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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	crypto/crypto_hash.cc	Lines:	137	161	85.1 %
Date:	2022-06-02 04:16:03	Branches:	68	110	61.8 %


#include "crypto/crypto_hash.h"
#include "async_wrap-inl.h"
#include "base_object-inl.h"
#include "env-inl.h"
#include "memory_tracker-inl.h"
#include "string_bytes.h"
#include "threadpoolwork-inl.h"
#include "v8.h"

#include <cstdio>

namespace node {

using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::Just;
using v8::Local;
using v8::Maybe;
using v8::MaybeLocal;
using v8::Nothing;
using v8::Object;
using v8::Uint32;
using v8::Value;

namespace crypto {
Hash::Hash(Environment* env, Local<Object> wrap) : BaseObject(env, wrap) {
  MakeWeak();
}

void Hash::MemoryInfo(MemoryTracker* tracker) const {
  tracker->TrackFieldWithSize("mdctx", mdctx_ ? kSizeOf_EVP_MD_CTX : 0);
  tracker->TrackFieldWithSize("md", digest_ ? md_len_ : 0);
}

void Hash::GetHashes(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  MarkPopErrorOnReturn mark_pop_error_on_return;
  CipherPushContext ctx(env);
  EVP_MD_do_all_sorted(
#if OPENSSL_VERSION_MAJOR >= 3
    array_push_back<EVP_MD,
                    EVP_MD_fetch,
                    EVP_MD_free,
                    EVP_get_digestbyname,
                    EVP_MD_get0_name>,
#else
    array_push_back<EVP_MD>,
#endif
    &ctx);
  args.GetReturnValue().Set(ctx.ToJSArray());
}

void Hash::Initialize(Environment* env, Local<Object> target) {
  Local<FunctionTemplate> t = env->NewFunctionTemplate(New);

  t->InstanceTemplate()->SetInternalFieldCount(
      Hash::kInternalFieldCount);
  t->Inherit(BaseObject::GetConstructorTemplate(env));

  env->SetProtoMethod(t, "update", HashUpdate);
  env->SetProtoMethod(t, "digest", HashDigest);

  env->SetConstructorFunction(target, "Hash", t);

  env->SetMethodNoSideEffect(target, "getHashes", GetHashes);

  HashJob::Initialize(env, target);
}

void Hash::RegisterExternalReferences(ExternalReferenceRegistry* registry) {
  registry->Register(New);
  registry->Register(HashUpdate);
  registry->Register(HashDigest);
  registry->Register(GetHashes);

  HashJob::RegisterExternalReferences(registry);
}

void Hash::New(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);

  const Hash* orig = nullptr;
  const EVP_MD* md = nullptr;

  if (args[0]->IsObject()) {
    ASSIGN_OR_RETURN_UNWRAP(&orig, args[0].As<Object>());
    md = EVP_MD_CTX_md(orig->mdctx_.get());
  } else {
    const Utf8Value hash_type(env->isolate(), args[0]);
    md = EVP_get_digestbyname(*hash_type);
  }

  Maybe<unsigned int> xof_md_len = Nothing<unsigned int>();
  if (!args[1]->IsUndefined()) {
    CHECK(args[1]->IsUint32());
    xof_md_len = Just<unsigned int>(args[1].As<Uint32>()->Value());
  }

  Hash* hash = new Hash(env, args.This());
  if (md == nullptr || !hash->HashInit(md, xof_md_len)) {
    return ThrowCryptoError(env, ERR_get_error(),
                            "Digest method not supported");
  }

  if (orig != nullptr &&
      0 >= EVP_MD_CTX_copy(hash->mdctx_.get(), orig->mdctx_.get())) {
    return ThrowCryptoError(env, ERR_get_error(), "Digest copy error");
  }
}

bool Hash::HashInit(const EVP_MD* md, Maybe<unsigned int> xof_md_len) {
  mdctx_.reset(EVP_MD_CTX_new());
  if (!mdctx_ || EVP_DigestInit_ex(mdctx_.get(), md, nullptr) <= 0) {
    mdctx_.reset();
    return false;
  }

