(PureBasic) 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.

For more information, see https://validar.iti.gov.br/

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkCert.pb"
IncludeFile "CkJsonObject.pb"
IncludeFile "CkCrypt2.pb"

Procedure ChilkatExample()

    ; 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
    ; ------------------------------------------------------------------------------------------------------

    crypt.i = CkCrypt2::ckCreate()
    If crypt.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    cert.i = CkCert::ckCreate()
    If cert.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success.i = CkCert::ckLoadPfxFile(cert,"mySigningCert.pfx","pfxPassword")
    If success <> 1
        Debug CkCert::ckLastErrorText(cert)
        CkCrypt2::ckDispose(crypt)
        CkCert::ckDispose(cert)
        ProcedureReturn
    EndIf

    CkCrypt2::ckSetSigningCert(crypt,cert)

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

    ; Create JSON to indicate which signing attributes to include.
    attrs.i = CkJsonObject::ckCreate()
    If attrs.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckUpdateBool(attrs,"contentType",1)
    CkJsonObject::ckUpdateBool(attrs,"signingTime",1)
    CkJsonObject::ckUpdateBool(attrs,"messageDigest",1)
    CkJsonObject::ckUpdateBool(attrs,"signingCertificateV2",1)

    CkJsonObject::ckUpdateString(attrs,"policyId.hashAlg","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
    CkJsonObject::ckUpdateString(attrs,"policyId.id","2.16.76.1.7.1.1.2.3")
    CkJsonObject::ckUpdateString(attrs,"policyId.profile","PA_AD_RB_v2_3")

    CkCrypt2::setCkSigningAttributes(crypt, CkJsonObject::ckEmit(attrs))

    ; The input file can be any type of file.
    inFile.s = "toBeSigned.pdf"
    outFile.s = "signed.pdf.p7s"

    success = CkCrypt2::ckCreateP7M(crypt,inFile,outFile)
    If success = 0
        Debug CkCrypt2::ckLastErrorText(crypt)
        CkCrypt2::ckDispose(crypt)
        CkCert::ckDispose(cert)
        CkJsonObject::ckDispose(attrs)
        ProcedureReturn
    EndIf

    Debug "Success."


    CkCrypt2::ckDispose(crypt)
    CkCert::ckDispose(cert)
    CkJsonObject::ckDispose(attrs)


    ProcedureReturn
EndProcedure