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

Xojo Plugin 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

 

 

 

(Xojo Plugin) Aadhaar Paperless Offline e-kyc

Opens an encrypted .zip containing Aadhaar Paperless Offline e-KYC XML. Gets the XML and validates the digital signature. Then computes the hash for the mobile number and Email ID.

For more information, see https://uidai.gov.in/ecosystem/authentication-devices-documents/about-aadhaar-paperless-offline-e-kyc.html

Chilkat Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

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

// Open the .zip containing the Aadhaar Paperless Offline e-KYC XML.
// The .zip is encrypted using the "Share Phrase".
Dim zip As New Chilkat.Zip
Dim success As Boolean
success = zip.OpenZip("qa_data/xml_dsig/offline_paperless_kyc.zip")
If (success = False) Then
    System.DebugLog(zip.LastErrorText)
    Return
End If

// The .zip should contain 1 XML file.
Dim entry As Chilkat.ZipEntry
entry = zip.GetEntryByIndex(0)
If (zip.LastMethodSuccess = False) Then
    System.DebugLog(zip.LastErrorText)
    Return
End If

// To get the contents, we need to specify the Share Phrase.
Dim sharePhrase As String
sharePhrase = "Lock@487"
zip.DecryptPassword = sharePhrase

Dim bdXml As New Chilkat.BinData
// The XML file will be unzipped into the bdXml object.
success = entry.UnzipToBd(bdXml)
If (success = False) Then
    System.DebugLog(entry.LastErrorText)

    Return
End If

// First verify the XML digital signature.
Dim dsig As New Chilkat.XmlDSig
success = dsig.LoadSignatureBd(bdXml)
If (success <> True) Then
    System.DebugLog(dsig.LastErrorText)
    Return
End If

// The UIDAI XML signature does not contain the KeyInfo, so we must load the uidai certificate
// and indicate that its public key is to be used for verifying the signature.
Dim cert As New Chilkat.Cert
success = cert.LoadFromFile("qa_data/xml_dsig/uidai_auth_sign_prod_2023.cer")
If (success <> True) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

// Get the certificate's public key.
Dim pubKey As Chilkat.PublicKey
pubKey = cert.ExportPublicKey()
success = dsig.SetPublicKey(pubKey)

// The XML in this example contains only 1 signature.
Dim bVerifyReferenceDigests As Boolean
bVerifyReferenceDigests = True
Dim bVerified As Boolean
bVerified = dsig.VerifySignature(bVerifyReferenceDigests)
If (bVerified = False) Then
    System.DebugLog(dsig.LastErrorText)
    System.DebugLog("The signature was not valid.")
    Return
End If

System.DebugLog("The XML digital signature is valid.")

// Let's compute the hash for the Mobile Number.

// 	Hashing logic for Mobile Number :
// 	Sha256(Sha256(Mobile+SharePhrase))*number of times last digit of Aadhaar number
// 	(Ref ID field contains last 4 digits).
// 
// 	Example :
// 	Mobile: 1234567890
// 	Aadhaar Number:XXXX XXXX 3632
// 	Passcode : Lock@487
// 	Hash: Sha256(Sha256(1234567890Lock@487))*2
// 	In case of Aadhaar number ends with Zero we will hashed one time.

Dim crypt As New Chilkat.Crypt2
crypt.HashAlgorithm = "sha256"
crypt.EncodingMode = "hexlower"

Dim strToHash As String
strToHash = "1234567890Lock@487"
Dim bdHash As New Chilkat.BinData
success = bdHash.AppendString(strToHash,"utf-8")

// Hash a number of times equal to the last digit of your Aadhaar number.
// If the Aadhaar number ends with 0, then hash one time.
// For this example, we'll just set the number of times to hash
// for the case where an Aadhaar number ends in "9"
Dim numTimesToHash As Int32
numTimesToHash = 9
Dim i As Int32
For i = 1 To numTimesToHash
    Dim tmpStr As String
    tmpStr = crypt.HashBdENC(bdHash)
    success = bdHash.Clear()
    success = bdHash.AppendString(tmpStr,"utf-8")
Next

System.DebugLog("Computed Mobile hash = " + bdHash.GetString("utf-8"))

// Let's get the mobile hash stored in the XML and compare it with our computed hash.
Dim xml As New Chilkat.Xml
success = xml.LoadBd(bdXml,True)
Dim m_hash As String
m_hash = xml.ChilkatPath("UidData|Poi|(m)")

System.DebugLog("Stored Mobile hash   = " + m_hash)

// Now do the same thing for the email hash:

strToHash = "abc@gm.comLock@487"
success = bdHash.Clear()
success = bdHash.AppendString(strToHash,"utf-8")

For i = 1 To numTimesToHash
    Dim tmpStr As String
    tmpStr = crypt.HashBdENC(bdHash)
    success = bdHash.Clear()
    success = bdHash.AppendString(tmpStr,"utf-8")
Next

System.DebugLog("Computed Email hash = " + bdHash.GetString("utf-8"))

Dim e_hash As String
e_hash = xml.ChilkatPath("UidData|Poi|(e)")
System.DebugLog("Stored Email hash   = " + e_hash)

 

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