chore: Remove inexact-weight TSS implementation

hapi/hedera-protobufs/services/basic_types.proto

@@ -1193,6 +1193,10 @@ message SignatureMap {
  * The transactions and queries supported by Hedera Hashgraph.
  */
 enum HederaFunctionality {
+    // FUTURE - Uncomment when https://github.com/hashgraph/pbj/issues/339 is fixed;
+    // currently the PBJ-generated unit tests fail when using reserved ordinals
+    // reserved 96, 97, 98, 99;
+
     /**
      * Unused - The first value is unused because this default value is
      * ambiguous with an "unset" value and therefore should not be used.
@@ -1644,26 +1648,6 @@ enum HederaFunctionality {
      */
     TokenClaimAirdrop = 95;
 
-    /**
-     * A message produced as part of Threshold Signature Scheme (TSS) processing.
-     */
-    TssMessage = 96;
-
-    /**
-     * Submit a vote as part of the Threshold Signature Scheme (TSS) processing.
-     */
-    TssVote = 97;
-
-    /**
-     * Submit a node signature as part of the Threshold Signature Scheme (TSS) processing.
-     */
-    TssShareSignature = 98;
-
-    /**
-     * Submit a node public tss encryption key as part of the Threshold Signature Scheme (TSS).
-     */
-    TssEncryptionKey = 99;
-
     /**
      * Submit a signature of a state root hash gossiped to other nodes
      */

hapi/hedera-protobufs/services/transaction_body.proto

@@ -103,11 +103,6 @@ import "node_create.proto";
 import "node_update.proto";
 import "node_delete.proto";
 
-import "auxiliary/tss/tss_message.proto";
-import "auxiliary/tss/tss_vote.proto";
-import "auxiliary/tss/tss_share_signature.proto";
-import "auxiliary/tss/tss_encryption_key.proto";
-
 import "event/state_signature_transaction.proto";
 
 /**
@@ -124,7 +119,9 @@ import "event/state_signature_transaction.proto";
  * various parameters required to process a transaction.
  */
 message TransactionBody {
-    reserved 30; // removed prior to earliest available history.
+    reserved 30, 61, 62, 63, 64;
+
+    reserved "tssMessage", "tssVote", "tssShareSignature", "tssEncryptionKey";
 
     /**
      * A transaction identifier.<br/>
@@ -559,26 +556,6 @@ message TransactionBody {
          */
         TokenClaimAirdropTransactionBody tokenClaimAirdrop = 60;
 
-        /**
-         * A transaction body for a `tssMessage` request.
-         */
-        com.hedera.hapi.services.auxiliary.tss.TssMessageTransactionBody tssMessage = 61;
-
-        /**
-         * A transaction body for a `tssVote` request.
-         */
-        com.hedera.hapi.services.auxiliary.tss.TssVoteTransactionBody tssVote = 62;
-
-        /**
-         * A transaction body for node signature as part of the Threshold Signature Scheme (TSS) processing.
-         */
-        com.hedera.hapi.services.auxiliary.tss.TssShareSignatureTransactionBody tssShareSignature = 63;
-
-        /**
-         * A transaction body for a 'tssEncryptionKey` request
-         */
-        com.hedera.hapi.services.auxiliary.tss.TssEncryptionKeyTransactionBody tssEncryptionKey = 64;
-
         /**
          * A transaction body for signature of a state root hash gossiped to other nodes
          */

hapi/internal-protobufs/network/network.proto

@@ -35,7 +35,6 @@ package com.hedera.node.internal.network;
  * limitations under the License.
  */
 
-import "auxiliary/tss/tss_message.proto";
 import "state/addressbook/node.proto";
 import "state/roster/roster.proto";
 
@@ -65,32 +64,16 @@ option java_multiple_files = true;
   * resets.
  */
 message Network {
+  reserved 2;
+
   /**
    * The metadata of the nodes in the network.
    */
   repeated NodeMetadata node_metadata = 1;
 
