Private/Convert-HexToByteArray.ps1
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Function Convert-HexToByteArray { <# .SYNOPSIS Converts a hex string into its bytes representation .DESCRIPTION Apteco PS Modules - Transform hexadecimal string into bytes So e.g. if you have a hexadecimal string like $str = "48656c6c6f20576f726c64" and call $bytes = Convert-HexToByteArray -HexString $str you get the byte representation like 72 101 108 108 111 32 87 111 114 108 100 which can be converted back into string like [System.Text.Encoding]::Default.GetString($bytes) which then results into Hello World .PARAMETER HexString Hexadecimal string .EXAMPLE Convert-HexToByteArray -HexString "48656c6c6f20576f726c64" .INPUTS String .OUTPUTS Byte[] .NOTES Author: florian.von.bracht@apteco.de #> [cmdletbinding()] param( [parameter(Mandatory=$true)][String]$HexString ) Process { $Bytes = [Byte[]]::new($HexString.Length / 2) For($i=0; $i -lt $HexString.Length; $i+=2){ $Bytes[$i/2] = [System.Convert]::ToByte($HexString.Substring($i, 2), 16) } # Return $Bytes } } |