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, 382👍, 1💬

💬 2019-01-01 Yale: Thank you!

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Block Hash Calculation in Python
This section describes how to calculate Bitcoin block hash in Python. 2018-02-16, 345👍, 1💬

💬 2018-02-16 Lee: This helped me a lot!

Command Line Console Registry Tool - "reg.exe"
This section provides a quick description of the command line registry management tool: 'reg.exe'. 2018-02-07, 390👍, 1💬

💬 2018-02-07 unknown: REG add HKCU\Software\Policies\Microsoft\Win dows\System/v DisableCMD /t REG_DWORD /d 0 /f

Printable Copy - PDF Version
Information on how to obtain the PDF version of this book for printing. 2018-02-07, 1687👍, 5💬

💬 2017-01-08 Herong: Rex, see my email to your qq.com account.

💬 2017-01-08 rex: how to download this book

💬 2015-09-09 mani: require more details

JDBC-ODBC - Creating a MS Access Database File
This section describes how to create a MS Access database file to be used for ODBC MS Access driver testing. 2018-02-07, 2645👍, 4💬

💬 2017-06-20 Musa: Hi

💬 2015-10-25 kaushal: nice job for solving jdbc connection problem

Retrieving BLOB Values with getBlob() Method
This section describes how to retrieve BLOB values with the ResultSet.getBlob() method. 2018-02-03, 233👍, 2💬

💬 2018-02-03 Herong: sibani, Thanks for the comment.

💬 2018-01-06 sibani: you made it so.. simple.Thank u

"OpenSSL" Generating CA's Private Key
This section provides a tutorial example on how to use OpenSSL to generate a RSA private key of 2048 bit long with OpenSSL. This key will be used as the CA's private key and must stored securely in a file with password protection. 2018-02-03, 1196👍, 1💬

💬 2018-02-03 atomic.kidd: most Excellent Herong for this sharing of excellent Informations. Even the openssh documentation is not up to date nor as accura...

Removing IE Addon "Shockwave Flash Object"
This section provides a tutorial example on how to disable and remove 'Shockwave Flash Object' addon from Internet Explorer. 2018-02-01, 1003👍, 2💬

💬 2017-08-09 Julia: Good advice. Now we'll see if it works.

Accessing Array Elements with Indexes
This section provides a tutorial example on how to access array elements with element indexes. 2018-02-01, 123👍, 1💬

Character Encoding in Java
This chapter provides notes and tutorial examples on character encoding in Java. Topics including supported encodings in Java SE 7; using encoding and decoding methods; examples of encoded byte sequences of various encodings. 2018-01-30, 739👍, 2💬

💬 2018-01-30 Sunny: www.youtube.com

💬 2017-07-14 kev: hi

GB2312Unicode.java - GB2312 to Unicode Mapping
GB2312Unicode.java is a Java program that generates a table to map all GB2312 characters from GB2312 Codes to Unicode Codes. 2018-01-27, 504👍, 1💬

💬 2018-01-27 kill_time: hehe，

Creating Connections with DataSource Class
This section describes how to create connection objects with the DataSource class. 2018-01-25, 451👍, 1💬

💬 2018-01-25 subodh: very good example

Installing NMake 1.5
This section provides a tutorial example on how to install the 'make' utility on Windows, NMake 1.5, to help installing the RPC::XML Perl module. 2018-01-25, 5426👍, 19💬

💬 2017-11-16 Ye Hongshaui: Very good

💬 2017-11-02 lxddd: thank you very much!

💬 2017-08-18 zhaogt: verry good!

💬 2017-05-20 qws: Very good

💬 2017-02-14 xiaoluo: i need to download it

(More comments ...)

printenv.pl - Testing Perl CGI Environment
This section provides a tutorial on how to modify the Perl CGI test script, printenv.pl, and run it to verify Apache 2 Perl CGI configuration. 2018-01-21, 139👍, 3💬

H (Hybrid) Language
This free book is a collection of notes on developing a new programming language called H (Hybrid). 2018-01-21, 441👍, 1💬

💬 2017-10-18 Evan: I like it!

