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
Azure Cloud Storage
Azure Key Vault
Azure Service Bus
Azure Table Service
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Cloud Signature CSC
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
uncategorized

 

 

 

(SQL Server) JWE with DEFLATE Compression

Demonstrates how to DEFLATE ("zip") compress the JWE payload prior to encryption.

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
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    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

    -- Create some plaintext to be encrypted.
    -- This example will demonstrate with and without DEFLATE (zip) compression.
    DECLARE @sbPlainText int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbPlainText OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @bCrLf int
    SELECT @bCrLf = 1
    DECLARE @line nvarchar(4000)
    SELECT @line = 'Live long and prosper.'
    EXEC sp_OAMethod @sbPlainText, 'AppendLine', @success OUT, @line, @bCrLf
    EXEC sp_OAMethod @sbPlainText, 'AppendLine', @success OUT, @line, @bCrLf
    EXEC sp_OAMethod @sbPlainText, 'AppendLine', @success OUT, @line, @bCrLf
    EXEC sp_OAMethod @sbPlainText, 'AppendLine', @success OUT, @line, @bCrLf

    -- The text to be encrypted:
    EXEC sp_OAMethod @sbPlainText, 'GetAsString', @sTmp0 OUT
    PRINT @sTmp0

    DECLARE @jwe int
    -- Use "Chilkat_9_5_0.Jwe" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Jwe', @jwe OUT

    -- Build the JWE Protected Header: {"alg":"A128KW","enc":"A128CBC-HS256","zip":"DEF"}
    -- The "zip":"DEF" parameter indicates that the plaintext payload should
    -- be compressed prior to encryption.
    DECLARE @jweProtHdr int
    -- Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @jweProtHdr OUT

    EXEC sp_OAMethod @jweProtHdr, 'AppendString', @success OUT, 'alg', 'A128KW'
    EXEC sp_OAMethod @jweProtHdr, 'AppendString', @success OUT, 'enc', 'A128CBC-HS256'
    EXEC sp_OAMethod @jweProtHdr, 'AppendString', @success OUT, 'zip', 'DEF'
    EXEC sp_OAMethod @jwe, 'SetProtectedHeader', @success OUT, @jweProtHdr

    -- Set the AES key wrap key:
    DECLARE @aesWrappingKey nvarchar(4000)
    SELECT @aesWrappingKey = 'GawgguFyGrWKav7AX4VKUg'
    EXEC sp_OAMethod @jwe, 'SetWrappingKey', @success OUT, 0, @aesWrappingKey, 'base64url'

    -- Encrypt and return the JWE in sbJweCompressed:
    DECLARE @sbJweCompressed int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbJweCompressed OUT

    EXEC sp_OAMethod @jwe, 'EncryptSb', @success OUT, @sbPlainText, 'utf-8', @sbJweCompressed
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @jwe, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sbPlainText
        EXEC @hr = sp_OADestroy @jwe
        EXEC @hr = sp_OADestroy @jweProtHdr
        EXEC @hr = sp_OADestroy @sbJweCompressed
        RETURN
      END

    -- Show the compressed JWE:
    EXEC sp_OAMethod @sbJweCompressed, 'GetAsString', @sTmp0 OUT
    PRINT @sTmp0

    EXEC sp_OAGetProperty @sbJweCompressed, 'Length', @iTmp0 OUT
    PRINT 'size of compressed JWE: ' + @iTmp0

    -- Now create a JWE without compression.
    EXEC sp_OAMethod @jweProtHdr, 'Delete', @success OUT, 'zip'
    -- Make sure to update the shared protected header:
    EXEC sp_OAMethod @jwe, 'SetProtectedHeader', @success OUT, @jweProtHdr

    DECLARE @sbJweUncompressed int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbJweUncompressed OUT

    EXEC sp_OAMethod @jwe, 'EncryptSb', @success OUT, @sbPlainText, 'utf-8', @sbJweUncompressed
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @jwe, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sbPlainText
        EXEC @hr = sp_OADestroy @jwe
        EXEC @hr = sp_OADestroy @jweProtHdr
        EXEC @hr = sp_OADestroy @sbJweCompressed
        EXEC @hr = sp_OADestroy @sbJweUncompressed
        RETURN
      END

    -- Show the uncompressed JWE:
    EXEC sp_OAMethod @sbJweUncompressed, 'GetAsString', @sTmp0 OUT
    PRINT @sTmp0

    EXEC sp_OAGetProperty @sbJweUncompressed, 'Length', @iTmp0 OUT
    PRINT 'size of uncompressed JWE: ' + @iTmp0

    -- Decrypting is the same whether compression is used or not.
    -- The "zip" header in the JWE indicates that the payload should be 
    -- automatically decompressed (inflated) after decrypting.
    DECLARE @jwe2 int
    -- Use "Chilkat_9_5_0.Jwe" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Jwe', @jwe2 OUT

