% tss2_verifyquote(1) tpm2-tools | General Commands Manual % % APRIL 2019

NAME

tss2_verifyquote(1) -

SYNOPSIS

tss2_verifyquote [OPTIONS]

common fapi references

DESCRIPTION

tss2_verifyquote(1) - This command verifies that the data returned by a quote is valid. This includes

• Reconstructing the quoteInfo's PCR values from the eventLog (if an eventLog was provided)
• Verifying the quoteInfo using the signature and the publicKeyPath

The used signature verification scheme is specified in the cryptographic profile (cf., fapi-profile(5)).

An application using tss2_verifyquote() will further have to

• Assess the publicKey's trustworthiness
• Assess the eventLog entries' trustworthiness

OPTIONS

These are the available options:

• -Q, --qualifyingData=FILENAME or - (for stdin):

  A nonce provided by the caller to ensure freshness of the signature. Optional parameter.

• -l, --pcrLog=FILENAME or - (for stdin):

  Returns the PCR event log for the chosen PCR. Optional parameter.

  PCR event logs are a list (arbitrary length JSON array) of log entries with the following content.

  - recnum: Unique record number
  - pcr: PCR index
  - digest: The digests
  - type: The type of event. At the moment the only possible value is: "LINUX_IMA" (legacy IMA)
  - eventDigest: Digest of the event; e.g. the digest of the measured file
  - eventName: Name of the event; e.g. the name of the measured file.
  

• -q, --quoteInfo=FILENAME or - (for stdin):

  The JSON-encoded structure holding the inputs to the quote operation. This includes the digest value and PCR values.

• -k, --publicKeyPath=STRING:

  Identifies the signing key. MAY be a path to the public key hierarchy /ext.

• -i, --signature=FILENAME or - (for stdin):

  The signature over the quoted material.

common tss2 options

EXAMPLE

    tss2_verifyquote --publicKeyPath="ext/myNewParent" --qualifyingData=qualifyingData.file --quoteInfo=quoteInfo.file --signature=signature.file --pcrLog=pcrLog.file

RETURNS

0 on success or 1 on failure.

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