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

PowerBuilder 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
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

 

 

 

(PowerBuilder) Compress and Encrypt a Large File (Low and Constant Memory Footprint)

See more Compression Examples

Demonstrates how to compress and encrypt a large file such that the memory footprint remains low and constant.

Note: This example requires Chilkat v9.5.0.99 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Compress
integer li_Success
oleobject loo_Json
string ls_InPath
string ls_OutPath
string ls_InPath2
string ls_OutPath2
oleobject loo_Crypt
string ls_DecryptedPath
string ls_OutPath3

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

loo_Compress = create oleobject
// Use "Chilkat_9_5_0.Compression" for versions of Chilkat < 10.0.0
li_rc = loo_Compress.ConnectToNewObject("Chilkat.Compression")
if li_rc < 0 then
    destroy loo_Compress
    MessageBox("Error","Connecting to COM object failed")
    return
end if
loo_Compress.Algorithm = "deflate"

// Set encryption params.
// The possible values are the same as for the corresponding properties in the Chilkat Crypt2 class/object.
// The encoded IV and Key must be specified as hex.
loo_Json = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_Json.UpdateString("cryptAlgorithm","aes")
loo_Json.UpdateString("cipherMode","cbc")
loo_Json.UpdateInt("keyLength",128)
loo_Json.UpdateInt("paddingScheme",0)
loo_Json.UpdateString("encodedIV","000102030405060708090A0B0C0D0E0F")
loo_Json.UpdateString("encodedKey","000102030405060708090A0B0C0D0E0F")

// Do file-to-file compression+encryption in a single call.
ls_InPath = "qa_data/largeFile.dat"
ls_OutPath = "c:/temp/qa_output/compressed_encrypted.dat"
li_Success = loo_Compress.CompressEncryptFile(loo_Json,ls_InPath,ls_OutPath)
if li_Success = 0 then
    Write-Debug loo_Compress.LastErrorText
    destroy loo_Compress
    destroy loo_Json
    return
end if

// We can do file-to-file decrypt/decompress like this:
ls_InPath2 = ls_OutPath
ls_OutPath2 = "c:/temp/qa_output/restored.dat"
li_Success = loo_Compress.DecryptDecompressFile(loo_Json,ls_InPath2,ls_OutPath2)
if li_Success = 0 then
    Write-Debug loo_Compress.LastErrorText
    destroy loo_Compress
    destroy loo_Json
    return
end if

// Note: The above decrypt + decompress is the equivalent of doing the same in these two steps:
loo_Crypt = create oleobject
// Use "Chilkat_9_5_0.Crypt2" for versions of Chilkat < 10.0.0
li_rc = loo_Crypt.ConnectToNewObject("Chilkat.Crypt2")

loo_Crypt.CryptAlgorithm = "aes"
loo_Crypt.CipherMode = "cbc"
loo_Crypt.KeyLength = 128
loo_Crypt.PaddingScheme = 0
loo_Crypt.SetEncodedIV("000102030405060708090A0B0C0D0E0F","hex")
loo_Crypt.SetEncodedKey("000102030405060708090A0B0C0D0E0F","hex")

ls_DecryptedPath = "c:/temp/qa_output/decrypted.dat"
li_Success = loo_Crypt.CkDecryptFile(ls_InPath2,ls_DecryptedPath)
if li_Success = 0 then
    Write-Debug loo_Crypt.LastErrorText
    destroy loo_Compress
    destroy loo_Json
    destroy loo_Crypt
    return
end if

ls_OutPath3 = "c:/temp/qa_output/restored_in_two_steps.dat"
li_Success = loo_Compress.DecompressFile(ls_DecryptedPath,ls_OutPath3)
if li_Success = 0 then
    Write-Debug loo_Compress.LastErrorText
    destroy loo_Compress
    destroy loo_Json
    destroy loo_Crypt
    return
end if

Write-Debug "Success."


destroy loo_Compress
destroy loo_Json
destroy loo_Crypt

 

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