Refactor hash verification to use hmac.Equal#742
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Replace `hex.Encode` comparison with `Hashes.Equal`, benefits: 1. Constant-time comparison 2. Removes un-necessary double hex encoding Signed-off-by: udf2457 <udf2457@users.noreply.github.com>
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Pull request overview
Refactors hash verification in metadata to compare raw digest bytes using a constant-time comparison instead of comparing hex-encoded strings, reducing unnecessary allocations and improving side-channel resistance during verification.
Changes:
- Replace
hex.EncodeToString(...)-based digest comparison withhmac.Equal(...)inverifyHashes.
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| } | ||
| hasher.Write(data) | ||
| if hex.EncodeToString(v) != hex.EncodeToString(hasher.Sum(nil)) { | ||
| if !hmac.Equal(v, hasher.Sum(nil)) { |
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Replace
hex.Encodecomparison withhmac.Equal, benefits: