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Description of problem:
echo foo | clevis encrypt tpm2 '{"pcr_ids": [0,1]}' succeeds, but it uses a different policy than what was requested, due to clevis failing to parse the PCR IDs correctly.
Further inspection shows that no PCR IDs were actually used:
echo foo | clevis encrypt tpm2 '{"pcr_ids": [0,1]}' | jose jwe fmt -i- | jose fmt -j- -g protected -u- | tr -d '"' | jose b64 dec -i- | jose fmt -j- -Og clevis -Og tpm2 -Og pcr_ids -u-
<no output>
echo $?
7
If we pass a string instead of a JSON array, it works as expected:
echo foo | clevis encrypt tpm2 '{"pcr_ids": "0,1"}' | jose jwe fmt -i- | jose
fmt -j- -g protected -u- | tr -d '"' | jose b64 dec -i- | jose fmt -j- -Og clevis -Og tpm2 -Og pcr_
ids -u-
0,1
echo $?
0
Version-Release number of selected component (if applicable):
Tested with clevis-11-9.el8.x86_64
How reproducible: always
Steps to Reproduce:
1. echo foo | clevis encrypt tpm2 '{"pcr_ids": "0,1"}' | jose jwe fmt -i- | jose
fmt -j- -g protected -u- | tr -d '"' | jose b64 dec -i- | jose fmt -j- -Og clevis -Og tpm2 -Og pcr_
ids -u-
Actual results:
<no output>
echo $?
7
Expected results:
0,1
echo $?
0
Additional info:
Reported upstream at https://github.com/latchset/clevis/issues/103
Let me fix a typo in the steps to reproduce, which should use the array:
1. echo foo | clevis encrypt tpm2 '{"pcr_ids": [0,1]}' | jose jwe fmt -i- | jose fmt -j- -g protected -u- | tr -d '"' | jose b64 dec -i- | jose fmt -j- -Og clevis -Og tpm2 -Og pcr_ids -u-
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (clevis bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2020:4701
Description of problem: echo foo | clevis encrypt tpm2 '{"pcr_ids": [0,1]}' succeeds, but it uses a different policy than what was requested, due to clevis failing to parse the PCR IDs correctly. Further inspection shows that no PCR IDs were actually used: echo foo | clevis encrypt tpm2 '{"pcr_ids": [0,1]}' | jose jwe fmt -i- | jose fmt -j- -g protected -u- | tr -d '"' | jose b64 dec -i- | jose fmt -j- -Og clevis -Og tpm2 -Og pcr_ids -u- <no output> echo $? 7 If we pass a string instead of a JSON array, it works as expected: echo foo | clevis encrypt tpm2 '{"pcr_ids": "0,1"}' | jose jwe fmt -i- | jose fmt -j- -g protected -u- | tr -d '"' | jose b64 dec -i- | jose fmt -j- -Og clevis -Og tpm2 -Og pcr_ ids -u- 0,1 echo $? 0 Version-Release number of selected component (if applicable): Tested with clevis-11-9.el8.x86_64 How reproducible: always Steps to Reproduce: 1. echo foo | clevis encrypt tpm2 '{"pcr_ids": "0,1"}' | jose jwe fmt -i- | jose fmt -j- -g protected -u- | tr -d '"' | jose b64 dec -i- | jose fmt -j- -Og clevis -Og tpm2 -Og pcr_ ids -u- Actual results: <no output> echo $? 7 Expected results: 0,1 echo $? 0 Additional info: Reported upstream at https://github.com/latchset/clevis/issues/103