RSA加密解密及RSA簽名和驗證

RSA加密解密及RSA簽名和驗證1.RSA加密解密：(1)獲取密鑰，這?是產(chǎn)?密鑰，實際應?中可以從各種存儲介質(zhì)上讀取密鑰(2)加密(3)解密2.RSA簽名和驗證(1)獲取密鑰，這?是產(chǎn)?密鑰，實際應?中可以從各種存儲介質(zhì)上讀取密鑰(2)獲取待簽名的Hash碼(3)獲取簽名的字符串(4)驗證3.公鑰與私鑰的理解：(1)私鑰?來進?解密和簽名，是給???的。(2)公鑰由本?公開，?于加密和驗證簽名，是給別??的。(3)當該?戶發(fā)送?件時，?私鑰簽名，別??他給的公鑰驗證簽名，可以保證該信息是由他發(fā)送的。當該?戶接受?件時，別??他的公鑰加密，他?私鑰解密，可以保證該信息只能由他接收到。classRSACryption{#regionRSA加密解密#regionRSA的密鑰產(chǎn)?///<summary>///RSA產(chǎn)?密鑰///</summary>///<paramname="xmlKeys">私鑰</param>///<paramname="xmlPublicKey">公鑰</param>publicvoidRSAKey(outstringxmlKeys,outstringxmlPublicKey){try{System.Security.Cryptography.RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();xmlKeys=rsa.ToXmlString(true);xmlPublicKey=rsa.ToXmlString(false);}catch(Exceptionex){throwex;}}#endregion#regionRSA加密函數(shù)//##############################################################################//RSA?式加密//KEY必須是XML的形式,返回的是字符串//該加密?式有長度限制的！//##############################################################################///<summary>///RSA的加密函數(shù)///</summary>///<paramname="xmlPublicKey">公鑰</param>///<paramname="encryptString">待加密的字符串</param>///<returns></returns>publicstringRSAEncrypt(stringxmlPublicKey,stringencryptString){try{byte[]PlainTextBArray;byte[]CypherTextBArray;stringResult;System.Security.Cryptography.RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();rsa.FromXmlString(xmlPublicKey);PlainTextBArray=(newUnicodeEncoding()).GetBytes(encryptString);CypherTextBArray=rsa.Encrypt(PlainTextBArray,false);Result=Convert.ToBase64String(CypherTextBArray);returnResult;}catch(Exceptionex){throwex;}}///<summary>///RSA的加密函數(shù)///</summary>///<paramname="xmlPublicKey">公鑰</param>///<paramname="EncryptString">待加密的字節(jié)數(shù)組</param>///<returns></returns>publicstringRSAEncrypt(stringxmlPublicKey,byte[]EncryptString){try{byte[]CypherTextBArray;stringResult;System.Security.Cryptography.RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();rsa.FromXmlString(xmlPublicKey);CypherTextBArray=rsa.Encrypt(EncryptString,false);Result=Convert.ToBase64String(CypherTextBArray);returnResult;}catch(Exceptionex){throwex;}}#endregion#regionRSA的解密函數(shù)///<summary>///RSA的解密函數(shù)///</summary>///<paramname="xmlPrivateKey">私鑰</param>///<paramname="decryptString">待解密的字符串</param>///<returns></returns>publicstringRSADecrypt(stringxmlPrivateKey,stringdecryptString){try{byte[]PlainTextBArray;byte[]DypherTextBArray;stringResult;System.Security.Cryptography.RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();rsa.FromXmlString(xmlPrivateKey);PlainTextBArray=Convert.FromBase64String(decryptString);DypherTextBArray=rsa.Decrypt(PlainTextBArray,false);Result=(newUnicodeEncoding()).GetString(DypherTextBArray);returnResult;}catch(Exceptionex){throwex;}}///<summary>///RSA的解密函數(shù)///</summary>///<paramname="xmlPrivateKey">私鑰</param>///<paramname="DecryptString">待解密的字節(jié)數(shù)組</param>///<returns></returns>publicstringRSADecrypt(stringxmlPrivateKey,byte[]DecryptString){try{byte[]DypherTextBArray;stringResult;System.Security.Cryptography.RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();rsa.FromXmlString(xmlPrivateKey);DypherTextBArray=rsa.Decrypt(DecryptString,false);Result=(newUnicodeEncoding()).GetString(DypherTextBArray);returnResult;}catch(Exceptionex){throwex;}}#endregion#endregion#regionRSA數(shù)字簽名#region獲取Hash描述表///<summary>///獲取Hash描述表///</summary>///<paramname="strSource">待簽名的字符串</param>///<paramname="HashData">Hash描述</param>///<returns></returns>publicboolGetHash(stringstrSource,refbyte[]HashData){try{byte[]Buffer;System.Security.Cryptography.HashAlgorithmMD5=System.Security.Cryptography.HashAlgorithm.Create("MD5");System.Text.Encoding.GetEncoding("GB2312").GetBytes(strSource);Buffer=HashData=MD5.ComputeHash(Buffer);returntrue;}catch(Exceptionex){throwex;}}///<summary>///獲取Hash描述表///</summary>///<paramname="strSource">待簽名的字符串</param>///<paramname="strHashData">Hash描述</param>///<returns></returns>publicboolGetHash(stringstrSource,refstringstrHashData){try{//從字符串中取得Hash描述byte[]Buffer;byte[]HashData;System.Security.Cryptography.HashAlgorithmMD5=System.Security.Cryptography.HashAlgorithm.Create("MD5");System.Text.Encoding.GetEncoding("GB2312").GetBytes(strSource);Buffer=HashData=MD5.ComputeHash(Buffer);strHashData=Convert.ToBase64String(HashData);returntrue;}catch(Exceptionex){throwex;}}///<summary>///獲取Hash描述表///</summary>///<paramname="objFile">待簽名的?件</param>///<paramname="HashData">Hash描述</param>///<returns></returns>publicboolGetHash(System.IO.FileStreamobjFile,refbyte[]HashData){try{//從?件中取得Hash描述System.Security.Cryptography.HashAlgorithmMD5=System.Security.Cryptography.HashAlgorithm.Create("MD5");HashData=MD5.ComputeHash(objFile);objFile.Close();returntrue;}catch(Exceptionex){throwex;}}///<summary>///獲取Hash描述表///</summary>///<paramname="objFile">待簽名的?件</param>///<paramname="strHashData">Hash描述</param>///<returns></returns>publicboolGetHash(System.IO.FileStreamobjFile,refstringstrHashData){try{//從?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;}catch(Exceptionex){throwex;}}#endregion#regionRSA簽名///<summary>///RSA簽名///<paramname="strKeyPrivate">私鑰</param>///<paramname="HashbyteSignature">待簽名Hash描述</param>///<paramname="EncryptedSignatureData">簽名后的結(jié)果</param>///<returns></returns>publicboolSignatureFormatter(stringstrKeyPrivate,byte[]HashbyteSignature,refbyte[]EncryptedSignatureData){try{System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();RSA.FromXmlString(strKeyPrivate);System.Security.Cryptography.RSAPKCS1SignatureFormatterRSAFormatter=newSystem.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);//設(shè)置簽名的算法為MD5RSAFormatter.SetHashAlgorithm("MD5");//執(zhí)?簽名EncryptedSignatureData=RSAFormatter.CreateSignature(HashbyteSignature);returntrue;}catch(Exceptionex){throwex;}}///<summary>///RSA簽名///</summary>///<paramname="strKeyPrivate">私鑰</param>///<paramname="HashbyteSignature">待簽名Hash描述</param>///<paramname="m_strEncryptedSignatureData">簽名后的結(jié)果</param>///<returns></returns>publicboolSignatureFormatter(stringstrKeyPrivate,byte[]HashbyteSignature,refstringstrEncryptedSignatureData){try{byte[]EncryptedSignatureData;System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();RSA.FromXmlString(strKeyPrivate);System.Security.Cryptography.RSAPKCS1SignatureFormatterRSAFormatter=newSystem.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);//設(shè)置簽名的算法為MD5RSAFormatter.SetHashAlgorithm("MD5");//執(zhí)?簽名EncryptedSignatureData=RSAFormatter.CreateSignature(HashbyteSignature);strEncryptedSignatureData=Convert.ToBase64String(EncryptedSignatureData);returntrue;}catch(Exceptionex){throwex;}}///<summary>///RSA簽名///</summary>///<paramname="strKeyPrivate">私鑰</param>///<paramname="strHashbyteSignature">待簽名Hash描述</param>///<paramname="EncryptedSignatureData">簽名后的結(jié)果</param>///<returns></returns>publicboolSignatureFormatter(stringstrKeyPrivate,stringstrHashbyteSignature,refbyte[]EncryptedSignatureData){try{byte[]HashbyteSignature;HashbyteSignature=Convert.FromBase64String(strHashbyteSignature);System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();RSA.FromXmlString(strKeyPrivate);System.Security.Cryptography.RSAPKCS1SignatureFormatterRSAFormatter=newSystem.