System.Hash.THashSHA2
Delphi
THashSHA2 = record
C++
struct DECLSPEC_DRECORD THashSHA2
{
public:
enum DECLSPEC_DENUM TSHA2Version : unsigned char { SHA224, SHA256, SHA384, SHA512, SHA512_224, SHA512_256 };
private:
static _DELPHI_CONST System::Int8 CBuffer32Length = System::Int8(0x40);
static _DELPHI_CONST System::Byte CBuffer64Length = System::Byte(0x80);
System::StaticArray<System::Byte, 128> FBuffer;
unsigned __int64 FBitLength;
unsigned FIndex;
bool FFinalized;
void __fastcall Initialize(TSHA2Version AVersion);
void __fastcall CheckFinalized();
void __fastcall Compress();
void __fastcall Compress32();
void __fastcall Compress64();
void __fastcall Finalize();
void __fastcall Finalize32();
void __fastcall Finalize64();
System::Sysutils::TBytes __fastcall GetDigest();
void __fastcall Update(const System::PByte AData, unsigned ALength)/* overload */;
public:
static THashSHA2 __fastcall Create(TSHA2Version AHashVersion = (TSHA2Version)(0x1));
void __fastcall Reset();
void __fastcall Update(const void *AData, unsigned ALength)/* overload */;
void __fastcall Update(const System::Sysutils::TBytes AData, unsigned ALength = (unsigned)(0x0))/* overload */;
void __fastcall Update(const System::UnicodeString Input)/* overload */;
int __fastcall GetBlockSize();
int __fastcall GetHashSize();
System::Sysutils::TBytes __fastcall HashAsBytes();
System::UnicodeString __fastcall HashAsString();
static System::Sysutils::TBytes __fastcall GetHashBytes(const System::UnicodeString AData, TSHA2Version AHashVersion = (TSHA2Version)(0x1))/* overload */;
static System::UnicodeString __fastcall GetHashString(const System::UnicodeString AString, TSHA2Version AHashVersion = (TSHA2Version)(0x1))/* overload */;
static System::Sysutils::TBytes __fastcall GetHashBytes(System::Classes::TStream* const AStream, TSHA2Version AHashVersion = (TSHA2Version)(0x1))/* overload */;
static System::UnicodeString __fastcall GetHashString(System::Classes::TStream* const AStream, TSHA2Version AHashVersion = (TSHA2Version)(0x1))/* overload */;
static System::Sysutils::TBytes __fastcall GetHashBytesFromFile(const System::Sysutils::TFileName AFileName, TSHA2Version AHashVersion = (TSHA2Version)(0x1));
static System::UnicodeString __fastcall GetHashStringFromFile(const System::Sysutils::TFileName AFileName, TSHA2Version AHashVersion = (TSHA2Version)(0x1));
static System::UnicodeString __fastcall GetHMAC(const System::UnicodeString AData, const System::UnicodeString AKey, TSHA2Version AHashVersion = (TSHA2Version)(0x1));
static System::Sysutils::TBytes __fastcall GetHMACAsBytes(const System::UnicodeString AData, const System::UnicodeString AKey, TSHA2Version AHashVersion = (TSHA2Version)(0x1))/* overload */;
static System::Sysutils::TBytes __fastcall GetHMACAsBytes(const System::UnicodeString AData, const System::Sysutils::TBytes AKey, TSHA2Version AHashVersion = (TSHA2Version)(0x1))/* overload */;
static System::Sysutils::TBytes __fastcall GetHMACAsBytes(const System::Sysutils::TBytes AData, const System::UnicodeString AKey, TSHA2Version AHashVersion = (TSHA2Version)(0x1))/* overload */;
static System::Sysutils::TBytes __fastcall GetHMACAsBytes(const System::Sysutils::TBytes AData, const System::Sysutils::TBytes AKey, TSHA2Version AHashVersion = (TSHA2Version)(0x1))/* overload */;
private:
TSHA2Version FVersion;
union
{
struct
{
System::StaticArray<unsigned __int64, 8> FHash64;
};
struct
{
System::StaticArray<unsigned, 8> FHash;
};
};
};
Propriétés
| Type | Visibilité | Source | Unité | Parent |
|---|---|---|---|---|
record struct |
public | System.Hash.pas System.Hash.hpp |
System.Hash | System.Hash |
Description
Un enregistrement qui implémente le type de hachage SHA-2.
THashSHA2 fournit des méthodes comme :
- Update : met à jour la valeur de hachage avec les données fournies.
- GetHashString : renvoie la valeur de hachage de la chaîne fournie.
- GetHashStringFromFile : renvoie la valeur hash du fichier fourni.
- GetHMAC : renvoie une représentation chaîne associée avec l'authentification HMAC (code d'authentification de message basé sur le hachage).
Voir aussi
- SHA-2
- Hash-based message authentication code (EN)
- Cryptographic hash function (EN)
- Hash function (EN)