Access ASANA via windows powershell using APIKEY - api-key

Question

I have created this following two codes in powershell to access ASANA.
But both of them dont work. I always get this error
"The remote server returned an error: (401) Unauthorized."
Any help appreciated. If you have a working C# code that can connect to any secure server with only APIKey, please post it. I could convert it to powershell code.
Code 1
Function Get-WebResponseString
{
param (
[Parameter(Mandatory=$true)]
[String]$Url,
[Parameter(Mandatory=$true)]
[String]$Method,
[Parameter(Mandatory=$false)]
[System.Net.NetworkCredential]$Credential
)
$Request = [System.Net.WebRequest]::Create($Url)
$Request.Method = $Method
$Request.ContentType = "application/x-www-form-urlencoded";
if ($Credential -ne $null)
{
$Request.Credentials = $credential
write-host "****" -foregroundcolor blue
}
$Response = $Request.GetResponse()
$StreamReader = New-Object System.IO.StreamReader $Response.GetResponseStream()
$StreamReader.ReadToEnd()
}
$Url = "https://app.asana.com/api/1.0/tasks"
$Username = "MMuthusamy#xxxxxx.xom"
$apikey="xxxxxxxxx"
$credential = New-Object System.Net.NetworkCredential #($Username, $apikey)
Get-WebResponseString -Url $Url -Credential $credential -Method "GET"
Code 2
$sha = New-Object System.Security.Cryptography.SHA1CryptoServiceProvider
$apikey="xxxxxxx"
#Add colon
$authinfo=$apikey+":";
$string1 = $authinfo
Write-Host $string1 -ForeGroundColor Green
#Encoding format
$enc = [system.Text.Encoding]::UTF8
#get bytes
$data1 = $enc.GetBytes($string1)
#Encode
$result1 = $sha.ComputeHash($data1)
#convert to 64 bit
$mykey=[System.Convert]::ToBase64String($result1)
Write-Host $mykey -ForeGroundColor Green
$url = "https://app.asana.com/api/1.0/tasks"
$url="https://app.asana.com/api/1.0/users"
$request = [System.Net.WebRequest]::Create($url)
$authorization = "Authorization: Basic " + $myKey
Write-Host $authorization -ForeGroundColor Green
$request.Headers.Add($authorization)
#$request.Headers.Add("Authorization: BASIC $mykey")
$response = $request.GetResponse()
Write-Host $Response -ForeGroundColor Green

Answer 1

(I work at Asana)
The 401 header is a clue that the problem lies somewhere in your authorization header.
The HTTP Basic Auth spec does not call for a SHA1 hash of the username:password. It's just straight base64 encoding of that string. Try passing $authinfo to your call to ToBase64String instead of hashed data.