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

Visual Basic 6.0 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

 

 

 

(Visual Basic 6.0) RSA Hash Binary Data and Sign (and Verify)

Demonstrates how to sign the hash of binary data. Also demonstrates how to verify the RSA signature.

Note: This example uses methods introduced in Chilkat v9.5.0.77.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

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

' Load an RSA private key for signing.
Dim privKey As New PrivateKey
Dim success As Long
success = privKey.LoadEncryptedPemFile("qa_data/pem/rsa_passwd.pem","passwd")
If (success <> 1) Then
    Debug.Print privKey.LastErrorText
    Exit Sub
End If

Dim rsa As New ChilkatRsa
success = rsa.ImportPrivateKeyObj(privKey)

' We have some binary data (in hex) to sign
Dim originalData As String
originalData = "0102030405060708090A"
Dim bdData As New ChilkatBinData
success = bdData.AppendEncoded(originalData,"hex")

' Hash (SHA-256) and sign the hash:
Dim bdSignature As New ChilkatBinData
success = rsa.SignBd(bdData,"sha256",bdSignature)
If (success <> 1) Then
    Debug.Print rsa.LastErrorText
    Exit Sub
End If

' Show the RSA signature in base64
Debug.Print bdSignature.GetEncoded("base64")

' ------------------------------------------
' Get the public key from the private key
Dim pubKey As PublicKey
Set pubKey = privKey.GetPublicKey()

' Verify the signature..
Dim rsa2 As New ChilkatRsa
success = rsa2.ImportPublicKeyObj(pubKey)

Dim bVerified As Long
bVerified = rsa2.VerifyBd(bdData,"sha256",bdSignature)
Debug.Print "signature verified: " & bVerified


 

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