This is Jim's reference code: https://github.com/cose-wg/COSE-JAVA/blob/master/src/main/java/COSE/AlgorithmID.java#L54 https://github.com/cose-wg/COSE-JAVA/blob/master/src/main/java/COSE/Recipient.java#L258
This is the IANA registry line for the same algorithm (ECDH-ES+A256KW): CDH-ES + A256KW -31 ECDH ES w/ Concat KDF and AES Key Wrap w/ 256-bit key And this is the RFC: | ECDH-ES + | -31 | HKDF - | yes | A256KW | ECDH ES w/ | | A256KW | | SHA-256 | | | Concat KDF | | | | | | | and AES Key | | | | | | | Wrap w/ | | | | | | | 256-bit key | ? Being a developer, I tend to stick to code so I vote for HKDF as the "truth" :) Thanx, Anders _______________________________________________ COSE mailing list [email protected] https://www.ietf.org/mailman/listinfo/cose
