RFR: 8297065: DerOutputStream operations should not throw IOExceptions

[Weijun Wang]

On Wed, 23 Nov 2022 02:28:44 GMT, Mark Powers <mpowers at openjdk.org> wrote:

>> This is mostly cleanup. Everything around `DerOutputStream` no longer throws an `IOException`. This includes:
>> 
>> - Remove unnecessary `throws IOException` in code and spec
>> - Remove `catch (IOException ioe)` blocks. If new exception is thrown, remove further `throws` in code and spec
>> - More classes implementing `DerEncoder` if they have a `encode(DerOutputStream)` method
>> - Modify `write(bytes)` to `writeBytes(bytes)` to avoid IOE
>> - Some unused methods removed
>> - `DerOutputStream` is final
>> 
>> The only actual changes (still trivial) are:
>> - Since `PKCS7::encodeSignedData(OutputStream out)` is removed, its usages in `PKCS7::constructToken` and `TsaSigner::createResponse` (in test) are modified to use another method with a `DerOutputStream` argument.
>> - In PKCS8Key, since `getEncodedInternal` never returns non-null, remove null check on result
>> - Since `DerOutputStream` is final, no need to clone bytes in `encode` of `X509CertImpl` and `X509CRLImpl`.
>
> src/java.base/share/classes/sun/security/x509/CRLExtensions.java line 151:
> 
>> 149: 
>> 150:         DerOutputStream tmp = new DerOutputStream();
>> 151:         if (isExplicit)
> 
> Use curley braces.

I'll do. This is new code.

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PR: https://git.openjdk.org/jdk/pull/11302