PGP 처리 중 오류

1. PGP 암호화 중 아래 에러

org.bouncycastle.openpgp.PGPException: exception encrypting session key
java.security.InvalidKeyException: Illegal key size or default parameters

=> key가 JDK/JRE 에 지정된 key size보다 커서 그래.

After google the web, I finally know this is actually caused by JDK/JRE security policy because
JDK/JRE has restricted key size. I choose ELGAMAL with key size 2048, thus, the exception is thrown. I have to download and install the Unlimited Strength Jurisdiction Policy Files from SUN. For example, I have to download jce_policy-6.zip for JDK 6 and unzip to my JAVA_HOME/jre/lib/security directory. After that, everything starts working.

jce_policy-6.zip 안에 jar파일 두개면 돼.. 끝.

2. 긁어온 소스(http://sloanseaman.com/wordpress/2011/08/11/pgp-encryptiondecryption-in-java/)로 디코딩할때

아래 에러 발생

org.bouncycastle.openpgp.PGPException: encrypted message contains a signed message – not literal data..

=> signed 된거라서 그래.(참고:http://david.tribble.com/text/pgpsign.htm)

sign하고 암호화한거야. 그리고 우리도 사인하고 암호화처리 해줘야했어.

더 긁어온 소스로 수정

http://www.docjar.org/html/api/org/bouncycastle/openpgp/examples/SignedFileProcessor.java.html

수정

긁어온거의 나중버전

http://sloanseaman.com/wordpress/2012/05/13/revisited-pgp-encryptiondecryption-in-java/

PGP