Incidents of key compromise where proof is supplied in the form of a private key
have historically been labor intensive for SRE. This PR seeks to automate the
process of embedded public key validation , query for issuance, revocation, and
blocking by SPKI hash.
For an example of private keys embedding a mismatched public key, see:
https://blog.hboeck.de/archives/888-How-I-tricked-Symantec-with-a-Fake-Private-Key.html.
Adds two new sub-commands (private-key-block and private-key-revoke) and one new
flag (-dry-run) to admin-revoker. Both new sub-commands validate that the
provided private key and provide the operator with an issuance count. Any
blocking and revocation actions are gated by the new '-dry-run' flag, which is
'true' by default.
private-key-block: if -dry-run=false, will immediately block issuance for the
provided key. The operator is informed that bad-key-revoker will eventually
revoke any certificates using the provided key.
private-key-revoke: if -dry-run=false, will revoke all certificates using the
provided key and then blocks future issuance. This avoids a race with the
bad-key-revoker. This command will execute successfully even if issuance for the
provided key is already blocked.
- Add support for blocking issuance by private key to admin-revoker
- Add support for revoking certificates by private key to admin-revoker
- Create new package called 'privatekey'
- Move private key loading logic from 'issuance' to 'privatekey'
- Add embedded public key verification to 'privatekey'
- Add new field `skipBlockKey` to `AdministrativelyRevokeCertificate` protobuf
- Add check in RA to ensure that only KeyCompromise revocations use
`skipBlockKey`
Fixes#5785
83a7220f4e