  md_len_ = EVP_MD_size(md);
  if (xof_md_len.IsJust() && xof_md_len.FromJust() != md_len_) {
    // This is a little hack to cause createHash to fail when an incorrect
    // hashSize option was passed for a non-XOF hash function.
    if ((EVP_MD_flags(md) & EVP_MD_FLAG_XOF) == 0) {
      EVPerr(EVP_F_EVP_DIGESTFINALXOF, EVP_R_NOT_XOF_OR_INVALID_LENGTH);
      return false;
    }
    md_len_ = xof_md_len.FromJust();
  }

  return true;
}

bool Hash::HashUpdate(const char* data, size_t len) {
  if (!mdctx_)
    return false;
  return EVP_DigestUpdate(mdctx_.get(), data, len) == 1;
}

void Hash::HashUpdate(const FunctionCallbackInfo<Value>& args) {
  Decode<Hash>(args, [](Hash* hash, const FunctionCallbackInfo<Value>& args,
                        const char* data, size_t size) {
    Environment* env = Environment::GetCurrent(args);
    if (UNLIKELY(size > INT_MAX))
      return THROW_ERR_OUT_OF_RANGE(env, "data is too long");
    bool r = hash->HashUpdate(data, size);
    args.GetReturnValue().Set(r);
  });
}

void Hash::HashDigest(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);

  Hash* hash;
  ASSIGN_OR_RETURN_UNWRAP(&hash, args.Holder());

  enum encoding encoding = BUFFER;
  if (args.Length() >= 1) {
    encoding = ParseEncoding(env->isolate(), args[0], BUFFER);
  }

  unsigned int len = hash->md_len_;

  // TODO(tniessen): SHA3_squeeze does not work for zero-length outputs on all
  // platforms and will cause a segmentation fault if called. This workaround
  // causes hash.digest() to correctly return an empty buffer / string.
  // See https://github.com/openssl/openssl/issues/9431.

  if (!hash->digest_ && len > 0) {
    // Some hash algorithms such as SHA3 do not support calling
    // EVP_DigestFinal_ex more than once, however, Hash._flush
    // and Hash.digest can both be used to retrieve the digest,
    // so we need to cache it.
    // See https://github.com/nodejs/node/issues/28245.

    char* md_value = MallocOpenSSL<char>(len);
    ByteSource digest = ByteSource::Allocated(md_value, len);

    size_t default_len = EVP_MD_CTX_size(hash->mdctx_.get());
    int ret;
    if (len == default_len) {
      ret = EVP_DigestFinal_ex(
          hash->mdctx_.get(),
          reinterpret_cast<unsigned char*>(md_value),
          &len);
      // The output length should always equal hash->md_len_
      CHECK_EQ(len, hash->md_len_);
    } else {
      ret = EVP_DigestFinalXOF(
          hash->mdctx_.get(),
          reinterpret_cast<unsigned char*>(md_value),
          len);
    }

    if (ret != 1)
      return ThrowCryptoError(env, ERR_get_error());

    hash->digest_ = std::move(digest);
  }

  Local<Value> error;
  MaybeLocal<Value> rc =
      StringBytes::Encode(env->isolate(),
                          hash->digest_.get(),
                          len,
                          encoding,
                          &error);
  if (rc.IsEmpty()) {
    CHECK(!error.IsEmpty());
    env->isolate()->ThrowException(error);
    return;
  }
  args.GetReturnValue().Set(rc.FromMaybe(Local<Value>()));
}

HashConfig::HashConfig(HashConfig&& other) noexcept
    : mode(other.mode),
      in(std::move(other.in)),
      digest(other.digest),
      length(other.length) {}

HashConfig& HashConfig::operator=(HashConfig&& other) noexcept {
  if (&other == this) return *this;
  this->~HashConfig();
  return *new (this) HashConfig(std::move(other));
}

void HashConfig::MemoryInfo(MemoryTracker* tracker) const {
  // If the Job is sync, then the HashConfig does not own the data.
  if (mode == kCryptoJobAsync)
    tracker->TrackFieldWithSize("in", in.size());
}

Maybe<bool> HashTraits::EncodeOutput(
    Environment* env,
    const HashConfig& params,
    ByteSource* out,
    v8::Local<v8::Value>* result) {
  *result = out->ToArrayBuffer(env);
  return Just(!result->IsEmpty());
}

