Paul Elliott a3daff47d8 Add early exit if zero length AEAD AD passed in. ...

With multipart AEAD, if we attempt to add zero length additional data,
then with the buffer sharing fixes this can now lead to undefined
behaviour when using gcm. Fix this by returning early, as there is
nothing to do if the input length is zero.

Signed-off-by: Paul Elliott <paul.elliott@arm.com>

2024-04-26 18:47:40 +01:00

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