C#自定义RSA加密解密及RSA签名和验证类实例
本文实例讲述了C#自定义RSA加密解密及RSA签名和验证类。分享给大家供大家参考。具体分析如下：
这个C#类自定义RSA加密解密及RSA签名和验证，包含了RSA加密、解密及签名所需的相关函数，带有详细的注释说明。
usingSystem;
usingSystem.Text;
usingSystem.Security.Cryptography;
namespaceDotNet.Utilities
{
///<summary>
///RSA加密解密及RSA签名和验证
///</summary>
publicclassRSACryption
{
publicRSACryption()
{
}
#regionRSA加密解密
#regionRSA的密钥产生
///<summary>
///RSA的密钥产生产生私钥和公钥
///</summary>
///<paramname="xmlKeys"></param>
///<paramname="xmlPublicKey"></param>
publicvoidRSAKey(outstringxmlKeys,outstringxmlPublicKey)
{
System.Security.Cryptography.RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();
xmlKeys=rsa.ToXmlString(true);
xmlPublicKey=rsa.ToXmlString(false);
}
#endregion
#regionRSA的加密函数
//##############################################################################
//RSA方式加密
//说明KEY必须是XML的行式,返回的是字符串
//在有一点需要说明！！该加密方式有长度限制的！！
//##############################################################################
//RSA的加密函数string
publicstringRSAEncrypt(stringxmlPublicKey,stringm_strEncryptString)
{
byte[]PlainTextBArray;
byte[]CypherTextBArray;
stringResult;
RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();
rsa.FromXmlString(xmlPublicKey);
PlainTextBArray=(newUnicodeEncoding()).GetBytes(m_strEncryptString);
CypherTextBArray=rsa.Encrypt(PlainTextBArray,false);
Result=Convert.ToBase64String(CypherTextBArray);
returnResult;
}
//RSA的加密函数byte[]
publicstringRSAEncrypt(stringxmlPublicKey,byte[]EncryptString)
{
byte[]CypherTextBArray;
stringResult;
RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();
rsa.FromXmlString(xmlPublicKey);
CypherTextBArray=rsa.Encrypt(EncryptString,false);
Result=Convert.ToBase64String(CypherTextBArray);
returnResult;
}
#endregion
#regionRSA的解密函数
//RSA的解密函数string
publicstringRSADecrypt(stringxmlPrivateKey,stringm_strDecryptString)
{
byte[]PlainTextBArray;
byte[]DypherTextBArray;
stringResult;
System.Security.Cryptography.RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();
rsa.FromXmlString(xmlPrivateKey);
PlainTextBArray=Convert.FromBase64String(m_strDecryptString);
DypherTextBArray=rsa.Decrypt(PlainTextBArray,false);
Result=(newUnicodeEncoding()).GetString(DypherTextBArray);
returnResult;
}
//RSA的解密函数byte
publicstringRSADecrypt(stringxmlPrivateKey,byte[]DecryptString)
{
byte[]DypherTextBArray;
stringResult;
System.Security.Cryptography.RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();
rsa.FromXmlString(xmlPrivateKey);
DypherTextBArray=rsa.Decrypt(DecryptString,false);
Result=(newUnicodeEncoding()).GetString(DypherTextBArray);
returnResult;
}
#endregion
#endregion
#regionRSA数字签名
#region获取Hash描述表
//获取Hash描述表，sharejs.com
publicboolGetHash(stringm_strSource,refbyte[]HashData)
{
//从字符串中取得Hash描述
byte[]Buffer;
System.Security.Cryptography.HashAlgorithmMD5=System.Security.Cryptography.HashAlgorithm.Create("MD5");
Buffer=System.Text.Encoding.GetEncoding("GB2312").GetBytes(m_strSource);
HashData=MD5.ComputeHash(Buffer);
returntrue;
}
//获取Hash描述表
publicboolGetHash(stringm_strSource,refstringstrHashData)
{
//从字符串中取得Hash描述
byte[]Buffer;
byte[]HashData;
System.Security.Cryptography.HashAlgorithmMD5=System.Security.Cryptography.HashAlgorithm.Create("MD5");
Buffer=System.Text.Encoding.GetEncoding("GB2312").GetBytes(m_strSource);
HashData=MD5.ComputeHash(Buffer);
strHashData=Convert.ToBase64String(HashData);
returntrue;
}
//获取Hash描述表
publicboolGetHash(System.IO.FileStreamobjFile,refbyte[]HashData)
{
//从文件中取得Hash描述
System.Security.Cryptography.HashAlgorithmMD5=System.Security.Cryptography.HashAlgorithm.Create("MD5");
HashData=MD5.ComputeHash(objFile);
objFile.Close();
returntrue;
}
//获取Hash描述表
publicboolGetHash(System.IO.FileStreamobjFile,refstringstrHashData)
{
//从文件中取得Hash描述
byte[]HashData;
System.Security.Cryptography.HashAlgorithmMD5=System.Security.Cryptography.HashAlgorithm.Create("MD5");
HashData=MD5.ComputeHash(objFile);
objFile.Close();
strHashData=Convert.ToBase64String(HashData);
returntrue;
}
#endregion
#regionRSA签名
//RSA签名
publicboolSignatureFormatter(stringp_strKeyPrivate,byte[]HashbyteSignature,refbyte[]EncryptedSignatureData)