    EXEC sp_OAMethod @jwe2, 'LoadJweSb', @success OUT, @sbJweCompressed
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @jwe2, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sbPlainText
        EXEC @hr = sp_OADestroy @jwe
        EXEC @hr = sp_OADestroy @jweProtHdr
        EXEC @hr = sp_OADestroy @sbJweCompressed
        EXEC @hr = sp_OADestroy @sbJweUncompressed
        EXEC @hr = sp_OADestroy @jwe2
        RETURN
      END
    -- Set the AES wrap key.
    EXEC sp_OAMethod @jwe2, 'SetWrappingKey', @success OUT, 0, @aesWrappingKey, 'base64url'

    -- Decrypt (also automatically decompresses).
    DECLARE @sbOriginalText int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbOriginalText OUT

    EXEC sp_OAMethod @jwe2, 'DecryptSb', @success OUT, 0, 'utf-8', @sbOriginalText
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @jwe2, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sbPlainText
        EXEC @hr = sp_OADestroy @jwe
        EXEC @hr = sp_OADestroy @jweProtHdr
        EXEC @hr = sp_OADestroy @sbJweCompressed
        EXEC @hr = sp_OADestroy @sbJweUncompressed
        EXEC @hr = sp_OADestroy @jwe2
        EXEC @hr = sp_OADestroy @sbOriginalText
        RETURN
      END


    PRINT 'original text from compressed JWE: '
    EXEC sp_OAMethod @sbOriginalText, 'GetAsString', @sTmp0 OUT
    PRINT @sTmp0

    -- -----------------------------------------------------------
    -- Do the same with the uncompressed JWE

    EXEC sp_OAMethod @jwe2, 'LoadJweSb', @success OUT, @sbJweUncompressed
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @jwe2, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sbPlainText
        EXEC @hr = sp_OADestroy @jwe
        EXEC @hr = sp_OADestroy @jweProtHdr
        EXEC @hr = sp_OADestroy @sbJweCompressed
        EXEC @hr = sp_OADestroy @sbJweUncompressed
        EXEC @hr = sp_OADestroy @jwe2
        EXEC @hr = sp_OADestroy @sbOriginalText
        RETURN
      END
    -- Set the AES wrap key.
    EXEC sp_OAMethod @jwe2, 'SetWrappingKey', @success OUT, 0, @aesWrappingKey, 'base64url'

    -- Decrypt.
    EXEC sp_OAMethod @sbOriginalText, 'Clear', NULL
    EXEC sp_OAMethod @jwe2, 'DecryptSb', @success OUT, 0, 'utf-8', @sbOriginalText
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @jwe2, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sbPlainText
        EXEC @hr = sp_OADestroy @jwe
        EXEC @hr = sp_OADestroy @jweProtHdr
        EXEC @hr = sp_OADestroy @sbJweCompressed
        EXEC @hr = sp_OADestroy @sbJweUncompressed
        EXEC @hr = sp_OADestroy @jwe2
        EXEC @hr = sp_OADestroy @sbOriginalText
        RETURN
      END


    PRINT 'original text from uncompressed JWE: '
    EXEC sp_OAMethod @sbOriginalText, 'GetAsString', @sTmp0 OUT
    PRINT @sTmp0

    -- ------------------------------------------------
    -- The output of this example is:
    -- (Note: Your output data will be different because the content encryption key is randomly generated.)

    -- eyJhbGciOiJBMTI4S1ciLCJlbmMiOiJBMTI4Q0JDLUhTMjU2IiwiemlwIjoiREVGIn0.xuW-pEAIdEUFnk10m8ocursvktO8Of9ByCCAt6LgKkkOtCWCUn1kQw.zpGj-9WVni3cQxyOuZbcGA.0hzP1myua3oYpUHwCIY_3edBUREbUpLaX6wYuJduOdI.Ppc6aEO3y3B8BJ1FKMPjlA
    -- size of compressed JWE: 212
    -- eyJhbGciOiJBMTI4S1ciLCJlbmMiOiJBMTI4Q0JDLUhTMjU2In0.N4KeyC7nnSFkieJOyE24_zKeuV_m7v5UKoJb1TgV4Yc_r2RzUPNvyA.6AEdyXSCKx-iMmUJyypSLg.QpixfyrwhGpmwUDp623viik4smPav7vwPLiC2r-V-jwnSfEH3mxWu6DbrIz3mixaqATwynmEBzVPxvS9jTXpSAGCnniib4_0WoPl3r_wF5tlsKOEe--jpNso-DKd1Tp8jJxj3JkFWt3IRnUUKGj17g.sBfDwFc5fzpaI-UW8-SW4g
    -- size of uncompressed JWE: 303
    -- original text from compressed JWE: 
    -- Live long and prosper.
    -- Live long and prosper.
    -- Live long and prosper.
    -- Live long and prosper.
    -- 
    -- original text from uncompressed JWE: 
    -- Live long and prosper.
    -- Live long and prosper.
    -- Live long and prosper.
    -- Live long and prosper.
    -- 

    EXEC @hr = sp_OADestroy @sbPlainText
    EXEC @hr = sp_OADestroy @jwe
    EXEC @hr = sp_OADestroy @jweProtHdr
    EXEC @hr = sp_OADestroy @sbJweCompressed
    EXEC @hr = sp_OADestroy @sbJweUncompressed
    EXEC @hr = sp_OADestroy @jwe2
    EXEC @hr = sp_OADestroy @sbOriginalText


END
GO

 

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