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Copy pathEncryptProvider.cs
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1256 lines (1076 loc) · 44.9 KB
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using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;
using System.IO;
using NETCore.Encrypt.Shared;
using NETCore.Encrypt.Extensions;
using NETCore.Encrypt.Internal;
using NETCore.Encrypt.Extensions.Internal;
namespace NETCore.Encrypt
{
public class EncryptProvider
{
#region Common
/// <summary>
/// Generate a random key
/// </summary>
/// <param name="n">key length，IV is 16，Key is 32</param>
/// <returns>return random value</returns>
private static string GetRandomStr(int length)
{
char[] arrChar = new char[]{
'a','b','d','c','e','f','g','h','i','j','k','l','m','n','p','r','q','s','t','u','v','w','z','y','x',
'0','1','2','3','4','5','6','7','8','9',
'A','B','C','D','E','F','G','H','I','J','K','L','M','N','Q','P','R','T','S','V','U','W','X','Y','Z'
};
StringBuilder num = new StringBuilder();
Random rnd = new Random(DateTime.Now.Millisecond);
for (int i = 0; i < length; i++)
{
num.Append(arrChar[rnd.Next(0, arrChar.Length)].ToString());
}
return num.ToString();
}
#endregion
#region AES
/// <summary>
/// Create ase key
/// </summary>
/// <returns></returns>
public static AESKey CreateAesKey()
{
return new AESKey()
{
Key = GetRandomStr(32),
IV = GetRandomStr(16)
};
}
/// <summary>
/// AES encrypt
/// </summary>
/// <param name="data">Raw data</param>
/// <param name="key">Key, requires 32 bits</param>
/// <param name="vector">IV,requires 16 bits</param>
/// <returns>Encrypted string</returns>
public static string AESEncrypt(string data, string key, string vector)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 32, 32, nameof(key));
Check.Argument.IsNotEmpty(vector, nameof(vector));
Check.Argument.IsNotOutOfRange(vector.Length, 16, 16, nameof(vector));
byte[] plainBytes = Encoding.UTF8.GetBytes(data);
var encryptBytes = AESEncrypt(plainBytes, key, vector);
if (encryptBytes == null)
{
return null;
}
return Convert.ToBase64String(encryptBytes);
}
/// <summary>
/// AES encrypt
/// </summary>
/// <param name="data">Raw data</param>
/// <param name="key">Key, requires 32 bits</param>
/// <param name="vector">IV,requires 16 bits</param>
/// <returns>Encrypted byte array</returns>
public static byte[] AESEncrypt(byte[] data, string key, string vector)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 32, 32, nameof(key));
Check.Argument.IsNotEmpty(vector, nameof(vector));
Check.Argument.IsNotOutOfRange(vector.Length, 16, 16, nameof(vector));
byte[] plainBytes = data;
byte[] bKey = new byte[32];
Array.Copy(Encoding.UTF8.GetBytes(key.PadRight(bKey.Length)), bKey, bKey.Length);
byte[] bVector = new byte[16];
Array.Copy(Encoding.UTF8.GetBytes(vector.PadRight(bVector.Length)), bVector, bVector.Length);
byte[] encryptData = null; // encrypted data
using (Aes Aes = Aes.Create())
{
try
{
using (MemoryStream Memory = new MemoryStream())
{
using (CryptoStream Encryptor = new CryptoStream(Memory,
Aes.CreateEncryptor(bKey, bVector),
CryptoStreamMode.Write))
{
Encryptor.Write(plainBytes, 0, plainBytes.Length);
Encryptor.FlushFinalBlock();
encryptData = Memory.ToArray();
}
}
}
catch
{
encryptData = null;
}
return encryptData;
}
}
/// <summary>
/// AES decrypt
/// </summary>
/// <param name="data">Encrypted data</param>
/// <param name="key">Key, requires 32 bits</param>
/// <param name="vector">IV,requires 16 bits</param>
/// <returns>Decrypted string</returns>
public static string AESDecrypt(string data, string key, string vector)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 32, 32, nameof(key));
