@@ -0,0 +1,254 @@
+'use strict';
+
+const common = require('../common.js');
+const { hasOpenSSL } = require('../../test/common/crypto.js');
+const assert = require('node:assert');
+const {
+  createHmac,
+  createMac,
+  getMacs,
+} = require('node:crypto');
+
+if (!hasOpenSSL(3) ||
+    process.features.openssl_is_boringssl ||
+    typeof createMac !== 'function' ||
+    typeof getMacs !== 'function') {
+  console.log('Skipping: generic MAC API requires OpenSSL >= 3');
+  process.exit(0);
+}
+
+const operations = [
+  'get-macs-cold',
+  'get-macs-warm',
+  'create-cold',
+  'create-warm',
+  'hmac-lifecycle',
+  'mac-lifecycle',
+  'mac-stream-lifecycle',
+  'update',
+  'stream',
+  'final-buffer',
+  'final-hex',
+];
+const configurations = {
+  'hmac-sha256': {
+    algorithm: 'HMAC',
+    key: Buffer.alloc(32, 0x42),
+    options: { digest: 'SHA256' },
+  },
+  'kmac-128': {
+    algorithm: 'KMAC-128',
+    key: Buffer.alloc(32, 0x42),
+    options: { outputLength: 32 },
+  },
+};
+
+const bench = common.createBenchmark(main, {
+  operation: operations,
+  algorithm: Object.keys(configurations),
+  length: [0, 64, 4096],
+  n: [1, 10_000, 20_000, 500_000],
+}, {
+  combinationFilter({ operation, algorithm, length, n }) {
+    if (operation === 'get-macs-cold') {
+      return algorithm === 'hmac-sha256' && length === 0 && n === 1;
+    }
+    if (operation === 'get-macs-warm') {
+      return algorithm === 'hmac-sha256' && length === 0 && n === 500_000;
+    }
+    if (operation === 'create-cold')
+      return length === 0 && n === 1;
+    if (operation === 'create-warm')
+      return length === 0 && n === 20_000;
+    if (operation === 'hmac-lifecycle') {
+      return algorithm === 'hmac-sha256' && n === 10_000;
+    }
+    if (operation === 'mac-lifecycle' ||
+        operation === 'mac-stream-lifecycle') {
+      return n === 10_000;
+    }
+    if (operation === 'update' || operation === 'stream') {
+      return length === 64 && n === 500_000;
+    }
+    if (operation === 'final-buffer' || operation === 'final-hex') {
+      return algorithm === 'hmac-sha256' &&
+             length === 64 &&
+             n === 20_000;
+    }
+    return false;
+  },
+  test: {
+    operation: ['create-cold'],
+    algorithm: ['hmac-sha256'],
+    length: [0],
+    n: [1],
+  },
+});
+
+function main({ operation, algorithm, length, n }) {
+  const configuration = configurations[algorithm];
+  const data = Buffer.alloc(length, 0x61);
+
+  switch (operation) {
+    case 'get-macs-cold':
+      measureGetMacs(n, false);
+      break;
+    case 'get-macs-warm':
+      measureGetMacs(n, true);
+      break;
+    case 'create-cold':
+      measureCreate(configuration, n, false);
+      break;
+    case 'create-warm':
+      measureCreate(configuration, n, true);
+      break;
+    case 'hmac-lifecycle':
+      measureHmacLifecycle(configuration, data, n);
+      break;
+    case 'mac-lifecycle':
+      measureMacLifecycle(configuration, data, n);
+      break;
+    case 'mac-stream-lifecycle':
+      measureMacStreamLifecycle(configuration, data, n);
+      break;
+    case 'update':
+      measureUpdate(configuration, data, n);
+      break;
+    case 'stream':
+      measureStream(configuration, data, n);
+      break;
+    case 'final-buffer':
+      measureFinal(configuration, data, n);
+      break;
+    case 'final-hex':
+      measureFinal(configuration, data, n, 'hex');
+      break;
+    default:
+      throw new Error(`unknown operation: ${operation}`);
+  }
+}
+
+function measureGetMacs(n, warm) {
+  if (warm)
+    getMacs();
+
+  let result;
+  bench.start();
+  for (let i = 0; i < n; ++i)
+    result = getMacs();
+  bench.end(n);
+
+  assert(Array.isArray(result));
+}
+
+function measureCreate({ algorithm, key, options }, n, warm) {
+  if (warm)
+    createMac(algorithm, key, options).final();
+
+  const contexts = new Array(n);
+  bench.start();
+  for (let i = 0; i < n; ++i)
+    contexts[i] = createMac(algorithm, key, options);
+  bench.end(n);
+
+  assert.strictEqual(typeof contexts[n - 1], 'object');
+}
+
+function measureHmacLifecycle({ key, options }, data, n) {
+  createHmac(options.digest, key).update(data).digest();
+
+  let result;
+  bench.start();
+  for (let i = 0; i < n; ++i)
+    result = createHmac(options.digest, key).update(data).digest();
+  bench.end(n);
+
+  assert(Buffer.isBuffer(result));
+}
+
+function measureMacLifecycle({ algorithm, key, options }, data, n) {
+  createMac(algorithm, key, options).update(data).final();
+
+  let result;
+  bench.start();
+  for (let i = 0; i < n; ++i)
+    result = createMac(algorithm, key, options).update(data).final();
+  bench.end(n);
+
+  assert(Buffer.isBuffer(result));
+}
+
+function measureMacStreamLifecycle({ algorithm, key, options }, data, n) {
+  const warmup = createMac(algorithm, key, options);
+  warmup.end(data);
+  warmup.read();
+
+  let result;
+  bench.start();
+  for (let i = 0; i < n; ++i) {
+    const context = createMac(algorithm, key, options);
+    context.end(data);
+    result = context.read();
+  }
+  bench.end(n);
+
+  assert(Buffer.isBuffer(result));
+}
+
+function measureUpdate({ algorithm, key, options }, data, n) {
+  const warmup = createMac(algorithm, key, options);
+  warmup.update(data).final();
+
+  const context = createMac(algorithm, key, options);
+  bench.start();
+  for (let i = 0; i < n; ++i)
+    context.update(data);
+  bench.end(n);
+
+  assert(Buffer.isBuffer(context.final()));
+}
+
+function measureStream({ algorithm, key, options }, data, n) {
+  const warmup = createMac(algorithm, key, options);
+  warmup.end(data);
+  warmup.read();
+
+  const context = createMac(algorithm, key, options);
+  bench.start();
+  for (let i = 0; i < n; ++i)
+    context.write(data);
+  bench.end(n);
+
+  context.end();
+  assert(Buffer.isBuffer(context.read()));
+}
+
+function measureFinal({ algorithm, key, options }, data, n, encoding) {
+  const warmup = createMac(algorithm, key, options).update(data);
+  if (encoding === undefined)
+    warmup.final();
+  else
+    warmup.final(encoding);
+
+  const contexts = new Array(n);
+  for (let i = 0; i < n; ++i)
+    contexts[i] = createMac(algorithm, key, options).update(data);
+
+  let result;
+  if (encoding === undefined) {
+    bench.start();
+    for (let i = 0; i < n; ++i)
+      result = contexts[i].final();
+    bench.end(n);
+  } else {
+    bench.start();
+    for (let i = 0; i < n; ++i)
+      result = contexts[i].final(encoding);
+    bench.end(n);
+  }
+
+  if (encoding === undefined)
+    assert(Buffer.isBuffer(result));
+  else
+    assert.strictEqual(typeof result, 'string');
+}
@@ -7198,6 +7198,79 @@ EVPMacPointer EVPMacPointer::Fetch(const char* algorithm) {
   return EVPMacPointer(EVP_MAC_fetch(nullptr, algorithm, nullptr));
 }
 
