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{**********************************************************************}
{ }
{ "The contents of this file are subject to the Mozilla Public }
{ License Version 1.1 (the "License"); you may not use this }
{ file except in compliance with the License. You may obtain }
{ a copy of the License at http://www.mozilla.org/MPL/ }
{ }
{ Software distributed under the License is distributed on an }
{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express }
{ or implied. See the License for the specific language }
{ governing rights and limitations under the License. }
{ }
{ Copyright Creative IT. }
{ Current maintainer: Eric Grange }
{ }
{**********************************************************************}
unit dwsCryptoLibModule;
interface
uses
Windows, SysUtils, Classes, Types,
dwsComp, dwsExprs, dwsUtils, dwsXPlatform, dwsTokenStore, dwsCryptoXPlatform,
dwsXXHash;
type
TdwsCryptoLib = class(TDataModule)
dwsCrypto: TdwsUnit;
procedure dwsCryptoClassesSHA256MethodsHashDataEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesSHA1MethodsHashDataEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesMD5MethodsHashDataEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesEncryptionAESSHA256FullMethodsEncryptDataEval(
Info: TProgramInfo; ExtObject: TObject);
procedure dwsCryptoClassesEncryptionAESSHA256FullMethodsDecryptDataEval(
Info: TProgramInfo; ExtObject: TObject);
procedure dwsCryptoClassesHashRIPEMD160MethodsHashDataEval(
Info: TProgramInfo; ExtObject: TObject);
procedure dwsCryptoClassesHashCRC32MethodsHashDataEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesEncryptionCryptProtectMethodsEncryptDataEval(
Info: TProgramInfo; ExtObject: TObject);
procedure dwsCryptoClassesEncryptionCryptProtectMethodsDecryptDataEval(
Info: TProgramInfo; ExtObject: TObject);
procedure dwsCryptoClassesHashSHA3_256MethodsHashDataEval(
Info: TProgramInfo; ExtObject: TObject);
procedure dwsCryptoClassesHashSHA256MethodsHMACEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesHashMD5MethodsHMACEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesHashSHA1MethodsHMACEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesHashRIPEMD160MethodsHMACEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesHashSHA3_256MethodsHMACEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesHashCRC32MethodsHMACEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoFunctionsCryptographicRandomEval(info: TProgramInfo);
procedure dwsCryptoFunctionsProcessUniqueRandomEval(info: TProgramInfo);
procedure dwsCryptoFunctionsCryptographicTokenEval(info: TProgramInfo);
procedure DataModuleCreate(Sender: TObject);
procedure DataModuleDestroy(Sender: TObject);
procedure dwsCryptoClassesNoncesMethodsGenerateEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesNoncesMethodsClearEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesNoncesMethodsGetDataEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesNoncesMethodsRemoveEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesNoncesMethodsRemoveByDataEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesNoncesMethodsCheckAndKeepEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesNoncesMethodsCheckAndRemoveEval(
Info: TProgramInfo; ExtObject: TObject);
procedure dwsCryptoClassesNoncesMethodsRegisterEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesNoncesMethodsCollectEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesEncryptionAESSHA3CTRMethodsEncryptDataEval(
Info: TProgramInfo; ExtObject: TObject);
procedure dwsCryptoClassesEncryptionAESSHA3CTRMethodsDecryptDataEval(
Info: TProgramInfo; ExtObject: TObject);
