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(Objective-C) Extract PKCS7 from MIME and DecryptExtracts the base64-encoded PKCS7 body of a MIME message to a file, and then decrypts using Chilkat Crypt2.
#import "CkoMime.h" #import "CkoCrypt2.h" #import "NSString.h" CkoMime *mime = [[CkoMime alloc] init]; BOOL success; success = [mime UnlockComponent: @"Anything for 30-day trial"]; if (success == NO) { NSLog(@"%@",mime.LastErrorText); return; } success = [mime LoadMimeFile: @"c:/aaworkarea/EmailInBytes.txt"]; if (success != YES) { NSLog(@"%@",mime.LastErrorText); return; } success = [mime SaveBody: @"c:/aaworkarea/smime.p7m"]; if (success != YES) { NSLog(@"%@",mime.LastErrorText); return; } CkoCrypt2 *crypt = [[CkoCrypt2 alloc] init]; success = [crypt UnlockComponent: @"Anything for 30-day trial"]; if (success == NO) { NSLog(@"%@",crypt.LastErrorText); return; } success = [crypt AddPfxSourceFile: @"c:/aaworkarea/my.pfx" password: @"pfxPassword"]; if (success == NO) { NSLog(@"%@",crypt.LastErrorText); return; } // Indicate the public-key (PKCS7) encryption/decryption should be used: crypt.CryptAlgorithm = @"pki"; NSString *inPath = @"c:/aaworkarea/smime.p7m"; NSString *outPath = @"c:/aaworkarea/decrypted.dat"; success = [crypt CkDecryptFile: inPath destFile: outPath]; if (success == NO) { NSLog(@"%@",crypt.LastErrorText); return; } NSLog(@"%@",@"Success."); |
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