[Trustedjava-support] Error in perfoming "Seal" command [Error code: 0x24 - Invalid Key Usage]

[Nektarios I. <ine...@gm...>]

Hello everyone,

I am trying to create a "sealed" package using the "seal" subcommand of
jTPMTools. I couldn't find anyone having a similar problem on the mailing
list so I am posting my case here.

"somefile.txt" is a plaintext file I created with a few words in it.
"newpass" is the sealing key's password. The key has been created using the
"create_key" subcommand as follows:

create_key -k newpass    [SUCCESSFULL]

---> This gave key: 1.2.3.4.5.3589e17f4313

"somefile_sealed.txt" is the file to be created by the (successful)

[root@localhost jTpmTools_0.2]# sh jtt.sh seal -i somefile.txt -k newpass -o
somefile_sealed.txt -p 0 -u 1.2.3.4.5.3589e17f4313





Here is the output,

  -----------------------------------
   IAIK/OpenTC        Java TPM Tools
  - - - - -                 - - - - -
   based on IAIK/OpenTC jTSS Wrapper
  -----------------------------------


/home/inectarios/Trusted_Computing/jTpmTools_0.2/ext_libs
16:13:31:967 [INFO] Seal::execute (205):        sealing to pcr: 0
TSPI call error:
  error code:    0x24
  error message: TPM layer: Invalid key usage
        at iaik.tss.impl.jni.TcBaseObject.handleRetCode(TcBaseObject.java
:102)
        at iaik.tss.impl.jni.TcEncData.seal(TcEncData.java:129)
        at iaik.tc.apps.jtt.data.Seal.execute(Seal.java:271)
        at iaik.tc.utils.cmdline.SubCommand.run(SubCommand.java:80)
        at iaik.tc.utils.cmdline.SubCommandParser.parse(
SubCommandParser.java:52)
        at iaik.tc.apps.jtt.common.JTpmTools.main(JTpmTools.java:67)