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BOOK: Beginning Cryptography with Java
This is the forum to discuss the Wrox book Beginning Cryptography with Java by David Hook; ISBN: 9780764596339
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Old May 13th, 2010, 10:46 PM
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Default Great book with 2 questions

hello Mr Hook,
I am Nigel from Asia,hope u will understand my english.

I am a starter in Java and Cryptography
and this book helps me a lot.
this book is really great.

and after reading the whole book,
I have two questions hope u can give me some advices or idea.

the first one is,
i am using eclipse with JDK1.6
For those method which return the X509Certificate in your book, eclipse shows that the return certGen.generateX509Certificate()is Deprecated.
so can i just use generate() to replace those deprecated generateX509Certificate()?
is there anything need to adjust after replacing that method ?

the second one is ,
there are three entity in my system,
1.Server <--internet--> 2.PC <--bluetooth(byte[])--> 3.device,
the secure connection between the 1 and 2 can simply be done after implement the SSL which taught in Ch10.
But the problem is 2 and 3, since socket connection does not exist here,
if i want to upgrade the connection of 2 and 3 to the SSL level,
is there any API ? is there any possible ways to convert ?
or the only way is that I have to try my best to implement the idea of this whole book,
and build the security level that I want
(negotiation + Asym. + sym. + MAC +certicate) by myself ?

I really cant find any useful idea even i google the keyword"bluetooth cryptography"
most of them is just simply symmetry cryptography, and it is not enough for me.
Really thanks for reading this, hope that i can hear from u soon. I would like to thank you one more time, since ur book teach me alot.THANK YOU!

Best regards
Nigel
 
Old June 19th, 2011, 07:15 PM
dgh dgh is offline
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Default

Yes, just use generate, although if you've moved onto 1.46 it would be worth looking at the new classes in org.bouncycastle.cert.

With the second question, I'm not sure what bluetooth standards would be relevant here, but it sounds like you've already done some research on that. If symmetric isn't good enough you'll need to role your own as you suggest.

Regards,

David





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