getPreimage method

@override Preimage? getPreimage(Proposition_Digest digestProposition)

Get the preimage secret associated to a digest proposition.

digestProposition The Digest Proposition for which to retrieve the preimage secret for Returns the preimage secret associated to the Digest Proposition if it exists. Else null

Implementation

@override
m.Preimage? getPreimage(m.Proposition_Digest digestProposition) {
  final result = digestsStore.findFirstSync(_instance,
      finder: Finder(
        filter: Filter.equals(
            "digestEvidence",
            Encoding().encodeToBase58Check(Uint8List.fromList(
                digestProposition.sizedEvidence.digest.value))),
      ));

  if (result != null) {
    return m.Preimage(
        input: Encoding()
            .decodeFromBase58Check(result["preimageInput"]! as String)
            .getOrThrow(),
        salt: Encoding()
            .decodeFromBase58Check(result["preimageSalt"]! as String)
            .getOrThrow());
  }
  return null;
}