Convert a string to a byte array in PowerShell version 2
You most likely just need to convert your hash to base64 after the last line.
$enc = [system.Text.Encoding]::UTF8$string1 = "This is a string to hash" $data1 = $enc.GetBytes($string1) # Create a New SHA1 Crypto Provider $sha = New-Object System.Security.Cryptography.SHA1CryptoServiceProvider # Now hash and display results $result1 = $sha.ComputeHash($data1)[System.Convert]::ToBase64String($result1)Text->Bytes->Encrypt/Hash->Base64
That's a very common pattern for sending cryptographic data in a text format.
It looks like you're on the right track. You have to pick a character encoding to convert between a string and a byte array. You picked UTF-8 above, but there are other options (e.g. ASCII, UTF-16, etc.).
Encrypting a string directly is not supported.
The problem seems to be that in first bytearray, you are have signed bytes (-86 = 10101010) and in the second one unsigned bytes (170 = 10101010).