Herong's Tutorial Examples

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, 674👍, 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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Comment Testing Area
What is test testing area for? The testing area is provided to allow visitors to post testing comments. 2015-09-19, 11475👍, 47💬

💬 2019-09-10 diexo: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2019-09-05 sadf: srinath

💬 2019-09-02 123: 123

💬 2019-08-24 香: 香

💬 2019-08-20 gama: beta

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Downloading and Installing Tomcat 7
This section provides a tutorial example on how to download and install Apache Tomcat 7 on a Windows 7 local system. Tomcat 7 requires JDK 1.6.0. 2016-07-16, 11432👍, 5💬

💬 2016-07-16 pradeep: thanks

💬 2016-04-27 Herong: Priyanka, can you post your servletrequest source code here? I will look at it.

💬 2016-04-25 priyanka: i had already done simple servlet program to Tomcat 7.0 and also got output.but when i am doing servletrequest interface(taking ...

💬 2016-02-23 siva: i need this

💬 2015-08-19 dell: ok

HttpsHello.java - HTTPS Server Test Program
This section provides a tutorial example on how to write a HTTPS server test program, HttpsHello.java. It writes back a simple Web page using the HTTPS protocol. 2017-09-20, 10964👍, 23💬

💬 2017-09-20 Herong: Sandeep, you need to create a server certificate in a .jks file first.

💬 2017-09-08 sandeep kumar shukla: I am getting following error while I run the servier program. java.io.FileNotFoundException: herong.jks (The system cannot find ...

💬 2016-09-21 Test: Hello. How are you?

💬 2016-05-21 Herong: Anthony, this example program is missing a logic for communication start and stop conditions on both server and client sides. Ad...

💬 2016-05-19 Anthony: P.S. If you want to claim copyright then you should give permission to use the fragments in applications, which is the point, I ...

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Validating wsse:Password Digest String
This section provides a tutorial example on how the SOAP message receiver should validate the password digest string in the wsse:Password element using the 'Password_Digest = Base64 ( SHA-1 ( nonce + created + password ) )' definition. 2019-06-17, 10949👍, 8💬

💬 2019-06-16 Herong: JOlivas, Thanks for sharing your PHP code examples!

💬 2019-06-16 JOlivas: Example to validate password digest using PHP, assuming that nonce is encoded in base64 we have to decode before to use it. priv...

💬 2016-12-17 Herong: Arun, the nonce value is in the <wsse:Nonce> element. It is usually generated by the client program with random al...

💬 2016-12-14 Arun: Where I can get the nonce value

💬 2016-04-08 Jen: I would like to know where can I get nonce.

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"Err.Raise()" - Raising Your Own Errors
This chapter provides tutorial examples and notes on runtime error handling. Topics include the default error handling behavior; 'On Error Resume Next' and 'On Error GoTo 0' statements; catching errors with (Err.Number > 0); clear Err object with Err.Clear(); raise your own errors with Err.Raise(...... 2016-05-07, 10776👍, 3💬

💬 2016-05-07 Herong: Donald, I don't understand your question. More details please.

💬 2016-05-06 Google Chrome 50.0.2661.94 m: Google Chrome Un navigateur Web conçu pour offrir rapidité, simplicité et sécurité Obtenir de l'aide sur l'utilisation de Goog...

💬 2016-05-06 Donald Duck: Please include a list of the different possible values for number. Thanks☺

Free Chinese Calendar 2016 - Year of the Monkey
Want to know when is the 2016 Chinese New Year day? Looking for Chinese calendars for 2016? Chinese New Year day - February 8, 2016 When is the Chinese New Year's Day in Year 2016? It is on February 8, 2016. Chinese New Year (Chinese: 春節, 春节, Chūnjíe; 農曆新年, 农历新年, Nónglì Xīnnián; or 過年, 过年... 2016-02-24, 10765👍, 2💬

💬 2016-01-07 Herong: Xiaoping, Happy new year to you too! Take a look at the mobile version daily calendar. You may like it too. ☺

💬 2016-01-06 Yi XiaoPing: Hi, Yang HeRong: Happy new year 2016, international people rights road. Thanks for the calendar. yi_xiaoping@yahoo.com

CipherDES.java - A Java Implementation of DES
This section provides a tutorial Java program, CipherDES.java - A Java Implementation of DES encryption and decryption algorithm. 2017-02-16, 10727👍, 9💬

💬 2017-02-16 Herong: Andro, I think implementation of DES using String methods will be slower than using byte and int operations.

