顧客から、SSLとInternet Explorerの問題について通知を受けました。彼らは、URLにアクセスするときに信頼の問題が発生すると言いました。
HTTPS経由でJSONにアクセスしています。 Webサイトは1つのサーバー上にあり、ローカルコンピューターでコンソールアプリを使用しています。 SSL証明書をバイパスしようとしていますが、コードはまだ失敗します。
この問題を修正するためにHttpWebRequestを変更できますか?
私はこのコードを使用してこのエラーを受け取ります:
// You must change the URL to point to your Web server.
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "GET";
req.AllowAutoRedirect = true;
// allows for validation of SSL conversations
ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
WebResponse respon = req.GetResponse();
Stream res = respon.GetResponseStream();
string ret = "";
byte[] buffer = new byte[1048];
int read = 0;
while ((read = res.Read(buffer, 0, buffer.Length)) > 0)
{
//Console.Write(Encoding.ASCII.GetString(buffer, 0, read));
ret += Encoding.ASCII.GetString(buffer, 0, read);
}
return ret;
このコードを使用してロギングを有効にしました:
http://blogs.msdn.com/b/dgorti/archive/2005/09/18/471003.aspx
ログはbin/debugフォルダーにありました(コンソールアプリのデバッグモードでした)。セキュリティプロトコルタイプをSSL 3として追加する必要があります
ログでアルゴリズムの不一致を受け取りました。これが私の新しいコードです。
// You must change the URL to point to your Web server.
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "GET";
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;
// Skip validation of SSL/TLS certificate
ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
WebResponse respon = req.GetResponse();
Stream res = respon.GetResponseStream();
string ret = "";
byte[] buffer = new byte[1048];
int read = 0;
while ((read = res.Read(buffer, 0, buffer.Length)) > 0)
{
Console.Write(Encoding.ASCII.GetString(buffer, 0, read));
ret += Encoding.ASCII.GetString(buffer, 0, read);
}
return ret;
この問題を解決するには、他のセキュリティプロトコルバージョンを有効にする必要がありました。
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls
| SecurityProtocolType.Tls11
| SecurityProtocolType.Tls12
| SecurityProtocolType.Ssl3;
既存の回答 に似ていますが、PowerShellの場合:
[System.Net.ServicePointManager]::SecurityProtocol = `
[System.Net.SecurityProtocolType]::Tls11 -bor
[System.Net.SecurityProtocolType]::Tls12 -bor `
[System.Net.SecurityProtocolType]::Tls -bor `
[System.Net.SecurityProtocolType]::Ssl3
次に、Invoke-WebRequestの呼び出しが機能するはずです。
匿名のフィードバックからこれを得た、良い提案:これを書く簡単な方法は次のようになります:
[System.Net.ServicePointManager]::SecurityProtocol = @("Tls12","Tls11","Tls","Ssl3")
Jaykulによるこの素晴らしい関連記事を見つけてください。 。NetおよびPowerShellからの自己署名証明書の検証
これは、いくつかの原因で発生する可能性があります(最も可能性が低いと思われる)。
サーバーのSSL証明書は、クライアントによって信頼されていません。最も簡単なチェックは、ブラウザでURLを指定し、SSLロックアイコンが表示されるかどうかを確認することです。壊れたロック、アイコンが表示されたら、それをクリックして問題の内容を確認します。
サーバーはクライアントSSL証明書を要求しています-この場合、クライアント証明書でリクエストに署名するにはコードを更新する必要があります。
下のリンクを一度ご覧ください。 SecurityProtocolType.SsL3は古いです。
証明書の種類も関係していることがわかりました。
私は次のような証明書を持っていました:
(以下の出力はmmc、証明書のプロパティでした)
デジタル署名、キー暗号化(a0)
(以下の出力は、以下の私のC#コードからのものです)
X509KeyUsageExtension.KeyUsages = 'KeyEncipherment、DigitalSignature'X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.CrlSign = 'False' X509KeyUsageExtension.KeyUsages.X509KeyUsageFageUsageFageUsageFageUsageFagesageFagesageFagesageFageageKeys .DecipherOnly = 'False' X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.DigitalSignature = 'True' X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.EncipherOnly = 'False' X509KeyUsageFageageKeyKeys 'X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.KeyCertSign =' False 'X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.KeyEncipherment ='True 'X509KeyUsageExtension.KeyUsage.XUsageUsageUsage。 X509KeyUsageFlags.NonRepudiation = 'False'
上記はnotでした。
===============================
次に、別の証明書:
(以下の出力はmmc、証明書のプロパティでした)
証明書署名、オフラインCRL署名、CRL署名(06)
(以下の出力は、以下の私のC#コードからのものです)
X509Extension.X509KeyUsageExtension.KeyUsages = 'CrlSign、KeyCertSign'X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.CrlSign = 'True' X509KeyUsageExtension.KeyUsages.KeyUsages.KeyUsages.KeyUsages。 X509KeyUsageFlags.DataEncipherment = '偽' X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.DecipherOnly = '偽' X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.DigitalSignature = '偽' X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.EncipherOnly = '偽' X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.KeyAgreement = '偽「X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.KeyCertSign =」True」 X509KeyUsageFlags.NonRepudiation = 'False'
