Chilkat Examples

ChilkatHOME.NET Core C#Android™AutoItCC#C++Chilkat2-PythonCkPythonClassic ASPDataFlexDelphi ActiveXDelphi DLLGoJavaLianjaMono C#Node.jsObjective-CPHP ActiveXPHP ExtensionPerlPowerBuilderPowerShellPureBasicRubySQL ServerSwift 2Swift 3,4,5...TclUnicode CUnicode C++VB.NETVBScriptVisual Basic 6.0Visual FoxProXojo Plugin

SQL Server Examples

Web API Categories

ASN.1
AWS KMS
AWS Misc
Amazon EC2
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Key Vault
Azure Service Bus
Azure Table Service
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Code Signing
Compression
DKIM / DomainKey
DNS
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
Misc
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
SharePoint Online
Signing in the Cloud
Socket/SSL/TLS
Spider
Stream
Tar Archive
ULID/UUID
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(SQL Server) JWE using "dir" Direct use of Shared Symmetric Key

Demonstrates how to create a JWE using the "dir" alg -- which is to directly use a shared symmetric key.

Note: This example requires Chilkat v9.5.0.66 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

// Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
//
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    -- This requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    -- Note: This example requires Chilkat v9.5.0.66 or greater.

    DECLARE @success int

    DECLARE @plaintext nvarchar(4000)
    SELECT @plaintext = 'Live long and prosper.'

    DECLARE @jwe int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.Jwe', @jwe OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- First build the JWE Protected Header..
    DECLARE @jweProtHdr int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.JsonObject', @jweProtHdr OUT

    EXEC sp_OAMethod @jweProtHdr, 'AppendString', @success OUT, 'alg', 'dir'
    EXEC sp_OAMethod @jweProtHdr, 'AppendString', @success OUT, 'enc', 'A128GCM'

    -- Don't forget to actually provide the protected header to the JWE object:
    EXEC sp_OAMethod @jwe, 'SetProtectedHeader', @success OUT, @jweProtHdr

    -- The JWE is to use 128-bit AES GCM encryption as specified by the "enc" parameter.
    -- Given that the "alg" = "dir", we are to directly specify the AES GCM key.
    -- (It is assumed that the decrypting side also has knowledge of the direct key to be used..)

    -- Our key will be these 16 hex bytes: 000102030405060708090A0B0C0D0E0F

    -- The SetWrappingKey method is also used for "dir" direct keys.
    -- However, if there are multiple recipients, they must all share the same CEK (Content Encryption Key),
    -- which is specified by calling SetWrappingKey with an index of 0.

    DECLARE @recipientIndex int
    SELECT @recipientIndex = 0
    EXEC sp_OAMethod @jwe, 'SetWrappingKey', @success OUT, @recipientIndex, '000102030405060708090A0B0C0D0E0F', 'hex'

    -- Encrypt and return the JWE:
    DECLARE @strJwe nvarchar(4000)
    EXEC sp_OAMethod @jwe, 'Encrypt', @strJwe OUT, @plaintext, 'utf-8'
    EXEC sp_OAGetProperty @jwe, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @jwe, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @jwe
        EXEC @hr = sp_OADestroy @jweProtHdr
        RETURN
      END

    -- Show the JWE we just created:

    PRINT @strJwe

    -- Decrypt the JWE.
    DECLARE @jwe2 int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.Jwe', @jwe2 OUT

    EXEC sp_OAMethod @jwe2, 'LoadJwe', @success OUT, @strJwe
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @jwe2, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @jwe
        EXEC @hr = sp_OADestroy @jweProtHdr
        EXEC @hr = sp_OADestroy @jwe2
        RETURN
      END
    EXEC sp_OAMethod @jwe2, 'SetWrappingKey', @success OUT, 0, '000102030405060708090A0B0C0D0E0F', 'hex'

    -- Decrypt.
    DECLARE @originalPlaintext nvarchar(4000)
    EXEC sp_OAMethod @jwe2, 'Decrypt', @originalPlaintext OUT, 0, 'utf-8'
    EXEC sp_OAGetProperty @jwe2, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @jwe2, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @jwe
        EXEC @hr = sp_OADestroy @jweProtHdr
        EXEC @hr = sp_OADestroy @jwe2
        RETURN
      END


    PRINT 'original text: '

    PRINT @originalPlaintext

    -- Sample output:
    -- eyJhbGciOiJkaXIiLCJlbmMiOiJBMTI4R0NNIn0..20HX5Huc7f1nQC4pBUtiCQ.axFZIxtZy5j0ifJQUzGXLKIpsBuxJA.eBrOC-NrsreN6JeGuOPk1g
    -- original text: 
    -- Live long and prosper.

    EXEC @hr = sp_OADestroy @jwe
    EXEC @hr = sp_OADestroy @jweProtHdr
    EXEC @hr = sp_OADestroy @jwe2


END
GO

 

© 2000-2024 Chilkat Software, Inc. All Rights Reserved.