutil' command to get garbage collection statistics against a specified JVM process ID.
2018-09-22, 164👍, 2💬

💬 2018-09-22 Herong: Jagan, "jstat" is for Windows system only. You need to use vmstat or iostat on Oracle Solaris or Linux operating system.

💬 2018-09-22 jagan: cd /usr/java/jdk1.8.0_172/bin/j jar jarsigner java javac java-rmi.cgi jcmd jdeps jjs jps jrunscript jstat is not there.. what we...

Get Free Ether from faucet.metamask.io
This section describes how to get some free Ether form faucet.metamask.io.
2018-09-22, 155👍, 2💬

💬 2018-09-22 Herong: Jose, you can not withdraw Ether money from the Ropsten Test network. It has no real value.

💬 2018-09-19 Jose guzman: Hey, how can i withdraw that?

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, 149👍, 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?

'native2ascii' - Native-to-ASCII Encoding Converter
This chapter provides tutorial notes on the native-to-ASCII encoding converter 'native2ascii'. Topics include 'native2ascii' command options, default encoding CP1252 used by 'javac', converting UTF-8 characters into \udddd Unicode code sequences, converting \udddd sequences back to native encodings.
2018-09-21, 2412👍, 21💬

💬 2018-09-21 rauhat: &lt;script>alert('1')&lt;/sc ript>

💬 2018-05-08 asdf: Lancement d'une campagne permis de conduire le

💬 2018-03-26 Lety: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2018-03-11 Herong: Vishal, show us the string you want to decode.


(More comments ...)

Loading JDBC Driver for MySQL Server
This section describes how to load the MySQL JDBC driver class - mysql-connector-java-5.1.36-bi n.jar.
2018-09-20, 4529👍, 4💬

💬 2018-09-20 raj: hatt budbak aisa kuch nahin hota bakwas hai ye program

💬 2017-09-16 vivek sharma: good

💬 2017-01-14 Herong: Thanks for the nice comment! ☺

💬 2017-01-13 jasonts2000: Thank you, this is the best example of how to test a JDBC connection to mysql that I have seen posted

Web Server Log File Samples - IIS and Apache
This section provides a quick introduction of Web server log files with examples of IIS and Apache servers.
2018-09-20, 11961👍, 15💬

💬 2018-09-20 santi: Thanks!

💬 2018-09-19 Natapatchara: Thanks

💬 2018-03-10 Mahesh: thanks

💬 2017-12-24 Su Su: Thanks

💬 2017-11-20 Guna: Thanks

(More comments ...)

Retrieving CLOB Values with getClob() Method
This section describes how to retrieve CLOB values with the ResultSet.getClob() method.
2018-09-20, 3637👍, 2💬

💬 2018-09-20 sdsfsdfs: hello its me

💬 2015-12-04 asdadsads: hello its me

Downloading and Installing Visual C# 2010 Express
This section provides a tutorial example on how to download and install Microsoft Visual C# 2010 Express edition on Windows systems.
2018-09-18, 3074👍, 11💬

💬 2018-09-18 fang: i want to study C# , thank you for your support to us this soft

💬 2018-08-16 bean: very intesting

💬 2018-08-08 Macci Louis: very intesting

💬 2018-08-08 Macci: I like very much this application.

💬 2018-06-08 SIMPLOS: COOL

(More comments ...)

"bitcoin-cli sendtoaddress" - Send Bitcoin
This section describes how to sent Bitcoins to another address test transaction on live.blockcypher.com.
2018-09-17, 182👍, 4💬

💬 2018-09-17 Herong: Berk, or you can use the "sendfrom" command: sendfrom &lt;fromaccount> &lt;tobitcoinaddress> &lt;amount>

💬 2018-09-16 Berk: Thank you for replying. How to set default account?

💬 2018-09-15 Herong: Berk, To send bitcoin from Test 1 to Test 2, you need to: Set default account to Test 1. Get the address of Test 2. Run sendtoad...

💬 2018-09-12 Berk: How to sent by from wallet? I want to send by wallet to target wallet. For example: C:\>\local\bitcoin-0.15.1\bin\bitcoi n-cli.ex...

1 2 3 4 5 6 > >>   Sort: Rank