procedure dwsCryptoClassesECCsecp256r1MethodsMakeKeyEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesECCsecp256r1MethodsECDHSharedSecretEval(
Info: TProgramInfo; ExtObject: TObject);
procedure dwsCryptoClassesECCsecp256r1MethodsECDSASignEval(
Info: TProgramInfo; ExtObject: TObject);
procedure dwsCryptoClassesECCsecp256r1MethodsECDSAVerifyEval(
Info: TProgramInfo; ExtObject: TObject);
procedure dwsCryptoClassesHashSHA512MethodsHashDataEval(Info: TProgramInfo;
ExtObject: TObject);
procedure dwsCryptoClassesHashSHA512MethodsHMACEval(Info: TProgramInfo;
ExtObject: TObject);
private
{ Private declarations }
FNonces : TdwsTokenStore;
FNonceFilename : String;
procedure SetNonceFilename(const name : String);
public
{ Public declaration }
property NonceFilename : String read FNonceFilename write SetNonceFilename;
property Nonces : TdwsTokenStore read FNonces;
procedure UseTemporaryStorageForNonces;
end;
implementation
{$R *.dfm}
uses dwsCryptoUtils, SynCrypto, dwsCryptProtect, SynZip, SynEcc;
procedure PerformHashData(Info: TProgramInfo; h : THashFunction);
var
b : RawByteString;
begin
b := h(Info.ParamAsDataString[0]);
Info.ResultAsString := BinToHex(b[1], Length(b));
end;
procedure PerformHMAC(Info: TProgramInfo; h : THashFunction; blockSize : Integer);
begin
Info.ResultAsString := HMAC(Info.ParamAsDataString[0], Info.ParamAsDataString[1], h, blockSize);
end;
function DoAESFull(const data, key : RawByteString; encrypt : Boolean) : RawByteString;
var
outbuf : TWriteOnlyBlockStream;
begin
if data = '' then Exit('');
outbuf := TWriteOnlyBlockStream.AllocFromPool;
try
AESSHA256Full(Pointer(data), Length(data), outbuf, key, encrypt);
Result := outbuf.ToRawBytes;
finally
outbuf.ReturnToPool;
end;
end;
procedure TdwsCryptoLib.DataModuleCreate(Sender: TObject);
begin
FNonces:=TdwsTokenStore.Create;
end;
procedure TdwsCryptoLib.DataModuleDestroy(Sender: TObject);
begin
if FNonceFilename<>'' then begin
if FNonces.Count > 0 then
FNonces.SaveToFile(FNonceFilename)
else DeleteFile(FNonceFilename);
end;
FNonces.Free;
end;
procedure TdwsCryptoLib.dwsCryptoClassesEncryptionAESSHA256FullMethodsDecryptDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
Info.ResultAsDataString := DoAESFull(Info.ParamAsDataString[0], Info.ParamAsDataString[1], False);
end;
procedure TdwsCryptoLib.dwsCryptoClassesEncryptionAESSHA256FullMethodsEncryptDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
Info.ResultAsDataString := DoAESFull(Info.ParamAsDataString[0], Info.ParamAsDataString[1], True);
end;
procedure TdwsCryptoLib.dwsCryptoClassesEncryptionAESSHA3CTRMethodsDecryptDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
Info.ResultAsDataString := AES_SHA3_CTR(Info.ParamAsDataString[0], Info.ParamAsDataString[1], False);
end;
procedure TdwsCryptoLib.dwsCryptoClassesEncryptionAESSHA3CTRMethodsEncryptDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
Info.ResultAsDataString := AES_SHA3_CTR(Info.ParamAsDataString[0], Info.ParamAsDataString[1], True);
end;
procedure TdwsCryptoLib.dwsCryptoClassesEncryptionCryptProtectMethodsDecryptDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
Info.ResultAsDataString:=CryptUnProtect(Info.ParamAsDataString[0], Info.ParamAsDataString[1]);
end;
procedure TdwsCryptoLib.dwsCryptoClassesEncryptionCryptProtectMethodsEncryptDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
Info.ResultAsDataString:=CryptProtect(Info.ParamAsDataString[0], Info.ParamAsDataString[1]);
end;
procedure TdwsCryptoLib.dwsCryptoClassesHashCRC32MethodsHashDataEval(
Info: TProgramInfo; ExtObject: TObject);
var
crc : Cardinal;
begin
crc := SwapBytes(CRC32string(Info.ParamAsDataString[0]));
Info.ResultAsString := BinToHex(crc, 4);
end;
procedure TdwsCryptoLib.dwsCryptoClassesHashCRC32MethodsHMACEval(
