Cryptography Tutorials - Herong's Tutorial Examples - v5.42, by Herong Yang
What Is a Certificate?
This section describes what is a certificate - A digitally signed statement from the issuer saying that the public key of the subject has some specific values.
Certificate: A digitally signed statement from the issuer saying that the public key of the subject has some specific values.
The above definition is copied from the JDK documentation. It has a couple of important terms:
X.509 Certificate - A certificate written in X.509 standard format. X.509 standard was introduction in 1988. It requires a certificate to have the following information:
Table of Contents
Introduction to AES (Advanced Encryption Standard)
DES Algorithm - Illustrated with Java Programs
DES Algorithm Java Implementation
DES Algorithm - Java Implementation in JDK JCE
DES Encryption Operation Modes
PHP Implementation of DES - mcrypt
Blowfish - 8-Byte Block Cipher
Secret Key Generation and Management
Cipher - Secret Key Encryption and Decryption
RSA Implementation using java.math.BigInteger Class
Introduction of DSA (Digital Signature Algorithm)
Java Default Implementation of DSA
Private key and Public Key Pair Generation
PKCS#8/X.509 Private/Public Encoding Standards
Cipher - Public Key Encryption and Decryption
OpenSSL Introduction and Installation
OpenSSL Generating and Managing RSA Keys
►OpenSSL Managing Certificates
Generating Self-Signed Certificates
Viewing Components of Certificates
OpenSSL Generating and Signing CSR
OpenSSL Validating Certificate Path
"keytool" and "keystore" from JDK
"OpenSSL" Signing CSR Generated by "keytool"
Migrating Keys from "keystore" to "OpenSSL" Key Files
Certificate X.509 Standard and DER/PEM Formats
Migrating Keys from "OpenSSL" Key Files to "keystore"