Delphi DLL Requires Chilkat v11.0.0+

Workaround for the deprecated Crypt2.VerifyString method

Shows how to replace the deprecated VerifyString method. (Chilkat is moving away from the use of CkByteData.) Delphi DLL

var
crypt: HCkCrypt2;
originalText: PWideChar;
sigPath: PWideChar;
detachedSigBytes: HCkByteData;
verified: Boolean;
bdSig: HCkBinData;
encoding: PWideChar;

begin
crypt := CkCrypt2_Create();

//  Specifies how the original data bytes are converted to characters
CkCrypt2_putCharset(crypt,'utf-8');

originalText := 'this is the string that was signed.';
sigPath := 'c:/someDir/example.p7s';

//  ------------------------------------------------------------------------
//  The OpaqueVerifyString method is deprecated:

detachedSigBytes := CkByteData_Create();
CkByteData_loadFile(detachedSigBytes,sigPath);

verified := CkCrypt2_VerifyString(crypt,originalText,detachedSigBytes);

//  ------------------------------------------------------------------------
//  Workaround.
//  (Chilkat is moving away from using CkByteData)

bdSig := CkBinData_Create();
CkBinData_LoadFile(bdSig,sigPath);

encoding := 'base64';
CkCrypt2_putEncodingMode(crypt,encoding);
verified := CkCrypt2_VerifyStringENC(crypt,originalText,CkBinData__getEncoded(bdSig,encoding));

CkCrypt2_Dispose(crypt);
CkByteData_Dispose(detachedSigBytes);
CkBinData_Dispose(bdSig);