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(C++) Sign JSON to Create CAdES P7S BytesDemonstrates how to sign JSON using a certificate + private key from a .p12/.pfx to create a CAdES P7S byte array.
#include <CkCrypt2.h> #include <CkCert.h> #include <CkJsonObject.h> #include <CkByteData.h> void ChilkatSample(void) { // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkCrypt2 crypt; CkCert cert; bool success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123"); if (success != true) { std::cout << cert.lastErrorText() << "\r\n"; return; } // Tell the crypt component to use this cert. success = crypt.SetSigningCert(cert); if (success != true) { std::cout << crypt.lastErrorText() << "\r\n"; return; } // The CadesEnabled property applies to all methods that create PKCS7 signatures. // To create a CAdES-BES signature, set this property equal to true. crypt.put_CadesEnabled(true); crypt.put_HashAlgorithm("sha256"); CkJsonObject jsonSigningAttrs; jsonSigningAttrs.UpdateInt("contentType",1); jsonSigningAttrs.UpdateInt("signingTime",1); jsonSigningAttrs.UpdateInt("messageDigest",1); jsonSigningAttrs.UpdateInt("signingCertificateV2",1); crypt.put_SigningAttributes(jsonSigningAttrs.emit()); // By default, all the certs in the chain of authentication are included in the signature. // If desired, we can choose to only include the signing certificate: crypt.put_IncludeCertChain(false); // Create the CAdES-BES attached signature, which contains the original data. crypt.put_Charset("utf-8"); CkByteData cadesP7s; success = crypt.OpaqueSignString("{ \"abc\": 123}",cadesP7s); if (crypt.get_LastMethodSuccess() == false) { std::cout << crypt.lastErrorText() << "\r\n"; return; } // Verify the signature and extract the original JSON: const char *originalJson = crypt.opaqueVerifyString(cadesP7s); if (crypt.get_LastMethodSuccess() == false) { std::cout << crypt.lastErrorText() << "\r\n"; return; } std::cout << "Original JSON: " << originalJson << "\r\n"; std::cout << "Success!" << "\r\n"; } |
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