   /**
-   * A list of TSS messages that have been generated by the nodes in
-   * a target network that is receiving a "transplant state". <br/>
-   * This gives the capability to preserve the ledger id of the target network
-   * even if the transplant state has no keys or roster entries in common with
-   * the target.
-   * <p>
-   * This MUST be exactly the ordered list of TSS messages used to generate
-   * the target network's ledger id; and must generate the same ledger id
-   * given below.
-   */
-  repeated com.hedera.hapi.services.auxiliary.tss.TssMessageTransactionBody tss_messages = 2;
-
-  /**
-  * A public key.<br/>
-  * This key both identifies the ledger and can be used to verify ledger
-  * signatures on a block root hash.
-  * <p>
-  * This value MUST be set.<br/>
-  * This value MUST NOT be empty.<br/>
-  * This value MUST contain a valid public key.
+  * If set, the hash of the first roster that adopted TSS.<br/>
+  * A public input to every hinTS verification key proof.
   */
   bytes ledger_id = 3;
 }
@@ -99,6 +82,8 @@ message Network {
  * The full information needed for a single node in the network state.
  */
 message NodeMetadata {
+  reserved 3;
+
   /**
    * The node's entry in the current roster at the time of the network snapshot;
    * required to validate the network's ledger id if set.
@@ -114,12 +99,4 @@ message NodeMetadata {
   * in the network state.<br/>
   */
   com.hedera.hapi.node.state.addressbook.Node node = 2;
-
-  /**
-    * An elliptic curve public encryption key.<br/>
-    * If set, the public part of a prescribed TSS encryption key for the node.
-    * This is currently a BN254 elliptic curve, but this type may be subject to
-    * change in the future.
-    */
-  bytes tss_encryption_key = 3;
 }

hapi/src/main/java/com/hedera/hapi/util/HapiUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2023-2024 Hedera Hashgraph, LLC
+ * Copyright (C) 2023-2025 Hedera Hashgraph, LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -232,10 +232,6 @@ public static HederaFunctionality functionOf(final TransactionBody txn) throws U
             case TOKEN_AIRDROP -> HederaFunctionality.TOKEN_AIRDROP;
             case TOKEN_CANCEL_AIRDROP -> HederaFunctionality.TOKEN_CANCEL_AIRDROP;
             case TOKEN_CLAIM_AIRDROP -> HederaFunctionality.TOKEN_CLAIM_AIRDROP;
-            case TSS_MESSAGE -> HederaFunctionality.TSS_MESSAGE;
-            case TSS_VOTE -> HederaFunctionality.TSS_VOTE;
-            case TSS_SHARE_SIGNATURE -> HederaFunctionality.TSS_SHARE_SIGNATURE;
-            case TSS_ENCRYPTION_KEY -> HederaFunctionality.TSS_ENCRYPTION_KEY;
             case STATE_SIGNATURE_TRANSACTION -> HederaFunctionality.STATE_SIGNATURE_TRANSACTION;
             case UNSET -> throw new UnknownHederaFunctionality();
         };

hedera-node/hedera-app/src/jmh/java/com/hedera/node/app/blocks/BlockStreamManagerBenchmark.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2024 Hedera Hashgraph, LLC
+ * Copyright (C) 2024-2025 Hedera Hashgraph, LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,9 +20,8 @@
 import static com.hedera.hapi.block.stream.output.StateIdentifier.STATE_ID_BLOCK_STREAM_INFO;
 import static com.hedera.hapi.block.stream.output.StateIdentifier.STATE_ID_PLATFORM_STATE;
 import static com.hedera.node.app.blocks.BlockStreamManager.ZERO_BLOCK_HASH;
+import static com.hedera.node.app.blocks.MockBlockHashSigner.MOCK_BLOCK_HASH_SIGNER;
 import static com.hedera.node.app.blocks.schemas.V0560BlockStreamSchema.BLOCK_STREAM_INFO_KEY;
-import static com.hedera.node.app.spi.AppContext.Gossip.UNAVAILABLE_GOSSIP;
-import static com.hedera.node.app.workflows.standalone.TransactionExecutors.DEFAULT_NODE_INFO;
 import static java.util.Objects.requireNonNull;
 import static java.util.concurrent.CompletableFuture.completedFuture;
 
