RFR: 8281628: KeyAgreement : generateSecret intermittently not resetting [v3]

[Valerie Peng]

On Wed, 2 Mar 2022 23:00:02 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> After `n = generateSecret(secret, offset)` is called, only `n` bytes from `offset` should be touched, and in this case `n` is 64. Even if you allocate 80 bytes of data, we should not compare those after the 64th byte.
>
> But you remind me I should take it for granted that the return value is always 64 and it should be checked as well. A new commit pushed.

Hmm, I see, I confused the actual length with the buffer length. In the case where the generated bytes are shorter, the difference is only one byte, so setting other bytes do not matter.

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PR: https://git.openjdk.java.net/jdk/pull/7665