/*
* 由SharpDevelop创建。
* 用户: Administrator
* 日期: 2018-04-17
* 时间: 12:06
*
* 要改变这种模板请点击 工具|选项|代码编写|编辑标准头文件
*/
using System.Security.Cryptography;
using System;
using System.Text;
using System.Web;
using System.Web.Security;
namespace lq.Security{
class
RSACryption
{
#region RSA 加密解密
#region RSA 的密钥产生
/// <summary>
/// RSA产生密钥
/// </summary>
/// <param name="xmlKeys">私钥</param>
/// <param name="xmlPublicKey">公钥</param>
public
void
RSAKey(
out
string xmlKeys,
out
string xmlPublicKey)
{
try
{
System.Security.Cryptography.
RSACryptoServiceProvider rsa =
new
RSACryptoServiceProvider();
xmlKeys = rsa.
ToXmlString(
true);
xmlPublicKey = rsa.
ToXmlString(
false);
}
catch (
Exception ex)
{
throw ex;
}
}
#endregion
#region RSA加密函数
//##############################################################################
//RSA 方式加密
//KEY必须是XML的形式,返回的是字符串
//该加密方式有长度限制的!
//##############################################################################
/// <summary>
/// RSA的加密函数
/// </summary>
/// <param name="xmlPublicKey">公钥</param>
/// <param name="encryptString">待加密的字符串</param>
/// <returns></returns>
public
string
RSAEncrypt(
string xmlPublicKey,
string encryptString)
{
try
{
byte[] PlainTextBArray;
byte[] CypherTextBArray;
string Result;
System.Security.Cryptography.
RSACryptoServiceProvider rsa =
new
RSACryptoServiceProvider();
rsa.
FromXmlString(xmlPublicKey);
PlainTextBArray = (
new
UnicodeEncoding()).
GetBytes(encryptString);
CypherTextBArray = rsa.
Encrypt(PlainTextBArray,
false);
Result =
Convert.
ToBase64String(CypherTextBArray);
return Result;
}
catch (
Exception ex)
{
throw ex;
}
}
/// <summary>
/// RSA的加密函数
/// </summary>
/// <param name="xmlPublicKey">公钥</param>
/// <param name="EncryptString">待加密的字节数组</param>
/// <returns></returns>
public
string
RSAEncrypt(
string xmlPublicKey,
byte[] EncryptString)
{
try
{
byte[] CypherTextBArray;
string Result;
System.Security.Cryptography.
RSACryptoServiceProvider rsa =
new
RSACryptoServiceProvider();
rsa.
FromXmlString(xmlPublicKey);
CypherTextBArray = rsa.
Encrypt(EncryptString,
false);
Result =
Convert.
ToBase64String(CypherTextBArray);
return Result;
}
catch (
Exception ex)
{
throw ex;
}
}
#endregion
#region RSA的解密函数
/// <summary>
/// RSA的解密函数
/// </summary>
/// <param name="xmlPrivateKey">私钥</param>
/// <param name="decryptString">待解密的字符串</param>
/// <returns></returns>
public
string
RSADecrypt(
string xmlPrivateKey,
string decryptString)
{
try
{
byte[] PlainTextBArray;
byte[] DypherTextBArray;
string Result;
System.Security.Cryptography.
RSACryptoServiceProvider rsa =
new
RSACryptoServiceProvider();
rsa.
FromXmlString(xmlPrivateKey);
PlainTextBArray =
Convert.
FromBase64String(decryptString);
DypherTextBArray = rsa.
Decrypt(PlainTextBArray,
false);
Result = (
new
UnicodeEncoding()).
GetString(DypherTextBArray);
return Result;
}
catch (
Exception ex)
{
throw ex;
}
}
/// <summary>
/// RSA的解密函数
/// </summary>
/// <param name="xmlPrivateKey">私钥</param>
/// <param name="DecryptString">待解密的字节数组</param>
/// <returns></returns>
public
string
RSADecrypt(
string xmlPrivateKey,
byte[] DecryptString)
{
try
{
byte[] DypherTextBArray;
string Result;
System.Security.Cryptography.
RSACryptoServiceProvider rsa =
new
RSACryptoServiceProvider();
rsa.
FromXmlString(xmlPrivateKey);
DypherTextBArray = rsa.
Decrypt(DecryptString,
false);
Result = (
new
UnicodeEncoding()).
GetString(DypherTextBArray);
return Result;
}
catch (
Exception ex)
{
throw ex;
}
}
#endregion
#endregion
public
string
GetStrMd5(
string ConvertString)
{
string strBodyBase64 =
Convert.
