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; ... 2019-01-01, 377👍, 1💬

💬 2019-01-01 Yale: Thank you!

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Outdated: Visiting an "https" Web Site with Firefox 3
This section describes how Firefox 3 shows a lock icon when you visit an 'https' Web site to provide you more security related information. 2018-11-10, 126👍, 2💬

💬 2018-11-10 Herong: Falle, try to use whois.icann.org to get more information about that website.

💬 2018-11-10 Falle: Thanks for your help . I couldn't access full information about cardtopia.org a website that scammed me of apple gift cards wort...

Using Google Chrome as an XML Syntax Checker
This section provides a tutorial example on how to use Google Chrome as an XML file syntax checker. If there are syntax errors in an XML file, Chrome will stop displaying the XML file at the first error location. 2018-11-10, 1380👍, 3💬

💬 2018-11-10 Herong: ej, You are right. Chrome can only parse an XML document and print out issues that occur during the parsing process. If you want...

💬 2018-11-08 ej: While the information contained here seems to be correct, I would use the term "well wormedness verification" in place of "synta...

💬 2017-08-11 literal nazi: meaningful comments

Drawing Graphics - Using paint() on Frame
This section provides a tutorial example on how to override the paint() method in the javax.swing.JFrame class to draw graphics (a rectangle) on the frame window. This solution is not recommended. 2018-11-04, 3917👍, 3💬

💬 2016-11-12 SuperSasRabushna: I'm super saiyan!!! rabushna!

💬 2016-11-12 Ciciozxz: I think you are the best eu!

PDF Printing Version: GB2312 Tutorials
Information on how to obtain the PDF version of this book, 'GB2312 Tutorials - Herong's Tutorial Examples', is provided. 2018-11-03, 1835👍, 3💬

💬 2018-08-15 tom: thanks

💬 2016-12-11 hyolin: thanks very much

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, 8444👍, 4💬

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

💬 2017-03-15 noname: thanks

💬 2016-01-25 Dev: hello

Removing IE Addon "Lync Browser Helper"
This section provides a tutorial example on how to disable and remove 'Lync Browser Helper' addon from Internet Explorer. 2018-10-27, 14123👍, 9💬

💬 2018-10-27 Herong: manoj, what is the URL of the web page?

💬 2018-10-27 manoj kumar: internet explore can not didplay the webpage

💬 2017-06-04 Herong: Tech101, can you try to disable the "asktoolbar" add-on within IE 11? Or try to uninstall "asktoolbar" using Control Panel.

💬 2017-06-02 Tech101: Any idea how to remove the asktoolbar from Windows 7 32 and 64 bit .ie11

💬 2017-04-21 Herong: Diana, if you are not using Microsoft Lync anymore, try to uninstall it from "Control Panel > Uninstall a program".

(More comments ...)

PDF Printing Version: Cryptography Tutorials
Information on how to obtain the PDF version of this book for printing. 2018-10-20, 6371👍, 34💬

💬 2018-10-20 Herong: bachi, thanks for sharing your comment.

💬 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

(More comments ...)

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. 2018-10-20, 741👍, 4💬

💬 2018-10-20 Herong: Wendy, thanks for information. Looks like webservicex.net has stopped their Web services.

💬 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...

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. 2018-10-18, 484👍, 4💬

💬 2018-10-18 sam: harry please stop bullying me

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, 371👍, 3💬

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, 4545👍, 2💬

💬 2018-10-11 cxtr: tanks good

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, 1716👍, 1💬

💬 2018-10-11 Jose: Tanks

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, 174👍, 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...

PDF Printing Version: Free Web Services Tutorials
Information on how to obtain the PDF version of this book for printing. 2018-10-04, 755👍, 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, 109👍, 1💬

'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, 543👍, 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...

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, 241👍, 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?

Retrieving CLOB Values with getClob() Method
This section describes how to retrieve CLOB values with the ResultSet.getClob() method. 2018-09-20, 3944👍, 2💬

💬 2018-09-20 sdsfsdfs: hello its me

💬 2015-12-04 asdadsads: hello its me

"bitcoin-cli sendtoaddress" - Send Bitcoin
This section describes how to sent Bitcoins to another address test transaction on live.blockcypher.com. 2018-09-17, 517👍, 4💬

💬 2018-09-17 Herong: Berk, or you can use the "sendfrom" command: sendfrom <fromaccount> <tobitcoinaddress> <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...

SWF File Example - Dump Output
This section provides a tutorial example on how to dump the file structure and list of tags of SWF file using the 'swfdump' command from 'SWFTools'. 2018-09-12, 135👍, 1💬

💬 2018-09-12 jeff: this was so bad

Opening UTF-16LE Text Files
This section provides a tutorial example on how to open a UTF-16LE text file with Nodepad correctly by selecting the Unicode encoding option on the open file dialog box. 2018-09-09, 1198👍, 3💬

💬 2018-09-09 Nit: GIF89a��!�, T;

💬 2018-02-12 Herong: Krishna, dates should have nothing to do with UTF-16 LE format. Can you provide some examples?

💬 2018-02-08 Krishna: When I open a UTF-16 LE file notepad and and notepad ++ ,it is showing special characters for the dates. Is it because notepad +...

HTTPS Communication Data Encryption
This section describes the HTTPS communication data encryption process - Browser generates an encryption key, encrypts it using server public key and sends it to the server; Browser encrypts data with the encryption key; Server encrypts return data with the same encryption key. 2018-09-06, 166👍, 2💬

Listing All Tables - getTables()
This section describes how to get a list of all tables in the current database on the SQL Server through the DatabaseMetaData object. 2018-09-01, 1166👍, 2💬

💬 2018-09-01 Herong: Arthur, thanks for your comment.

💬 2018-08-31 Arthur: When executing this with Oracle it will work. Unless you have several schemas on that database. It will then give you all the ta...

Retrieving CLOB Values with getString() Method
This section describes how to retrieve CLOB values with the ResultSet.getString() method. 2018-09-01, 363👍, 2💬

💬 2018-09-01 Herong: Srikanth, there should no size limitation. CLOB is designed to store very large character strings.

💬 2018-08-21 Srikanth: Is there any size limitation on getString() when used for clob column?

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