💬 2017-02-12 Andro: Good done. I have created my own DES with benefits of string methods in Java. My DES receives binary string and key, then cipher...

💬 2016-03-03 Dede: Helps a lot, currently developping a mobile application that has to do with encryption. Thanks

💬 2015-10-16 Herong: Skip, Good luck on your study!

💬 2015-10-15 Skip: I'm taking a graduate course in cryptography and this was extremely helpful for going from DES visual to DES in java. I really a...

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JDBC-ODBC - Inserting Data Rows to MS Access Database
This section describes how to insert new data rows into MS Access database through the JDBC-ODBC driver. 2017-03-17, 10696👍, 5💬

💬 2016-03-06 Morn: My Testing

💬 2015-08-10 ramya: this website is very useful

HelloServer.php - First SOAP Server Application
This section describes a tutorial example of a complete SOAP application with both server and client programs. 2019-06-03, 10640👍, 4💬

💬 2016-02-15 Sanan: Great !

💬 2016-02-03 ciao: yt

Creating the First JAR File - hello.jar
This section provides a tutorial example on how to create a JAR file with the 'jar' command. 2016-03-02, 10482👍, 1💬

💬 2016-03-02 luis: algun comentario

JDBC-ODBC Bridge Driver - MS Access
This chapter provides tutorial notes on using the JDBC-ODBC Bridge driver with MS Access database. Topics include creating MS Access database file; creating DSN for MS Access database files; inserting rows to and retrieving rows from Access database. 2016-12-22, 10244👍, 11💬

💬 2016-12-22 nhat: need jdbc

💬 2016-12-04 Herong: Sumon, Stay with JDK 7. It has a built-in JDBC=ODBC bridge driver to connect to Access database.

💬 2016-12-03 sumon: To run my access database

💬 2016-05-20 djamo: thenk you

💬 2016-01-11 Mars Chen: thanks for your providing this jar lib

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Base64 Encoding Algorithm
This section describes the Base64 encoding algorithm with some simple encoding examples. 2019-08-16, 10062👍, 19💬

💬 2019-08-16 adarsh: good explanation:)

💬 2019-02-02 Herong: maher, you can decode it manually. For example, the first 4 bytes can be decoded to 3 bytes, 0x9d873d: base64: n, Y, c, 9 decima...

💬 2019-01-30 maher: how can i decode nYc9rsn50kvkUaZ i try many sites that decode base64 no result

💬 2018-01-12 Name: meaningful comments

💬 2017-08-28 bbb: Please write meaningful comments. Thanks! ☺

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Windows 8: Turning on Windows Defender
This section provides a tutorial example on how to turn on Windows Defender for real-time protection on Windows 8 systems. 2016-06-08, 9783👍, 5💬

💬 2016-06-08 Herong: Steve, which part was not working?

💬 2016-06-01 Steve: Didn't work

💬 2016-01-27 Er.Jasim Anamangadan: Thanking you Helped me out Thanks Er.Jasim Anamangadan

💬 2015-08-26 Ivan: Quite easy to follow!

💬 2015-08-07 anonymous: this really helped me !! i googled some of the solutions but it make me go to command prompt.. but this one is very easy and sim...

getSelection() - Getting Selected Button
This section provides a tutorial example on how to use the getSelection() method to know which button is selected in a button group. 2016-06-02, 9513👍, 3💬

💬 2016-02-22 aaa: God is the greatest

💬 2016-02-22 aaa: we are here to learn

What Is DER (Distinguished Encoding Rules) Encoding?
This section describes the DER (Distinguished Encoding Rules) - A binary format of encoding a data value of any data types including nested data structures. 2018-10-29, 9466👍, 4💬

💬 2018-10-29 Thanks!: meaningful comments.

💬 2017-03-15 noname: thanks

💬 2016-01-25 Dev: hello

DES Key Schedule (Round Keys Generation) Algorithm
This section describes DES (Data Encryption Standard) algorithm - A 16-round Feistel cipher with block size of 64 bits. 2018-02-24, 9437👍, 13💬

💬 2018-02-24 Herong: hema, values in the pc-2 table are pre-defined by the algorithm. They are not calculated.