Maybe<bool> HashTraits::AdditionalConfig(
    CryptoJobMode mode,
    const FunctionCallbackInfo<Value>& args,
    unsigned int offset,
    HashConfig* params) {
  Environment* env = Environment::GetCurrent(args);

  params->mode = mode;

  CHECK(args[offset]->IsString());  // Hash algorithm
  Utf8Value digest(env->isolate(), args[offset]);
  params->digest = EVP_get_digestbyname(*digest);
  if (UNLIKELY(params->digest == nullptr)) {
    THROW_ERR_CRYPTO_INVALID_DIGEST(env, "Invalid digest: %s", *digest);
    return Nothing<bool>();
  }

  ArrayBufferOrViewContents<char> data(args[offset + 1]);
  if (UNLIKELY(!data.CheckSizeInt32())) {
    THROW_ERR_OUT_OF_RANGE(env, "data is too big");
    return Nothing<bool>();
  }
  params->in = mode == kCryptoJobAsync
      ? data.ToCopy()
      : data.ToByteSource();

  unsigned int expected = EVP_MD_size(params->digest);
  params->length = expected;
  if (UNLIKELY(args[offset + 2]->IsUint32())) {
    // length is expressed in terms of bits
    params->length =
        static_cast<uint32_t>(args[offset + 2]
            .As<Uint32>()->Value()) / CHAR_BIT;
    if (params->length != expected) {
      if ((EVP_MD_flags(params->digest) & EVP_MD_FLAG_XOF) == 0) {
        THROW_ERR_CRYPTO_INVALID_DIGEST(env, "Digest method not supported");
        return Nothing<bool>();
      }
    }
  }

  return Just(true);
}

bool HashTraits::DeriveBits(
    Environment* env,
    const HashConfig& params,
    ByteSource* out) {
  EVPMDPointer ctx(EVP_MD_CTX_new());

  if (UNLIKELY(!ctx ||
               EVP_DigestInit_ex(ctx.get(), params.digest, nullptr) <= 0 ||
               EVP_DigestUpdate(
                   ctx.get(),
                   params.in.get(),
                   params.in.size()) <= 0)) {
    return false;
  }

  if (LIKELY(params.length > 0)) {
    unsigned int length = params.length;
    char* data = MallocOpenSSL<char>(length);
    ByteSource buf = ByteSource::Allocated(data, length);
    unsigned char* ptr = reinterpret_cast<unsigned char*>(data);

    size_t expected = EVP_MD_CTX_size(ctx.get());

    int ret = (length == expected)
        ? EVP_DigestFinal_ex(ctx.get(), ptr, &length)
        : EVP_DigestFinalXOF(ctx.get(), ptr, length);

    if (UNLIKELY(ret != 1))
      return false;

