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June 24, 2020 14:56
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Compute AWS SES SMTP password using powershell (could be integrated in CloudFormation template)
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$key = "${SecretAccessKey}"; | |
$region = "${AWS::Region}"; | |
$date = "11111111"; | |
$service = "ses"; | |
$terminal = "aws4_request"; | |
$message = "SendRawEmail"; | |
$versionInBytes = 0x04; | |
function HmacSha256($text, $key2) { | |
$hmacsha = New-Object System.Security.Cryptography.HMACSHA256 | |
$hmacsha.key = $key2; | |
$hmacsha.ComputeHash([Text.Encoding]::UTF8.GetBytes($text)); | |
} | |
$signature = [Text.Encoding]::UTF8.GetBytes("AWS4" + $key) | |
$signature = HmacSha256 "$date" $signature; | |
$signature = HmacSha256 "$region" $signature; | |
$signature = HmacSha256 "$service" $signature; | |
$signature = HmacSha256 "$terminal" $signature; | |
$signature = HmacSha256 "$message" $signature; | |
$signatureAndVersion = [System.Byte[]]::CreateInstance([System.Byte], $signature.Length + 1); | |
$signatureAndVersion[0] = $versionInBytes; | |
$signature.CopyTo($signatureAndVersion, 1); | |
$smtpPassword = [Convert]::ToBase64String($signatureAndVersion); | |
Write-Host $smtpPassword; | |
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