xref: /third_party/node/src/crypto/crypto_hash.h (revision 1cb0ef41) 
1#ifndef SRC_CRYPTO_CRYPTO_HASH_H_
2#define SRC_CRYPTO_CRYPTO_HASH_H_
3
4#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
5
6#include "base_object.h"
7#include "crypto/crypto_keys.h"
8#include "crypto/crypto_util.h"
9#include "env.h"
10#include "memory_tracker.h"
11#include "v8.h"
12
13namespace node {
14namespace crypto {
15class Hash final : public BaseObject {
16 public:
17  static void Initialize(Environment* env, v8::Local<v8::Object> target);
18  static void RegisterExternalReferences(ExternalReferenceRegistry* registry);
19
20  void MemoryInfo(MemoryTracker* tracker) const override;
21  SET_MEMORY_INFO_NAME(Hash)
22  SET_SELF_SIZE(Hash)
23
24  bool HashInit(const EVP_MD* md, v8::Maybe<unsigned int> xof_md_len);
25  bool HashUpdate(const char* data, size_t len);
26
27  static void GetHashes(const v8::FunctionCallbackInfo<v8::Value>& args);
28
29 protected:
30  static void New(const v8::FunctionCallbackInfo<v8::Value>& args);
31  static void HashUpdate(const v8::FunctionCallbackInfo<v8::Value>& args);
32  static void HashDigest(const v8::FunctionCallbackInfo<v8::Value>& args);
33
34  Hash(Environment* env, v8::Local<v8::Object> wrap);
35
36 private:
37  EVPMDPointer mdctx_ {};
38  unsigned int md_len_ = 0;
39  ByteSource digest_;
40};
41
42struct HashConfig final : public MemoryRetainer {
43  CryptoJobMode mode;
44  ByteSource in;
45  const EVP_MD* digest;
46  unsigned int length;
47
48  HashConfig() = default;
49
50  explicit HashConfig(HashConfig&& other) noexcept;
51
52  HashConfig& operator=(HashConfig&& other) noexcept;
53
54  void MemoryInfo(MemoryTracker* tracker) const override;
55  SET_MEMORY_INFO_NAME(HashConfig)
56  SET_SELF_SIZE(HashConfig)
57};
58
59struct HashTraits final {
60  using AdditionalParameters = HashConfig;
61  static constexpr const char* JobName = "HashJob";
62  static constexpr AsyncWrap::ProviderType Provider =
63      AsyncWrap::PROVIDER_HASHREQUEST;
64
65  static v8::Maybe<bool> AdditionalConfig(
66      CryptoJobMode mode,
67      const v8::FunctionCallbackInfo<v8::Value>& args,
68      unsigned int offset,
69      HashConfig* params);
70
71  static bool DeriveBits(
72      Environment* env,
73      const HashConfig& params,
74      ByteSource* out);
75
76  static v8::Maybe<bool> EncodeOutput(
77      Environment* env,
78      const HashConfig& params,
79      ByteSource* out,
80      v8::Local<v8::Value>* result);
81};
82
83using HashJob = DeriveBitsJob<HashTraits>;
84
85void InternalVerifyIntegrity(const v8::FunctionCallbackInfo<v8::Value>& args);
86
87}  // namespace crypto
88}  // namespace node
89
90#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
91#endif  // SRC_CRYPTO_CRYPTO_HASH_H_
92