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33 lines
1.1 KiB
33 lines
1.1 KiB
using System.Security.Cryptography;
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using com.hitrust.b2b.trustpay.client;
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using System;
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using System.Text;
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using System.Security.Cryptography.X509Certificates;
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namespace com.hitrust.b2b.Security
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{
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public class Signature
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{
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public int verifySignature(string aCertFile, string aMessage, string aBase64Signature)
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{
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X509Certificate certificate;
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int num = 0;
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try {
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certificate = X509Certificate.CreateFromCertFile(aCertFile);
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byte[] rgbSignature = new Base64().decode(aBase64Signature);
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byte[] rgbHash = new SHA1Managed().ComputeHash(Encoding.GetEncoding("UTF-8").GetBytes(aMessage));
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//certificate.PublicKey.ExportParameters(false);
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RSACryptoServiceProvider publicKey = new RSACryptoServiceProvider();
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publicKey.ImportParameters(new RSAParameters() { Exponent = certificate.GetPublicKey() });
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if (!publicKey.VerifyHash(rgbHash, CryptoConfig.MapNameToOID("SHA1"), rgbSignature)) {
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num = -1;
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}
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} catch (Exception exception) {
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SupportClass.WriteStackTrace(exception, Console.Out);
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num = 1;
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}
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return num;
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}
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}
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}
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