J2sdk 1.4.1 ...to j2sdk 1.4.2-b28 & JCE package

Question

hi,
i have pb with upgrading my compiller (in Jbuilder7) from j2sdk 1.4.1 or 1.4.0 ... (i don't remember exactly the n� of version) to j2sdk 1.4.2-b28.
well i first install the j2sdk 1.4.1 becuse it offers the JCE package(RSAwithSHA algorithme), while jdk 1.3.1 don't.
the application function very well whene i used j2sdk 1.4.1 but with j2sdk 1.4.2-b28 it compiles right (no error) but causes pbs in execution in certain fnuctions.
i got this error mesage when executiing :
java.io.InvalidClassException: com.sun.net.ssl.internal.ssl.JSA_RSAPublicKey; local class incompatible: stream classdesc serialVersionUID = -8509221176441256992, local class serialVersionUID = -4603577243802113781
thx in advance
Lam

Answer 1

i have pb with upgrading my compiller (in Jbuilder7)
from j2sdk 1.4.1 or 1.4.0 ... (i don't remember
exactly the n� of version) to j2sdk 1.4.2-b28.
well i first install the j2sdk 1.4.1 becuse it offers
the JCE package(RSAwithSHA algorithme), while jdk
1.3.1 don't.
the application function very well whene i used j2sdk
1.4.1 but with j2sdk 1.4.2-b28 it compiles right (no
error) but causes pbs in execution in certain
fnuctions.
i got this error mesage when executiing :
java.io.InvalidClassException:
com.sun.net.ssl.internal.ssl.JSA_RSAPublicKey; local
class incompatible: stream classdesc serialVersionUID
= -8509221176441256992, local class serialVersionUID =
-4603577243802113781
You have serialized a PublicKey object using 1.4.1 and try to deserialize it using
1.4.2_04. This doesn't work, I had the same problem.
You should store your key as its encoded form (an array of byte) instead of serialized form.
Using jre 1.4.1, get the encoded form using "getEncoded()" method.
Serialize the encoded form.
When you need your key, use :
KeyFactory kf = KeyFactory.getInstance("RSA");
PublicKey pk= kf.generatePublic(new java.security.spec.X509EncodedKeySpec(encodedKey) );
Matthieu