Thanks to autocompletion, I accidently sent this mail to CORE instead of COSE. Obviously, I need to send more mails to COSE to train the algorithm…
Cheers, John From: core <[email protected]> on behalf of John Mattsson <[email protected]> Date: Tuesday, 25 May 2021 at 18:26 To: [email protected] <[email protected]>, [email protected] <[email protected]>, [email protected] <[email protected]>, [email protected] <[email protected]>, [email protected] <[email protected]> Subject: [core] Open source implementation of CBOR Encoded X.509 Certificates (C509 Certificates) Hi, There has been a lot requests from people in different working groups for souce code to try out C509 certificates. I just released my example implementation of a DER X509 to CBOR C509 encoder written in Rust. CBOR encoded X509 (RFC 5280) is one of the main future work item for the COSE WG. C509 is specified as a CBOR encoding of the DER TBSCertificate sequence, which is then combined with a signature over the DER or CBOR encoding. C509 can be used as a compression mechanism complementing RFC 8879, or as a "natively signed" CBOR certificatice encoding still following RFC 5280. The Rust implementation supports reading a certificate from file or downloading a certificate chain from a HTTPS server. The certificate chain is encoded to COSE_X509, COSE_C509, as well as TLS Certificate and CompressedCertificate messages with X509 and C509. Size comparisions can be found in the draft. The Rust implementation can be found here: https://github.com/cose-wg/CBOR-certificates/tree/master/c509<https://protect2.fireeye.com/v1/url?k=2a6ab0a6-75f18997-2a6af03d-86e2237f51fb-7667cbbe53d45aaa&q=1&e=925c08c9-de3a-40c0-aa7c-482922bdd63f&u=https%3A%2F%2Fgithub.com%2Fcose-wg%2FCBOR-certificates%2Ftree%2Fmaster%2Fc509> The latest version of the draft: https://datatracker.ietf.org/doc/draft-ietf-cose-cbor-encoded-cert/ Please send comments and suggestions to [email protected] only, which is where discussion should take place. Cheers, John
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