Uipath text Encryption

mnkyboii · November 16, 2020, 8:21am

Hi,

I am trying to use the encrypt activity for encrypt a text, I do notices we have few encryption mechanism that we could use.

I am trying to use to the AES encryption mechanism. But as you are aware there are multiple “types” of encryption mechanism of AES such as AES-128 or AES 256.

so anyone has any idea which type of AES is being used here?

also how can i use only AES 256 to encrypt my text

thanks

Yoichi · November 16, 2020, 9:21am

Hi,

The following is a part of source code of UiPath.Cryptgraphy activity

github.com

UiPath/Community.Activities/blob/master/Activities/Cryptography/UiPath.Cryptography/CryptographyHelper.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using UiPath.Cryptography.Properties;

namespace UiPath.Cryptography
{
    public static class CryptographyHelper
    {
        private static readonly RandomNumberGenerator _rng = RandomNumberGenerator.Create();
        private const int PBKDF2_SaltSizeBytes = 8; // Value recommended in literature (64 bit key).
        private const int PBKDF2_Iterations = 10000; // Value recommended in literature.

        public static byte[] HashData(HashAlgorithms hashAlgorithm, byte[] inputBytes)
        {
            byte[] result;

            using (HashAlgorithm algorithm = GetHashAlgorithm(hashAlgorithm))

This file has been truncated. show original

This code shows key size will be used max legal key size.

In .net 4.6.1, max legal key size for AES is 256 bit as the following document.
So probably that activity uses AES256.

Regards,

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Uipath text Encryption

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