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CBMC: Add the spec and proof for crypto_sign_verify_internal #288

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@willieyz willieyz commented May 26, 2025

Draft PR created.
Still working on the crypto_sign_verify_internal CBMC contract and loop invariants.
Update polyvec_use_hint with introduce new polyveck w2 object in the calling function sign.c
Related to PR #287
Resolve issue #276

- Change the signature of poly_sub to take only 2 arguments.
- Adjust polyveck_sub and all call sites accordingly.
- Update CBMC proofs to reflect these changes.

Signed-off-by: willieyz <[email protected]>
@willieyz willieyz force-pushed the cbmc-crypto_sign_verify_internal branch from 31282cd to 2006d6c Compare May 27, 2025 07:46
- For polyveck_use_hint, introduce new polyveck w2 and use that as the first parameter in the calling function sign.c

Signed-off-by: willieyz <[email protected]>
@willieyz willieyz force-pushed the cbmc-crypto_sign_verify_internal branch from d353e15 to 62381eb Compare May 27, 2025 08:19
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