标签:验证 public signer ----- 签名 signature var using ECDSA
using System; using System.IO; using System.Text; using Org.BouncyCastle.Crypto; using Org.BouncyCastle.OpenSsl; using Org.BouncyCastle.Security; using Org.BouncyCastle.X509; namespace security_sandbox { class Program { static void Main(string[] args) { var certificateString = @"-----BEGIN CERTIFICATE----- MIIB4TCCAYegAwIBAgIUKt0WdaKI2eRXBO2nVk+OF6AZqHMwCgYIKoZIzj0EAwIw RTELMAkGA1UEBhMCQVUxEzARBgNVBAgMClNvbWUtU3RhdGUxITAfBgNVBAoMGElu dGVybmV0IFdpZGdpdHMgUHR5IEx0ZDAgFw0yMDA1MDcxMzM2MTNaGA8yMTIwMDQx MzEzMzYxM1owRTELMAkGA1UEBhMCQVUxEzARBgNVBAgMClNvbWUtU3RhdGUxITAf BgNVBAoMGEludGVybmV0IFdpZGdpdHMgUHR5IEx0ZDBZMBMGByqGSM49AgEGCCqG SM49AwEHA0IABO39ccEC+Zv1HDeMy/s7JculdYN/8DXC+U3Qn1rdF351H4NMfkbC H9bnqwZ4a5oR9HDfaNMX14OQd4VERZV1bhGjUzBRMB0GA1UdDgQWBBRGuUmsyB2h JCXMRTVMRTcdoWZQaDAfBgNVHSMEGDAWgBRGuUmsyB2hJCXMRTVMRTcdoWZQaDAP BgNVHRMBAf8EBTADAQH/MAoGCCqGSM49BAMCA0gAMEUCIGG8tQZlh7aJaI34Y7jq 44SmSc/ule9MgjIX+Gg+i5vwAiEA9Jb/304KO4t9OMqFMQeWZXIHdzhDFBwx7FWz 78+UsnY= -----END CERTIFICATE-----"; var pemreader = new PemReader(new StringReader(certificateString)); var cert = (X509Certificate)pemreader.ReadObject(); // Alternatively, load the public key directly var pubkeyString = @"-----BEGIN PUBLIC KEY----- MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE7f1xwQL5m/UcN4zL+zsly6V1g3/w NcL5TdCfWt0XfnUfg0x+RsIf1uerBnhrmhH0cN9o0xfXg5B3hURFlXVuEQ== -----END PUBLIC KEY-----"; pemreader = new PemReader(new StringReader(pubkeyString)); var pubkey = (AsymmetricKeyParameter)pemreader.ReadObject(); var data = "Hello"; var signature = Convert.FromBase64String("MEUCIQD5593C/NBhHA1DILT72gjhGj/lKjom9vYP+JbuypBrxQIgNAjYT1LihEpPbUhe1n9ccUHQvw676bGqOTEU/25qcRQ="); // Verify using the public key var signer = SignerUtilities.GetSigner("SHA-256withECDSA"); signer.Init(false, pubkey); signer.BlockUpdate(Encoding.ASCII.GetBytes(data), 0, data.Length); var success = signer.VerifySignature(signature); if (success) { Console.WriteLine("Signature verified successfully using public key"); } else { Console.WriteLine("Failed to verify signature using public key"); } // Verify using the certificate - the certificate's public key is extracted using the GetPublicKey method. signer.Init(false, cert.GetPublicKey()); signer.BlockUpdate(Encoding.ASCII.GetBytes(data), 0, data.Length); success = signer.VerifySignature(signature); if (success) { Console.WriteLine("Signature verified successfully using certificate"); } else { Console.WriteLine("Failed to verify signature using certificate"); } } } }
标签:验证,public,signer,-----,签名,signature,var,using,ECDSA 来源: https://www.cnblogs.com/darkif/p/16502884.html
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