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(Unicode C) Encrypt using Cert to produce -----BEGIN PKCS7----- ... -----END PKCS7-----Demonstrates how to encrypt using a certificate to produce output such as: -----BEGIN PKCS7----- MIIHPwYJKoZIhvcNAQcEoIIHMDCCBywC ... ... ... -----END PKCS7-----The certificate to be used is not your own, but the certificate of the intended recipient of the message.
#include <C_CkCrypt2W.h> #include <C_CkCertW.h> #include <C_CkStringBuilderW.h> void ChilkatSample(void) { HCkCrypt2W crypt; HCkCertW cert; BOOL success; const wchar_t *toBeEncrypted; const wchar_t *encryptedStr; HCkStringBuilderW sb; const wchar_t *outStr; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. crypt = CkCrypt2W_Create(); // Specify the encryption to be used. // "pki" indicates "Public Key Infrastructure" and will create a PKCS7 encrypted (enveloped) message. CkCrypt2W_putCryptAlgorithm(crypt,L"pki"); CkCrypt2W_putPkcs7CryptAlg(crypt,L"aes"); CkCrypt2W_putKeyLength(crypt,128); CkCrypt2W_putOaepHash(crypt,L"sha256"); CkCrypt2W_putOaepPadding(crypt,TRUE); // A certificate is needed as the encryption key.. cert = CkCertW_Create(); success = CkCertW_LoadFromFile(cert,L"qa_data/certs/testCert.pem"); if (success != TRUE) { wprintf(L"%s\n",CkCertW_lastErrorText(cert)); CkCrypt2W_Dispose(crypt); CkCertW_Dispose(cert); return; } // Tell the crypt object to use the certificate. CkCrypt2W_SetEncryptCert(crypt,cert); toBeEncrypted = L"This string is to be encrypted."; // Get the result in multi-line BASE64 MIME format. CkCrypt2W_putEncodingMode(crypt,L"base64_mime"); encryptedStr = CkCrypt2W_encryptStringENC(crypt,toBeEncrypted); if (success != TRUE) { wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt)); CkCrypt2W_Dispose(crypt); CkCertW_Dispose(cert); return; } // Make a "-----BEGIN PKCS7-----" ... "-----END PKCS7-----" sandwich... sb = CkStringBuilderW_Create(); CkStringBuilderW_AppendLine(sb,L"-----BEGIN PKCS7-----",TRUE); CkStringBuilderW_Append(sb,encryptedStr); CkStringBuilderW_AppendLine(sb,L"-----END PKCS7-----",TRUE); outStr = CkStringBuilderW_getAsString(sb); wprintf(L"%s\n",outStr); // Sample output: // -----BEGIN PKCS7----- // MIICYQYJKoZIhvcNAQcDoIICUjCCAk4CAQAxggH5MIIB9QIBADCBsTCBmzELMAkGA1UEBhMCR0Ix // GzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgGA1UEChMR // Q09NT0RPIENBIExpbWl0ZWQxQTA/BgNVBAMTOENPTU9ETyBTSEEtMjU2IENsaWVudCBBdXRoZW50 // aWNhdGlvbiBhbmQgU2VjdXJlIEVtYWlsIENBAhEAuBl4qE2MODB05C5h53M5UDA4BgkqhkiG9w0B // AQcwK6APMA0GCWCGSAFlAwQCAQUAoRgwFgYJKoZIhvcNAQEIMAkGBSsOAwIaBQAEggEAyZejlE37 // awl0bCWVbOCqf9yLSN17mZRamG8FHDh3nNu11G0+oyJtsPDEnSKsQig0V67MZ+hcWV+uf4ytcjyx // H0gs5uex+LwkB+c3ZTOt18IYWFtRilg1HFy1ZN3t0D2QbxYy+i1TXOOwp3gAHL45vRCJ0FbKyQ36 // pKl0XLe+lRvp2EiJCKVjxtX8VcZOKT4xkG7yOARaCQceth6pA58Dg0yzAz7w4nD2UgAlNzrXG69X // e+7e7yfBv47RRqFiQqDpCn+fM/PmFbUyqBppMwc64yP+fJek8VyJw2/UaXWWM4iSKSflk90tiHwf // loEU3It4arnSv94fZQo0v129aBqpWzBMBgkqhkiG9w0BBwEwHQYJYIZIAWUDBAECBBCohUgm5qX+ // TE6PxtPCmWi8gCBgbNg39emAB+AqLozm+vSLjZOGfg3M52gccKUJ8tg8XQ== // -----END PKCS7----- CkCrypt2W_Dispose(crypt); CkCertW_Dispose(cert); CkStringBuilderW_Dispose(sb); } |
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