On Wed, 7 Aug 2024 15:06:19 GMT, Sean Mullan <mul...@openjdk.org> wrote:
>> src/java.base/share/classes/com/sun/crypto/provider/SunJCE.java line 468:
>>
>>> 466:
>>> "com.sun.crypto.provider.HkdfKeyDerivation$HkdfSHA384");
>>> 467: ps("KDF", "HKDFWithHmacSHA512",
>>> 468:
>>> "com.sun.crypto.provider.HkdfKeyDerivation$HkdfSHA512");
>>
>> Have you considered names such as HKDFWithSHA256? The "Hmac" part is sort of
>> implied by the HKDF (Hmac-based Key Derivation Function). This also better
>> matches the names used in [RFC
>> 8619](https://datatracker.ietf.org/doc/html/rfc8619 ) which defines OIDs for
>> HKDF. Now that we are adding support for HKDF, maybe add these oids to
>> KnownOIDs?
>
> +1. A similar naming convention is also used for TLS:
> https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-kdf-ids
+1. Note that `KDF.java` mentions the naming convention "ALGwithPRF". What
exactly is the PRF here? "SHA-256" or "HmacSHA256"? I had suggested to move
that naming convention to `HKDFParameterSpec`. Maybe we should not mention it
anywhere?
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PR Review Comment: https://git.openjdk.org/jdk/pull/20301#discussion_r1707384906
