public static string RsaEncryptWithPrivate(string clearText)
{
var mod = new BigInteger(Mod, 16);
var pubExp = new BigInteger(PubExponent, 16);
var bytesToEncrypt = Encoding.UTF8.GetBytes(clearText);
var pubParameters = new RsaKeyParameters(false, mod, pubExp);
var encryptEngine = new Pkcs1Encoding(new RsaEngine());
encryptEngine.Init(true, pubParameters);
var encrypted = Convert.ToBase64String(encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length));
return(encrypted);
}
public string RsaDecryptWithPublic(string base64Input, string publicKey)
{
var bytesToDecrypt = Convert.FromBase64String(base64Input);
var decryptEngine = new Pkcs1Encoding(new RsaEngine());
using (var txtreader = new StringReader(publicKey))
{
var keyParameter = (AsymmetricKeyParameter) new PemReader(txtreader).ReadObject();
decryptEngine.Init(false, keyParameter);
}
var decrypted = Encoding.UTF8.GetString(decryptEngine.ProcessBlock(bytesToDecrypt, 0, bytesToDecrypt.Length));
return(decrypted);
}
public static bool EncryptBuffer(this AsymmetricKeyParameter PublicKey, byte[] aClearData, out string strHexedEncrypted)
{
strHexedEncrypted = null;
try
{
var encryptEngine = new Pkcs1Encoding(new RsaEngine());
encryptEngine.Init(true, PublicKey);
strHexedEncrypted = encryptEngine.ProcessBlock(aClearData, 0, aClearData.Length).ToHexString();
return(strHexedEncrypted.Length > 0);
}
catch (Exception e) { e.CatchMessage().TraceError("EncryptBuffer(): "); }
return(false);
}
public string RsaEncryptWithPublic(string clearText, string publicKey)
{
var bytesToEncrypt = Encoding.UTF8.GetBytes(clearText);
var encryptEngine = new Pkcs1Encoding(new RsaEngine());
using (var txtreader = new StringReader(publicKey))
{
var keyParameter = (AsymmetricKeyParameter) new PemReader(txtreader).ReadObject();
encryptEngine.Init(true, keyParameter);
}
var encrypted = Convert.ToBase64String(encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length));
return(encrypted);
}
public DecryptMiddleware(RequestDelegate next, IConfiguration configuration)
{
this.next = next;
using TextReader reader = new StringReader(configuration.GetPivateKey());
PemObject pemObject = new PemReader(reader).ReadPemObject();
AsymmetricKeyParameter pkey = PrivateKeyFactory.CreateKey(pemObject.Content);
this.pkcs1Encoding = new Pkcs1Encoding(new RsaEngine());
pkcs1Encoding.Init(false, pkey);
var assembly = Assembly.GetExecutingAssembly();
Type[] types = assembly.GetTypes();
Type[] apicontrollers = types.Where(type => type.GetCustomAttribute <ApiControllerAttribute>() != null).ToArray();
foreach (Type ctrl in apicontrollers)
{
MethodInfo[] controllerMethods = ctrl.GetMethods();
RouteAttribute apiRoute = ctrl.GetCustomAttribute <RouteAttribute>();
if (apiRoute == null)
{
throw new Exception($"{ctrl.Name} doesn't have a \"Route\" Attribute");
}
string ctrRoute = apiRoute.Template;
foreach (MethodInfo meth in controllerMethods)
{
EncryptAttribute encryptAttribute = meth.GetCustomAttribute <EncryptAttribute>();
if (encryptAttribute != null)
{
string route;
HttpPostAttribute post = meth.GetCustomAttribute <HttpPostAttribute>();
if (post != null)
{
route = post.Template;
}
else
{
throw new Exception("Api Mehtod Be Encrypted Http Method Must Be POST ");
}
string key = "/" + ctrRoute + "/" + route;
if (this.ApiMap.ContainsKey(key))
{
throw new Exception("Api Method Route Repeat Exception！");
}
this.ApiMap.Add(key, encryptAttribute);
}
}
}
}
private static string RsaEncrypt(string plainText, string key)
{
var bytesToEncrypt = Encoding.Unicode.GetBytes(plainText);
var encryptEngine = new Pkcs1Encoding(new RsaEngine());
using (var txtreader = new StringReader(key))
{
var keyParameter = (AsymmetricKeyParameter) new PemReader(txtreader).ReadObject();
encryptEngine.Init(true, keyParameter);
}
var encrypted = Convert.ToBase64String(encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length));
return(encrypted);
}
public static string DekriptirajTekst(string kriptiraniTekst, string privatniKljuc)