@@ -43,19 +42,13 @@
 import com.hedera.node.app.blocks.schemas.V0560BlockStreamSchema;
 import com.hedera.node.app.config.ConfigProviderImpl;
 import com.hedera.node.app.fixtures.state.FakeState;
-import com.hedera.node.app.services.AppContextImpl;
-import com.hedera.node.app.spi.AppContext;
 import com.hedera.node.app.spi.signatures.SignatureVerifier;
-import com.hedera.node.app.tss.TssBaseServiceImpl;
-import com.hedera.node.app.tss.TssLibraryImpl;
 import com.hedera.node.config.ConfigProvider;
 import com.hedera.pbj.runtime.OneOf;
 import com.hedera.pbj.runtime.ParseException;
 import com.hedera.pbj.runtime.io.buffer.BufferedData;
 import com.hedera.pbj.runtime.io.buffer.Bytes;
 import com.swirlds.common.crypto.Hash;
-import com.swirlds.common.metrics.noop.NoOpMetrics;
-import com.swirlds.metrics.api.Metrics;
 import com.swirlds.platform.state.service.PlatformStateService;
 import com.swirlds.platform.state.service.schemas.V0540PlatformStateSchema;
 import com.swirlds.platform.system.Round;
@@ -105,7 +98,6 @@ public class BlockStreamManagerBenchmark {
     private static final String SAMPLE_BLOCK = "sample.blk.gz";
     private static final Instant FAKE_CONSENSUS_NOW = Instant.ofEpochSecond(1_234_567L, 890);
     private static final Timestamp FAKE_CONSENSUS_TIME = new Timestamp(1_234_567L, 890);
-    private static final Metrics NO_OP_METRICS = new NoOpMetrics();
     private static final SemanticVersion VERSION = new SemanticVersion(0, 56, 0, "", "");
 
     public static void main(String... args) throws Exception {
@@ -120,29 +112,12 @@ public static void main(String... args) throws Exception {
                     "blockStream.hashCombineBatchSize", "64",
                     "blockStream.serializationBatchSize", "32"));
     private final List<BlockItem> roundItems = new ArrayList<>();
-    final AppContext appContext = new AppContextImpl(
-            Instant::now,
-            fakeSignatureVerifier(),
-            UNAVAILABLE_GOSSIP,
-            configProvider::getConfiguration,
-            () -> DEFAULT_NODE_INFO,
-            () -> NO_OP_METRICS,
-            (split, snapshots) -> {
-                throw new UnsupportedOperationException();
-            });
-    private final TssBaseServiceImpl tssBaseService = new TssBaseServiceImpl(
-            appContext,
-            ForkJoinPool.commonPool(),
-            ForkJoinPool.commonPool(),
-            new TssLibraryImpl(appContext),
-            ForkJoinPool.commonPool(),
-            new NoOpMetrics());
     private final BlockStreamManagerImpl subject = new BlockStreamManagerImpl(
+            MOCK_BLOCK_HASH_SIGNER,
             NoopBlockItemWriter::new,
             //            BaosBlockItemWriter::new,
             ForkJoinPool.commonPool(),
             configProvider,
-            tssBaseService,
             new FakeBoundaryStateChangeListener(),
             new InitialStateHash(completedFuture(FAKE_START_OF_BLOCK_STATE_HASH), FIRST_ROUND_NO - 1),
             VERSION);
@@ -165,7 +140,6 @@ public void setup() throws IOException, ParseException {
         addServiceSingleton(new V0560BlockStreamSchema(ignore -> {}), BlockStreamService.NAME, BlockStreamInfo.DEFAULT);
         addServiceSingleton(new V0540PlatformStateSchema(), PlatformStateService.NAME, platformState);
         subject.initLastBlockHash(ZERO_BLOCK_HASH);
-        tssBaseService.registerLedgerSignatureConsumer(subject);
     }
 
     @Benchmark

hedera-node/hedera-app/src/jmh/java/com/hedera/node/app/blocks/MockBlockHashSigner.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2024-2025 Hedera Hashgraph, LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hedera.node.app.blocks;
+
+import static com.hedera.node.app.hapi.utils.CommonUtils.noThrowSha384HashOf;
+import static java.util.Objects.requireNonNull;
+
+import com.hedera.pbj.runtime.io.buffer.Bytes;
+import edu.umd.cs.findbugs.annotations.NonNull;
+import java.util.concurrent.CompletableFuture;
+
+/**
+ * A mock implementation of the {@link BlockHashSigner} that "signs" block hashes by
+ * scheduling their SHA-384 hash.
+ */
+public enum MockBlockHashSigner implements BlockHashSigner {
+    MOCK_BLOCK_HASH_SIGNER;
+
+    @Override
+    public boolean isReady() {
+        return true;
+    }
+
+    @Override
+    public CompletableFuture<Bytes> signFuture(@NonNull final Bytes blockHash) {
+        requireNonNull(blockHash);
+        return CompletableFuture.supplyAsync(() -> noThrowSha384HashOf(blockHash));
+    }
+}