+MacKind MacCache::GetKind(EVP_MAC* mac) {
+  if (EVP_MAC_is_a(mac, OSSL_MAC_NAME_HMAC)) return MacKind::kHmac;
+  if (EVP_MAC_is_a(mac, OSSL_MAC_NAME_CMAC)) return MacKind::kCmac;
+  if (EVP_MAC_is_a(mac, OSSL_MAC_NAME_GMAC)) return MacKind::kGmac;
+  return MacKind::kOther;
+}
+
+MacCache::Result MacCache::lookup(const char* name, uint64_t generation) const {
+  if (generation_ != generation || name == nullptr) return {};
+  const auto it = aliases_.find(name);
+  if (it == aliases_.end()) return {};
+  return lookup(it->second, generation);
+}
+
+MacCache::Result MacCache::insert(const char* name,
+                                  EVPMacPointer&& mac,
+                                  uint64_t generation) {
+  if (generation_ != generation || generation != getFipsStateGeneration() ||
+      name == nullptr || mac == nullptr) {
+    return {};
+  }
+
+  const char* canonical_name = EVP_MAC_get0_name(mac.get());
+  const OSSL_PROVIDER* provider = EVP_MAC_get0_provider(mac.get());
+  if (canonical_name == nullptr || provider == nullptr) return {};
+
+  for (size_t index = 0; index < macs_.size(); index++) {
+    EVP_MAC* cached = macs_[index].mac.get();
+    if (cached == nullptr) continue;
+    const char* cached_name = EVP_MAC_get0_name(cached);
+    if (EVP_MAC_get0_provider(cached) == provider && cached_name != nullptr &&
+        CaseInsensitiveNameEqual()(cached_name, canonical_name)) {
+      if (generation != getFipsStateGeneration()) return {};
+      const int32_t id = static_cast<int32_t>(first_id_ + index);
+      aliases_.insert_or_assign(name, id);
+      return {cached, id, macs_[index].kind};
+    }
+  }
+
+  if (next_id_ == UINT32_MAX) return {};
+
+  std::vector<std::string> aliases;
+  {
+    MarkPopErrorOnReturn mark_pop_error_on_return;
+    if (EVP_MAC_names_do_all(mac.get(), PushAlgorithmAlias, &aliases) != 1) {
+      return {};
+    }
+  }
+  if (generation != getFipsStateGeneration()) return {};
+
+  const MacKind kind = GetKind(mac.get());
+  macs_.push_back({std::move(mac), kind});
+  const int32_t id = static_cast<int32_t>(next_id_++);
+  const size_t index = macs_.size() - 1;
+
+  for (const std::string& alias : aliases) aliases_.emplace(alias, id);
+  aliases_.insert_or_assign(name, id);
+
+  return {macs_[index].mac.get(), id, kind};
+}
+
+void MacCache::reset(uint64_t generation) {
+  if (generation_ == generation) return;
+  aliases_.clear();
+  macs_.clear();
+  first_id_ = next_id_;
+  generation_ = generation;
+}
+
+const MacCache::AliasMap& MacCache::aliases() const {
+  return aliases_;
+}
+
 EVPMacCtxPointer::EVPMacCtxPointer(EVP_MAC_CTX* ctx) : ctx_(ctx) {}
 