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);//設(shè)置簽名的算法為MD5RSAFormatter.SetHashAlgorithm("MD5");//執(zhí)?簽名EncryptedSignatureData=RSAFormatter.CreateSignature(HashbyteSignature);returntrue;}catch(Exceptionex){throwex;}}///RSA簽名///</summary>///<paramname="strKeyPrivate">私鑰</param>///<paramname="strHashbyteSignature">待簽名Hash描述</param>///<paramname="strEncryptedSignatureData">簽名后的結(jié)果</param>///<returns></returns>publicboolSignatureFormatter(stringstrKeyPrivate,stringstrHashbyteSignature,refstringstrEncryptedSignatureData){try{byte[]HashbyteSignature;byte[]EncryptedSignatureData;HashbyteSignature=Convert.FromBase64String(strHashbyteSignature);System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();RSA.FromXmlString(strKeyPrivate);System.Security.Cryptography.RSAPKCS1SignatureFormatterRSAFormatter=newSystem.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);//設(shè)置簽名的算法為MD5RSAFormatter.SetHashAlgorithm("MD5");//執(zhí)?簽名EncryptedSignatureData=RSAFormatter.CreateSignature(HashbyteSignature);strEncryptedSignatureData=Convert.ToBase64String(EncryptedSignatureData);returntrue;}catch(Exceptionex){throwex;}}#endregion#regionRSA簽名驗證///<summary>///RSA簽名驗證///</summary>///<paramname="strKeyPublic">公鑰</param>///<paramname="HashbyteDeformatter">Hash描述</param>///<paramname="DeformatterData">簽名后的結(jié)果</param>///<returns></returns>publicboolSignatureDeformatter(stringstrKeyPublic,byte[]HashbyteDeformatter,byte[]DeformatterData){try{System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();RSA.FromXmlString(strKeyPublic);System.Security.Cryptography.RSAPKCS1SignatureDeformatterRSADeformatter=newSystem.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);//指定解密的時候HASH算法為MD5RSADeformatter.SetHashAlgorithm("MD5");if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData)){returntrue;}else{returnfalse;}}catch(Exceptionex){throwex;}}///<summary>///RSA簽名驗證///</summary>///<paramname="strKeyPublic">公鑰</param>///<paramname="strHashbyteDeformatter">Hash描述</param>///<paramname="DeformatterData">簽名后的結(jié)果</param>///<returns></returns>publicboolSignatureDeformatter(stringstrKeyPublic,stringstrHashbyteDeformatter,byte[]DeformatterData){try{byte[]HashbyteDeformatter;HashbyteDeformatter=Convert.FromBase64String(strHashbyteDeformatter);System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();RSA.FromXmlString(strKeyPublic);System.Security.Cryptography.RSAPKCS1SignatureDeformatterRSADeformatter=newSystem.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);//指定解密的時候HASH算法為MD5RSADeformatter.SetHashAlgorithm("MD5");if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData)){returntrue;}else{returnfalse;}}catch(Exceptionex){throwex;}}///<summary>///RSA簽名驗證///</summary>///<paramname="strKeyPublic">公鑰</param>///<paramname="HashbyteDeformatter">Hash描述</param>///<paramname="strDeformatterData">簽名后的結(jié)果</param>///<returns></returns>publicboolSignatureDeformatter(stringstrKeyPublic,byte[]HashbyteDeformatter,stringstrDeformatterData){try{byte[]DeformatterData;System.Security.Cryptography.RSACryptoServiceProviderRSA=newSystem.Security.Cryptography.RSACryptoServiceProvider();RSA.FromXmlString(strKeyPublic);System.Security.Cryptography.RSAPKCS1SignatureDeformatterRSADeformatter=newSystem.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);//指定解密的時候HASH算法為MD5RSADef