Info: TProgramInfo; ExtObject: TObject);
begin
// just for completeness sake, not very useful :)
PerformHMAC(Info, HashCRC32, 4);
end;
procedure TdwsCryptoLib.dwsCryptoClassesHashRIPEMD160MethodsHashDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
PerformHashData(Info, HashRIPEMD160);
end;
procedure TdwsCryptoLib.dwsCryptoClassesHashRIPEMD160MethodsHMACEval(
Info: TProgramInfo; ExtObject: TObject);
begin
PerformHMAC(Info, HashRIPEMD160, 64);
end;
procedure TdwsCryptoLib.dwsCryptoClassesHashSHA3_256MethodsHashDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
PerformHashData(Info, HashSHA3_256);
end;
procedure TdwsCryptoLib.dwsCryptoClassesHashSHA3_256MethodsHMACEval(
Info: TProgramInfo; ExtObject: TObject);
begin
// not really needed as SHA-3 is resistant to length extension attacks
PerformHMAC(Info, HashSHA3_256, 64);
end;
procedure TdwsCryptoLib.dwsCryptoClassesMD5MethodsHashDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
PerformHashData(Info, HashMD5);
end;
procedure TdwsCryptoLib.dwsCryptoClassesNoncesMethodsCheckAndKeepEval(
Info: TProgramInfo; ExtObject: TObject);
begin
Info.ResultAsBoolean:=FNonces.CheckAndKeep(Info.ParamAsString[0], Info.ParamAsString[1])
end;
procedure TdwsCryptoLib.dwsCryptoClassesNoncesMethodsCheckAndRemoveEval(
Info: TProgramInfo; ExtObject: TObject);
begin
Info.ResultAsBoolean:=FNonces.CheckAndRemove(Info.ParamAsString[0], Info.ParamAsString[1])
end;
procedure TdwsCryptoLib.dwsCryptoClassesNoncesMethodsClearEval(
Info: TProgramInfo; ExtObject: TObject);
begin
FNonces.Clear;
end;
procedure TdwsCryptoLib.dwsCryptoClassesNoncesMethodsCollectEval(
Info: TProgramInfo; ExtObject: TObject);
begin
FNonces.Collect;
end;
// SetNonceFilename
//
procedure TdwsCryptoLib.SetNonceFilename(const name : String);
begin
FNonceFilename:=name;
if name<>'' then
FNonces.LoadFromFile(FNonceFilename);
end;
procedure TdwsCryptoLib.dwsCryptoClassesNoncesMethodsGenerateEval(
Info: TProgramInfo; ExtObject: TObject);
var
nonce : String;
begin
nonce:=CryptographicToken(120);
FNonces.Register(nonce, Info.ParamAsInteger[0]*0.001, Info.ParamAsString[1]);
Info.ResultAsString:=nonce;
end;
procedure TdwsCryptoLib.dwsCryptoClassesNoncesMethodsGetDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
Info.ResultAsString:=FNonces.TokenData[Info.ParamAsString[0]];
end;
procedure TdwsCryptoLib.dwsCryptoClassesNoncesMethodsRegisterEval(
Info: TProgramInfo; ExtObject: TObject);
begin
FNonces.Register(Info.ParamAsString[0], Info.ParamAsInteger[1],
Info.ParamAsString[2]);
end;
procedure TdwsCryptoLib.dwsCryptoClassesNoncesMethodsRemoveByDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
FNonces.RemoveByData(Info.ParamAsString[0]);
end;
procedure TdwsCryptoLib.dwsCryptoClassesNoncesMethodsRemoveEval(
Info: TProgramInfo; ExtObject: TObject);
begin
FNonces.Remove(Info.ParamAsString[0]);
end;
procedure TdwsCryptoLib.dwsCryptoClassesHashMD5MethodsHMACEval(
Info: TProgramInfo; ExtObject: TObject);
begin
PerformHMAC(Info, HashMD5, 64);
end;
procedure TdwsCryptoLib.dwsCryptoClassesSHA1MethodsHashDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
PerformHashData(Info, HashSHA1);
end;
procedure TdwsCryptoLib.dwsCryptoClassesHashSHA1MethodsHMACEval(
Info: TProgramInfo; ExtObject: TObject);
begin
PerformHMAC(Info, HashSHA1, 64);
end;
procedure TdwsCryptoLib.dwsCryptoClassesSHA256MethodsHashDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
PerformHashData(Info, HashSHA256);
end;
procedure TdwsCryptoLib.dwsCryptoClassesHashSHA256MethodsHMACEval(Info: TProgramInfo;
ExtObject: TObject);
begin
PerformHMAC(Info, HashSHA256, 64);
end;
procedure TdwsCryptoLib.dwsCryptoClassesHashSHA512MethodsHashDataEval(
Info: TProgramInfo; ExtObject: TObject);
begin
