Objective-C

PKCS7 Decrypt MIME

See more MIME Examples

Loads a PKCS7 encrypted MIME file and decrypts. The cert and private key used for decryption is loaded from a PFX file. Objective-C

#import <CkoMime.h>
#import <NSString.h>

BOOL success = NO;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

CkoMime *mime = [[CkoMime alloc] init];

//  Load the MIME
success = [mime LoadMimeFile: @"encryptedMime.txt"];
if (success == NO) {
    NSLog(@"%@",mime.LastErrorText);
    return;
}

//  The AddPfxSourceFile and/or AddPfxSourceData
//  methods may be called one or more times (one per PFX)
//  to add sources from which the MIME component will
//  search for certificates and private keys when decrypting.
NSString *pfxPassword = @"myPassword";
success = [mime AddPfxSourceFile: @"myCertAndPrivateKey.pfx" password: pfxPassword];
if (success == NO) {
    NSLog(@"%@",mime.LastErrorText);
    return;
}

//  Decrypt...
success = [mime Decrypt];
if (success == NO) {
    NSLog(@"%@",mime.LastErrorText);
    return;
}

//  Display the decrypted MIME:
NSLog(@"%@",[mime GetMime]);