Check.Argument.IsNotEmpty(vector, nameof(vector));
Check.Argument.IsNotOutOfRange(vector.Length, 16, 16, nameof(vector));
byte[] encryptedBytes = Convert.FromBase64String(data);
byte[] decryptBytes = AESDecrypt(encryptedBytes, key, vector);
if (decryptBytes == null)
{
return null;
}
return Encoding.UTF8.GetString(decryptBytes);
}
/// <summary>
/// AES decrypt
/// </summary>
/// <param name="data">Encrypted data</param>
/// <param name="key">Key, requires 32 bits</param>
/// <param name="vector">IV,requires 16 bits</param>
/// <returns>Decrypted byte array</returns>
public static byte[] AESDecrypt(byte[] data, string key, string vector)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 32, 32, nameof(key));
Check.Argument.IsNotEmpty(vector, nameof(vector));
Check.Argument.IsNotOutOfRange(vector.Length, 16, 16, nameof(vector));
byte[] encryptedBytes = data;
byte[] bKey = new byte[32];
Array.Copy(Encoding.UTF8.GetBytes(key.PadRight(bKey.Length)), bKey, bKey.Length);
byte[] bVector = new byte[16];
Array.Copy(Encoding.UTF8.GetBytes(vector.PadRight(bVector.Length)), bVector, bVector.Length);
byte[] decryptedData = null; // decrypted data
using (Aes Aes = Aes.Create())
{
try
{
using (MemoryStream Memory = new MemoryStream(encryptedBytes))
{
using (CryptoStream Decryptor = new CryptoStream(Memory, Aes.CreateDecryptor(bKey, bVector), CryptoStreamMode.Read))
{
using (MemoryStream tempMemory = new MemoryStream())
{
byte[] Buffer = new byte[1024];
Int32 readBytes = 0;
while ((readBytes = Decryptor.Read(Buffer, 0, Buffer.Length)) > 0)
{
tempMemory.Write(Buffer, 0, readBytes);
}
decryptedData = tempMemory.ToArray();
}
}
}
}
catch
{
decryptedData = null;
}
return decryptedData;
}
}
/// <summary>
/// AES encrypt ( no IV)
/// </summary>
/// <param name="data">Raw data</param>
/// <param name="key">Key, requires 32 bits</param>
/// <returns>Encrypted string</returns>
public static string AESEncrypt(string data, string key)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 32, 32, nameof(key));
using (MemoryStream Memory = new MemoryStream())
{
using (Aes aes = Aes.Create())
{
byte[] plainBytes = Encoding.UTF8.GetBytes(data);
byte[] bKey = new byte[32];
Array.Copy(Encoding.UTF8.GetBytes(key.PadRight(bKey.Length)), bKey, bKey.Length);
aes.Mode = CipherMode.ECB;
aes.Padding = PaddingMode.PKCS7;
aes.KeySize = 128;
aes.Key = bKey;
using (CryptoStream cryptoStream = new CryptoStream(Memory, aes.CreateEncryptor(), CryptoStreamMode.Write))
{
try
{
cryptoStream.Write(plainBytes, 0, plainBytes.Length);
cryptoStream.FlushFinalBlock();
return Convert.ToBase64String(Memory.ToArray());
}
catch (Exception ex)
{
return null;
}
}
}
}
}
/// <summary>
/// AES decrypt( no IV)
/// </summary>
/// <param name="data">Encrypted data</param>
/// <param name="key">Key, requires 32 bits</param>
/// <returns>Decrypted string</returns>
public static string AESDecrypt(string data, string key)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 32, 32, nameof(key));
byte[] encryptedBytes = Convert.FromBase64String(data);
byte[] bKey = new byte[32];
Array.Copy(Encoding.UTF8.GetBytes(key.PadRight(bKey.Length)), bKey, bKey.Length);
using (MemoryStream Memory = new MemoryStream(encryptedBytes))
{
using (Aes aes = Aes.Create())
{
aes.Mode = CipherMode.ECB;
aes.Padding = PaddingMode.PKCS7;
aes.KeySize = 128;
aes.Key = bKey;
using (CryptoStream cryptoStream = new CryptoStream(Memory, aes.CreateDecryptor(), CryptoStreamMode.Read))
{
try
{
byte[] tmp = new byte[encryptedBytes.Length];
int len = cryptoStream.Read(tmp, 0, encryptedBytes.Length);
byte[] ret = new byte[len];
Array.Copy(tmp, 0, ret, 0, len);
return Encoding.UTF8.GetString(ret, 0, len);
