JDK Tutorials - Herong's Tutorial Examples

∟Cipher - Secret Key Encryption and Decryption

∟DSA Public Key Encryption Tests

This section provides the test result of DSA public key encryption and private key decryption using the javax.crypto.Cipher class.

Here is the result of my first test of JcePublicCipher.java with the DSA algorithm. It was done with JDK 1.8. 

>java JcePublicCipher DSA encrypt dsa.pub JcePublicCipher.java jce.cph

KeyFactory Object Info:
Algorithm = DSA
Provider = SUN version 1.8
toString = java.security.KeyFactory@42e816

Key Object Info:
Algorithm = DSA
Saved File = dsa.pub
Length = 244
Format = X.509
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:     e82a134e b1f8f5ae b40c2709 ccfb9da6 314ef48c ec025a37
               0b7ed86d d35647e2 d3fb17f2 c0ed1bdf dce6ea96 de04a2f6
               8d87666e ed6a1123 588c289a 9ad741ed

Exception: java.security.NoSuchAlgorithmException: Cannot find any 
provider supporting DSA

This tells us that there is no implementation of DSA public key encryption in JDK 1.8.

Last update: 2014.

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 Secret Key Generation and Management

►Cipher - Secret Key Encryption and Decryption

 javax.crypto.Cipher - The Secret Key Encryption Class

 JceSecretCipher.java - Secret Key Encryption Sample Program

 Blowfish and DES Secret Key Encryption Tests

 JcePublicCipher.java - Private and Public Key Encryption

►DSA Public Key Encryption Tests

 RSA Public Key Encryption Tests

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