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Powershell HMAC SHA 256 Example
# Powershell HMAC SHA 256
$message = 'Message'
$secret = 'secret'
$hmacsha = New-Object System.Security.Cryptography.HMACSHA256
$hmacsha.key = [Text.Encoding]::ASCII.GetBytes($secret)
$signature = $hmacsha.ComputeHash([Text.Encoding]::ASCII.GetBytes($message))
$signature = [Convert]::ToBase64String($signature)
echo $signature
# Do we get the expected signature?
echo ($signature -eq 'qnR8UCqJggD55PohusaBNviGoOJ67HC6Btry4qXLVZc=')
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