Block Cipher (Encryption) Cheat Sheet
Block CipherINPUT: a plaintext block and a keyOUTPUT: a ciphertext block of same length A block cipher can be inverted (decrypted) with the keyEven if you know the plaintext and ciphertext it should be...
View Articlecheck_log
-------------------Introduction-------------------In mine previous blogs I have discussed how to setup the - Server...
View Articleop5
------------------Download OP5------------------op5-monitor-6.2.0.1-20131024.tar.gz[http://www.op5.com/download-op5-monitor/]------------------Query RPM Package------------------Det finns två rpm i...
View ArticleSELinux
------------What is SELinux Boolean?------------"Booleans allow parts of SELinux policy to be changed at runtime, without any knowledge of SELinux policy writing. This allows changes, such as allowing...
View ArticleInstall and Configure Postfix
# yum install postfix mutt# service postfix start# adduser student# su - student$ mutt1. Press m to create a new message.2. In To write student@server1.example.com3. In Subject write something4. In...
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The Kerberos Protocol
Key Concepts"Kerberos uses symmetric-key cryptography to authenticate users to network services" [1]"The Authentication Server maintain a database of principals and their secret keys." [2]"The secret...
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Text Editor and IDE for Python
Text EditorAtom text editor for free, by the guys behind github - https://atom.io/.Sublime text editor for free, but asks you to pay - https://www.sublimetext.com/.Commercial IDEKomodo IDE has great...
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Using Atom Text Editor for Python
In my previous blog Text Editor and IDE for Python I discussed different editors for Python. Here I will use Atom text editor and install plugin for Python.From Atom open Settings and search for plugin...
View ArticleGetting Started with JSF 2.2 (Java EE 7) in JBoss EAP 7
IntroductionHere is a simple guide to get started with JSF 2.2 development with JBoss EAP 7.MavenLets start with maven war pom for Java EE 7. See also Minimalistic POM for Java EE 7<?xml...
View ArticleData Breach Fin7 Syndicate Hacks Saks Fifth Avenue and Lord & Taylor Stores
"On March 28, 2018, a notorious hacking JokerStash syndicate, also known as Fin7 announced the latest breach of yet another major corporation, with more than five million stolen payment cards offered...
View ArticleVirtual Celebrities.
"Gorgeous, popular, sought-after by brands... but these models on Instagram aren't real. They're digitally created. And to a lot of people, that doesn't matter at...
View Article15-Year-old Finds Flaw in Ledger Crypto Wallet
"A 15-year-old security researcher has discovered a serious flaw in cryptocurrency hardware wallets made by Ledger, a French company whose popular products are designed to physically safeguard public...
View ArticleHow to See the Used Cipher in IE, Chrome and Firefox
How to identify the Cipher used by an HTTPS Connectionhttps://helpcenter.gsx.com/hc/en-us/articles/207831828-How-to-identify-the-Cipher-used-by-an-HTTPS-Connection
View ArticleGetting Started with Elasticsearch, Kibana, X-Pack and SSL/TLS
Introduction ElasticsearchWhy Elasticsearch? "Elasticsearch is a Near Realtime (NRT) search platform." [1]Elasticsearch stores only JSON Object (Document). A JSON Object is built up by name and value...
View ArticleBig Vulnerability hits 7-Zip file archiver
"If you use, you can and should download v18.05 of the popular 7-Zip file archiver. The free to use WinZip replacement has a very critical vulnerability for which all it needed was a specially prepped...
View ArticleEight new Spectre Variant Vulnerabilities for Intel Discovered - four of them...
"News has just started spreading that researchers have sighted another eight Spectre like vulnerabilities in Intel processors, all resemble Spectre, four of them are critical. The new vulnerabilities...
View ArticleHow to Create a Certificate Signature Request (CSR) in Java
import java.io.ByteArrayOutputStream;import java.io.PrintStream;import java.security.KeyPair;import java.security.KeyPairGenerator;import java.security.PrivateKey;import java.security.PublicKey;import...
View ArticleHow to Create a X509 Certificate in Java without BouncyCastle?
IntroductionThe Java Keytool project has most of the code to create x509 certificates in java, but it has dependency to sun class, which are deprecated, which means that they can change. So be...
View ArticleHow to Read PEM or DER Encoded Certificate In Java
import java.io.InputStream;import java.math.BigInteger;import java.nio.file.Files;import java.nio.file.Paths;import java.security.KeyFactory;import java.security.PrivateKey;import...
View ArticleHow to Read PEM PKCS#1 or PKCS#8 Encoded Private Key In Java
import java.io.InputStream;import java.math.BigInteger;import java.nio.file.Files;import java.nio.file.Paths;import java.security.KeyFactory;import java.security.PrivateKey;import...
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