ToBase64String(
Encoding.UTF8.
GetBytes(ConvertString));
string t2=System.Web. Security.
FormsAuthentication.
HashPasswordForStoringInConfigFile(strBodyBase64,
"MD5").
ToUpper();
return t2;
}
#region RSA数字签名
#region 获取Hash描述表
/// <summary>
/// 获取Hash描述表
/// </summary>
/// <param name="strSource">待签名的字符串</param>
/// <param name="HashData">Hash描述</param>
/// <returns></returns>
public
bool
GetHash(
string strSource,
ref
byte[] HashData)
{
try
{
byte[] Buffer;
System.Security.Cryptography.
HashAlgorithm MD5 = System.Security.Cryptography.
HashAlgorithm.
Create(
"MD5");
Buffer = System.Text.
Encoding.
GetEncoding(
"GB2312").
GetBytes(strSource);
HashData = MD5.
ComputeHash(Buffer);
return
true;
}
catch (
Exception ex)
{
throw ex;
}
}
/// <summary>
/// 获取Hash描述表
/// </summary>
/// <param name="strSource">待签名的字符串</param>
/// <param name="strHashData">Hash描述</param>
/// <returns></returns>
public
bool
GetHash(
string strSource,
ref
string strHashData)
{
try
{
//从字符串中取得Hash描述
byte[] Buffer;
byte[] HashData;
System.Security.Cryptography.
HashAlgorithm MD5 = System.Security.Cryptography.
HashAlgorithm.
Create(
"MD5");
Buffer = System.Text.
Encoding.
GetEncoding(
"GB2312").
GetBytes(strSource);
HashData = MD5.
ComputeHash(Buffer);
strHashData =
Convert.
ToBase64String(HashData);
return
true;
}
catch (
Exception ex)
{
throw ex;
}
}
/// <summary>
/// 获取Hash描述表
/// </summary>
/// <param name="objFile">待签名的文件</param>
/// <param name="HashData">Hash描述</param>
/// <returns></returns>
public
bool
GetHash(System.IO.
FileStream objFile,
ref
byte[] HashData)
{
try
{
//从文件中取得Hash描述
System.Security.Cryptography.
HashAlgorithm MD5 = System.Security.Cryptography.
HashAlgorithm.
Create(
"MD5");
HashData = MD5.
ComputeHash(objFile);
objFile.
Close();
return
true;
}
catch (
Exception ex)
{
throw ex;
}
}
/// <summary>
/// 获取Hash描述表
/// </summary>
/// <param name="objFile">待签名的文件</param>
/// <param name="strHashData">Hash描述</param>
/// <returns></returns>
public
bool
GetHash(System.IO.
FileStream objFile,
ref
string strHashData)
{
try
{
//从文件中取得Hash描述
byte[] HashData;
System.Security.Cryptography.
HashAlgorithm MD5 = System.Security.Cryptography.
HashAlgorithm.
Create(
"MD5");
HashData = MD5.
ComputeHash(objFile);
objFile.
Close();
strHashData =
Convert.
ToBase64String(HashData);
return
true;
}
catch (
Exception ex)
{
throw ex;
}
}
#endregion
/// <summary>
/// 对MD5加密后的长度为32的密文进行签名
/// </summary>
/// <param name="strPrivateKey">私钥</param>
/// <param name="strContent">MD5加密后的密文</param>
/// <returns></returns>
string
SignatureFormatter(
string strPrivateKey,
string strContent)
{
byte[] btContent =
Encoding.UTF8.
GetBytes(strContent);
byte[] hv =
MD5.
Create().
ComputeHash(btContent);
RSACryptoServiceProvider rsp =
new
RSACryptoServiceProvider();
rsp.
FromXmlString(strPrivateKey);
RSAPKCS1SignatureFormatter rf =
new
RSAPKCS1SignatureFormatter(rsp);
rf.
SetHashAlgorithm(
"MD5");
byte[] signature = rf.
CreateSignature(hv);
return
Convert.
ToBase64String(signature);
}
#region RSA签名
/// <summary>
/// RSA签名
/// </summary>
/// <param name="strKeyPrivate">私钥</param>
/// <param name="HashbyteSignature">待签名Hash描述</param>
/// <param name="EncryptedSignatureData">签名后的结果</param>
/// <returns></returns>
public
bool
SignatureFormatter(
string strKeyPrivate,
byte[] HashbyteSignature,
ref
byte[] EncryptedSignatureData)
{
try
{
System.Security.Cryptography.
