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(Excel) HTTP Basic Auth with Secure Strings

Demonstrates how to do HTTP basic authentication using secure strings.

This example requires Chilkat v9.5.0.71 or greater.

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

'  Imagine we've previously saved our encrypted login and password within a JSON config file
'  that contains this:

'  {
'    "http_login": "mCrOmA7mBA7Au9RuJGb9hw==",
'    "http_password": "jJtiI9TgErTTpqBz9JtHBw=="
'  }

Dim json As Chilkat.JsonObject
Set json = Chilkat.NewJsonObject
success = json.LoadFile("qa_data/passwords/http.json")

Dim crypt As Chilkat.Crypt2
Set crypt = Chilkat.NewCrypt2

'  These are the encryption settings we previously used to encrypt the credentials within the JSON config file.
crypt.CryptAlgorithm = "aes"
crypt.CipherMode = "cbc"
crypt.KeyLength = 128
crypt.SetEncodedKey "000102030405060708090A0B0C0D0E0F","hex"
crypt.SetEncodedIV "000102030405060708090A0B0C0D0E0F","hex"
crypt.EncodingMode = "base64"

Dim ssLogin As Chilkat.SecureString
Set ssLogin = Chilkat.NewSecureString
Dim ssPassword As Chilkat.SecureString
Set ssPassword = Chilkat.NewSecureString

'  Decrypt to the secure string.  (the strings will still held in memory encrypted, but are now encrypted using
'  a randomly generated session key.)
success = crypt.DecryptSecureENC(json.StringOf("http_login"),ssLogin)
success = crypt.DecryptSecureENC(json.StringOf("http_password"),ssPassword)

Dim http As Chilkat.Http
Set http = Chilkat.NewHttp

'  Cause the "Authorization: Basic ..." header to be added to HTTP requests
'  by setting the Login and Password properties.  However, instead of setting the password property
'  directly, set it via the SetPassword method using the secure string.
http.Login = ssLogin.Access()
success = http.SetPassword(ssPassword)

'  Also indicate that Basic authentication is to be used..
http.BasicAuth = True

'  Do an HTTP GET w/ Basic authentication.
'  REMEMBER: Always use TLS with Basic authentication.  Otherwise your credentials are exposed for the world to see..


responseStr = http.QuickGetStr("https://www.chilkatsoft.com/helloWorld.html")

'  Show the request header we sent in the QuickGetStr:
Debug.Print http.LastHeader

'  The LastHeader looks something like this:

'  GET /helloWorld.html HTTP/1.1
'  Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
'  Connection: keep-alive
'  User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0
'  Accept-Language: en-us,en;q=0.5
'  Authorization: Basic bXlIdHRwTG9naW46bXlIdHRwUGFzc3dvcmQ=
'  Accept-Encoding: gzip
'  Host: www.chilkatsoft.com

 

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