[Cryptix-users] RSA keys that use the IDEA cipher

[noreen <nor...@gm...>]

Do RSA legacy keys always use key type RSA and the IDEA cipher? How do 
you create an RSA key with cipher=IDEA?

I have included the code so far with the error that was generated:

//create an RSA key
KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance( "RSA" );
this.cipher = Cipher.getInstance("RSA");
keyPairGen.initialize( 1024 );

// use the key to initialize the idea cipher
this.cipher = Cipher.getInstance("IDEA", "CryptixCrypto");
cipher.init( Cipher.ENCRYPT_MODE, keyParirGen.getKeyPair.getPublic() );


CODE OUTPUT
cipher algorithm IDEA   BlockSize=8
KeyPair Algorithm RSA
Key AlgorithmRSA    format= X.509    serialVersionID=-8727434096241101194
Invalid user key length
java.security.InvalidKeyException: Invalid user key length
        at cryptix.jce.provider.cipher.IDEA.makeKey(IDEA.java:156)
        at cryptix.jce.provider.cipher.IDEA.coreInit(IDEA.java:78)
        at cryptix.jce.provider.cipher.ModeECB.coreInit(ModeECB.java:53)
        at cryptix.jce.provider.cipher.Mode.init(Mode.java:115)
        at cryptix.jce.provider.cipher.Padding.init(Padding.java:154)
        at 
cryptix.jce.provider.cipher.BlockCipher.engineInit(BlockCipher.java:286)
        at 
cryptix.jce.provider.cipher.BlockCipher.engineInit(BlockCipher.java:271)
        at javax.crypto.Cipher.init(DashoA13*..)
        at javax.crypto.Cipher.init(DashoA13*..)
        at Crypt.<init>(Crypt.java:44)
        at Crypt.main(Crypt.java:84)