    *out = std::move(buf);
  }

  return true;
}

}  // namespace crypto
}  // namespace node


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			#include "crypto/crypto_hash.h"
2			#include "async_wrap-inl.h"
3			#include "base_object-inl.h"
4			#include "env-inl.h"
5			#include "memory_tracker-inl.h"
6			#include "string_bytes.h"
7			#include "threadpoolwork-inl.h"
8			#include "v8.h"
9
10			#include <cstdio>
11
12			namespace node {
13
14			using v8::FunctionCallbackInfo;
15			using v8::FunctionTemplate;
16			using v8::Just;
17			using v8::Local;
18			using v8::Maybe;
19			using v8::MaybeLocal;
20			using v8::Nothing;
21			using v8::Object;
22			using v8::Uint32;
23			using v8::Value;
24
25			namespace crypto {
26		1302	Hash::Hash(Environment* env, Local<Object> wrap) : BaseObject(env, wrap) {
27		1302	MakeWeak();
28		1302	}
29
30			void Hash::MemoryInfo(MemoryTracker* tracker) const {
31			tracker->TrackFieldWithSize("mdctx", mdctx_ ? kSizeOf_EVP_MD_CTX : 0);
32			tracker->TrackFieldWithSize("md", digest_ ? md_len_ : 0);
33			}
34
35		4	void Hash::GetHashes(const FunctionCallbackInfo<Value>& args) {
36		4	Environment* env = Environment::GetCurrent(args);
37		8	MarkPopErrorOnReturn mark_pop_error_on_return;
38		4	CipherPushContext ctx(env);
39		4	EVP_MD_do_all_sorted(
40			#if OPENSSL_VERSION_MAJOR >= 3
41			array_push_back<EVP_MD,
42			EVP_MD_fetch,
43			EVP_MD_free,
44			EVP_get_digestbyname,
45			EVP_MD_get0_name>,
46			#else
47			array_push_back<EVP_MD>,
48			#endif
49			&ctx);
50		8	args.GetReturnValue().Set(ctx.ToJSArray());
51		4	}
52
53		856	void Hash::Initialize(Environment* env, Local<Object> target) {
54		856	Local<FunctionTemplate> t = env->NewFunctionTemplate(New);
55
56		1712	t->InstanceTemplate()->SetInternalFieldCount(
57			Hash::kInternalFieldCount);
58		856	t->Inherit(BaseObject::GetConstructorTemplate(env));
59
60		856	env->SetProtoMethod(t, "update", HashUpdate);
61		856	env->SetProtoMethod(t, "digest", HashDigest);
62
63		856	env->SetConstructorFunction(target, "Hash", t);
64
65		856	env->SetMethodNoSideEffect(target, "getHashes", GetHashes);
66
67		856	HashJob::Initialize(env, target);
68		856	}
69
70		5201	void Hash::RegisterExternalReferences(ExternalReferenceRegistry* registry) {
71		5201	registry->Register(New);
72		5201	registry->Register(HashUpdate);
73		5201	registry->Register(HashDigest);
74		5201	registry->Register(GetHashes);
75
76		5201	HashJob::RegisterExternalReferences(registry);
77		5201	}
78
79		1302	void Hash::New(const FunctionCallbackInfo<Value>& args) {
80		1302	Environment* env = Environment::GetCurrent(args);
81
82		1302	const Hash* orig = nullptr;
83	✓✗	1302	const EVP_MD* md = nullptr;
84
85	✓✓	1302	if (args[0]->IsObject()) {
86	✗✓	13	ASSIGN_OR_RETURN_UNWRAP(&orig, args[0].As<Object>());
87		5	md = EVP_MD_CTX_md(orig->mdctx_.get());
88			} else {
89		2594	const Utf8Value hash_type(env->isolate(), args[0]);
90		1297	md = EVP_get_digestbyname(*hash_type);
91			}
92
93		1302	Maybe<unsigned int> xof_md_len = Nothing<unsigned int>();
94	✓✓	2604	if (!args[1]->IsUndefined()) {
95	✗✓	13	CHECK(args[1]->IsUint32());
96		26	xof_md_len = Just<unsigned int>(args[1].As<Uint32>()->Value());
97			}
98
99		1302	Hash* hash = new Hash(env, args.This());
100	✓✓✓✓ ✓✓	1302	if (md == nullptr \|\| !hash->HashInit(md, xof_md_len)) {
101		3	return ThrowCryptoError(env, ERR_get_error(),
102		3	"Digest method not supported");
103			}
104
105	✓✓✗✓ ✗✓	1304	if (orig != nullptr &&
106		5	0 >= EVP_MD_CTX_copy(hash->mdctx_.get(), orig->mdctx_.get())) {
107			return ThrowCryptoError(env, ERR_get_error(), "Digest copy error");
108			}
