On Thu, 13 Mar 2025 20:04:13 GMT, Weijun Wang <wei...@openjdk.org> wrote:

>> src/java.base/share/classes/javax/crypto/spec/HPKEParameterSpec.java line 
>> 195:
>> 
>>> 193:      * <a 
>>> href="https://www.rfc-editor.org/rfc/rfc9180.html#name-key-encapsulation-mechanism";>Section
>>>  7.1 of RFC 9180</a>.
>>> 194:      */
>>> 195:     public static final int KEM_DHKEM_P_256_HKDF_SHA256 = 0x10;
>> 
>> Do we really need `KEM_` at the beginning? Seems redundant since `DHKEM` has 
>> "KEM" in it. Same comment for the KDF constants.
>
> I was hoping that IDE auto-completion would eliminate the need to type the 
> full name. Adding `KEM` at the beginning could amend the type-unsafety of 
> current algorithm identifiers -- it somehow prevents putting a KDF id as the 
> first argument of an `of` call accidentally. Maybe that is just my wishful 
> thinking?
> 
> Also, there will be KEM names like "X_WING" in the future.
> 
> I've also thought about defining `enum`s for the three types of algorithm 
> identifiers to finally solve the type-unsafety issue. However, I hesitate to 
> add them since it's such a think layer and users who need it can easily 
> create their own.

Makes sense. Copy and paste is easy enough as well.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18411#discussion_r1994242648

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