fix: use Algorithm method if keySet has one#82
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What
When verifying a signature, if the provided
keySetis acrypto.Signerthat satisfiesKey, then call theAlgorithmmethod to determine the alg parameter.Why
The key might use an algorithm that isn't ES256. If the signature is made with a different algorithm than ES256, then verifying with the same key later on will fail.
https://slopcannon.tail952194.ts.net/lachlan/deepsec-buildkite-agent/HIGH_BUG/agent-other-algorithm-mismatch-bf08a85508.md
Disclosures
Found by deepsec, but fixed by me.