fix: enforce strict < modulus for native byte conversions #1635
+43
−2
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Enforce documented strict inequality in BytesToNative() and () by introducing assertBytesLt and using it when WithAllowOverflow is not set.
Prevents accepting byte arrays equal to the field modulus, which previously allowed a non-unique representation of zero and could be exploited by malicious hints.Adds a negative test for the “bytes == modulus” case in BytesToNative().
Emulated conversions already enforced strictness; bringing native conversions into alignment with docs and intent.