Description of problem:

When I use different encryption and signing algorithm in keylime.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.

Version-Release number of selected component (if applicable):

TPM Manufacturer: swtpm
Keylime version: keylime-99-1.noarch

How reproducible:

First method:

1.Install tmt via sudo dnf install -y tmt-all
2.Clone specific branch where is test scenario for different algorithm

1. git clone --branch default_algorithm https://github.com/Koncpa/keylime-tests.git

3.Run test scenario with needed setup tasks, need to be inside cloned repo dir.

1. tmt run -vvv plan --name rust-keylime prepare discover -h fmf provision --how virtual -i Fedora-36 -c system execute --how tmt --interactive login finish

Second method:

1.Setup swtpm on machine
2.Install keylime package
3.Change in keylime.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.

Actual results:
Agent registration will fail.

Expected results:
Agent registration will be succesfull.

Additional info:

Jul 21 12:02:17 testcloud keylime_agent[3235]: WARNING:esys:src/tss2-esys/api/Esys_NV_ReadPublic.c:309:Esys_NV_ReadPublic_Finish() Received TPM Error Jul 21 12:02:17 testcloud keylime_agent[3235]: ERROR:esys:src/tss2-esys/esys_tr.c:210:Esys_TR_FromTPMPublic_Finish() Error NV_ReadPublic ErrorCode (0x0000018b) Jul 21 12:02:17 testcloud keylime_agent[3235]: ERROR:esys:src/tss2-esys/esys_tr.c:321:Esys_TR_FromTPMPublic() Error TR FromTPMPublic ErrorCode (0x0000018b) Jul 21 12:02:17 testcloud keylime_agent[3235]: WARN keylime_agent::tpm > No EK certificate found in TPM NVRAM Jul 21 12:02:17 testcloud keylime_agent[3235]: Error: Tpm

Jul 21 12:02:17 testcloud systemd[1]: keylime_agent.service: Main process exited, code=exited, status=1/FAILURE Jul 21 12:02:17 testcloud systemd[1]: keylime_agent.service: Failed with result 'exit-code'.