Signature/RS.psm1
|
Import-Module BAMCIS.Crypto Function Get-SignatureRS { param ( [Parameter(Mandatory = $True)] [string] $Algorithm, [Parameter(Mandatory = $True)] [System.Byte[]] $SecretKey, [Parameter(Mandatory = $True)] [string] $ToBeSigned ) $SigningAlgorithm = switch ($Algorithm) { "RS256" {[Security.Cryptography.HashAlgorithmName]::SHA256} "RS384" {[Security.Cryptography.HashAlgorithmName]::SHA384} "RS512" {[Security.Cryptography.HashAlgorithmName]::SHA512} Default {Write-Error 'Unsupported algorithm: ' + $Algorithm} } $rsa = ConvertFrom-PEM -PEM ([System.Text.Encoding]::UTF8.GetString($SecretKey)) $Signature = [Convert]::ToBase64String( $rsa.SignData( [System.Text.Encoding]::UTF8.GetBytes($ToBeSigned), $SigningAlgorithm, [Security.Cryptography.RSASignaturePadding]::Pkcs1 ) ).Split('=')[0].Replace('+', '-').Replace('/', '_') $Signature } |