Java
Chilkat2 Java
Decrypt S/MIME using a Certificate with Private Key Access
See more MIME Examples
Loads a CMS/PKCS #7 encrypted S/MIME message and decrypts it back to the original MIME content.
DecryptUsingCert takes a single certificate that already has access to its associated private key, for example a certificate loaded from a PFX.
The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.
Background. A public-only certificate is insufficient for decryption. The certificate passed to DecryptUsingCert must be linked to its private key, as happens when it is loaded from a PFX/P12 file.
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import com.chilkatsoft.chilkat2.Cert;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Mime;
public class ChilkatExample {
public static void main(String[] args) {
Mime mime = new Mime();
try {
mime.loadMimeFile("qa_data/encrypted.eml");
} catch (ChilkatException e) {
System.out.println(e.getLastErrorText());
return;
}
// Decrypt using a certificate that already provides access to its private key (for example loaded
// from a PFX). The only argument is the certificate.
String pfxPassword = "myPfxPassword";
Cert cert = new Cert();
String body;
try {
cert.loadPfxFile("qa_data/recipient.pfx", pfxPassword);
mime.decryptUsingCert(cert);
body = mime.getBodyDecoded();
} catch (ChilkatException e) {
System.out.println(e.getLastErrorText());
return;
}
System.out.println(body);
}
}