feat: verify contract signatures #2435
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Summary
We assume that all incoming signatures-to-be-refined are 65 bytes in length. However, this is not the case for contract signatures.
Currently, the interface does not support proposal/confirmation with confirmations but it is planned.
This adds a new
parseSignaturesByTypehelper function that verifies/splits a (concatenated) signature into signatures by type, e.g. contract signatures with their dynamic parts.Changes
parseSignaturesByTypehelperSignatureSchemato prevent refinement of knowingly incorrect signatures