TeaSpeakLibrary/src/misc/digest.h

65 lines
4.0 KiB
C++

#pragma once
#include <string>
#include <string_view>
#include <cstring>
#include <cassert>
#ifdef NO_OPEN_SSL
#define SHA_DIGEST_LENGTH (20)
#define SHA256_DIGEST_LENGTH (32)
#define SHA512_DIGEST_LENGTH (64)
#define DECLARE_DIGEST(name, _unused_, digestLength) \
namespace tomcrypt { \
extern void name(const char* input, size_t length, uint8_t* result); \
} \
inline std::string name(const std::string& input) { \
uint8_t result[digestLength]; \
tomcrypt::name(input.data(), input.length(), result); \
auto _result = std::string((const char*) result, (size_t) digestLength); \
assert(_result.length() == digestLength); \
return _result; \
} \
\
inline std::string name(const char* input, int64_t length = -1) { \
if(length == -1) length = strlen(input); \
uint8_t result[digestLength]; \
tomcrypt::name(input, length, result); \
auto _result = std::string((const char*) result, (size_t) digestLength); \
assert(_result.length() == digestLength); \
return _result; \
} \
\
\
inline void name(const char* input, size_t length, uint8_t* result) { \
tomcrypt::name(input, length, result); \
}
#else
#include <openssl/sha.h>
#define DECLARE_DIGEST(name, method, digestLength) \
inline std::string name(const std::string& input) { \
u_char buffer[digestLength]; \
method((u_char*) input.data(), input.length(), buffer); \
return std::string((const char*) buffer, (size_t) digestLength); \
} \
\
inline std::string name(const char* input, ssize_t length = -1) { \
if(length == -1) length = strlen(input); \
return name(std::string(input, (size_t) length)); \
} \
\
inline void name(const char* input, size_t length, uint8_t* result) { \
method((u_char*) input, length, result); \
}
#endif
namespace digest {
DECLARE_DIGEST(sha1, SHA1, SHA_DIGEST_LENGTH)
DECLARE_DIGEST(sha256, SHA256, SHA256_DIGEST_LENGTH)
DECLARE_DIGEST(sha512, SHA512, SHA512_DIGEST_LENGTH)
}
#undef DECLARE_DIGEST