 EVPMacCtxPointer::EVPMacCtxPointer(EVPMacCtxPointer&& other) noexcept
@@ -7225,22 +7298,42 @@ EVP_MAC_CTX* EVPMacCtxPointer::release() {
 bool EVPMacCtxPointer::init(const Buffer<const void>& key,
                             const OSSL_PARAM* params) {
   if (!ctx_) return false;
-  return EVP_MAC_init(ctx_.get(),
-                      static_cast<const unsigned char*>(key.data),
-                      key.len,
-                      params) == 1;
+
+  static constexpr unsigned char kEmptyKey = 0;
+  const unsigned char* key_data = static_cast<const unsigned char*>(key.data);
+  if (key_data == nullptr) {
+    if (key.len != 0) return false;
+    key_data = &kEmptyKey;
+  }
+
+  return EVP_MAC_init(ctx_.get(), key_data, key.len, params) == 1;
 }
 
 bool EVPMacCtxPointer::update(const Buffer<const void>& data) {
   if (!ctx_) return false;
+  if (data.len == 0) return true;
+  if (data.data == nullptr) return false;
   return EVP_MAC_update(ctx_.get(),
                         static_cast<const unsigned char*>(data.data),
                         data.len) == 1;
 }
 
+size_t EVPMacCtxPointer::getSize() const {
+  return ctx_ ? EVP_MAC_CTX_get_mac_size(ctx_.get()) : 0;
+}
+
+const OSSL_PARAM* EVPMacCtxPointer::getSettableParams() const {
+  return ctx_ ? EVP_MAC_CTX_settable_params(ctx_.get()) : nullptr;
+}
+
 DataPointer EVPMacCtxPointer::final(size_t length) {
   if (!ctx_) return {};
-  auto buf = DataPointer::Alloc(length);
+
+  // DataPointer uses a null allocation to represent failure. Retain a
+  // one-byte allocation for a successful zero-length result while passing the
+  // requested zero capacity to OpenSSL. A non-null output pointer is required
+  // to actually finalize; nullptr only queries the output length.
+  auto buf = DataPointer::Alloc(length == 0 ? 1 : length);
   if (!buf) return {};
 
   size_t result_len = length;
@@ -7250,8 +7343,9 @@ DataPointer EVPMacCtxPointer::final(size_t length) {
                     length) != 1) {
     return {};
   }
+  if (result_len > length) return {};
 
-  return buf;
+  return buf.resize(result_len);
 }
 
 EVPMacCtxPointer EVPMacCtxPointer::New(EVP_MAC* mac) {