CandyJun.Rsa

A .NET Core RSA extensions.

• 1.Extensions of RSA
• 2.Converter for RSA key
• 3.Compatible with Java

Thanks for bcgit's bc-csharp

Install

Install-Package CandyJun.Rsa

Demo

Generat a pair of key

var generator = new RsaKeyPairGenerator();
var secureRandom = new SecureRandom();
generator.Init(new KeyGenerationParameters(secureRandom, 2048));
var pair = generator.GenerateKeyPair();
string privatePemKey;
using (var twPrivate = new StringWriter())
{
    var pwPrivate = new PemWriter(twPrivate);
    pwPrivate.WriteObject(pair.Private);
    pwPrivate.Writer.Flush();
    privatePemKey = twPrivate.ToString();
    Console.WriteLine("Private Key：" + privatePemKey);
}
string publicKey;
using (var twPublic = new StringWriter())
{
    PemWriter pwPublic = new PemWriter(twPublic);
    pwPublic.WriteObject(pair.Public);
    pwPublic.Writer.Flush();
    publicKey = twPublic.ToString();
    Console.WriteLine("Public Key：" + publicKey);
}

Encrypt and sign

var provider = RSA.Create();
//load cert from private key by pem format 
provider.FromPemPrivateKeyString(privatePemKey);
var str = "test";
//encrypt with enum params: rsa/pkcs7
var encStr = provider.Encrypt(str, CipherMode.NONE, CipherPadding.PKCS7);
//sian with md5
var signStr = provider.SignData(encStr, HashAlgorithm.MD5);

Decrypt and verify

var provider2 = RSA.Create();
//load cert from xml, witch convert from another provider export
provider2.FromXmlStringCore(provider.ToXmlStringCore(true));
var verifyResult = provider2.VerifyData(encStr, "MD5WITHRSA", signStr);
//decrypt with string params
var sourceStr = provider2.Decrypt(encStr, "RSA//PKCS7PADDING");

Reference component

bc-csharp - bcgit

Change Log

v1.0.0

Features

• Add project

v1.0.1

Features

• Add enum params