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) Ed25519 Sign and Verify

Demonstrates how to create an Ed25519 signature, and then to verify it.

Note: This example requires Chilkat v9.5.0.83 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 @sTmp0 nvarchar(4000)
    -- This example assumes the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    DECLARE @privKeyHex nvarchar(4000)
    SELECT @privKeyHex = '1498b5467a63dffa2dc9d9e069caf075d16fc33fdd4c3b01bfadae6433767d93'
    DECLARE @pubKeyHex nvarchar(4000)
    SELECT @pubKeyHex = 'b7a3c12dc0c8c748ab07525b701122b88bd78f600c76342d27f25e5f92444cde'

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

    -- This example shows only one way of loading an Ed25519 private key.
    -- Chilkat can load other formats (JWK, PEM, ASN.1 DER, etc.)  
    -- You may do so by calling LoadAnyFormat or LoadAnyFormatFile.
    DECLARE @success int
    EXEC sp_OAMethod @privKey, 'LoadEd25519', @success OUT, @privKeyHex, @pubKeyHex
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @privKey, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @privKey
        RETURN
      END

    -- The data to be signed...
    DECLARE @bd int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.BinData', @bd OUT

    EXEC sp_OAMethod @bd, 'AppendString', @success OUT, 'Message for Ed25519 signing', 'utf-8'

    DECLARE @eddsa int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.EdDSA', @eddsa OUT

    DECLARE @hexSig nvarchar(4000)
    EXEC sp_OAMethod @eddsa, 'SignBdENC', @hexSig OUT, @bd, 'hexlower', @privKey


    PRINT 'signature = ' + @hexSig

    -- The expected output is: 6dd355667fae4eb43c6e0ab92e870edb2de0a88cae12dbd8591507f584fe4912babff497f1b8edf9567d2483d54ddc6459bea7855281b7a246a609e3001a4e08

    -- Verify the signature..
    DECLARE @pubKey int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.PublicKey', @pubKey OUT

    EXEC sp_OAMethod @pubKey, 'LoadEd25519', @success OUT, @pubKeyHex
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @pubKey, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @privKey
        EXEC @hr = sp_OADestroy @bd
        EXEC @hr = sp_OADestroy @eddsa
        EXEC @hr = sp_OADestroy @pubKey
        RETURN
      END

    DECLARE @bVerified int
    EXEC sp_OAMethod @eddsa, 'VerifyBdENC', @bVerified OUT, @bd, @hexSig, 'hexlower', @pubKey
    IF @bVerified = 0
      BEGIN
        EXEC sp_OAGetProperty @eddsa, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0

        PRINT 'Failed to verify the signature.'
        EXEC @hr = sp_OADestroy @privKey
        EXEC @hr = sp_OADestroy @bd
        EXEC @hr = sp_OADestroy @eddsa
        EXEC @hr = sp_OADestroy @pubKey
        RETURN
      END


    PRINT 'The Ed25519 signature is verified!'

    EXEC @hr = sp_OADestroy @privKey
    EXEC @hr = sp_OADestroy @bd
    EXEC @hr = sp_OADestroy @eddsa
    EXEC @hr = sp_OADestroy @pubKey


END
GO

 

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