109			}
110
111		1300	bool Hash::HashInit(const EVP_MD* md, Maybe<unsigned int> xof_md_len) {
112		1300	mdctx_.reset(EVP_MD_CTX_new());
113	✓✗✗✓ ✗✓	1300	if (!mdctx_ \|\| EVP_DigestInit_ex(mdctx_.get(), md, nullptr) <= 0) {
114			mdctx_.reset();
115			return false;
116			}
117
118		1300	md_len_ = EVP_MD_size(md);
119	✓✓✓✓ ✓✓	1313	if (xof_md_len.IsJust() && xof_md_len.FromJust() != md_len_) {
120			// This is a little hack to cause createHash to fail when an incorrect
121			// hashSize option was passed for a non-XOF hash function.
122	✓✓	12	if ((EVP_MD_flags(md) & EVP_MD_FLAG_XOF) == 0) {
123		1	EVPerr(EVP_F_EVP_DIGESTFINALXOF, EVP_R_NOT_XOF_OR_INVALID_LENGTH);
124		1	return false;
125			}
126		11	md_len_ = xof_md_len.FromJust();
127			}
128
129		1299	return true;
130			}
131
132		1477	bool Hash::HashUpdate(const char* data, size_t len) {
133	✗✓	1477	if (!mdctx_)
134			return false;
135		1477	return EVP_DigestUpdate(mdctx_.get(), data, len) == 1;
136			}
137
138		1477	void Hash::HashUpdate(const FunctionCallbackInfo<Value>& args) {
139		1477	Decode<Hash>(args, [](Hash* hash, const FunctionCallbackInfo<Value>& args,
140		1477	const char* data, size_t size) {
141		1477	Environment* env = Environment::GetCurrent(args);
142	✗✓	1477	if (UNLIKELY(size > INT_MAX))
143			return THROW_ERR_OUT_OF_RANGE(env, "data is too long");
144		1477	bool r = hash->HashUpdate(data, size);
145	✓✗	2954	args.GetReturnValue().Set(r);
146			});
147		1477	}
148
149		1236	void Hash::HashDigest(const FunctionCallbackInfo<Value>& args) {
150		1236	Environment* env = Environment::GetCurrent(args);
151
152			Hash* hash;
153	✗✓	1236	ASSIGN_OR_RETURN_UNWRAP(&hash, args.Holder());
154
155		1236	enum encoding encoding = BUFFER;
156	✓✓	1236	if (args.Length() >= 1) {
157		1224	encoding = ParseEncoding(env->isolate(), args[0], BUFFER);
158			}
159
160		1236	unsigned int len = hash->md_len_;
161
162			// TODO(tniessen): SHA3_squeeze does not work for zero-length outputs on all
163			// platforms and will cause a segmentation fault if called. This workaround
164			// causes hash.digest() to correctly return an empty buffer / string.
165			// See https://github.com/openssl/openssl/issues/9431.
166
167	✓✓✓✓ ✓✓	1236	if (!hash->digest_ && len > 0) {
168			// Some hash algorithms such as SHA3 do not support calling
169			// EVP_DigestFinal_ex more than once, however, Hash._flush
170			// and Hash.digest can both be used to retrieve the digest,
171			// so we need to cache it.
172			// See https://github.com/nodejs/node/issues/28245.
173
174		1233	char* md_value = MallocOpenSSL<char>(len);
175		1233	ByteSource digest = ByteSource::Allocated(md_value, len);
176
177		1233	size_t default_len = EVP_MD_CTX_size(hash->mdctx_.get());
178			int ret;
179	✓✓	1233	if (len == default_len) {
180		1227	ret = EVP_DigestFinal_ex(
181		1227	hash->mdctx_.get(),
182			reinterpret_cast<unsigned char*>(md_value),
183			&len);
184			// The output length should always equal hash->md_len_
185	✗✓	1227	CHECK_EQ(len, hash->md_len_);
186			} else {
187		6	ret = EVP_DigestFinalXOF(
188		6	hash->mdctx_.get(),
189			reinterpret_cast<unsigned char*>(md_value),
190			len);
191			}
192
193	✗✓	1233	if (ret != 1)
194			return ThrowCryptoError(env, ERR_get_error());
195
196		1233	hash->digest_ = std::move(digest);
197			}
198
199			Local<Value> error;
200			MaybeLocal<Value> rc =
201			StringBytes::Encode(env->isolate(),
202		1236	hash->digest_.get(),
203			len,
204			encoding,
205		1236	&error);
206	✗✓	1236	if (rc.IsEmpty()) {
207			CHECK(!error.IsEmpty());
208			env->isolate()->ThrowException(error);
209			return;
210			}
