[OATH-Toolkit-help] PSKC update

[Simon Josefsson]

Simon Josefsson <si...@josefsson.org> writes:

> I have started implementing a command line tool to interact with PSKC
> data.  It uses a new library, libpskc, to do the real work.  The
> features of the tool (and thus the library) that make sense initially
> appears to be:
>
> * Parse data and validate it against PSKC XML schema.
>
> * Create PSKC data based on input parameters.
>
> * Parse PSKC data, printing certain fields requested by user.
>
> * Convert PSKC data to some simpler format.
>
> I think the above should be implemented before thinking about next
> steps.  I have created a branch in git for this, see:
>
>   http://git.savannah.gnu.org/cgit/oath-toolkit.git/log/?h=features/pskc
>
> Expect more within the next few days...

A quick update on this.  The code on that branch is now able to do some
simple things.  I have realized some issues and will being to refactor
the code a bit, but if you want a working tool use
5fb9e4ad19d05b43bcda61b055467f05496531b6.

Validation against the XML schema:

jas@latte:~$ wget --quiet 
http://download.gooze.eu/otp/seeds/20120919-test001-4282.xml
jas@latte:~$ ~/src/oath-toolkit/pskctool/pskctool -e 20120919-test001-4282.xml
OK
jas@latte:~$

Print information about PSKC blob extracted from RFC 6030:

jas@latte:~$ cat pskc-basic.xml
<?xml version="1.0" encoding="UTF-8"?>
<KeyContainer Version="1.0"
              Id="exampleID1"
              xmlns="urn:ietf:params:xml:ns:keyprov:pskc">
  <KeyPackage>
    <Key Id="12345678"
         Algorithm="urn:ietf:params:xml:ns:keyprov:pskc:hotp">
      <Issuer>Issuer-A</Issuer>
      <Data>
        <Secret>
          <PlainValue>MTIzNA==
          </PlainValue>
        </Secret>
      </Data>
    </Key>
  </KeyPackage>
</KeyContainer>
jas@latte:~$ ~/src/oath-toolkit/pskctool/pskctool -c < pskc-basic.xml
Portable Symmetric Key Container (PSKC):
        Version: 1.0
        Id: exampleID1
        KeyPackage 1:
                Key:
                        Id: 12345678
                        Algorithm: urn:ietf:params:xml:ns:keyprov:pskc:hotp
                        Issuer: Issuer-A
                        Data:
                                Secret:
                                        PlainValue: MTIzNA==
          
jas@latte:~$ 

Another blob from RFC 6030:

jas@latte:~$ cat pskc-supp.xml
<?xml version="1.0" encoding="UTF-8"?>
<KeyContainer Version="1.0"
              Id="exampleID1"
              xmlns="urn:ietf:params:xml:ns:keyprov:pskc">
  <KeyPackage>
    <DeviceInfo>
      <Manufacturer>Manufacturer</Manufacturer>
      <SerialNo>987654321</SerialNo>
      <UserId>DC=example-bank,DC=net</UserId>
    </DeviceInfo>
    <CryptoModuleInfo>
      <Id>CM_ID_001</Id>
    </CryptoModuleInfo>
    <Key Id="12345678"
         Algorithm="urn:ietf:params:xml:ns:keyprov:pskc:hotp">
      <Issuer>Issuer</Issuer>
      <AlgorithmParameters>
        <ResponseFormat Length="8" Encoding="DECIMAL"/>
      </AlgorithmParameters>
      <Data>
        <Secret>
          <PlainValue>MTIzNDU2Nzg5MDEyMzQ1Njc4OTA=
          </PlainValue>
        </Secret>
        <Counter>
          <PlainValue>0</PlainValue>
        </Counter>
      </Data>
      <UserId>UID=jsmith,DC=example-bank,DC=net</UserId>
    </Key>
  </KeyPackage>
</KeyContainer>
jas@latte:~$ ~/src/oath-toolkit/pskctool/pskctool -c < pskc-supp.xml
Portable Symmetric Key Container (PSKC):
        Version: 1.0
        Id: exampleID1
        KeyPackage 1:
                DeviceInfo:
                        Manufacturer: Manufacturer
                        SerialNo: 987654321
                        UserId: DC=example-bank,DC=net
warning: unsupported KeyPackage member 'CryptoModuleInfo'
                Key:
                        Id: 12345678
                        Algorithm: urn:ietf:params:xml:ns:keyprov:pskc:hotp
                        Issuer: Issuer
                        AlgorithmParameters:
                                ResponseFormat:
                                        Length: 8
                                        Encoding: DECIMAL
                        Data:
                                Secret:
                                        PlainValue: MTIzNDU2Nzg5MDEyMzQ1Njc4OTA=
          
                                Counter:
                                        PlainValue: 0
                        UserId: UID=jsmith,DC=example-bank,DC=net
jas@latte:~$ 

/Simon