Xbase++

Create Egypt ITIDA CAdES-BES .p7s Signature (with strings in-memory)

See more Egypt ITIDA Examples

Demonstrates how to create a .p7s signature that fits Egypt's ITIDA requirements.

Note: This example requires Chilkat v9.5.0.75 or greater.

Xbase++

LOCAL nSuccess
LOCAL oCrypt
LOCAL oCert
LOCAL oCmsOptions
LOCAL oJsonSigningAttrs
LOCAL cTextToSign
LOCAL cSigBase64

nSuccess := 0

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

oCrypt := CreateObject("Chilkat.Crypt2")

oCert := CreateObject("Chilkat.Cert")

//  There are many ways to load the certificate.  
//  This example was created for a customer using an ePass2003 USB token.
//  Assuming the USB token is the only source of a hardware-based private key..
nSuccess := oCert:LoadFromSmartcard("")
IF (nSuccess != 1)
    ? oCert:LastErrorText
    oCrypt:destroy()
    oCert:destroy()
    RETURN
ENDIF

//  Tell the crypt component to use this cert.
nSuccess := oCrypt:SetSigningCert(oCert)
IF (nSuccess != 1)
    ? oCrypt:LastErrorText
    oCrypt:destroy()
    oCert:destroy()
    RETURN
ENDIF

oCmsOptions := CreateObject("Chilkat.JsonObject")
//  Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
oCmsOptions:UpdateBool("DigestData", 1)
oCmsOptions:UpdateBool("OmitAlgorithmIdNull", 1)
oCrypt:CmsOptions := oCmsOptions:Emit()

//  The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures. 
//  To create a CAdES-BES signature, set this property equal to true. 
oCrypt:CadesEnabled := 1

oCrypt:HashAlgorithm := "sha256"

oJsonSigningAttrs := CreateObject("Chilkat.JsonObject")
oJsonSigningAttrs:UpdateInt("contentType", 1)
oJsonSigningAttrs:UpdateInt("signingTime", 1)
oJsonSigningAttrs:UpdateInt("messageDigest", 1)
oJsonSigningAttrs:UpdateInt("signingCertificateV2", 1)
oCrypt:SigningAttributes := oJsonSigningAttrs:Emit()

//  By default, all the certs in the chain of authentication are included in the signature.
//  If desired, we can choose to only include the signing certificate:
oCrypt:IncludeCertChain := 0

//  Make sure we sign the utf-8 byte representation of the JSON string
oCrypt:Charset := "utf-8"

//  Create the CAdES-BES signature.
cTextToSign := '"issuer""address""branchID""0""country""EG""regionCity...'

oCrypt:EncodingMode := "base64"
cSigBase64 := oCrypt:SignStringENC(cTextToSign)
IF (oCrypt:LastMethodSuccess == 0)
    ? oCrypt:LastErrorText
    oCrypt:destroy()
    oCert:destroy()
    oCmsOptions:destroy()
    oJsonSigningAttrs:destroy()
    RETURN
ENDIF

? "Base64 signature:"
? cSigBase64

oCrypt:destroy()
oCert:destroy()
oCmsOptions:destroy()
oJsonSigningAttrs:destroy()