}
catch (Exception ex)
{
return null;
}
}
}
}
}
/// <summary>
/// AES Rijndael
/// </summary>
public static void AESRijndael()
{
throw new NotImplementedException();
}
#endregion
#region DES
/// <summary>
/// Create des key
/// </summary>
/// <returns></returns>
public static string CreateDesKey()
{
return GetRandomStr(24);
}
/// <summary>
/// Create des iv
/// </summary>
/// <returns></returns>
public static string CreateDesIv()
{
return GetRandomStr(8);
}
/// <summary>
/// DES encrypt
/// </summary>
/// <param name="data">Raw data</param>
/// <param name="key">Key, requires 24 bits</param>
/// <returns>Encrypted string</returns>
public static string DESEncrypt(string data, string key)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 24, 24, nameof(key));
byte[] plainBytes = Encoding.UTF8.GetBytes(data);
var encryptBytes = DESEncrypt(plainBytes, key, CipherMode.ECB);
if (encryptBytes == null)
{
return null;
}
return Convert.ToBase64String(encryptBytes);
}
/// <summary>
/// DES encrypt
/// </summary>
/// <param name="data">Raw data byte array</param>
/// <param name="key">Key, requires 24 bits</param>
/// <returns>Encrypted byte array</returns>
public static byte[] DESEncrypt(byte[] data, string key)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 24, 24, nameof(key));
return DESEncrypt(data, key, CipherMode.ECB);
}
/// <summary>
/// DES encrypt
/// </summary>
/// <param name="data">Raw data byte array</param>
/// <param name="key">Key, requires 24 bits</param>
/// <param name="vector">IV,requires 16 bits</param>
/// <returns>Encrypted byte array</returns>
public static byte[] DESEncrypt(byte[] data, string key, string vector)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 24, 24, nameof(key));
Check.Argument.IsNotEmpty(vector, nameof(vector));
Check.Argument.IsNotOutOfRange(vector.Length, 8, 8, nameof(vector));
return DESEncrypt(data, key, CipherMode.CBC, vector);
}
/// <summary>
/// DES encrypt
/// </summary>
/// <param name="data">Raw data</param>
/// <param name="key">Key, requires 24 bits</param>
/// <param name="cipherMode"><see cref="CipherMode"/></param>
/// <param name="paddingMode"><see cref="PaddingMode"/> default is PKCS7</param>
/// <param name="vector">IV,requires 16 bits</param>
/// <returns>Encrypted byte array</returns>
private static byte[] DESEncrypt(byte[] data, string key, CipherMode cipherMode, string vector = "", PaddingMode paddingMode = PaddingMode.PKCS7)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 24, 24, nameof(key));
using (MemoryStream Memory = new MemoryStream())
{
using (TripleDES des = TripleDES.Create())
{
byte[] plainBytes = data;
byte[] bKey = new byte[24];
Array.Copy(Encoding.UTF8.GetBytes(key.PadRight(bKey.Length)), bKey, bKey.Length);
des.Mode = cipherMode;
des.Padding = paddingMode;
des.Key = bKey;
if (cipherMode == CipherMode.CBC)
{
byte[] bVector = new byte[8];
Array.Copy(Encoding.UTF8.GetBytes(vector.PadRight(bVector.Length)), bVector, bVector.Length);
des.IV = bVector;
}
using (CryptoStream cryptoStream = new CryptoStream(Memory, des.CreateEncryptor(), CryptoStreamMode.Write))
{
try
{
cryptoStream.Write(plainBytes, 0, plainBytes.Length);
cryptoStream.FlushFinalBlock();
return Memory.ToArray();
}
catch (Exception ex)
{
return null;
}
}
}
}
}
/// <summary>
/// DES decrypt
/// </summary>
/// <param name="data">Encrypted data</param>
/// <param name="key">Key, requires 24 bits</param>
/// <returns>Decrypted string</returns>
public static string DESDecrypt(string data, string key)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 24, 24, nameof(key));
byte[] encryptedBytes = Convert.FromBase64String(data);