{
var bytesToDecrypt = Convert.FromBase64String(kriptiraniTekst);
var decryptEngine = new Pkcs1Encoding(new RsaEngine());
using (var txtreader = new StringReader(privatniKljuc))
{
var keyPair = (AsymmetricCipherKeyPair) new PemReader(txtreader).ReadObject();
decryptEngine.Init(false, keyPair.Private);
}
var decrypted = Encoding.UTF8.GetString(decryptEngine.ProcessBlock(bytesToDecrypt, 0, bytesToDecrypt.Length));
return(decrypted);
}
public byte[] RsaDecryptWithPrivate(byte[] bytesToDecrypt, string privateKey)
{
AsymmetricCipherKeyPair keyPair;
var decryptEngine = new Pkcs1Encoding(new RsaEngine());
using (var txtreader = new StringReader(privateKey))
{
keyPair = (AsymmetricCipherKeyPair) new PemReader(txtreader).ReadObject();
decryptEngine.Init(false, keyPair.Private);
}
return(decryptEngine.ProcessBlock(bytesToDecrypt, 0, bytesToDecrypt.Length));
}
public static byte[] DecryptPKCS1ByRSASk(byte[] data, AsymmetricKeyParameter sk)
{
byte[] result = null;
IAsymmetricBlockCipher cipher = new Pkcs1Encoding(new RsaEngine());
cipher.Init(false, sk);
try{
result = cipher.ProcessBlock(data, 0, data.Length);
}
catch (InvalidCipherTextException e) {
System.Diagnostics.Debug.WriteLine(e.Message);
result = null;
}
return(result);
}
/// <summary>
/// 私钥加密
/// </summary>
/// <param name="pContent">要加密的内容</param>
/// <param name="pPrivateKey">私钥</param>
/// <returns></returns>
public static string PrivateKeyEncrypt(byte[] encryptedData, string pPrivateKey)
{
byte[] btPem = Convert.FromBase64String(pPrivateKey);
Asn1Object pubKeyObj = Asn1Object.FromByteArray(btPem);//这里也可以从流中读取，从本地导入
AsymmetricKeyParameter pubKey = PrivateKeyFactory.CreateKey(btPem);
IAsymmetricBlockCipher eng = new Pkcs1Encoding(new RsaEngine());
eng.Init(true, pubKey);//true表示加密
encryptedData = eng.ProcessBlock(encryptedData, 0, encryptedData.Length);
string result = Convert.ToBase64String(encryptedData);
return(result);
}
/// <summary>
/// RSA解密
/// </summary>
/// <param name="pCerFilePath">cer证书文件路径</param>
/// <param name="pDecryptContent">需要解密的内容</param>
/// <returns></returns>
public static byte[] RSADecrypt(string pCerFilePath, byte[] pDecryptContent)
{
using (FileStream fs = new FileStream(pCerFilePath, FileMode.Open))
{
Org.BouncyCastle.X509.X509CertificateParser cp = new Org.BouncyCastle.X509.X509CertificateParser();
Org.BouncyCastle.X509.X509Certificate[] chain = new Org.BouncyCastle.X509.X509Certificate[] {
cp.ReadCertificate(fs)
};
IAsymmetricBlockCipher eng = new Pkcs1Encoding(new RsaEngine());
eng.Init(false, chain[0].GetPublicKey());
var result = eng.ProcessBlock(pDecryptContent, 0, pDecryptContent.Length);
//
return(result);
}
}
public string DecryptByPublicKeyOnly(string source, string publicKey)
{
var publicKeyParams = this.GetPublicKeyParameters(publicKey);
BigInteger biModulus = new BigInteger(1, publicKeyParams.Item1);
BigInteger biExponent = new BigInteger(1, publicKeyParams.Item2);
RsaKeyParameters publicParameters = new RsaKeyParameters(false, biModulus, biExponent);
IAsymmetricBlockCipher eng = new Pkcs1Encoding(new RsaEngine());
eng.Init(false, publicParameters);
//解密已加密的数据
var encryptedData = Convert.FromBase64String(source);
encryptedData = eng.ProcessBlock(encryptedData, 0, encryptedData.Length);
return(Encoding.UTF8.GetString(encryptedData, 0, encryptedData.Length));
}
/// <summary>
/// 公钥加密
/// </summary>
/// <param name="data">待加密数据</param>
/// <param name="publicKey">公钥</param>
/// <returns></returns>
public static string EncryptWithPublicKey(object data, string publicKey)
{
byte[] bytesToEncrypt = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(data));
Pkcs1Encoding encryptEngine = new Pkcs1Encoding(new RsaEngine());
using (StringReader txtReader = new StringReader(publicKey))
{
AsymmetricKeyParameter keyParameter = (AsymmetricKeyParameter) new PemReader(txtReader).ReadObject();
encryptEngine.Init(true, keyParameter);
}
string encryptedText = Convert.ToBase64String(encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length));
