Cryptography Tutorials - Herong's Tutorial Examples - v5.42, by Herong Yang
Reading DSA Private and Public Key Files
This section provides a tutorial example on running the test program JcaKeyFactoryTest.java to generate, write, read and convert DSA private and public keys.
Here is the result of my first test on JcaKeyFactoryTest.java for DSA private and public keys.
herong> javac JcaKeyFactoryTest.java herong> java JcaKeyFactoryTest 512 dsa DSA KeyPairGenerator Object Info: Algorithm = DSA Provider = SUN version 12 Key Size = 512 toString = sun.security.provider.DSAKeyPairGenerator@10d448 Private Key Info: Algorithm = DSA Saved File = dsa.pri Length = 201 Format = PKCS#8 toString = Sun DSA Private Key parameters: p: fca682ce 8e12caba 26efccf7 110e526d b078b05e decbcd1e b4a208f3 ae1617ae 01f35b91 a47e6df6 3413c5e1 2ed0899b cd132acd 50d99151 bdc43ee7 37592e17 q: 962eddcc 369cba8e bb260ee6 b6a126d9 346e38c5 g: 678471b2 7a9cf44e e91a49c5 147db1a9 aaf244f0 5a434d64 86931d2d 14271b9e 35030b71 fd73da17 9069b32e 2935630e 1c206235 4d0da20a 6c416e50 be794ca4 x: 7bede213 af9e4dea 58ec0c53 da77353a a136804b Public Key Info: Algorithm = DSA Saved File = dsa.pub Length = 244 Format = X.509 toString = Sun DSA Public Key Parameters: p: fca682ce 8e12caba 26efccf7 110e526d b078b05e decbcd1e b4a208f3 ae1617ae 01f35b91 a47e6df6 3413c5e1 2ed0899b cd132acd 50d99151 bdc43ee7 37592e17 q: 962eddcc 369cba8e bb260ee6 b6a126d9 346e38c5 g: 678471b2 7a9cf44e e91a49c5 147db1a9 aaf244f0 5a434d64 86931d2d 14271b9e 35030b71 fd73da17 9069b32e 2935630e 1c206235 4d0da20a 6c416e50 be794ca4 y: e65f49f0 e5e41323 35a63e1e c0871f48 67d512d9 b54b8c82 218edba8 e32e236e 2bf3def4 1ac14365 38427c83 0ea43b9d c3dc737e dddd0200 6151c422 e5f15905 KeyFactory Object Info: Algorithm = DSA Provider = SUN version 1.6 toString = java.security.KeyFactory@13e205f Private Key Info: Algorithm = DSA Saved File = dsa.pri Length = 201 toString = Sun DSA Private Key parameters:DSA p: fca682ce 8e12caba 26efccf7 110e526d b078b05e decbcd1e b4a208f3 ae1617ae 01f35b91 a47e6df6 3413c5e1 2ed0899b cd132acd 50d99151 bdc43ee7 37592e17 q: 962eddcc 369cba8e bb260ee6 b6a126d9 346e38c5 g: 678471b2 7a9cf44e e91a49c5 147db1a9 aaf244f0 5a434d64 86931d2d 14271b9e 35030b71 fd73da17 9069b32e 2935630e 1c206235 4d0da20a 6c416e50 be794ca4 x: 7bede213 af9e4dea 58ec0c53 da77353a a136804b
Public Key Info: Algorithm = DSA Saved File = dsa.pub Length = 244 toString = Sun DSA Public Key Parameters:DSA p: fca682ce 8e12caba 26efccf7 110e526d b078b05e decbcd1e b4a208f3 ae1617ae 01f35b91 a47e6df6 3413c5e1 2ed0899b cd132acd 50d99151 bdc43ee7 37592e17 q: 962eddcc 369cba8e bb260ee6 b6a126d9 346e38c5 g: 678471b2 7a9cf44e e91a49c5 147db1a9 aaf244f0 5a434d64 86931d2d 14271b9e 35030b71 fd73da17 9069b32e 2935630e 1c206235 4d0da20a 6c416e50 be794ca4 y: e65f49f0 e5e41323 35a63e1e c0871f48 67d512d9 b54b8c82 218edba8 e32e236e 2bf3def4 1ac14365 38427c83 0ea43b9d c3dc737e dddd0200 6151c422 e5f15905
The program seems to be working:
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
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
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"