byte[] bytes = DESDecrypt(encryptedBytes, key, CipherMode.ECB);
if (bytes == null)
{
return null;
}
return Encoding.UTF8.GetString(bytes);
}
/// <summary>
/// DES decrypt
/// </summary>
/// <param name="data">Encrypted data byte array</param>
/// <param name="key">Key, requires 24 bits</param>
/// <returns>Decrypted string</returns>
public static byte[] DESDecrypt(byte[] data, string key)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 24, 24, nameof(key));
return DESDecrypt(data, key, CipherMode.ECB);
}
/// <summary>
/// DES encrypt
/// </summary>
/// <param name="data">Raw data byte array</param>
/// <param name="key">Key, requires 24 bits</param>
/// <param name="vector">IV,requires 16 bits</param>
/// <returns>Encrypted byte array</returns>
public static byte[] DESDecrypt(byte[] data, string key, string vector)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 24, 24, nameof(key));
Check.Argument.IsNotEmpty(vector, nameof(vector));
Check.Argument.IsNotOutOfRange(vector.Length, 8, 8, nameof(vector));
return DESDecrypt(data, key, CipherMode.CBC, vector);
}
/// <summary>
/// DES decrypt
/// </summary>
/// <param name="data">Encrypted data</param>
/// <param name="key">Key, requires 24 bits</param>
/// <param name="cipherMode"><see cref="CipherMode"/></param>
/// <param name="paddingMode"><see cref="PaddingMode"/> default is PKCS7</param>
/// <returns>Decrypted byte array</returns>
private static byte[] DESDecrypt(byte[] data, string key, CipherMode cipherMode, string vector = "", PaddingMode paddingMode = PaddingMode.PKCS7)
{
Check.Argument.IsNotEmpty(data, nameof(data));
Check.Argument.IsNotEmpty(key, nameof(key));
Check.Argument.IsNotOutOfRange(key.Length, 24, 24, nameof(key));
byte[] encryptedBytes = data;
byte[] bKey = new byte[24];
Array.Copy(Encoding.UTF8.GetBytes(key.PadRight(bKey.Length)), bKey, bKey.Length);
using (MemoryStream Memory = new MemoryStream(encryptedBytes))
{
using (TripleDES des = TripleDES.Create())
{
des.Mode = cipherMode;
des.Padding = paddingMode;
des.Key = bKey;
if (cipherMode == CipherMode.CBC)
{
byte[] bVector = new byte[8];
Array.Copy(Encoding.UTF8.GetBytes(vector.PadRight(bVector.Length)), bVector, bVector.Length);
des.IV = bVector;
}
using (CryptoStream cryptoStream = new CryptoStream(Memory, des.CreateDecryptor(), CryptoStreamMode.Read))
{
try
{
byte[] tmp = new byte[encryptedBytes.Length];
int len = cryptoStream.Read(tmp, 0, encryptedBytes.Length);
byte[] ret = new byte[len];
Array.Copy(tmp, 0, ret, 0, len);
return ret;
}
catch
{
return null;
}
}
}
}
}
#endregion
#region RSA
/// <summary>
/// RSA Converter to pem
/// </summary>
/// <param name="isPKCS8"></param>
/// <returns></returns>
public static (string publicPem, string privatePem) RSAToPem(bool isPKCS8)
{
var rsaKey = CreateRsaKey();
using (RSA rsa = RSA.Create())
{
rsa.FromJsonString(rsaKey.PrivateKey);
var publicPem = RsaProvider.ToPem(rsa, false, isPKCS8);
var privatePem = RsaProvider.ToPem(rsa, true, isPKCS8);
return (publicPem, privatePem);
}
}
/// <summary>
/// RSA From pem
/// </summary>
/// <param name="pem"></param>
/// <returns></returns>
public static RSA RSAFromPem(string pem)
{
Check.Argument.IsNotEmpty(pem, nameof(pem));
return RsaProvider.FromPem(pem);
}
/// <summary>
/// RSA Sign
/// </summary>
/// <param name="conent">raw cotent </param>
/// <param name="privateKey">private key</param>
/// <returns></returns>
public static string RSASign(string conent, string privateKey)
{
return RSASign(conent, privateKey, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1, Encoding.UTF8);
}
/// <summary>
/// RSA Sign
/// </summary>
/// <param name="content">raw content </param>
/// <param name="privateKey">private key</param>
