I am trying to adapt the following functions in PowerShell to PHP:
function EncryptDES
{
Param(
[String] $plainText,
[byte[]] $Key,
[byte[]] $Iv
)
$tdsAlg = New-Object System.Security.Cryptography.DESCryptoServiceProvider
$tdsAlg.Key = $Key
$tdsAlg.IV = $Iv
$encrypt = $tdsAlg.CreateEncryptor($tdsAlg.Key, $tdsAlg.IV)
$msEncrypt = New-Object System.IO.MemoryStream
$csEncrypt = New-Object System.Security.Cryptography.CryptoStream $msEncrypt, $encrypt, "Write"
$swEncrypt = New-Object System.IO.StreamWriter $csEncrypt
$swEncrypt.Write($plainText)
$swEncrypt.Close()
$csEncrypt.Close()
$msEncrypt.Close()
$encrypt.Clear()
$encrypted = $msEncrypt.ToArray()
$result = [Convert]::ToBase64String($encrypted)
return $result;
}
function DecryptDES
{
Param(
[String] $encrypted,
[byte[]] $Key,
[byte[]] $Iv
)
[byte[]]$NewStr = [System.Convert]::FromBase64String($encrypted)
$tdsAlg = New-Object System.Security.Cryptography.DESCryptoServiceProvider
$tdsAlg.Key = $Key
$tdsAlg.IV = $Iv
$encrypt = $tdsAlg.CreateDecryptor($tdsAlg.Key, $tdsAlg.IV)
$msEncrypt = New-Object System.IO.MemoryStream @(,$NewStr)
$csEncrypt = New-Object System.Security.Cryptography.CryptoStream $msEncrypt, $encrypt, "Read"
$swEncrypt = New-Object System.IO.StreamReader $csEncrypt
[String]$result = $swEncrypt.ReadToEnd()
$swEncrypt.Close()
$csEncrypt.Close()
$msEncrypt.Close()
$encrypt.Clear()
return $result;
}
I am trying to convert this code to an equivalent in PHP using the openssl_decrypt and openssl_encrpyt function, I tried with the following code but I do not get anything:
function encrypt_decrypt($action, $string) {
$output = false;
$encrypt_method = "AES-256-CBC";
$secret_key = 'This is my secret key';
$secret_iv = 'This is my secret iv';
// hash
$key = hash('sha256', $secret_key);
// iv - encrypt method AES-256-CBC expects 16 bytes - else you will get a warning
$iv = substr(hash('sha256', $secret_iv), 0, 16);
if ( $action == 'encrypt' ) {
$output = openssl_encrypt($string, $encrypt_method, $key, 0, $iv);
$output = base64_encode($output);
} else if( $action == 'decrypt' ) {
$output = openssl_decrypt(base64_decode($string), $encrypt_method, $key, 0, $iv);
}
return $output;
}
If someone could guide me, I would appreciate your help, thank you