"openssl enc" Converting Keys from Binary to PEM
This section provides a tutorial example on how to convert a private and public key pair stored in binary PKCS#8 format into PEM (Privacy Enhanced Mail) format with the 'openssl enc' command. 2018-01-20, 974👍, 2💬

💬 2018-01-20 Herong: Dan, Thanks for comment. The "-inform" and "-outform" options are definitely better options. This tutorial will be updated.

💬 2018-01-17 Dan Lukes: openssl dsa understands binary key's format as well. Just claim it using option '-inform DER'. Moreover, 'openssl dsa -inform DE...

cgi-lib.pl - The Standard Library for CGI Scripts
This section describes the de facto standard library, cgi-bin.pl, for Perl CGI scripts. It also provides a tutorial on how to download and install cgi-bin.pl 2.18 to the Apache server on a Windows system. 2018-01-20, 269👍, 2💬

💬 2018-01-20 Herong: Nils, Thanks for your comments. I will include them in the next update.

💬 2018-01-09 Nils Kammenhuber: DON'T use cgi-lib.pl! It is horribly outdated, the last version is from 1999, and it is said to have security issues. Instead, u...

Create Tables with CLOB Columns
This section describes how to create tables with CLOB (LONGTEXT) columns in MySQL server. 2018-01-20, 4626👍, 2💬

💬 2018-01-06 Herong: AAA, what is the this statement for?

💬 2018-01-02 AAA: update MyriadReport mr set Construction_Quality_Sql = CONCAT( "select ConstructionQuality from building bg where bg.CMMContainer...

DES Decryption Algorithm
This section describes DES decryption algorithm - identical to the encryption algorithm step by step in the same order, only with the subkeys applied in the reverse order. 2018-01-20, 1499👍, 2💬

💬 2017-12-16 Herong: deepak, is this a encrypted comment?

💬 2017-12-11 deepak: 9bc94bbaf6d380eb8f8c6548b2cf6343ccef 5978768e3d69b796d6ef0839172b

java.time.Duration - Time Durations
This section describes the java.time.Duration class that represents a duration of time measured in seconds with fractions in nanosecond resolution. 2018-01-03, 388👍, 1💬

💬 2018-01-03 Nikhil Narayanan: Helpful man....but I already knew the stuff....the presentation is simple..nice! JAVA is great, right!

2-Step Message Encryption - Symmetric and RSA
This section describes how SoapUI performs the SOAP message entryption in 2 steps: encrypt the SOAP message with random secret key and encrypt the secret key with receiver's RSA public key. 2017-12-31, 288👍, 1💬

💬 2017-12-31 Alex-RU: Thank you, a good man.

Variable Declaration and "Dim" Statement
This section provides a quick introduction of what is a variable and how variable can be declared explicitly with a Dim statement and implicitly with an assignment statement. 2017-12-30, 3437👍, 3💬

💬 2014-12-14 Herong: Peter, Yes, you are correct. DIM is an abbreviation for "Declare in Memory", see "Siebel VB Language Reference" published by Ora...

💬 2014-12-01 Peter: Ehm DIM stands for "dimension"? Or perhaps it's an abbreviation for "Declare in memory"..

File_Input_Output_Test.php - File Input/Output Examples
This section provides a tutorial example script on how to use file input and output functions like fopen(), fread(), fwrite(), and fclose(). The example script copies any file in binary mode. 2017-12-28, 144👍, 3💬

Downloading and Installing soapUI 3.0.1
This section provides a tutorial example on downloading and installing soapUI 3.0.1 on Windows system. 2017-12-27, 1713👍, 5💬

💬 2017-12-27 Aldo: 10 Points !

💬 2017-07-25 apple: 急需！！

💬 2015-09-08 Abdul Latheef: Need SoapUI.

💬 2015-07-29 b vijay: good

OpenSSL Introduction and Installation
This chapter provides tutorial notes and example codes on OpenSSL. Topics include introduction of OpenSSL; installing OpenSSL on Windows systems. 2017-12-24, 872👍, 4💬

💬 2016-11-28 musa: thanks

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