Registration of agent fail, when keylime use non-default algorithm

Environment

• OS / version: fedora35
• Processor architecture: x86_64
• TPM Manufacturer: swtpm
• Keylime version: keylime-upstream-version

Description

When I use different encryption and signing algorithm in agent.conf, than default RSA the agent cannot be registered and registration fail. I used ECC instead of RSA for encryption and ECSCHNORR instead of RSASSA for signing.

RFE-Keylime tests

Expected behavior vs. actual behavior

Agent will succesfully register vs. registration of agent fail.

Steps to reproduce problem:

1. Setup swtpm on machine
2. Install keylime package
3. Change in agent.conf encryption algorithm to tpm_encryption_alg = ecc and signing algorithm to tpm_signing_alg = ecschnorr
4. Run keylime verifier,registrar,agent and wait for registration of agent.

Relevant logs

Feb 03 10:22:58 ci-vm-10-0-136-178.hosted.upshift.rdu2.redhat.com keylime_agent[6013]: WARNING:esys:src/tss2-esys/api/Esys_NV_ReadPublic.c:309:Esys_NV_ReadPublic_Finish() Received TPM Error
Feb 03 10:22:58 ci-vm-10-0-136-178.hosted.upshift.rdu2.redhat.com keylime_agent[6013]: ERROR:esys:src/tss2-esys/esys_tr.c:209:Esys_TR_FromTPMPublic_Finish() Error NV_ReadPublic ErrorCode (0x0000018b)
Feb 03 10:22:58 ci-vm-10-0-136-178.hosted.upshift.rdu2.redhat.com keylime_agent[6013]: ERROR:esys:src/tss2-esys/esys_tr.c:320:Esys_TR_FromTPMPublic() Error TR FromTPMPublic ErrorCode (0x0000018b)

Output of logs can be found in /var/tmp/limeLib after run, when you reproduce by first approach. Should be here agent.log and also registrar.log.