AES-XTS Ciphertext_stealing safety proofs#367
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…der. "Remove `.size` as not passing on MacOS with this build.
It's from AWS-LC's generated-src/linux-aarch64/crypto/fipsmodule/aesv8-armx.S It was previously taken from win-aarch64.
In some places, only comments are different after the decoder was updated.
…ndian representation.
…l, with explanation." This reverts commit d3035e8.
Add ASCII drawing to explain the cipher-stealing loop invariant. Address comments on decrypt proof.
Special thanks to Opus. Also, add abbrevs_unfold_before_f_events_tac to DISCHARGE_SAFETY_PROPERTY_TAC
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Note: To be rebased on #331 after it's merged. This PR adds only 2 commits.
Description of changes:
Constant-time and Memory Safety properties for AES-XTS Ciphertext-stealing in both decrypt (by @aqjune-aws) and encrypt. The encrypt proof follows the same structure as the decrypt proof with some changes to adapt to the difference in implementation.
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