Support more key types for CT `Keyring`

sigstore / sigstore-rs

An experimental Rust crate for sigstore

https://sigstore.github.io/sigstore-rs/sigstore/

Apache License 2.0

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Support more key types for CT `Keyring` #373

Open tnytown opened 3 months ago

tnytown commented 3 months ago

Follow-on for #326.

We should determine if we need to support CT/AT signing key types besides secp256r1. I haven't observed any other key types in PGI TUF materials, but support may be useful for custom trust root scenarios.