{
System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPrivate);
System.Security.Cryptography.RSAPKCS1SignatureFormatterRSAFormatter=newSystem.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);
//设置签名的算法为MD5
RSAFormatter.SetHashAlgorithm("MD5");
//执行签名
EncryptedSignatureData=RSAFormatter.CreateSignature(HashbyteSignature);
returntrue;
}
//RSA签名
publicboolSignatureFormatter(stringp_strKeyPrivate,byte[]HashbyteSignature,refstringm_strEncryptedSignatureData)
{
byte[]EncryptedSignatureData;
System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPrivate);
System.Security.Cryptography.RSAPKCS1SignatureFormatterRSAFormatter=newSystem.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);
//设置签名的算法为MD5
RSAFormatter.SetHashAlgorithm("MD5");
//执行签名
EncryptedSignatureData=RSAFormatter.CreateSignature(HashbyteSignature);
m_strEncryptedSignatureData=Convert.ToBase64String(EncryptedSignatureData);
returntrue;
}
//RSA签名
publicboolSignatureFormatter(stringp_strKeyPrivate,stringm_strHashbyteSignature,refbyte[]EncryptedSignatureData)
{
byte[]HashbyteSignature;
HashbyteSignature=Convert.FromBase64String(m_strHashbyteSignature);
System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPrivate);
System.Security.Cryptography.RSAPKCS1SignatureFormatterRSAFormatter=newSystem.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);
//设置签名的算法为MD5
RSAFormatter.SetHashAlgorithm("MD5");
//执行签名
EncryptedSignatureData=RSAFormatter.CreateSignature(HashbyteSignature);
returntrue;
}
//RSA签名
publicboolSignatureFormatter(stringp_strKeyPrivate,stringm_strHashbyteSignature,refstringm_strEncryptedSignatureData)
{
byte[]HashbyteSignature;
byte[]EncryptedSignatureData;
HashbyteSignature=Convert.FromBase64String(m_strHashbyteSignature);
System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPrivate);
System.Security.Cryptography.RSAPKCS1SignatureFormatterRSAFormatter=newSystem.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);
//设置签名的算法为MD5
RSAFormatter.SetHashAlgorithm("MD5");
//执行签名
EncryptedSignatureData=RSAFormatter.CreateSignature(HashbyteSignature);
m_strEncryptedSignatureData=Convert.ToBase64String(EncryptedSignatureData);
returntrue;
}
#endregion
#regionRSA签名验证
publicboolSignatureDeformatter(stringp_strKeyPublic,byte[]HashbyteDeformatter,byte[]DeformatterData)
{
System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatterRSADeformatter=newSystem.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("MD5");
if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))
{
returntrue;
}
else
{
returnfalse;
}
}
publicboolSignatureDeformatter(stringp_strKeyPublic,stringp_strHashbyteDeformatter,byte[]DeformatterData)
{
byte[]HashbyteDeformatter;
HashbyteDeformatter=Convert.FromBase64String(p_strHashbyteDeformatter);
System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatterRSADeformatter=newSystem.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("MD5");
if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))
{
returntrue;
}
else
{
returnfalse;
}
}
publicboolSignatureDeformatter(stringp_strKeyPublic,byte[]HashbyteDeformatter,stringp_strDeformatterData)
{
byte[]DeformatterData;
System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatterRSADeformatter=newSystem.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("MD5");
DeformatterData=Convert.FromBase64String(p_strDeformatterData);
if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))
{
returntrue;
}
else
{
returnfalse;
}
}
publicboolSignatureDeformatter(stringp_strKeyPublic,stringp_strHashbyteDeformatter,stringp_strDeformatterData)
{
byte[]DeformatterData;
byte[]HashbyteDeformatter;
HashbyteDeformatter=Convert.FromBase64String(p_strHashbyteDeformatter);
System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatterRSADeformatter=newSystem.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("MD5");
DeformatterData=Convert.FromBase64String(p_strDeformatterData);
if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))
{
returntrue;
}
else
{
returnfalse;
}
}
#endregion
#endregion
}
}
希望本文所述对大家的C#程序设计有所帮助。