Objective-C

Create CAdES Signature (.p7s) Compliant with ICP-Brazil Digital Signature Standard

See more CAdES Examples

Demonstrates how to create a CMS signature w/ policy ID that is compliant with the ICP-Brazil Digital Signature Standard. Objective-C

#import <CkoCrypt2.h>
#import <CkoCert.h>
#import <CkoJsonObject.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.

// ------------------------------------------------------------------------------------------------------
// Note: This example creates a CAdES (CMS) signature (.p7s) that contains the PDF.
// It is different than signing a PDF.  To sign a PDF where the resulting PDF contains the CMS signature,
// see this example:  Sign PDF for ICP-Brasil
// ------------------------------------------------------------------------------------------------------

CkoCrypt2 *crypt = [[CkoCrypt2 alloc] init];

CkoCert *cert = [[CkoCert alloc] init];
success = [cert LoadPfxFile: @"mySigningCert.pfx" password: @"pfxPassword"];
if (success != YES) {
    NSLog(@"%@",cert.LastErrorText);
    return;
}

[crypt SetSigningCert: cert];

// See https://www.gov.br/iti/pt-br/assuntos/repositorio/artefatos-de-assinatura-digital

// Create JSON to indicate which signing attributes to include.
CkoJsonObject *attrs = [[CkoJsonObject alloc] init];
[attrs UpdateBool: @"contentType" value: YES];
[attrs UpdateBool: @"signingTime" value: YES];
[attrs UpdateBool: @"messageDigest" value: YES];
[attrs UpdateBool: @"signingCertificateV2" value: YES];

[attrs UpdateString: @"policyId.hashAlg" value: @"SHA256"];

// Listed here are the currently existing profiles. (Chilkat will add additional ICP Brasil policy profiles in future versions as new ones are created.)
// See https://www.gov.br/iti/pt-br/assuntos/repositorio/artefatos-de-assinatura-digital for more information.
// 
// PA_AD_RA --> 2.16.76.1.7.1.5.1
// PA_AD_RA_v1_1 --> 2.16.76.1.7.1.5.1.1
// PA_AD_RA_v1_2 --> 2.16.76.1.7.1.5.1.2
// PA_AD_RA_v2_0 --> 2.16.76.1.7.1.5.2
// PA_AD_RA_v2_1 --> 2.16.76.1.7.1.5.2.1
// PA_AD_RA_v2_2 --> 2.16.76.1.7.1.5.2.2
// PA_AD_RA_v2_3 --> 2.16.76.1.7.1.5.2.3
// PA_AD_RA_v2_4 --> 2.16.76.1.7.1.5.2.4
// PA_AD_RB --> 2.16.76.1.7.1.1.1
// PA_AD_RB_v1_1 --> 2.16.76.1.7.1.1.1.1
// PA_AD_RB_v2_0 --> 2.16.76.1.7.1.1.2
// PA_AD_RB_v2_1 --> 2.16.76.1.7.1.1.2.1
// PA_AD_RB_v2_2 --> 2.16.76.1.7.1.1.2.2
// PA_AD_RB_v2_3 --> 2.16.76.1.7.1.1.2.3
// PA_AD_RC --> 2.16.76.1.7.1.4.1
// PA_AD_RC_v1_1 --> 2.16.76.1.7.1.4.1.1
// PA_AD_RC_v2_0 --> 2.16.76.1.7.1.4.2
// PA_AD_RC_v2_1 --> 2.16.76.1.7.1.4.2.1
// PA_AD_RC_v2_2 --> 2.16.76.1.7.1.4.2.2
// PA_AD_RC_v2_3 --> 2.16.76.1.7.1.4.2.3
// PA_AD_RT --> 2.16.76.1.7.1.2.1
// PA_AD_RT_v1_1 --> 2.16.76.1.7.1.2.1.1
// PA_AD_RT_v2_0 --> 2.16.76.1.7.1.2.2
// PA_AD_RT_v2_1 --> 2.16.76.1.7.1.2.2.1
// PA_AD_RT_v2_2 --> 2.16.76.1.7.1.2.2.2
// PA_AD_RT_v2_3 --> 2.16.76.1.7.1.2.2.3
// PA_AD_RV --> 2.16.76.1.7.1.3.1
// PA_AD_RV_v1_1 --> 2.16.76.1.7.1.3.1.1
// PA_AD_RV_v2_0 --> 2.16.76.1.7.1.3.2
// PA_AD_RV_v2_1 --> 2.16.76.1.7.1.3.2.1
// PA_AD_RV_v2_2 --> 2.16.76.1.7.1.3.2.2
// PA_AD_RV_v2_3 --> 2.16.76.1.7.1.3.2.3

// Set the policy OID and the profile name
[attrs UpdateString: @"policyId.id" value: @"2.16.76.1.7.1.1.2.3"];
[attrs UpdateString: @"policyId.profile" value: @"PA_AD_RB_v2_3"];

crypt.SigningAttributes = [attrs Emit];

// The input file can be any type of file.
NSString *inFile = @"toBeSigned.pdf";
NSString *outFile = @"signed.pdf.p7s";

success = [crypt CreateP7M: inFile p7mPath: outFile];
if (success == NO) {
    NSLog(@"%@",crypt.LastErrorText);
    return;
}

NSLog(@"%@",@"Success.");