211		3708	args.GetReturnValue().Set(rc.FromMaybe(Local<Value>()));
212			}
213
214		141	HashConfig::HashConfig(HashConfig&& other) noexcept
215		141	: mode(other.mode),
216		141	in(std::move(other.in)),
217		141	digest(other.digest),
218		141	length(other.length) {}
219
220			HashConfig& HashConfig::operator=(HashConfig&& other) noexcept {
221			if (&other == this) return *this;
222			this->~HashConfig();
223			return *new (this) HashConfig(std::move(other));
224			}
225
226			void HashConfig::MemoryInfo(MemoryTracker* tracker) const {
227			// If the Job is sync, then the HashConfig does not own the data.
228			if (mode == kCryptoJobAsync)
229			tracker->TrackFieldWithSize("in", in.size());
230			}
231
232		141	Maybe<bool> HashTraits::EncodeOutput(
233			Environment* env,
234			const HashConfig& params,
235			ByteSource* out,
236			v8::Local<v8::Value>* result) {
237		282	*result = out->ToArrayBuffer(env);
238		141	return Just(!result->IsEmpty());
239			}
240
241		154	Maybe<bool> HashTraits::AdditionalConfig(
242			CryptoJobMode mode,
243			const FunctionCallbackInfo<Value>& args,
244			unsigned int offset,
245			HashConfig* params) {
246		154	Environment* env = Environment::GetCurrent(args);
247
248		154	params->mode = mode;
249
250	✓✗✗✓	462	CHECK(args[offset]->IsString()); // Hash algorithm
251	✓✗	462	Utf8Value digest(env->isolate(), args[offset]);
252		154	params->digest = EVP_get_digestbyname(*digest);
253	✓✓	154	if (UNLIKELY(params->digest == nullptr)) {
254		12	THROW_ERR_CRYPTO_INVALID_DIGEST(env, "Invalid digest: %s", *digest);
255		12	return Nothing<bool>();
256			}
257
258	✓✗	426	ArrayBufferOrViewContents<char> data(args[offset + 1]);
259	✗✓	142	if (UNLIKELY(!data.CheckSizeInt32())) {
260			THROW_ERR_OUT_OF_RANGE(env, "data is too big");
261			return Nothing<bool>();
262			}
263			params->in = mode == kCryptoJobAsync
264	✓✗	284	? data.ToCopy()
265		142	: data.ToByteSource();
266
267		142	unsigned int expected = EVP_MD_size(params->digest);
268		142	params->length = expected;
269	✓✗✓✓	284	if (UNLIKELY(args[offset + 2]->IsUint32())) {
270			// length is expressed in terms of bits
271		5	params->length =
272	✓✗	10	static_cast<uint32_t>(args[offset + 2]
273		5	.As<Uint32>()->Value()) / CHAR_BIT;
274	✓✓	5	if (params->length != expected) {
275	✓✗	1	if ((EVP_MD_flags(params->digest) & EVP_MD_FLAG_XOF) == 0) {
276		1	THROW_ERR_CRYPTO_INVALID_DIGEST(env, "Digest method not supported");
277		1	return Nothing<bool>();
278			}
279			}
280			}
281
282		141	return Just(true);
283			}
284
285		141	bool HashTraits::DeriveBits(
286			Environment* env,
287			const HashConfig& params,
288			ByteSource* out) {
289		282	EVPMDPointer ctx(EVP_MD_CTX_new());
290
291		423	if (UNLIKELY(!ctx \|\|
292			EVP_DigestInit_ex(ctx.get(), params.digest, nullptr) <= 0 \|\|
293			EVP_DigestUpdate(
294			ctx.get(),
295			params.in.get(),
296	✓✗✗✓ ✓✗✗✓ ✗✓	423	params.in.size()) <= 0)) {
297			return false;
298			}
299
300	✓✗	141	if (LIKELY(params.length > 0)) {
301		141	unsigned int length = params.length;
302		141	char* data = MallocOpenSSL<char>(length);
303		141	ByteSource buf = ByteSource::Allocated(data, length);
304		141	unsigned char* ptr = reinterpret_cast<unsigned char*>(data);
305
306		141	size_t expected = EVP_MD_CTX_size(ctx.get());
307
308		141	int ret = (length == expected)
309	✓✗	141	? EVP_DigestFinal_ex(ctx.get(), ptr, &length)
310			: EVP_DigestFinalXOF(ctx.get(), ptr, length);
311
312	✗✓	141	if (UNLIKELY(ret != 1))
313			return false;
314
315		141	*out = std::move(buf);
316			}
317
318		141	return true;
319			}
320
321			} // namespace crypto
322			} // namespace node