Add backward compatibility tests for v3-encrypted data#986
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[WIP] Add test case for v3 encrypted data compatibility in v4
Add backward compatibility tests for v3-encrypted data
Mar 13, 2026
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v4.0.0 changed crypto internals — need to verify data encrypted with v3 is still decryptable.
Hard-coded test fixtures generated with
eth-crypto@3.1.0using known keys, covering:{iv, ephemPublicKey, ciphertext, mac}decrypted in v4cipher.stringify) decrypted in v4All four cases confirm v3→v4 backward compatibility holds.
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