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I had found bcprov-ext-jdk16-145.jar and bcprov-jdk16-145.zip. I wish to use the IDEA encryption to encrypt XML, but i haven't found any sample of coding in JAVA. Can anyone tell me how to call the methods in org.bouncycastle.jce.provider.symmetric.* to do the IDEA encryption and decryption or where can find sample code? Thank you all.

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this question doesn't look like a security question in its current form, more like a programming question. You may get some answers here, however you may want to look at stackoverflow.com – Rory Alsop♦ Jan 25 '11 at 10:07
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@Rory, I'm not so sure - code for performing encryption is ontopic, I think... That said, for something this niche, he's likely to get answers quicker. However, I've noticed programmers often use cryptographic functions wrong (like, using the wrong cipher mode, getting the padding wrong, etc.) – AviD♦ Jan 26 '11 at 7:20
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@AviD @Rory I agree with AviD. I don't have enough experience to answer this question, but it'd definitely be better to ask security people this question than programmers. – Graham Lee Jan 26 '11 at 15:22

2 Answers

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BouncyCastle is a standard JCE provider, so most Java crypto code will work just fine. You just need to add the provider to java.security... security.provider.6=org.bouncycastle.jce.provider.BouncyCastleProvider I'd recommend using something like OWASP ESAPI instead of using the crypto API directly.

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I don't have special IDEA sample code, but there are some samples on the net for symmetric encryption with bouncy castle. Try this one from the book Beginning Cryptography with Java.

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Oh, sorry for my bad. Christian, i will try it. thank you. – scorp Jan 27 '11 at 9:17

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