return(encryptedText);
}
public static string KriptirajTekst(string razumljivTekst, string javniKljuc)
{
var bytesToEncrypt = Encoding.UTF8.GetBytes(razumljivTekst);
var encryptEngine = new Pkcs1Encoding(new RsaEngine());
using (var txtreader = new StringReader(javniKljuc))
{
var keyParameter = (AsymmetricKeyParameter) new PemReader(txtreader).ReadObject();
encryptEngine.Init(true, keyParameter);
}
var encrypted = Convert.ToBase64String(encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length));
return(encrypted);
}
/// <summary>
/// Encrypt data by public key
/// </summary>
/// <param name="rawData"></param>
/// <returns></returns>
public static string PublicEncrypt(string rawData)
{
BigInteger biModulus = new BigInteger(1, _btPemModulus);
BigInteger biExponent = new BigInteger(1, _btPemPublicExponent);
RsaKeyParameters publicParameters = new RsaKeyParameters(false, biModulus, biExponent);
IAsymmetricBlockCipher eng = new Pkcs1Encoding(new RsaEngine());
eng.Init(true, publicParameters);
byte[] tmp = Encoding.UTF8.GetBytes(rawData);
tmp = eng.ProcessBlock(tmp, 0, tmp.Length);
string result = Convert.ToBase64String(tmp);
return(result);
}
public static String SignData(RsaPrivateCrtKeyParameters PrivateKey, String ToBeSigned)
{
byte[] Data = Encoding.UTF8.GetBytes(ToBeSigned);
byte[] sha1Hash = SHA1.Create().ComputeHash(Data);
Pkcs1Encoding pkcs1Encoding = new Pkcs1Encoding(new RsaEngine());
pkcs1Encoding.Init(true, PrivateKey);
int inputBlockSize = pkcs1Encoding.GetInputBlockSize();
byte[] EncryptedData = pkcs1Encoding.ProcessBlock(sha1Hash, 0, sha1Hash.Length);
var signedString = Convert.ToBase64String(EncryptedData);
return(signedString);
}
/// <summary>
/// Encrypts data with the given public part of the asymmetric keypair using the RSA algorithm
/// </summary>
/// <param name="publicKey">the public part of the asymetric keypair</param>
/// <param name="data">the original data to encrypt</param>
/// <returns>the encrypted data in a base 64 string</returns>
private string EncryptWithPublicKey(string publicKey, string data)
{
var bytesToEncrypt = Encoding.UTF8.GetBytes(data);
var encryptEngine = new Pkcs1Encoding(new RsaEngine());
using (var txtreader = new StringReader(publicKey))
{
var keyParameter = (AsymmetricKeyParameter) new Org.BouncyCastle.OpenSsl.PemReader(txtreader).ReadObject();
encryptEngine.Init(true, keyParameter);
}
var encrypted = Convert.ToBase64String(encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length));
return(encrypted);
}
public static string RSADecrypt(string encryptStr, string publicKeyStr, int secretLength)
{
var bytesToDecrypt = Convert.FromBase64String(encryptStr);
var decryptEngine = new Pkcs1Encoding(new RsaEngine(), secretLength);
using (var sr = GetStreamReader(publicKeyStr))
{
var keyParameter = (AsymmetricKeyParameter) new PemReader(sr).ReadObject();
decryptEngine.Init(false, keyParameter);
}
var processBlock = decryptEngine.ProcessBlock(bytesToDecrypt, 0, bytesToDecrypt.Length);
var decryptStr = Encoding.UTF8.GetString(processBlock);
return(decryptStr);
}
/// <summary>
/// 加密
/// </summary>
/// <param name="data"></param>
/// <param name="publicKey"></param>
/// <returns></returns>
public static string Encrypt(string data, string publicKey)
{
var rsaKeyParameters = (RsaKeyParameters)PublicKeyFactory.CreateKey(Convert.FromBase64String(publicKey));
var engine = new Pkcs1Encoding(new RsaEngine());
engine.Init(true, rsaKeyParameters);
var input = Encoding.UTF8.GetBytes(data);
var output = new List <byte>();
var size = Math.Min(engine.GetInputBlockSize(), input.Length);
for (var i = 0; i < input.Length; i += size)
{
output.AddRange(engine.ProcessBlock(input, i, size));
}
return(Convert.ToBase64String(output.ToArray()));
}
private async Task Decrypt(Stream inputStream, Stream outputStream, PrivateKey privateKey, Func <string> passwordFinder)
{
if (privateKey == null)
{
throw new ArgumentNullException(nameof(privateKey));
