PKCS#8 and X.509 Key Encoding Classes

Cryptography Tutorials - Herong's Tutorial Examples

∟PKCS#8/X.509 Private/Public Encoding Standards

∟PKCS#8 and X.509 Key Encoding Classes

This section describes 2 JDK classes: PKCS8EncodedKeySpec representing the PKCS#8 encoding standard and the X.509 encoding standard.

java.security.spec.PKCS8EncodedKeySpec - A sub class of the EncodedKeySpec class represents the ASN.1 encoding of a private key based on the PKCS#8 encoding standard. It has three methods:

PKCS8EncodedKeySpec() - Constructs a PKCS8EncodedKeySpec object from the specified byte array that contains the PKCS#8 encoded private key.
getEncoded() - Returns the encoded key in a byte array of this object.
getFormat() - Returns the name of encoding used in this object.

java.security.spec.X509EncodedKeySpec - A sub class of EncodedKeySpec represents the ASN.1 encoding of a private key based on the X.509 encoding standard. It has three methods:

X509EncodedKeySpec() - Constructs a X509EncodedKeySpec object from the specified byte array that contains the X509 encoded public key.
getEncoded() - Returns the encoded key in a byte array of this object.
getFormat() - Returns the name of encoding used in this object.

Table of Contents

About This Book

Cryptography Terminology

Cryptography Basic Concepts

Introduction to AES (Advanced Encryption Standard)

Introduction to DES Algorithm

DES Algorithm - Illustrated with Java Programs

DES Algorithm Java Implementation

DES Algorithm - Java Implementation in JDK JCE

DES Encryption Operation Modes

DES in Stream Cipher Modes

PHP Implementation of DES - mcrypt

Blowfish - 8-Byte Block Cipher

Secret Key Generation and Management

Cipher - Secret Key Encryption and Decryption

Introduction of RSA Algorithm

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

What Is Key Encoding?

►PKCS#8 and X.509 Key Encoding Classes

java.security.KeyFactory - Reading Encoded Keys

JcaKeyFactoryTest.java - Key Factory Test Program

Reading DSA Private and Public Key Files

Reading RSA Private and Public Key Files

Cipher - Public Key Encryption and Decryption

MD5 Mesasge Digest Algorithm

SHA1 Mesasge Digest Algorithm

OpenSSL Introduction and Installation

OpenSSL Generating and Managing RSA Keys

OpenSSL Managing 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"

Using Certificates in IE

Using Certificates in Google Chrome

Using Certificates in Firefox

Archived Tutorials

Full Version in PDF/EPUB