🧪 [testing improvement] Add test for zero private key in ECDSA#34
🧪 [testing improvement] Add test for zero private key in ECDSA#34tanm-sys wants to merge 1 commit into
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| #[test] | ||
| fn test_zero_private_key() { | ||
| let secret_key_bytes = [0u8; 32]; |
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SUGGESTION: Variable name is misleading — secret_key_bytes suggests raw untrusted input bytes, but [0u8; 32] here is encoding a concrete scalar value (zero), not a generic byte slice read from an external source. Consider renaming to zero_scalar_bytes or zero_key_bytes to disambiguate intent from the from_bytes(...).unwrap() call on the next line.
| #[test] | ||
| fn test_zero_private_key() { | ||
| let secret_key_bytes = [0u8; 32]; | ||
| let secret_key = <Secp256k1 as forge_ec_core::Curve>::Scalar::from_bytes(&secret_key_bytes).unwrap(); |
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WARNING: from_bytes(...).unwrap() relies on the downstream sign_internal guard at ecdsa.rs:103 (which checks sk.is_zero() || !sk.ct_lt(&order)) to catch the zero-key case. If the validation in sign_internal were ever refactored or replaced, this unwrap() would silently panic rather than return the expected Error::InvalidPrivateKey. For defensive robustness against future refactors of private-key validation in sign_internal, consider replacing unwrap() with an explicit .map_err(|_| Error::InvalidPrivateKey)?. This also makes the intent that the input must represent a valid non-zero scalar clear at every layer.
Code Review SummaryStatus: 1 Issue Found | Recommendation: Address before merge Overview
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🎯 What: The testing gap addressed is the lack of test for catching a zeroed private key byte array passed during the construction of an ECDSA signing request.
📊 Coverage: A new test
test_zero_private_keywas added to verify the zero private key scenario, ensuring it correctly returnsError::InvalidPrivateKey.✨ Result: Test coverage is improved, adding a safety net to ensure that improper inputs like a zeroed private key are appropriately handled when generating a signing request in ECDSA.
PR created automatically by Jules for task 10862263643748643601 started by @tanm-sys