}
var encryptEngine = new Pkcs1Encoding(new RsaEngine());
var keyReader = new StringReader(privateKey.Value);
var pr = passwordFinder != null ? new PemReader(keyReader, new PasswordFinder {
Get = passwordFinder
}) : new PemReader(keyReader);
var keyParameter = (AsymmetricCipherKeyPair)pr.ReadObject();
encryptEngine.Init(false, keyParameter?.Private ?? throw new ArgumentException("Private key was null"));
await ProcessStream(inputStream, outputStream, encryptEngine);
}
/// <summary>
/// 解密
/// </summary>
/// <param name="content"></param>
/// <param name="privateKey"></param>
/// <param name="isPKCS8"></param>
/// <returns></returns>
public static string Decrypt(string content, string privateKey, bool isPKCS8 = true)
{
var privateKeyParameters = getPrivateKeyParameters(privateKey, isPKCS8);
var input = Convert.FromBase64String(content);
var engine = new Pkcs1Encoding(new RsaEngine());
engine.Init(false, privateKeyParameters);
var output = new List <byte>();
var size = Math.Min(engine.GetInputBlockSize(), input.Length);
for (var i = 0; i < input.Length; i += size)
{
output.AddRange(engine.ProcessBlock(input, i, size));
}
return(Encoding.UTF8.GetString(output.ToArray()));
}
public static bool DecryptBuffer(this AsymmetricKeyParameter PrivateKey, string strHexedEncrypted, out byte[] aData)
{
aData = null;
try
{
byte[] aEncryptedData = strHexedEncrypted.ToByteArray();
var decryptEngine = new Pkcs1Encoding(new RsaEngine());
decryptEngine.Init(false, PrivateKey);
aData = decryptEngine.ProcessBlock(aEncryptedData, 0, aEncryptedData.Length);
return(aData.Length > 0);
}
catch (Exception e) { e.CatchMessage().TraceError("DecryptBuffer(): "); }
return(false);
}
/// <summary>
/// 公钥解密
/// </summary>
/// <param name="pContent">要解密的内容</param>
/// <param name="pPublicKey">公钥</param>
/// <returns></returns>
public static string PublicKeyDecrypt(string pContent, string pPublicKey)
{
byte[] btPem = Convert.FromBase64String(pPublicKey);
//加密、解密
Asn1Object pubKeyObj = Asn1Object.FromByteArray(btPem);//这里也可以从流中读取，从本地导入
AsymmetricKeyParameter pubKey = PublicKeyFactory.CreateKey(SubjectPublicKeyInfo.GetInstance(pubKeyObj));
IAsymmetricBlockCipher eng = new Pkcs1Encoding(new RsaEngine());
eng.Init(false, pubKey);
//解密已加密的数据
byte[] encryptedData = Convert.FromBase64String(pContent);
encryptedData = eng.ProcessBlock(encryptedData, 0, encryptedData.Length);
string result = Encoding.UTF8.GetString(encryptedData, 0, encryptedData.Length);
return(result);
}
/// <summary>
/// 私钥加密
/// </summary>
/// <param name="s"></param>
/// <param name="key"></param>
/// <returns></returns>
public string EncryptByPrivateKey(string s, string key)
{
IAsymmetricBlockCipher engine = new Pkcs1Encoding(new RsaEngine());
try
{
engine.Init(true, GetPrivateKeyParameter(key));
byte[] byteData = System.Text.Encoding.UTF8.GetBytes(s);
var ResultData = engine.ProcessBlock(byteData, 0, byteData.Length);
return(Convert.ToBase64String(ResultData));
}
catch (Exception ex)
{
return(ex.Message);
}
}
private byte[] RsaProcessor(byte[] data, int offset, int length, AsymmetricKeyParameter key)
{
Boolean forEncryption = !key.IsPrivate;
_engine.Init(forEncryption, key);
var blockSize = _engine.GetInputBlockSize();
var result = new List <byte>();
for (var i = offset; i < offset + length; i += blockSize)
{
var currentSize = Math.Min(blockSize, offset + length - i);
result.AddRange(_engine.ProcessBlock(data, i, currentSize));
}
return(result.ToArray());
}
public static string RSAEncrypt(byte[] bytesToEncrypt)
{
try
{
var publicKey = TransformKey(KeyType.PublicKey);
var encryptEngine = new Pkcs1Encoding(new RsaEngine());
encryptEngine.Init(true, publicKey);
var encrypted = encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length).ToBase64();
return(encrypted);
}
catch (Exception e)
{
FileHelper.WriteFile(ErrorHelper.FormatError(e), FileHelper.ErrorPath, true);
return(null);
}
}
/// <summary>
/// Decrypt an encrypted text with RSA.
