.net用BouncyCastle进行签名&加解密

来源：互联网发布：淘宝怎么分享不了编辑：程序博客网时间：2024/05/17 01:31

http://www.bouncycastle.org/csharp/index.html

下载bin的zip文件。

工程添加引用“BouncyCastle.Crypto.dll”

代码添加引用：

using Org.BouncyCastle.Pkcs;
using Org.BouncyCastle.X509;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.Crypto.Parameters;

签名&读证书序列号：

            FileStream fileStream = null;            try            {                fileStream = new FileStream(certPath, FileMode.Open);                Pkcs12Store store = new Pkcs12Store(fileStream, certPwd.ToCharArray());                string pName = null;                foreach (string n in store.Aliases)                {                    if (store.IsKeyEntry(n))                    {                        pName = n;                        //break;                    }                }                Cert signCert = new Cert();                AsymmetricKeyParameter key = store.GetKey(pName).Key;                X509CertificateEntry[] chain = store.GetCertificateChain(pName);                X509Certificate cert = chain[0].Certificate;                string certId = cert.SerialNumber.ToString(); //证书序列号                ISigner normalSig = SignerUtilities.GetSigner("SHA1WithRSA");                normalSig.Init(true, key);                normalSig.BlockUpdate(data, 0, data.Length);                byte[] normalResult = normalSig.GenerateSignature(); //签名结果                                        }            finally            {                if (fileStream != null)                    fileStream.Close();            }

验签&读证书序列号：

                FileStream fileStream = null;                try                {                    fileStream = new FileStream(file.DirectoryName + "\\" + file.Name, FileMode.Open);                    X509Certificate certificate = new X509CertificateParser().ReadCertificate(fileStream);                    string certId = certificate.SerialNumber.ToString(); //证书序列号                    AsymmetricKeyParameter key = certificate.GetPublicKey();                    ISigner verifier = SignerUtilities.GetSigner("SHA1WithRSA");                    verifier.Init(false, key);                    verifier.BlockUpdate(srcByte, 0, srcByte.Length);                    return verifier.VerifySignature(signature); //验签结果                }                finally                {                    if(fileStream != null)                        fileStream.Close();                }

加密：

                FileStream fileStream = null;                try                {                    fileStream = new FileStream(file.DirectoryName + "\\" + file.Name, FileMode.Open);                    X509Certificate certificate = new X509CertificateParser().ReadCertificate(fileStream);                    string certId = certificate.SerialNumber.ToString(); //证书序列号                    AsymmetricKeyParameter key = certificate.GetPublicKey();                    IBufferedCipher c = CipherUtilities.GetCipher("RSA/NONE/PKCS1Padding");                    c.Init(true, new ParametersWithRandom(key, new SecureRandom()));                    return c.DoFinal(dataToBeEnc); //加密结果                }                finally                {                    if(fileStream != null)                        fileStream.Close();                }

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