RFR: 8302233: HSS/LMS: keytool and jarsigner changes [v6]

[Ferenc Rakoczi]

On Mon, 27 Nov 2023 20:21:33 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> Code changes for HSS/LMS that's related to keytool and jarsigner:
>> 
>> 1. No need to add `-sigalg` for both tools when HSS/LMS key is involved, it can only be `HSS/LMS`.
>> 2. The `digestAlgorithm` field in a PKCS7 `SignerInfo`. It must be the same as the hash algorithm used by the HSS/LMS key. This needs to be enforced both at signing and verification.
>> 3. HSS/LMS reuses `.DSA` as the signature block file extension inside a signed JAR file
>
> Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   reword comment

src/java.base/share/classes/sun/security/pkcs/SignerInfo.java line 526:

> 524:                 break;
> 525:             case "HSS/LMS":
> 526:                 // RFC 8708 requires the same hash algorithm used as in the HSS/LMS algorithm

Actually it is RFC 8554 that requires it, RFC 8708 just references RFC 8554

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PR Review Comment: https://git.openjdk.org/jdk/pull/14254#discussion_r1410904786