Cryptography Tutorials - Herong's Tutorial Examples - v5.42, by Herong Yang
RSA Public Key Encryption Algorithm
This section describes the RSA public key encryption algorithm. Generating public and private keys used in RSA encryption requires two large prime numbers.
RSA public key encryption algorithm was invented in 1976 by three MIT mathematicians, Ronald L. Rivest, Adi Shamir, and Leonard M. Adleman. The name of the algorithm "RSA" represents the initials of their surnames.
The first part of the RSA algorithm is the public key and private key generation, which can be described as:
The second part of the RSA algorithm is the message encryption and decryption, which can be described as:
To encrypt a message, the sender can follow these steps:
To decrypt a message, the owner of the private key can follow these steps:
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
►Introduction of RSA Algorithm
What Is Public Key Encryption?
►RSA Public Key Encryption Algorithm
Illustration of RSA Algorithm: p,q=5,7
Illustration of RSA Algorithm: p,q=7,19
Proof of RSA Public Key Encryption
Efficient RSA Encryption and Decryption Operations
Proof of RSA Encryption Operation 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
Cipher - Public Key Encryption and Decryption
OpenSSL Introduction and Installation
OpenSSL Generating and Managing RSA Keys
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"