そしてそれdid work
以下のコードを使用すると、クライアント証明書を検査できます
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Text;
namespace MyNamespace
{
public static class SecurityShower
{
public static void ShowHttpWebRequest(System.Net.HttpWebRequest hwr)
{
StringBuilder sb = new StringBuilder();
if (null != hwr)
{
sb.Append("-----------------------------------------------HttpWebRequest" + System.Environment.NewLine);
sb.Append(string.Format("HttpWebRequest.Address.AbsolutePath='{0}'", hwr.Address.AbsolutePath) + System.Environment.NewLine);
sb.Append(string.Format("HttpWebRequest.Address.AbsoluteUri='{0}'", hwr.Address.AbsoluteUri) + System.Environment.NewLine);
sb.Append(string.Format("HttpWebRequest.Address='{0}'", hwr.Address) + System.Environment.NewLine);
sb.Append(string.Format("HttpWebRequest.RequestUri.AbsolutePath='{0}'", hwr.RequestUri.AbsolutePath) + System.Environment.NewLine);
sb.Append(string.Format("HttpWebRequest.RequestUri.AbsoluteUri='{0}'", hwr.RequestUri.AbsoluteUri) + System.Environment.NewLine);
sb.Append(string.Format("HttpWebRequest.RequestUri='{0}'", hwr.RequestUri) + System.Environment.NewLine);
foreach (X509Certificate cert in hwr.ClientCertificates)
{
sb.Append("START*************************************************");
ShowX509Certificate(sb, cert);
sb.Append("END*************************************************");
}
}
string result = sb.ToString();
Console.WriteLine(result);
}
public static void ShowCertAndChain(X509Certificate2 cert)
{
X509Chain chain = new X509Chain();
chain.ChainPolicy.RevocationFlag = X509RevocationFlag.EntireChain;
chain.ChainPolicy.RevocationMode = X509RevocationMode.Offline;
chain.ChainPolicy.VerificationFlags = X509VerificationFlags.AllFlags;
////chain.ChainPolicy.VerificationFlags = X509VerificationFlags.IgnoreCtlSignerRevocationUnknown &&
////X509VerificationFlags.IgnoreRootRevocationUnknown &&
////X509VerificationFlags.IgnoreEndRevocationUnknown &&
////X509VerificationFlags.IgnoreCertificateAuthorityRevocationUnknown &&
////X509VerificationFlags.IgnoreCtlNotTimeValid;
chain.Build(cert);
ShowCertAndChain(cert, chain);
}
public static void ShowCertAndChain(X509Certificate cert, X509Chain chain)
{
StringBuilder sb = new StringBuilder();
if (null != cert)
{
ShowX509Certificate(sb, cert);
}
if (null != chain)
{
sb.Append("-X509Chain(Start)-" + System.Environment.NewLine);
////sb.Append(string.Format("Cert.ChainStatus='{0}'", string.Join(",", chain.ChainStatus.ToList())) + System.Environment.NewLine);
foreach (X509ChainStatus cstat in chain.ChainStatus)
{
sb.Append(string.Format("X509ChainStatus::'{0}'-'{1}'", cstat.Status.ToString(), cstat.StatusInformation) + System.Environment.NewLine);
}
X509ChainElementCollection ces = chain.ChainElements;
ShowX509ChainElementCollection(sb, ces);
sb.Append("-X509Chain(End)-" + System.Environment.NewLine);
}
string result = sb.ToString();
Console.WriteLine(result);
}
private static void ShowX509Extension(StringBuilder sb, int x509ExtensionCount, X509Extension ext)
{
sb.Append(string.Empty + System.Environment.NewLine);
sb.Append(string.Format("--------X509ExtensionNumber(Start):{0}", x509ExtensionCount) + System.Environment.NewLine);
sb.Append(string.Format("X509Extension.Critical='{0}'", ext.Critical) + System.Environment.NewLine);
AsnEncodedData asndata = new AsnEncodedData(ext.Oid, ext.RawData);
sb.Append(string.Format("Extension type: {0}", ext.Oid.FriendlyName) + System.Environment.NewLine);
sb.Append(string.Format("Oid value: {0}", asndata.Oid.Value) + System.Environment.NewLine);
sb.Append(string.Format("Raw data length: {0} {1}", asndata.RawData.Length, Environment.NewLine) + System.Environment.NewLine);
sb.Append(asndata.Format(true) + System.Environment.NewLine);
X509BasicConstraintsExtension basicEx = ext as X509BasicConstraintsExtension;
if (null != basicEx)
{
sb.Append("-X509BasicConstraintsExtension-" + System.Environment.NewLine);
sb.Append(string.Format("X509Extension.X509BasicConstraintsExtension.CertificateAuthority='{0}'", basicEx.CertificateAuthority) + System.Environment.NewLine);
}
X509EnhancedKeyUsageExtension keyEx = ext as X509EnhancedKeyUsageExtension;
