Cryptography Tutorials - Herong's Tutorial Examples - v5.42, by Herong Yang
DiffieHellman Private Key and Public Key Pair Sample
This section provides a tutorial example on how to run JcaKeyPair.java to generate a DiffieHellman private key and public key pair sample. Keys are stored PKCS#8 and X.509 encoding formats.
Now let's see the private key and public key generated by the DiffieHellman algorithm:
herong> java JcaKeyPair 512 diff DiffieHellman KeyPairGenerator Object Info: Algorithm = DiffieHellman Provider = SunJCE version 12 Key Size = 512 toString = java.security.KeyPairGenerator$Delegate@89fbe3 Private Key Info: Algorithm = DH Saved File = diff.pri Size = 212 Format = PKCS#8 toString = SunJCE Diffie-Hellman Private Key: x: 1cdeaf4b 7ce125ff 405952a0 f2d0808e 3dcfb444 bceaebea 438e11b5 5db2a340 970d3aa8 bd04d347 0c01bc61 7383965e p: fca682ce 8e12caba 26efccf7 110e526d b078b05e decbcd1e b4a208f3 ae1617ae 01f35b91 a47e6df6 3413c5e1 2ed0899b cd132acd 50d99151 bdc43ee7 37592e17 g: 678471b2 7a9cf44e e91a49c5 147db1a9 aaf244f0 5a434d64 86931d2d 14271b9e 35030b71 fd73da17 9069b32e 2935630e 1c206235 4d0da20a 6c416e50 be794ca4 l: 384 Public Key Info: Algorithm = DH Saved File = diff.pub Size = 226 Format = X.509 toString = SunJCE Diffie-Hellman Public Key: y: 47c4fb37 511b7185 c1c67cbf c90d9d64 5ee34431 64097cac ee26b779 acd54a41 296bdf75 b93b7f2b 90052d35 e26e2204 6e562b03 3519cd94 2cddebe8 f96a97e1 p: fca682ce 8e12caba 26efccf7 110e526d b078b05e decbcd1e b4a208f3 ae1617ae 01f35b91 a47e6df6 3413c5e1 2ed0899b cd132acd 50d99151 bdc43ee7 37592e17 g: 678471b2 7a9cf44e e91a49c5 147db1a9 aaf244f0 5a434d64 86931d2d 14271b9e 35030b71 fd73da17 9069b32e 2935630e 1c206235 4d0da20a 6c416e50 be794ca4 l: 384 herong> java -cp . HexWriter diff.pri diff_pri.hex herong> more diff_pri.hex 3081D102010030819706092A864886F7 0D010301308189024100FCA682CE8E12 CABA26EFCCF7110E526DB078B05EDECB CD1EB4A208F3AE1617AE01F35B91A47E 6DF63413C5E12ED0899BCD132ACD50D9 9151BDC43EE737592E170240678471B2 7A9CF44EE91A49C5147DB1A9AAF244F0 5A434D6486931D2D14271B9E35030B71 FD73DA179069B32E2935630E1C206235 4D0DA20A6C416E50BE794CA402020180 043202301CDEAF4B7CE125FF405952A0 F2D0808E3DCFB444BCEAEBEA438E11B5 5DB2A340970D3AA8BD04D3470C01BC61 7383965E herong> java -cp . HexWriter diff.pub diff_pub.hex herong> more diff_pub.hex 3081DF30819706092A864886F70D0103 01308189024100FCA682CE8E12CABA26 EFCCF7110E526DB078B05EDECBCD1EB4 A208F3AE1617AE01F35B91A47E6DF634 13C5E12ED0899BCD132ACD50D99151BD C43EE737592E170240678471B27A9CF4 4EE91A49C5147DB1A9AAF244F05A434D 6486931D2D14271B9E35030B71FD73DA 179069B32E2935630E1C2062354D0DA2 0A6C416E50BE794CA402020180034300 024047C4FB37511B7185C1C67CBFC90D 9D645EE3443164097CACEE26B779ACD5 4A41296BDF75B93B7F2B90052D35E26E 22046E562B033519CD942CDDEBE8F96A 97E1
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
Private and Public Keys and Related Interfaces
KeyPair and KeyPairGenerator Classes
Key Pair Sample Program - JcaKeyPair.java
DSA Private Key and Public Key Pair Sample
RSA Private Key and Public Key Pair Sample
►DiffieHellman Private Key and Public Key Pair Sample
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"