/// <param name="hashAlgorithmName">hashAlgorithm name</param>
/// <param name="rSASignaturePadding">ras siginature padding</param>
/// <param name="encoding">text encoding</param>
/// <returns></returns>
public static string RSASign(string content, string privateKey, HashAlgorithmName hashAlgorithmName, RSASignaturePadding rSASignaturePadding, Encoding encoding)
{
Check.Argument.IsNotEmpty(content, nameof(content));
Check.Argument.IsNotEmpty(privateKey, nameof(privateKey));
Check.Argument.IsNotNull(rSASignaturePadding, nameof(rSASignaturePadding));
byte[] dataBytes = encoding.GetBytes(content);
using (RSA rsa = RSA.Create())
{
rsa.FromJsonString(privateKey);
var signBytes = rsa.SignData(dataBytes, hashAlgorithmName, rSASignaturePadding);
return Convert.ToBase64String(signBytes);
}
}
/// <summary>
/// RSA Verify
/// </summary>
/// <param name="content">raw content</param>
/// <param name="signStr">sign str</param>
/// <param name="publickKey">public key</param>
/// <returns></returns>
public static bool RSAVerify(string content, string signStr, string publickKey)
{
return RSAVerify(content, signStr, publickKey, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1, Encoding.UTF8);
}
/// <summary>
/// RSA Verify
/// </summary>
/// <param name="content">raw content</param>
/// <param name="signStr">sign str</param>
/// <param name="publickKey">public key</param>
/// <param name="hashAlgorithmName">hashAlgorithm name</param>
/// <param name="rSASignaturePadding">ras siginature padding</param>
/// <param name="encoding">text encoding</param>
/// <returns></returns>
public static bool RSAVerify(string content, string signStr, string publickKey, HashAlgorithmName hashAlgorithmName, RSASignaturePadding rSASignaturePadding, Encoding encoding)
{
Check.Argument.IsNotEmpty(content, nameof(content));
Check.Argument.IsNotEmpty(signStr, nameof(signStr));
byte[] dataBytes = encoding.GetBytes(content);
byte[] signBytes = Convert.FromBase64String(signStr);
using (RSA rsa = RSA.Create())
{
rsa.FromJsonString(publickKey);
return rsa.VerifyData(dataBytes, signBytes, hashAlgorithmName, rSASignaturePadding);
}
}
/// <summary>
/// RSA encrypt
/// </summary>
/// <param name="publicKey">public key</param>
/// <param name="srcString">src string</param>
/// <returns>encrypted string</returns>
public static string RSAEncrypt(string publicKey, string srcString)
{
string encryptStr = RSAEncrypt(publicKey, srcString, RSAEncryptionPadding.OaepSHA512);
return encryptStr;
}
/// <summary>
/// RSA encrypt with pem key
/// </summary>
/// <param name="publicKey">pem public key</param>
/// <param name="scrString">src string</param>
/// <returns></returns>
public static string RSAEncryptWithPem(string publicKey, string srcString)
{
string encryptStr = RSAEncrypt(publicKey, srcString, RSAEncryptionPadding.Pkcs1, true);
return encryptStr;
}
/// <summary>
/// RSA encrypt
/// </summary>
/// <param name="publicKey">public key</param>
/// <param name="srcString">src string</param>
/// <param name="padding">rsa encryptPadding <see cref="RSAEncryptionPadding"/> RSAEncryptionPadding.Pkcs1 for linux/mac openssl </param>
/// <param name="isPemKey">set key is pem format,default is false</param>
/// <returns>encrypted string</returns>
public static string RSAEncrypt(string publicKey, string srcString, RSAEncryptionPadding padding, bool isPemKey = false)
{
Check.Argument.IsNotEmpty(publicKey, nameof(publicKey));
Check.Argument.IsNotEmpty(srcString, nameof(srcString));
Check.Argument.IsNotNull(padding, nameof(padding));
RSA rsa;
if (isPemKey)
{
rsa = RsaProvider.FromPem(publicKey);
}
else
{
rsa = RSA.Create();
rsa.FromJsonString(publicKey);
