RFR JDK-8000415: Add support for SHA-3

[Valerie Peng]

Yes, I think it's better to deal with this before you call the methods 
in ByteArrayAccess class.
Your code snippet looks good.
Valerie

On 5/5/2016 1:16 AM, Wang Weijun wrote:
>> On May 5, 2016, at 11:06 AM, Wang Weijun<weijun.wang at oracle.com>  wrote:
>>
>> So this assumes len % 4 == 0.
>>
>> If you follow this, you might need to add Unsafe.putInt for the last 4 bytes.
>>
>> On the other hand, if you think len % 8 == 0 should always be true, I can do some expand-and-shrink inside SHA5.java. My DRBG chanegset is not pushed yet.
> I decided not to touch ByteArrayAccess.java. Instead, for SHA-512/224, I will use
>
> int len = engineGetDigestLength();
> if (len == 28) {
>     // Special case for SHA-512/224
>     l2bBig(state, 0, out, ofs, 24);
>     i2bBig4((int)(state[3]>>  32), out, ofs + 24);
> } else {
>     l2bBig(state, 0, out, ofs, len);
> }
>
> Maybe we should add a check in l2bBig etc.
>
> Thanks
> Max
>