[bisq-network/bisq] Sign account usage (#2768)

[Manfred Karrer]

ManfredKarrer commented on this pull request.



> +    public Set<SignedWitness> getTrustedPeerSignedWitnessSet(AccountAgeWitness accountAgeWitness) {
+        return signedWitnessMap.values().stream()
+                .filter(e -> !e.isSignedByArbitrator())
+                .filter(e -> Arrays.equals(e.getWitnessHash(), accountAgeWitness.getHash()))
+                .collect(Collectors.toSet());
+    }
+
+    // We go one level up by using the signer Key to lookup for SignedWitness objects which contain the signerKey as
+    // witnessOwnerPubKey
+    public Set<SignedWitness> getSignedWitnessSetBySignerPubKey(byte[] signerPubKey) {
+        return signedWitnessMap.values().stream()
+                .filter(e -> Arrays.equals(e.getWitnessOwnerPubKey(), signerPubKey))
+                .collect(Collectors.toSet());
+    }
+
+    public boolean isValidAccountAgeWitness(AccountAgeWitness accountAgeWitness) {

I think we need to pass through the list and remove items once processed.

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