RSACryptoServiceProvider RSA =
new System.Security.Cryptography.
RSACryptoServiceProvider();
RSA.
FromXmlString(strKeyPrivate);
System.Security.Cryptography.
RSAPKCS1SignatureFormatter RSAFormatter =
new System.Security.Cryptography.
RSAPKCS1SignatureFormatter
(RSA);
//设置签名的算法为MD5
RSAFormatter.
SetHashAlgorithm(
"MD5");
//执行签名
EncryptedSignatureData = RSAFormatter.
CreateSignature(HashbyteSignature);
return
true;
}
catch (
Exception ex)
{
throw ex;
}
}
/// <summary>
/// RSA签名
/// </summary>
/// <param name="strKeyPrivate">私钥</param>
/// <param name="HashbyteSignature">待签名Hash描述</param>
/// <param name="m_strEncryptedSignatureData">签名后的结果</param>
/// <returns></returns>
public
bool
SignatureFormatter(
string strKeyPrivate,
byte[] HashbyteSignature,
ref
string strEncryptedSignatureData)
{
try
{
byte[] EncryptedSignatureData;
System.Security.Cryptography.
RSACryptoServiceProvider RSA =
new System.Security.Cryptography.
RSACryptoServiceProvider();
RSA.
FromXmlString(strKeyPrivate);
System.Security.Cryptography.
RSAPKCS1SignatureFormatter RSAFormatter =
new System.Security.Cryptography.
RSAPKCS1SignatureFormatter
(RSA);
//设置签名的算法为MD5
RSAFormatter.
SetHashAlgorithm(
"MD5");
//执行签名
EncryptedSignatureData = RSAFormatter.
CreateSignature(HashbyteSignature);
strEncryptedSignatureData =
Convert.
ToBase64String(EncryptedSignatureData);
return
true;
}
catch (
Exception ex)
{
throw ex;
}
}
/// <summary>
/// RSA签名
/// </summary>
/// <param name="strKeyPrivate">私钥</param>
/// <param name="strHashbyteSignature">待签名Hash描述</param>
/// <param name="EncryptedSignatureData">签名后的结果</param>
/// <returns></returns>
public
bool
SignatureFormatter(
string strKeyPrivate,
string strHashbyteSignature,
ref
byte[] EncryptedSignatureData)
{
try
{
byte[] HashbyteSignature;
HashbyteSignature =
Convert.
FromBase64String(strHashbyteSignature);
System.Security.Cryptography.
RSACryptoServiceProvider RSA =
new System.Security.Cryptography.
RSACryptoServiceProvider();
RSA.
FromXmlString(strKeyPrivate);
System.Security.Cryptography.
RSAPKCS1SignatureFormatter RSAFormatter =
new System.Security.Cryptography.
RSAPKCS1SignatureFormatter
(RSA);
//设置签名的算法为MD5
RSAFormatter.
SetHashAlgorithm(
"MD5");
//执行签名
EncryptedSignatureData = RSAFormatter.
CreateSignature(HashbyteSignature);
return
true;
}
catch (
Exception ex)
{
throw ex;
}
}
/// <summary>
/// RSA签名
/// </summary>
/// <param name="strKeyPrivate">私钥</param>
/// <param name="strHashbyteSignature">待签名Hash描述</param>
/// <param name="strEncryptedSignatureData">签名后的结果</param>
/// <returns></returns>
public
bool
SignatureFormatter(
string strKeyPrivate,
string strHashbyteSignature,
ref
string strEncryptedSignatureData)
{
try
{
byte[] HashbyteSignature;
byte[] EncryptedSignatureData;
HashbyteSignature =
Convert.
FromBase64String(strHashbyteSignature);
System.Security.Cryptography.
RSACryptoServiceProvider RSA =
new System.Security.Cryptography.
RSACryptoServiceProvider();
RSA.
FromXmlString(strKeyPrivate);
System.Security.Cryptography.
RSAPKCS1SignatureFormatter RSAFormatter =
new System.Security.Cryptography.
RSAPKCS1SignatureFormatter
(RSA);
//设置签名的算法为MD5
RSAFormatter.
SetHashAlgorithm(
"MD5");
//执行签名
EncryptedSignatureData = RSAFormatter.
CreateSignature(HashbyteSignature);
strEncryptedSignatureData =
Convert.
