Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#Mono C#.NET Core C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicCkPythonChilkat2-PythonRubySQL ServerSwift 2Swift 3,4,5...TclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.jsExcelGo

VB.NET UWP/WinRT Examples

Web API Categories

ASN.1
Amazon EC2
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Azure Cloud Storage
Azure Service Bus
Azure Table Service
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
EBICS
ECC
Ed25519
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
GMail SMTP/IMAP/POP
Geolocation
Google APIs
Google Calendar
Google Cloud SQL
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
Gzip
HTML-to-XML/Text
HTTP

HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)
Java KeyStore (JKS)
MHT / HTML Email
MIME
MS Storage Providers
Microsoft Graph
NTLM
OAuth1
OAuth2
OIDC
Office365
OneDrive
OpenSSL
Outlook
Outlook Calendar
Outlook Contact
PDF Signatures
PEM
PFX/P12
PKCS11
POP3
PRNG
REST
REST Misc
RSA
SCP
SCard
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
ScMinidriver
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(VB.NET UWP/WinRT) Duplicate Java Secure Token Creation

Demonstrates how to duplicate some Java code that creates an RSA signature to create a base64 token.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

' This requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

' This example duplicates the following Java code:


' public X509Certificate2 cert = new X509Certificate2(@"Some path to p12/p12file_name.p12","Password_for_p12"); 
' 
' public string GenerateSignToken(double timeValidityMin){ 
'   string equalsSign = ":="; 
'   string timeCreated = DateTime.Now.ToString("yyyy-MM-ddTHH:mm:ss.fffzzz"); 
'   string tokenTimeInfo = "validityTimeMinutes" + equalsSign + timeValidityMin + ";"+"timeCreated" + equalsSign + timeCreated; 
'   string signature = SignData(tokenTimeInfo); 
'   string secureToken = tokenTimeInfo + ";" + "signature" + equalsSign + signature; 
'   return Base64UrlEncode(secureToken); 
' } 
'  
' public string SignData(string stringToSign){ 
'   byte[] dataToSign = Encoding.UTF8.GetBytes(stringToSign); 
'   RSACryptoServiceProvider privKey = (RSACryptoServiceProvider)cert.PrivateKey; 
'   CspKeyContainerInfo containerInfo = new RSACryptoServiceProvider().CspKeyContainerInfo; 
'   CspParameters cspparams = new CspParameters(containerInfo.ProviderType, containerInfo.ProviderName, privKey.CspKeyContainerInfo.KeyContainerName); 
'   privKey = new RSACryptoServiceProvider(cspparams); 
'   string id = CryptoConfig.MapNameToOID("SHA256"); 
'   byte[] sign = privKey.SignData(dataToSign, id); 
'   bool res = privKey.VerifyData(dataToSign, id, sign); 
'   return Convert.ToBase64String(sign).Replace('+', '-').Replace('/', '_').Replace("=", ""); 
' } 
'  
' private static string Base64UrlEncode(string input){ 
'   var inputBytes = Encoding.UTF8.GetBytes(input); 
'   return Convert.ToBase64String(inputBytes).Replace('+', '-').Replace('/', '_').Replace("=", ""); 
' } 

Dim success As Boolean

Dim dt As New Chilkat.CkDateTime
dt.SetFromCurrentSystemTime()
Dim timeCreated As String = dt.GetAsTimestamp(True)

' Such as 2019-04-01T19:35:44-05:00
Debug.WriteLine(timeCreated)

Dim sbToken As New Chilkat.StringBuilder
sbToken.Append("validityTimeMinutes:=10.0;timeCreated:=")
sbToken.Append(timeCreated)


Dim cert As New Chilkat.Cert
success = cert.LoadPfxFile("Some path to p12/p12file_name.p12","Password_for_p12")
If (success <> True) Then
    Debug.WriteLine(cert.LastErrorText)
    Exit Sub
End If


Dim rsa As New Chilkat.Rsa
success = rsa.SetX509Cert(cert,True)
If (success <> True) Then
    Debug.WriteLine(rsa.LastErrorText)
    Exit Sub
End If


rsa.EncodingMode = "base64url"

Dim signature As String = rsa.SignStringENC(sbToken.GetAsString(),"sha256")
If (rsa.LastMethodSuccess = False) Then
    Debug.WriteLine(rsa.LastErrorText)
    Exit Sub
End If


sbToken.Append(";signature:=")
sbToken.Append(signature)

' Base64URL encode the result
sbToken.Encode("base64url","utf-8")
Dim token As String = sbToken.GetAsString()

Debug.WriteLine(token)

 

© 2000-2022 Chilkat Software, Inc. All Rights Reserved.