Chilkat Examples

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

CkPython Examples

Web API Categories

ASN.1
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Service Bus
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
ECC
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
Geolocation
Google APIs
Google Calendar
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
Microsoft Graph
NTLM
OAuth1
OAuth2
OneDrive
OpenSSL
Outlook
PEM
PFX/P12
POP3
PRNG
REST
REST Misc
RSA Encryption
SCP
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(Python) Verify JWT Using an ECC Public Key (ES256, ES384, ES512)

Demonstrates how to verify a JWT that was signed using an ECC private key.

This example verifies the ECC signature. It also does the following:

  • Checks to see if the time constraints ("nbf" and "exp") are valid.
  • Recovers the original JOSE header.
  • Recovers the original claims JSON.

Chilkat Python Downloads

Python Module for Windows, Linux, Alpine Linux,
MAC OS X, Solaris, FreeBSD, OpenBSD,
Raspberry Pi and other single board computers

import chilkat

#  Demonstrates how to verify an JWT using an ECC public key.

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

pubKey = chilkat.CkPublicKey()
success = pubKey.LoadFromFile("qa_data/pem/ecc_public.pem")

jwt = chilkat.CkJwt()

token = "eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJodHRwOi8vZXhhbXBsZS5vcmciLCJzdWIiOiJKb2huIiwiYXVkIjoiaHR0cDovL2V4YW1wbGUuY29tIiwiaWF0IjoxNDg1NzA4NzkyLCJuYmYiOjE0ODU3MDg3OTIsImV4cCI6MTQ4NTcxMjM5Mn0.wqsuyJpxJ073ox-lOiLFqG1lQocXe4hGf2XGZJRrO3qn0UusxI_bu3Gzky8gBsH4sA4u9TWZn5M-1wYMMIJk6Q"

#  First verify the signature.
sigVerified = jwt.VerifyJwtPk(token,pubKey)
print("verified: " + str(sigVerified))

#  Let's see if the time constraints, if any, are valid.
#  The above JWT was created on the afternoon of 16-May-2016, with an expiration of 1 hour.
#  If the current system time is before the "nbf" time, or after the "exp" time,
#  then IsTimeValid will return false/0.
#  Also, we'll allow a leeway of 60 seconds to account for any clock skew.
#  Note: If the token has no "nbf" or "exp" claim fields, then IsTimeValid is always true.
leeway = 60
bTimeValid = jwt.IsTimeValid(token,leeway)
print("time constraints valid: " + str(bTimeValid))

#  Now let's recover the original claims JSON (the payload).
payload = jwt.getPayload(token)
#  The payload will likely be in compact form:
print(payload)

#  We can format for human viewing by loading it into Chilkat's JSON object
#  and emit.
json = chilkat.CkJsonObject()
success = json.Load(payload)
json.put_EmitCompact(False)
print(json.emit())

#  We can recover the original JOSE header in the same way:
joseHeader = jwt.getHeader(token)
#  The payload will likely be in compact form:
print(joseHeader)

#  We can format for human viewing by loading it into Chilkat's JSON object
#  and emit.
success = json.Load(joseHeader)
json.put_EmitCompact(False)
print(json.emit())

 

© 2000-2019 Chilkat Software, Inc. All Rights Reserved.