}
using (rsa)
{
var maxLength = GetMaxRsaEncryptLength(rsa, padding);
var rawBytes = Encoding.UTF8.GetBytes(srcString);
if (rawBytes.Length > maxLength)
{
throw new OutofMaxlengthException($"'{srcString}' is out of max encrypt length {maxLength}", maxLength, rsa.KeySize, padding);
}
byte[] encryptBytes = rsa.Encrypt(rawBytes, padding);
return encryptBytes.ToHexString();
}
}
/// <summary>
/// RSA decrypt
/// </summary>
/// <param name="privateKey">private key</param>
/// <param name="srcString">encrypted string</param>
/// <returns>Decrypted string</returns>
public static string RSADecrypt(string privateKey, string srcString)
{
string decryptStr = RSADecrypt(privateKey, srcString, RSAEncryptionPadding.OaepSHA512);
return decryptStr;
}
/// <summary>
/// RSA decrypt with pem key
/// </summary>
/// <param name="privateKey">pem private key</param>
/// <param name="scrString">src string</param>
/// <returns></returns>
public static string RSADecryptWithPem(string privateKey, string srcString)
{
string decryptStr = RSADecrypt(privateKey, srcString, RSAEncryptionPadding.Pkcs1, true);
return decryptStr;
}
/// <summary>
/// RSA encrypt
/// </summary>
/// <param name="publicKey">public key</param>
/// <param name="srcString">src string</param>
/// <param name="padding">rsa encryptPadding <see cref="RSAEncryptionPadding"/> RSAEncryptionPadding.Pkcs1 for linux/mac openssl </param>
/// <param name="isPemKey">set key is pem format,default is false</param>
/// <returns>encrypted string</returns>
public static string RSADecrypt(string privateKey, string srcString, RSAEncryptionPadding padding, bool isPemKey = false)
{
Check.Argument.IsNotEmpty(privateKey, nameof(privateKey));
Check.Argument.IsNotEmpty(srcString, nameof(srcString));
Check.Argument.IsNotNull(padding, nameof(padding));
RSA rsa;
if (isPemKey)
{
rsa = RsaProvider.FromPem(privateKey);
}
else
{
rsa = RSA.Create();
rsa.FromJsonString(privateKey);
}
using (rsa)
{
byte[] srcBytes = srcString.ToBytes();
byte[] decryptBytes = rsa.Decrypt(srcBytes, padding);
return Encoding.UTF8.GetString(decryptBytes);
}
}
/// <summary>
/// RSA from json string
/// </summary>
/// <param name="rsaKey">rsa json string</param>
/// <returns></returns>
public static RSA RSAFromString(string rsaKey)
{
Check.Argument.IsNotEmpty(rsaKey, nameof(rsaKey));
RSA rsa = RSA.Create();
rsa.FromJsonString(rsaKey);
return rsa;
}
/// <summary>
/// Create an RSA key
/// </summary>
/// <param name="keySizeInBits">the default size is 2048</param>
/// <returns></returns>
public static RSAKey CreateRsaKey(RsaSize rsaSize = RsaSize.R2048)
{
using (RSA rsa = RSA.Create())
{
rsa.KeySize = (int)rsaSize;
string publicKey = rsa.ToJsonString(false);
string privateKey = rsa.ToJsonString(true);
return new RSAKey()
{
PublicKey = publicKey,
PrivateKey = privateKey,
Exponent = rsa.ExportParameters(false).Exponent.ToHexString(),
Modulus = rsa.ExportParameters(false).Modulus.ToHexString()
};
}
}
/// <summary>
/// Create an RSA key
/// </summary>
/// <param name="rsa">rsa</param>
/// <param name="includePrivate"></param>
/// <returns></returns>
public static RSAKey CreateRsaKey(RSA rsa, bool includePrivate = true)
{
Check.Argument.IsNotNull(rsa, nameof(rsa));
string publicKey = rsa.ToJsonString(false);
var rsaKey = new RSAKey()
{
PublicKey = publicKey,
Exponent = rsa.ExportParameters(false).Exponent.ToHexString(),
Modulus = rsa.ExportParameters(false).Modulus.ToHexString()
};
if (includePrivate)
{
string privateKey = rsa.ToJsonString(true);
rsaKey.PrivateKey = privateKey;
}
return rsaKey;
}
/// <summary>
/// Get rsa encrypt max length
/// </summary>
/// <param name="rsa">Rsa instance </param>
