Bug 18482 - RSA - Import Public Key Bug
Summary: RSA - Import Public Key Bug
Status: IN_PROGRESS
Alias: None
Product: Class Libraries
Classification: Mono
Component: System.Security ()
Version: unspecified
Hardware: PC Windows
: --- normal
Target Milestone: Untriaged
Assignee: Sebastien Pouliot
URL:
Depends on:
Blocks:
 
Reported: 2014-03-19 20:32 UTC by Craig
Modified: 2014-07-09 23:21 UTC (History)
3 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:

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Status:
IN_PROGRESS

Description Craig 2014-03-19 20:32:14 UTC
This code is broken on Xamarin Android:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Cryptography;

namespace Vectren.Mobile.Shared
{
    public class RsaCipherUtil
    {
        public string Encrypt(string value)
        {
            using (var rsa = new RSACryptoServiceProvider())
            {
                rsa.PersistKeyInCsp = false;
                var param = rsa.ExportParameters(false);
                param.Modulus = Convert.FromBase64String("kGpIwe0ldtQHjp8BEveMlavqS9BC8OevECam3jpuR6xiKZX7IvI+uaPz8ptTrzUZ2nUpv1IihsKZGEGRuYHSVMypnGyjzY7+44rwHhgTlEFQATAXSAL/Zfn5MZ70Bd5JRd3WUA+eh5zS6hcXewWOcM1v2YFDyhbH4SVU5oV53r3mNleFwgTY/g05BSuVGIhHwntKGdCNoTP1tOmACFCyJnupKf+AgPh6/pDsF2yYoltVTEYjHU8oRxHU+spZQpbeM3K+bXFjZONroV1jJJXda9x/95go4vTvVp5suCDmxAxZejpFTLq0/EiT50vVTzFMl7oEw3EZ3rbTbtu11iUzzw==");
                param.Exponent = Convert.FromBase64String("AQAB");
                param.D = null;
                param.DP = null;
                param.DQ = null;
                param.InverseQ = null;
                param.P = null;
                param.Q = null;
                rsa.ImportParameters(param);

                byte[] result = rsa.Encrypt(Encoding.UTF8.GetBytes(value), false);
                return Convert.ToBase64String(result);
            }
        }
    }
}
Comment 2 marcos.henrich 2014-05-29 13:45:38 UTC
Hi Craig,

Thanks for the detailed bug report.
A pull request for this issue can be found in the link below.
https://github.com/mono/mono/pull/1063