/// </summary>
/// <param name="encryptedText">The encrypted text.</param>
/// <param name="privateKeyPath">The private key path.</param>
/// <param name="chosenEncoding">The chosen encoding.</param>
/// <returns>Returns a decrypted text.</returns>
public static string Decrypt(string encryptedText, string privateKeyPath, string chosenEncoding = "UTF8")
{
var bytesToDecrypt = Encoding.Unicode.GetBytes(encryptedText);
var decryptEngine = new Pkcs1Encoding(new RsaEngine());
using (var txtreader = System.IO.File.OpenText(privateKeyPath))
{
var privateKey = (AsymmetricCipherKeyPair) new PemReader(txtreader).ReadObject();
decryptEngine.Init(false, privateKey.Private);
}
var decrypted = GeneralUtils.Encode(bytesToDecrypt, x => decryptEngine.ProcessBlock(x, 0, x.Length), chosenEncoding);
return(decrypted);
}
/// <summary>
/// Encrypt a plain text with RSA and base64 encode it.
/// </summary>
/// <param name="clearText">The plain text.</param>
/// <param name="publicKeyPath">The public key path.</param>
/// <returns>Returns an encrypted and base64 encoded text.</returns>
public static string EncryptAndBase64Encode(string clearText, string publicKeyPath)
{
var bytesToEncrypt = Encoding.UTF8.GetBytes(clearText);
var encryptEngine = new Pkcs1Encoding(new RsaEngine());
using (var txtreader = File.OpenText(publicKeyPath))
{
var publicKey = (AsymmetricKeyParameter) new PemReader(txtreader).ReadObject();
encryptEngine.Init(true, publicKey);
}
var encrypted = Convert.ToBase64String(encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length));
return(encrypted);
}
/// <summary>
/// Encrypt a plain text with RSA.
/// </summary>
/// <param name="plainText">The plain text.</param>
/// <param name="publicKeyPath">The public key path.</param>
/// <returns>Returns an encrypted text.</returns>
public static string Encrypt(string plainText, string publicKeyPath)
{
var bytesToEncrypt = Encoding.UTF8.GetBytes(plainText);
var encryptEngine = new Pkcs1Encoding(new RsaEngine());
using (var txtreader = File.OpenText(publicKeyPath))
{
var publicKey = (AsymmetricKeyParameter) new PemReader(txtreader).ReadObject();
encryptEngine.Init(true, publicKey);
}
var encrypted = GeneralUtils.Encode(bytesToEncrypt, x => encryptEngine.ProcessBlock(x, 0, x.Length), "Unicode");
return(encrypted);
}
public static string EncryptByPrivateKey(string s, string key)
{
IAsymmetricBlockCipher engine = new Pkcs1Encoding(new RsaEngine());
try
{
engine.Init(true, GetPrivateKeyParameter(key));
var byteData = Encoding.UTF8.GetBytes(s);
var resultData = engine.ProcessBlock(byteData, 0, byteData.Length);
return(Convert.ToBase64String(resultData));
//Console.WriteLine("密文（base64编码）:" + Convert.ToBase64String(testData) + Environment.NewLine);
}
catch (Exception ex)
{
return(ex.Message);
}
}
