On Fri, 13 Aug 2021 17:11:45 GMT, Martin Balao <mba...@openjdk.org> wrote:

>> As described in JDK-8271566 [1], this patch proposal is intended to fix a 
>> problem that arises when using DSA keys that have a 256-bits (or larger) G 
>> parameter for signatures (either signing or verifying). There were some 
>> incorrect assumptions and hard-coded length values in the code before. 
>> Please note that, for example, the tuple (2048, 256) for DSA is valid 
>> according to FIPS PUB 186-4.
>> 
>> Beyond the specific issues in signatures, I decided to provide a broader 
>> solution and enable key parameter retrieval for other key types (EC, DH) 
>> when possible. This is, when the key is not sensitive. One thing that I 
>> should note here is that token keys (those that have the CKA_TOKEN attribute 
>> equal to 'true') are considered sensitive in this regard, at least by the 
>> NSS Software Token implementation. I don't have access to other vendor 
>> implementations but if there is any concern, we can adjust the constraint to 
>> NSS-only. However, I'm not sure which use-case would require to get private 
>> keys out of a real token, weakening its security. I'd be more conservative 
>> here and not query the values if not sure that it will succeed.
>> 
>> No regressions found in jdk/sun/security/pkcs11. A new test added: 
>> LargerDSAKey.
>> 
>> --
>> [1] - https://bugs.openjdk.java.net/browse/JDK-8271566
>
> Martin Balao has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   P11Key static inner classes refactorings.

Hmm, ok, I was focus on something else and missed your update to this PR. it's 
been a while, I will take another look to refresh my memory and get back to 
you... Thanks~

-------------

PR: https://git.openjdk.java.net/jdk/pull/4961

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