RFR: 8296736: Some PKCS9Attribute can be created but cannot be encoded
Xue-Lei Andrew Fan
xuelei at openjdk.org
Thu Nov 10 02:05:31 UTC 2022
On Wed, 9 Nov 2022 21:54:49 GMT, Weijun Wang <weijun at openjdk.org> wrote:
> One `PKCS9Attribute` can be created but cannot be encoded. Since the `SigningCertificateInfo::parse` method has not fully parsed the data (`PolicyInformation` is left out), this code change add the encoding itself as a field to the `SigningCertificateInfo` class so we can encode it.
>
> After this change, unsupported `PKCSAttribute` object simply cannot be created. The `new(DerValue)` constructor rejects them (type 9-13, 15) in a `switch` block, and the `new(ObjectIdentifier, Object)` constructor rejects them because `VALUE_CLASSES` for them are null.
>
> In the `encode()` method, we now throw `IllegalArgumentException` for these types and they will not happen.
Is it a real problem reported in productive environment? I was just wondering if it is a feature that nobody used it yet.
src/java.base/share/classes/sun/security/pkcs/PKCS9Attribute.java line 628:
> 626: // break unnecessary
> 627:
> 628: case 16: // SigningCertificate
I may prefer to use enum for PKCS9_OIDS so that we don't worry about if 16 is mapping to SigningCertificate while reading the code. But it is not in the scope of this PR.
src/java.base/share/classes/sun/security/pkcs/SigningCertificateInfo.java line 92:
> 90: }
> 91:
> 92: public byte[] toByteArray() {
Is it possible to have the method package private?
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Changes requested by xuelei (Reviewer).
PR: https://git.openjdk.org/jdk/pull/11070
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