PerformHashData(Info, HashSHA512);
end;
procedure TdwsCryptoLib.dwsCryptoClassesHashSHA512MethodsHMACEval(
Info: TProgramInfo; ExtObject: TObject);
begin
PerformHMAC(Info, HashSHA512, 128);
end;
procedure TdwsCryptoLib.dwsCryptoFunctionsCryptographicRandomEval(
info: TProgramInfo);
begin
info.ResultAsDataString:=CryptographicRandom(info.ParamAsInteger[0]);
end;
procedure TdwsCryptoLib.dwsCryptoFunctionsCryptographicTokenEval(
info: TProgramInfo);
begin
info.ResultAsString:=CryptographicToken(info.ParamAsInteger[0]);
end;
procedure TdwsCryptoLib.UseTemporaryStorageForNonces;
var
signature : String;
digest : TSHA256Digest;
begin
signature := GetCurrentUserName+','+ParamStr(0);
digest := SHA256Digest(Pointer(signature), Length(signature)*SizeOf(Char));
NonceFilename := IncludeTrailingPathDelimiter(TPath.GetTempPath)
+ DigestToSimplifiedBase64(@digest, SizeOf(digest) div 2)
+ '.nonces';
end;
procedure TdwsCryptoLib.dwsCryptoFunctionsProcessUniqueRandomEval(
info: TProgramInfo);
begin
info.ResultAsString:=ProcessUniqueRandom;
end;
procedure TdwsCryptoLib.dwsCryptoClassesECCsecp256r1MethodsMakeKeyEval(
Info: TProgramInfo; ExtObject: TObject);
var
pub : TECCPublicKey;
priv : TECCPrivateKey;
begin
if ecc_make_key(pub, priv) then begin
Info.ParamAsDataString[0] := BytesToRawByteString(@pub, SizeOf(pub));
Info.ParamAsDataString[1] := BytesToRawByteString(@priv, SizeOf(priv));
FillChar(priv, SizeOf(priv), 0);
Info.ResultAsBoolean := True;
end else begin
Info.ParamAsString[0] := '';
Info.ParamAsString[1] := '';
Info.ResultAsBoolean := True;
end;
end;
procedure TdwsCryptoLib.dwsCryptoClassesECCsecp256r1MethodsECDHSharedSecretEval(
Info: TProgramInfo; ExtObject: TObject);
var
secret : TECCSecretKey;
pubData, privData : RawByteString;
begin
pubData := Info.ParamAsDataString[0];
if Length(pubData) <> SizeOf(TECCPublicKey) then
raise Exception.Create('Invalid public key size');
privData := Info.ParamAsDataString[1];
if Length(privData) <> SizeOf(TECCPrivateKey) then
raise Exception.Create('Invalid private key size');
if not ecdh_shared_secret(TECCPublicKey(Pointer(pubData)^), TECCPrivateKey(Pointer(privData)^), secret) then
raise Exception.Create('Invalid ECC keys');
Info.ResultAsDataString := BytesToRawByteString(@secret, SizeOf(secret));
end;
procedure TdwsCryptoLib.dwsCryptoClassesECCsecp256r1MethodsECDSASignEval(
Info: TProgramInfo; ExtObject: TObject);
var
privData, hashData : RawByteString;
sign : TECCSignature;
begin
privData := Info.ParamAsDataString[0];
if Length(privData) <> SizeOf(TECCPrivateKey) then
raise Exception.Create('Invalid private key size');
hashData := HexToBin(Info.ParamAsString[1]);
if Length(hashData) <> SizeOf(TECCHash) then
raise Exception.Create('Invalid hash hexadecimal size');
if not ecdsa_sign(TECCPrivateKey(Pointer(privData)^), TECCHash(Pointer(hashData)^), sign) then
raise Exception.Create('Invalid ECC key for signature');
Info.ResultAsDataString := BytesToRawByteString(@sign, SizeOf(sign));
end;
procedure TdwsCryptoLib.dwsCryptoClassesECCsecp256r1MethodsECDSAVerifyEval(
Info: TProgramInfo; ExtObject: TObject);
var
pubData, hashData, signData : RawByteString;
begin
pubData := Info.ParamAsDataString[0];
if Length(pubData) <> SizeOf(TECCPublicKey) then
raise Exception.Create('Invalid public key size');
hashData := HexToBin(Info.ParamAsString[1]);
if Length(hashData) <> SizeOf(TECCHash) then
raise Exception.Create('Invalid hash hexadecimal size');
signData := Info.ParamAsDataString[2];
if Length(signData) <> SizeOf(TECCSignature) then
raise Exception.Create('Invalid signature size');
Info.ResultAsBoolean := ecdsa_verify(
TECCPublicKey(Pointer(pubData)^), TECCHash(Pointer(hashData)^),
TECCSignature(Pointer(signData)^)
);
end;
end.