💬 2018-02-23 hema: i understood pc-1 table can you pls guide to calculate manually pc-2 table in des algorithm.

💬 2017-10-24 Herong: QuAI, you are right those bits are not used in the Permuted Choice 1 (PC1) table.

💬 2017-10-19 QuAl: And forget about bits 8, 16, ..., 64 of initial кey K! Those bits for parity check only (see FIPS 46-3)

💬 2017-06-15 Azaz: Not that much useful

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Downloading and Installing JDK 1.8
This section describes how to download and install Java SE Development Kit (JDK) 8u45 on a Windows system. 2019-04-16, 9132👍, 6💬

💬 2019-04-16 yacine: thanks

💬 2017-10-09 Ivan: Thanks!

💬 2017-04-03 prathamesh: greaT

💬 2016-10-24 azeem: thanksa

💬 2016-01-11 hari prasath: collage use

JDBC-ODBC - Connecting to a DSN
This section describes how to connect to a DSN (Data Source Name) with JDBC-ODBC Bridge. 2017-02-28, 8793👍, 3💬

💬 2017-02-28 Munna Shaw: My name is Munna Shaw

💬 2016-04-27 Anish Goel: Thanks a lot!

💬 2015-10-08 manoj soni: satisfied

Converting XML in Pretty Print Format
This section provides a tutorial example on how to convert XML documents into pretty print format using XML Tools Plugin in Notepad++. 2018-02-25, 8645👍, 5💬

💬 2017-05-23 sdsa: soap:ClientUnmarshalling error: cvc-complex-type.2.4.a: Invalid content was found starting with element 'v11:CopyFaresFromFarCl....

💬 2016-08-17 z: Subject_Order 1608_ AFTER [NextExecutionDatetimeCO][ListVMsINe xtExecutionCO]

💬 2016-05-03 dfg: <div class="productdetailpopover adminpopover"> <div class="productimage displayinlineblock"> <div class="m...

JDBC-ODBC - Connecting to MS Access Database Files
This section describes how to connect to a SQL Server 2005 through DSN with JDBC-ODBC Bridge. 2017-05-24, 8495👍, 5💬

💬 2017-05-24 sgat: thanks

💬 2016-11-04 ahmed: thanks

💬 2016-11-04 ahmed: sank you

💬 2015-11-06 Herong: Vous êtes bienvenue! ☺

💬 2015-11-06 azedine: merci pour votre aide

Downloading and Installing JDK 1.6.2 on Windows
This section provides a tutorial example on how to download and install JDK 1.6.2 (Java SE 1.6 Update 2) on a Windows XP system. A simple Java program was entered, compiled, and executed with the new JDK installation. 2018-08-11, 8479👍, 15💬

💬 2018-08-11 mikw: thanks

💬 2017-02-27 sireesha: thanks

💬 2017-02-27 sireesha: Hi, I am admire to this site

💬 2017-01-29 hiiii: hi

💬 2016-10-17 Abhishek: Thanks

(More comments ...)

MD5 Message Digest Algorithm Overview
This section describes the MD5 algorithm - a 5-step process of padding of '1000...', appending message length, dividing as 512-bit blocks, initializing 4 buffers, and 4-round of hashing each block. 2016-11-21, 8349👍, 6💬

💬 2016-11-21 this is a burner: concise and accurate, thanks

💬 2016-09-26 brijesh gupta: its helpful

💬 2016-06-17 Ampera: Makasih

deleteRow() - Deleting Rows through ResultSet Objects
This section describes how to delete rows from target tables through ResultSet objects. 2016-07-13, 7911👍, 2💬

💬 2016-07-13 rahul krishna: good work

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. 2019-04-22, 7894👍, 4💬

💬 2019-04-22 xyz: $9$RTHhSlWL7VsguO7dbw4oiHqf6CuOIRhyl K4JGDq.TQF/OIcyeLXNbsPTz3CAW8X

💬 2018-10-20 Herong: Marco, I just did a Google translation on your comment: "I wonder what all this could be". Are you trying to ask a question?

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

💬 2015-11-03 cpp: hello

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