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#ifndef SRC_CRYPTO_CRYPTO_SCRYPT_H_
#define SRC_CRYPTO_CRYPTO_SCRYPT_H_
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#include "crypto/crypto_util.h"
#include "env.h"
#include "memory_tracker.h"
#include "v8.h"
namespace node {
namespace crypto {
#ifndef OPENSSL_NO_SCRYPT
// Scrypt is a password-based key derivation algorithm
// defined in https://tools.ietf.org/html/rfc7914
// It takes as input a password, a salt value, and a
// handful of additional parameters that control the
// cost of the operation. In this case, the higher
// the cost, the better the result. The length parameter
// defines the number of bytes that are generated.
// The salt must be as random as possible and should be
// at least 16 bytes in length.
struct ScryptConfig final : public MemoryRetainer {
CryptoJobMode mode;
ByteSource pass;
ByteSource salt;
uint32_t N;
uint32_t r;
uint32_t p;
uint64_t maxmem;
int32_t length;
ScryptConfig() = default;
explicit ScryptConfig(ScryptConfig&& other) noexcept;
ScryptConfig& operator=(ScryptConfig&& other) noexcept;
void MemoryInfo(MemoryTracker* tracker) const override;
SET_MEMORY_INFO_NAME(ScryptConfig)
SET_SELF_SIZE(ScryptConfig)
};
struct ScryptTraits final {
using AdditionalParameters = ScryptConfig;
static constexpr const char* JobName = "ScryptJob";
static constexpr AsyncWrap::ProviderType Provider =
AsyncWrap::PROVIDER_SCRYPTREQUEST;
static v8::Maybe<bool> AdditionalConfig(
CryptoJobMode mode,
const v8::FunctionCallbackInfo<v8::Value>& args,
unsigned int offset,
ScryptConfig* params);
static bool DeriveBits(
Environment* env,
const ScryptConfig& params,
ByteSource* out);
static v8::Maybe<bool> EncodeOutput(
Environment* env,
const ScryptConfig& params,
ByteSource* out,
v8::Local<v8::Value>* result);
};
using ScryptJob = DeriveBitsJob<ScryptTraits>;
#else
// If there is no Scrypt support, ScryptJob becomes a non-op
struct ScryptJob {
static void Initialize(
Environment* env,
v8::Local<v8::Object> target) {}
};
#endif // !OPENSSL_NO_SCRYPT
} // namespace crypto
} // namespace node
#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#endif // SRC_CRYPTO_CRYPTO_SCRYPT_H_
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