VB.NET

Example: Crypt2.GetSignedAttributes method

Demonstrates how to call the GetSignedAttributes method. VB.NET

Dim success As Boolean = False

Dim crypt As New Chilkat.Crypt2

Dim bdPkcs7 As New Chilkat.BinData
success = bdPkcs7.LoadFile("qa_data/cades/CAdES-T/Signature-C-T-1.p7m")
If (success = False) Then
    Debug.WriteLine(bdPkcs7.LastErrorText)
    Exit Sub
End If


Dim json As New Chilkat.JsonObject
json.EmitCompact = False

Dim sbJson As New Chilkat.StringBuilder
Dim i As Integer = 0
Dim tryNext As Boolean = True
While tryNext
    If (crypt.GetSignedAttributes(i,bdPkcs7,sbJson) = True) Then
        json.LoadSb(sbJson)
        Debug.WriteLine(i & ": ")
        Debug.WriteLine(json.Emit())
    Else
        tryNext = False
    End If


    i = i + 1
End While

' Sample output:

' 0: 
' {
'   "signedAttributes": [
'     {
'       "oid": "1.2.840.113549.1.9.3",
'       "name": "Content Type"
'     },
'     {
'       "oid": "1.2.840.113549.1.9.5",
'       "name": "Signing Time"
'     },
'     {
'       "oid": "1.2.840.113549.1.9.4",
'       "name": "Message Digest"
'     },
'     {
'       "oid": "1.2.840.113549.1.9.16.2.47",
'       "name": "Signing Certificate V2"
'     }
'   ]
' }