/// <param name="padding"><see cref="RSAEncryptionPadding"/></param>
/// <returns></returns>
private static int GetMaxRsaEncryptLength(RSA rsa, RSAEncryptionPadding padding)
{
var offset = 0;
if (padding.Mode == RSAEncryptionPaddingMode.Pkcs1)
{
offset = 11;
}
else
{
if (padding.Equals(RSAEncryptionPadding.OaepSHA1))
{
offset = 42;
}
if (padding.Equals(RSAEncryptionPadding.OaepSHA256))
{
offset = 66;
}
if (padding.Equals(RSAEncryptionPadding.OaepSHA384))
{
offset = 98;
}
if (padding.Equals(RSAEncryptionPadding.OaepSHA512))
{
offset = 130;
}
}
var keySize = rsa.KeySize;
var maxLength = keySize / 8 - offset;
return maxLength;
}
#endregion
#region MD5
/// <summary>
/// MD5 hash
/// </summary>
/// <param name="srcString">The string to be encrypted.</param>
/// <param name="length">The length of hash result , default value is <see cref="MD5Length.L32"/>.</param>
/// <returns></returns>
public static string Md5(string srcString, MD5Length length = MD5Length.L32)
{
Check.Argument.IsNotEmpty(srcString, nameof(srcString));
string str_md5_out = string.Empty;
using (MD5 md5 = MD5.Create())
{
byte[] bytes_md5_in = Encoding.UTF8.GetBytes(srcString);
byte[] bytes_md5_out = md5.ComputeHash(bytes_md5_in);
str_md5_out = length == MD5Length.L32
? BitConverter.ToString(bytes_md5_out)
: BitConverter.ToString(bytes_md5_out, 4, 8);
str_md5_out = str_md5_out.Replace("-", "");
return str_md5_out;
}
}
#endregion
#region HMACMD5
/// <summary>
/// HMACMD5 hash
/// </summary>
/// <param name="srcString">The string to be encrypted</param>
/// <param name="key">encrypte key</param>
/// <returns></returns>
public static string HMACMD5(string srcString, string key)
{
Check.Argument.IsNotEmpty(srcString, nameof(srcString));
Check.Argument.IsNotEmpty(key, nameof(key));
byte[] secrectKey = Encoding.UTF8.GetBytes(key);
using (HMACMD5 md5 = new HMACMD5(secrectKey))
{
byte[] bytes_md5_in = Encoding.UTF8.GetBytes(srcString);
byte[] bytes_md5_out = md5.ComputeHash(bytes_md5_in);
string str_md5_out = BitConverter.ToString(bytes_md5_out);
str_md5_out = str_md5_out.Replace("-", "");
return str_md5_out;
}
}
#endregion
#region SHA1
/// <summary>
/// SHA1加密
/// </summary>
/// <param name="str">The string to be encrypted</param>
/// <returns></returns>
public static string Sha1(string str)
{
Check.Argument.IsNotEmpty(str, "SHA1待加密字符");
using (SHA1 sha1 = SHA1.Create())
{
byte[] bytes_sha1_in = Encoding.UTF8.GetBytes(str);
byte[] bytes_sha1_out = sha1.ComputeHash(bytes_sha1_in);
string str_sha1_out = BitConverter.ToString(bytes_sha1_out);
str_sha1_out = str_sha1_out.Replace("-", "");
return str_sha1_out;
}
}
#endregion
#region SHA256
/// <summary>
/// SHA256 encrypt
/// </summary>
/// <param name="srcString">The string to be encrypted</param>
/// <returns></returns>
public static string Sha256(string srcString)
{
Check.Argument.IsNotEmpty(srcString, nameof(srcString));
using (SHA256 sha256 = SHA256.Create())
{
byte[] bytes_sha256_in = Encoding.UTF8.GetBytes(srcString);
byte[] bytes_sha256_out = sha256.ComputeHash(bytes_sha256_in);
string str_sha256_out = BitConverter.ToString(bytes_sha256_out);
str_sha256_out = str_sha256_out.Replace("-", "");
return str_sha256_out;
}
}
#endregion
#region SHA384
/// <summary>
/// SHA384 encrypt
/// </summary>
/// <param name="srcString">The string to be encrypted</param>
/// <returns></returns>
public static string Sha384(string srcString)
{
Check.Argument.IsNotEmpty(srcString, nameof(srcString));
using (SHA384 sha384 = SHA384.Create())
{
byte[] bytes_sha384_in = Encoding.UTF8.GetBytes(srcString);
byte[] bytes_sha384_out = sha384.ComputeHash(bytes_sha384_in);
string str_sha384_out = BitConverter.ToString(bytes_sha384_out);