internal/functions/other/ConvertTo-SignedString.ps1
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function ConvertTo-SignedString { <# .SYNOPSIS Signs input string with the offered certificate. .DESCRIPTION Signs input string with the offered certificate. .PARAMETER Text The text to sign. .PARAMETER Certificate The certificate to sign with. The Private Key must be available. .PARAMETER Padding What RSA Signature padding to use. Defaults to Pkcs1 .PARAMETER Algorithm What algorithm to use for signing. Defaults to SHA256 .PARAMETER Encoding The encoding to use for transforming the text to bytes before signing it. Defaults to UTF8 .EXAMPLE PS C:\> ConvertTo-SignedString -Text $token Signs the specified token #> [OutputType([string])] [CmdletBinding()] param ( [Parameter(Mandatory = $true, ValueFromPipeline = $true)] [string[]] $Text, [System.Security.Cryptography.X509Certificates.X509Certificate2] $Certificate, [Security.Cryptography.RSASignaturePadding] $Padding = [Security.Cryptography.RSASignaturePadding]::Pkcs1, [Security.Cryptography.HashAlgorithmName] $Algorithm = [Security.Cryptography.HashAlgorithmName]::SHA256, [System.Text.Encoding] $Encoding = [System.Text.Encoding]::UTF8 ) begin { $privateKey = [System.Security.Cryptography.X509Certificates.RSACertificateExtensions]::GetRSAPrivateKey($Certificate) } process { foreach ($entry in $Text) { $inBytes = $Encoding.GetBytes($entry) $outBytes = $privateKey.SignData($inBytes, $Algorithm, $Padding) [convert]::ToBase64String($outBytes) } } } |