[Trustedjava-support] How to Encrypt by the private part of AIK

[FADY F. <fad...@ya...>]

Dear Trusted Java Team

I use the public part of AIK Key to encrypt a data and it works, I just ask how 
can I do it but by the private part of AIK.
This is my code
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        // Context Object
        context = new TcTssContextFactory().newContextObject();
        context.connect();
       
        // get SRK and Set SRK Secret
        TcIRsaKey srk = 
context.loadKeyByUuidFromSystem(TcUuidFactory.getInstance().getUuidSRK());
        TcIPolicy srkUsgPolicy = 
context.createPolicyObject(TcTssConstants.TSS_POLICY_USAGE);
        TcBlobData srkSecret = 
TcBlobData.newByteArray(TcTssConstants.TSS_WELL_KNOWN_SECRET);
        srkUsgPolicy.setSecret(TcTssConstants.TSS_SECRET_MODE_SHA1, srkSecret);
        srkUsgPolicy.assignToObject(srk);
        
        // Load AIK
        TcIRsaKey aikKey = context.loadKeyByBlob(srk, keyblob_);
        
        //Set Usage and Migration Policy
        TcIPolicy aikUsgPolicy = 
context.createPolicyObject(TcTssConstants.TSS_POLICY_USAGE);
        
aikUsgPolicy.setSecret(TcTssConstants.TSS_SECRET_MODE_PLAIN,TcBlobData.newString(keysecret));

        aikUsgPolicy.assignToObject(aikKey);
        TcIPolicy aikMigPolicy = 
context.createPolicyObject(TcTssConstants.TSS_POLICY_MIGRATION);
        
aikMigPolicy.setSecret(TcTssConstants.TSS_SECRET_MODE_PLAIN,TcBlobData.newString(keysecret));

        aikMigPolicy.assignToObject(aikKey);

         //Encrypt by the public Part of AIK
        TcTpmPubkey pubKey = new TcTpmPubkey (aikKey.getAttribData (
                                                             
TcTssConstants.TSS_TSPATTRIB_KEY_BLOB,                                

                                                             
TcTssConstants.TSS_TSPATTRIB_KEYBLOB_PUBLIC_KEY));
        String plaintext = "Daten";        
        try {
            TcBlobData data;
            data = TcBlobData.newByteArray(plaintext.getBytes("UTF_16LE"));
            System.out.println(data.toString());
            TcBlobData DataEncrypted = 
TcCrypto.pubEncryptRsaOaepSha1Mgf1(pubKey, data);
            //TcBlobData DataEncrypted= 
TcCrypto.pubEncryptRsaEcbPkcs1Padding(pubKey, Data);
            System.out.println(DataEncrypted.toString());
        } catch (UnsupportedEncodingException ex) {
            Logger.getLogger(APKIC1.class.getName()).log(Level.SEVERE, null, 
ex);
        }

***************************************************************************

Thank You Very Much
I  Really appreciate your help.

Thanks