Hi, Following up myself, I can see that
xmlCipherRSA.loadEncryptedKey(encryptedKeyElement); works and encryptedKey.getKeyInfo() returns null. Why is that? Thanks, Ralph On Monday 27 August 2007 17:17:00 [EMAIL PROTECTED] wrote: > Hi, > > I'm having difficulty decrypting an RSA/AES-encrypted document. I used > RSA-OAEP in wrap mode to encrypt a shared key: > > xmlCipherRSA.init(XMLCipher.WRAP_MODE, pk); > xmlCipherAES.init(XMLCipher.ENCRYPT_MODE, symKey); > encKey = xmlCipherRSA.encryptKey(document, symKey); > > and encrypted OK. > > Then I wanted to decrypt: > > xmlCipherRSA.init(XMLCipher.UNWRAP_MODE, privateKey); > > Element encryptedDataElement = (Element) document > .getElementsByTagNameNS(EncryptionConstants.EncryptionSpecNS, > EncryptionConstants._TAG_ENCRYPTEDDATA).item(0); > > Element encryptedKeyElement = (Element) encryptedDataElement > .getElementsByTagNameNS(EncryptionConstants.EncryptionSpecNS, > EncryptionConstants._TAG_ENCRYPTEDKEY).item(0); > > EncryptedKey encryptedKey = > xmlCipherRSA.loadEncryptedKey(encryptedKeyElement); > > // xmlCipherRSA.setKEK(privateKey); > Key secretKey = xmlCipherRSA.decryptKey(encryptedKey); > > At which point I get: > > Exception in thread "main" java.lang.NullPointerException > at org.apache.xml.security.encryption.XMLCipher.decryptKey(Unknown > Source) > at > tue.cryptography.messages.PDPCryptoOperator.decryptMsg(PDPCryptoOperator.ja >va:190) at > tue.cryptography.messages.FactoryTester.main(FactoryTester.java:64) > > I guess I do something in the wrong order or have omitted a step - but > which? > > Thanks, > Ralph -- For contact details, please see www.ralphholz.de.
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