On Thu, 21 Dec 2023 17:01:08 GMT, Weijun Wang <wei...@openjdk.org> wrote:

>> Refactored PKCS9Attribute to use a hash map instead of multiple arrays. The 
>> key for the hash map is an `ObjectIdentifier` and the values are a record 
>> `AttributeInfo` that stores the information previously contained in the 
>> arrays `PKCS9_VALUE_TAGS`, `VALUE_CLASSES`, and `SINGLE_VALUED`. 
>> 
>> It seems as though we should be able to get rid of constants such as 
>> `EMAIL_ADDRESS_OID` since they aren't heavily used with the hash map 
>> approach, but since the values are public it might cause compatibility 
>> issues.
>> 
>> Another question is how to handle `RSA DSI`, `S/MIME`, 
>> `Extended-certificate`, and `Issuer Serial Number` OIDs. The prior version 
>> threw an error but in this refactor they are treated as an "unknown OID" and 
>> only throw a debug warning. This was addressed in 
>> https://bugs.openjdk.org/browse/JDK-8011867 but prior to this refactor the 
>> aforementioned OIDs were treated differently than unknown OIDs.
>
> src/java.base/share/classes/sun/security/pkcs/PKCS9Attribute.java line 344:
> 
>> 342:         info = oidMap.get(oid);
>> 343:         Class<?> clazz = (info == null) ? BYTE_ARRAY_CLASS : 
>> info.valueClass();
>> 344:         if (clazz == null) {
> 
> If we assign a class to `SIGNING_CERTIFICATE_OID`, this will never be null.

Would `sun.security.pkcs.SigningCertificateInfo` be appropriate here?

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PR Review Comment: https://git.openjdk.org/jdk/pull/17132#discussion_r1440798699

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