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(Objective-C) EuroCert Cloud Sign XMLSee more Signing in the Cloud ExamplesDemonstrates how to sign XML using the EuroCert cloud provider. The signing of the hash happens on a hardware token on the EuroCert server. Everything else involving the updating the XML to add the signature happens locally within Chilkat. Note: This example requires Chilkat v9.5.0.96 or later.
#import <CkoPkcs11.h> #import <NSString.h> #import <CkoCert.h> #import <CkoXml.h> #import <CkoXmlDSigGen.h> #import <CkoStringBuilder.h> // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems. CkoPkcs11 *pkcs11 = [[CkoPkcs11 alloc] init]; // Provide the path to the EuroCert Cloud PKCS11 driver. // If your application runs as a 64-bit process, use the path to the 64-bit ECSPKCS11.dll pkcs11.SharedLibPath = @"C:\\Users\\Public\\ECSIGNER\\PKCS11\\32\\ECSPKCS11.dll"; // At this time, we don't know what should be used for the PIN. // Perhaps it is documented online by EuroCert? NSString *pin = @"user:password"; int userType = 1; BOOL success = [pkcs11 QuickSession: [NSNumber numberWithInt: userType] pin: pin]; if (success == NO) { NSLog(@"%@",pkcs11.LastErrorText); return; } CkoCert *cert = [[CkoCert alloc] init]; success = [cert LoadFromFile: @"qa_data/certs/myCert.cer"]; if (success == NO) { NSLog(@"%@",cert.LastErrorText); return; } // Tell the certificate to link with the PKCS11 session. // The cert's private key should be installed on the CloudHSM. // If there are multiple private keys on the CloudHSM, then Chilkat will automatically // locate and use the private key corresponding to the certificate. success = [cert LinkPkcs11: pkcs11]; if (success == NO) { NSLog(@"%@",cert.LastErrorText); return; } // -------------------------------------------------------------------------- // At this point, we have the cert to be used for signing. // Our XML signing code is the same as for a cert obtained from any other source.. // First generate the following XML to be signed: // Use this online tool to generate code from sample XML: // Generate Code to Create XML // <?xml version="1.0" encoding="UTF-8" standalone="no" ?> // <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"> // <SOAP-ENV:Header> // <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" SOAP-ENV:mustUnderstand="1"></wsse:Security> // </SOAP-ENV:Header> // <SOAP-ENV:Body xmlns:SOAP-SEC="http://schemas.xmlsoap.org/soap/security/2000-12" SOAP-SEC:id="Body"> // <z:FooBar xmlns:z="http://example.com" /> // </SOAP-ENV:Body> // </SOAP-ENV:Envelope> CkoXml *xml = [[CkoXml alloc] init]; xml.Tag = @"SOAP-ENV:Envelope"; [xml AddAttribute: @"xmlns:SOAP-ENV" value: @"http://schemas.xmlsoap.org/soap/envelope/"]; [xml UpdateAttrAt: @"SOAP-ENV:Header|wsse:Security" autoCreate: YES attrName: @"xmlns:wsse" attrValue: @"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd"]; [xml UpdateAttrAt: @"SOAP-ENV:Header|wsse:Security" autoCreate: YES attrName: @"SOAP-ENV:mustUnderstand" attrValue: @"1"]; [xml UpdateAttrAt: @"SOAP-ENV:Body" autoCreate: YES attrName: @"xmlns:SOAP-SEC" attrValue: @"http://schemas.xmlsoap.org/soap/security/2000-12"]; [xml UpdateAttrAt: @"SOAP-ENV:Body" autoCreate: YES attrName: @"SOAP-SEC:id" attrValue: @"Body"]; [xml UpdateAttrAt: @"SOAP-ENV:Body|z:FooBar" autoCreate: YES attrName: @"xmlns:z" attrValue: @"http://example.com"]; CkoXmlDSigGen *gen = [[CkoXmlDSigGen alloc] init]; // Indicate where the Signature will be inserted. gen.SigLocation = @"SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security"; // Add a reference to the fragment of the XML to be signed. // Note: "Body" refers to the XML element having an "id" equal to "Body", where "id" is case insensitive // and where any namespace might qualify the attribute. In this case, the SOAP-ENV:Body fragment is signed // NOT because the tag = "Body", but because it has SOAP-SEC:id="Body" [gen AddSameDocRef: @"Body" digestMethod: @"sha1" canonMethod: @"EXCL_C14N" prefixList: @"" refType: @""]; // (You can read about the SignedInfoPrefixList in the online reference documentation. It's optional..) gen.SignedInfoPrefixList = @"wsse SOAP-ENV"; // Provide the private key for signing via the certificate, and indicate that // we want the base64 of the certificate embedded in the KeyInfo. gen.KeyInfoType = @"X509Data"; gen.X509Type = @"Certificate"; BOOL bUsePrivateKey = YES; success = [gen SetX509Cert: cert usePrivateKey: bUsePrivateKey]; if (success != YES) { NSLog(@"%@",gen.LastErrorText); success = [pkcs11 CloseSession]; return; } // Everything's specified. Now create and insert the Signature CkoStringBuilder *sbXml = [[CkoStringBuilder alloc] init]; xml.EmitCompact = YES; [xml GetXmlSb: sbXml]; success = [gen CreateXmlDSigSb: sbXml]; if (success != YES) { NSLog(@"%@",gen.LastErrorText); success = [pkcs11 CloseSession]; return; } // Examine the XML with the digital signature inserted NSLog(@"%@",[sbXml GetAsString]); // -------------------------------------------------------------------------- // Revert to an unauthenticated session by calling Logout. success = [pkcs11 Logout]; if (success == NO) { NSLog(@"%@",pkcs11.LastErrorText); success = [pkcs11 CloseSession]; return; } // When finished, close the session. // It is important to close the session (memory leaks will occur if the session is not properly closed). success = [pkcs11 CloseSession]; if (success == NO) { NSLog(@"%@",pkcs11.LastErrorText); return; } NSLog(@"%@",@"Success."); |
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