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(Unicode C) PKCS7 Encrypt MIMEEncrypt MIME using a digital certificate to create PKCS7 encrypted S/MIME.
#include <C_CkMimeW.h> #include <C_CkCertW.h> void ChilkatSample(void) { HCkMimeW mime; BOOL success; HCkCertW cert; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. mime = CkMimeW_Create(); // Build a simple MIME message to be encrypted: success = CkMimeW_AddHeaderField(mime,L"Content-Type",L"text/plain"); success = CkMimeW_AddHeaderField(mime,L"abc",L"123"); CkMimeW_SetBody(mime,L"This is a test"); // A digital certificate is required to create PKCS7 encrypted MIME. // It can come from a variety of sources: .cer file, .pfx file, PEM files, // an in-memory representation, or directly from a Windows // registry-based certificate store. // This example will load a certificate object from a .cer file. // Note: Only the public-key is required to encrypt. (Decryption // requires a private key.) cert = CkCertW_Create(); success = CkCertW_LoadFromFile(cert,L"myCert.cer"); if (success == FALSE) { wprintf(L"%s\n",CkCertW_lastErrorText(cert)); CkMimeW_Dispose(mime); CkCertW_Dispose(cert); return; } // Encrypt the MIME: success = CkMimeW_Encrypt(mime,cert); if (success == FALSE) { wprintf(L"%s\n",CkMimeW_lastErrorText(mime)); CkMimeW_Dispose(mime); CkCertW_Dispose(cert); return; } // Display the MIME: wprintf(L"%s\n",CkMimeW_getMime(mime)); // The resulting S/MIME looks something like this: // abc: 123 // Content-Disposition: attachment; filename="smime.p7m" // Content-Transfer-Encoding: base64 // Content-Type: application/x-pkcs7-mime; // name="smime.p7m" // // MIICAQYJKoZIhvcNAQcDoIIB8jCCAe4CAQAxggGFMIIBgQIBADBpMFUxCzAJBgNVBAYTAlpBMSUw // IwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBMdGQuMR8wHQYDVQQDExZUaGF3dGUgQ29k // ZSBTaWduaW5nIENBAhB4ouTcAmLszrGi170k1deSMA0GCSqGSIb3DQEBAQUABIIBABz59iwVufLZ // QIPs0whUYMtBjIQxg5IOCxpoKJeJmLVzu9Q5Q1poxG9uYOveybS9c4wbl5A0DFfKTW5O4HhHcOHW // TgcH4iqdwhiFWm/q9d5rjceJWBFQsGOcgoXSU/U2Xp+N47/+Pqyc5XJbxKnOc4YhPzO320JZsNB6 // p1NGk5SNnWqgbUDmEnfH8ZPHSV7dNi2aiFALYTyLjyp0lqJCsdZ524OPTZFfusrl/9ibPAW7jKuI // FgDCcBtRJvolVF8iIHxaTw4rhk0qb1KWzxvB5j9HSLdyIKIPhZbxeS10bx18YkSsBlKfdKRalQag // 3oWSRdsK9/N75YHG8Pm+x9BOHUAwYAYJKoZIhvcNAQcBMBkGCCqGSIb3DQMCMA0CAToECAb+toBW // txZigDhGZKSpUpuTiWvvSMemX/c79sSnMpuefVwGKFTDgXVLE2SoD5a9Yh5vcG7Mhl2IkilVwOMc // fi23+g== CkMimeW_Dispose(mime); CkCertW_Dispose(cert); } |
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