ToBase64String(EncryptedSignatureData);
return
true;
}
catch (
Exception ex)
{
throw ex;
}
}
#endregion
#region RSA 签名验证
/// <summary>
/// RSA签名验证
/// </summary>
/// <param name="strKeyPublic">公钥</param>
/// <param name="HashbyteDeformatter">Hash描述</param>
/// <param name="DeformatterData">签名后的结果</param>
/// <returns></returns>
public
bool
SignatureDeformatter(
string strKeyPublic,
byte[] HashbyteDeformatter,
byte[] DeformatterData)
{
try
{
System.Security.Cryptography.
RSACryptoServiceProvider RSA =
new System.Security.Cryptography.
RSACryptoServiceProvider();
RSA.
FromXmlString(strKeyPublic);
System.Security.Cryptography.
RSAPKCS1SignatureDeformatter RSADeformatter =
new
System.Security.Cryptography.
RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.
SetHashAlgorithm(
"MD5");
if (RSADeformatter.
VerifySignature(HashbyteDeformatter, DeformatterData))
{
return
true;
}
else
{
return
false;
}
}
catch (
Exception ex)
{
throw ex;
}
}
/// <summary>
/// RSA签名验证
/// </summary>
/// <param name="strKeyPublic">公钥</param>
/// <param name="strHashbyteDeformatter">Hash描述</param>
/// <param name="DeformatterData">签名后的结果</param>
/// <returns></returns>
public
bool
SignatureDeformatter(
string strKeyPublic,
string strHashbyteDeformatter,
byte[] DeformatterData)
{
try
{
byte[] HashbyteDeformatter;
HashbyteDeformatter =
Convert.
FromBase64String(strHashbyteDeformatter);
System.Security.Cryptography.
RSACryptoServiceProvider RSA =
new System.Security.Cryptography.
RSACryptoServiceProvider();
RSA.
FromXmlString(strKeyPublic);
System.Security.Cryptography.
RSAPKCS1SignatureDeformatter RSADeformatter =
new
System.Security.Cryptography.
RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.
SetHashAlgorithm(
"MD5");
if (RSADeformatter.
VerifySignature(HashbyteDeformatter, DeformatterData))
{
return
true;
}
else
{
return
false;
}
}
catch (
Exception ex)
{
throw ex;
}
}
/// <summary>
/// RSA签名验证
/// </summary>
/// <param name="strKeyPublic">公钥</param>
/// <param name="HashbyteDeformatter">Hash描述</param>
/// <param name="strDeformatterData">签名后的结果</param>
/// <returns></returns>
public
bool
SignatureDeformatter(
string strKeyPublic,
byte[] HashbyteDeformatter,
string strDeformatterData)
{
try
{
byte[] DeformatterData;
System.Security.Cryptography.
RSACryptoServiceProvider RSA =
new System.Security.Cryptography.
RSACryptoServiceProvider();
RSA.
FromXmlString(strKeyPublic);
System.Security.Cryptography.
RSAPKCS1SignatureDeformatter RSADeformatter =
new
System.Security.Cryptography.
RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.
SetHashAlgorithm(
"MD5");
DeformatterData =
Convert.
FromBase64String(strDeformatterData);
if (RSADeformatter.
VerifySignature(HashbyteDeformatter, DeformatterData))
{
return
true;
}
else
{
return
false;
}
}
catch (
Exception ex)
{
throw ex;
}
}
/// <summary>
/// RSA签名验证
/// </summary>
/// <param name="strKeyPublic">公钥</param>
/// <param name="strHashbyteDeformatter">Hash描述</param>
/// <param name="strDeformatterData">签名后的结果</param>
/// <returns></returns>
public
bool
SignatureDeformatter(
string strKeyPublic,
string strHashbyteDeformatter,
string strDeformatterData)
{
try
{
byte[] DeformatterData;
byte[] HashbyteDeformatter;
HashbyteDeformatter =
Convert.
FromBase64String(strHashbyteDeformatter);
System.Security.Cryptography.
RSACryptoServiceProvider RSA =
new System.Security.Cryptography.
RSACryptoServiceProvider();
RSA.
FromXmlString(strKeyPublic);
System.Security.Cryptography.
RSAPKCS1SignatureDeformatter RSADeformatter =
new
System.Security.Cryptography.
RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.
SetHashAlgorithm(
"MD5");
DeformatterData =
Convert.
FromBase64String(strDeformatterData);
if (RSADeformatter.
VerifySignature(HashbyteDeformatter, DeformatterData))
{
return
true;
}
else
{
return
false;
}
}
catch (
Exception ex)
{
throw ex;
}
}
#endregion
#endregion
}
}