if (null != keyEx)
{
sb.Append("-X509EnhancedKeyUsageExtension-" + System.Environment.NewLine);
sb.Append(string.Format("X509Extension.X509EnhancedKeyUsageExtension.EnhancedKeyUsages='{0}'", keyEx.EnhancedKeyUsages) + System.Environment.NewLine);
foreach (Oid oi in keyEx.EnhancedKeyUsages)
{
sb.Append(string.Format("------------EnhancedKeyUsages.Oid.FriendlyName='{0}'", oi.FriendlyName) + System.Environment.NewLine);
sb.Append(string.Format("------------EnhancedKeyUsages.Oid.Value='{0}'", oi.Value) + System.Environment.NewLine);
}
}
X509KeyUsageExtension usageEx = ext as X509KeyUsageExtension;
if (null != usageEx)
{
sb.Append("-X509KeyUsageExtension-" + System.Environment.NewLine);
sb.Append(string.Format("X509Extension.X509KeyUsageExtension.KeyUsages='{0}'", usageEx.KeyUsages) + System.Environment.NewLine);
sb.Append(string.Format("X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.CrlSign='{0}'", (usageEx.KeyUsages & X509KeyUsageFlags.CrlSign) != 0) + System.Environment.NewLine);
sb.Append(string.Format("X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.DataEncipherment='{0}'", (usageEx.KeyUsages & X509KeyUsageFlags.DataEncipherment) != 0) + System.Environment.NewLine);
sb.Append(string.Format("X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.DecipherOnly='{0}'", (usageEx.KeyUsages & X509KeyUsageFlags.DecipherOnly) != 0) + System.Environment.NewLine);
sb.Append(string.Format("X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.DigitalSignature='{0}'", (usageEx.KeyUsages & X509KeyUsageFlags.DigitalSignature) != 0) + System.Environment.NewLine);
sb.Append(string.Format("X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.EncipherOnly='{0}'", (usageEx.KeyUsages & X509KeyUsageFlags.EncipherOnly) != 0) + System.Environment.NewLine);
sb.Append(string.Format("X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.KeyAgreement='{0}'", (usageEx.KeyUsages & X509KeyUsageFlags.KeyAgreement) != 0) + System.Environment.NewLine);
sb.Append(string.Format("X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.KeyCertSign='{0}'", (usageEx.KeyUsages & X509KeyUsageFlags.KeyCertSign) != 0) + System.Environment.NewLine);
sb.Append(string.Format("X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.KeyEncipherment='{0}'", (usageEx.KeyUsages & X509KeyUsageFlags.KeyEncipherment) != 0) + System.Environment.NewLine);
sb.Append(string.Format("X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.None='{0}'", (usageEx.KeyUsages & X509KeyUsageFlags.None) != 0) + System.Environment.NewLine);
sb.Append(string.Format("X509KeyUsageExtension.KeyUsages.X509KeyUsageFlags.NonRepudiation='{0}'", (usageEx.KeyUsages & X509KeyUsageFlags.NonRepudiation) != 0) + System.Environment.NewLine);
}
X509SubjectKeyIdentifierExtension skIdEx = ext as X509SubjectKeyIdentifierExtension;
if (null != skIdEx)
{
sb.Append("-X509SubjectKeyIdentifierExtension-" + System.Environment.NewLine);
sb.Append(string.Format("X509Extension.X509SubjectKeyIdentifierExtension.Oid='{0}'", skIdEx.Oid) + System.Environment.NewLine);
sb.Append(string.Format("X509Extension.X509SubjectKeyIdentifierExtension.SubjectKeyIdentifier='{0}'", skIdEx.SubjectKeyIdentifier) + System.Environment.NewLine);
}
sb.Append(string.Format("--------X509ExtensionNumber(End):{0}", x509ExtensionCount) + System.Environment.NewLine);
}
private static void ShowX509Extensions(StringBuilder sb, string cert2SubjectName, X509ExtensionCollection extColl)
{
int x509ExtensionCount = 0;
sb.Append(string.Format("--------ShowX509Extensions(Start):for:{0}", cert2SubjectName) + System.Environment.NewLine);
foreach (X509Extension ext in extColl)
{
ShowX509Extension(sb, ++x509ExtensionCount, ext);
}
sb.Append(string.Format("--------ShowX509Extensions(End):for:{0}", cert2SubjectName) + System.Environment.NewLine);
}
private static void ShowX509Certificate2(StringBuilder sb, X509Certificate2 cert2)
{
if (null != cert2)
{
sb.Append(string.Format("X509Certificate2.SubjectName.Name='{0}'", cert2.SubjectName.Name) + System.Environment.NewLine);
sb.Append(string.Format("X509Certificate2.Subject='{0}'", cert2.Subject) + System.Environment.NewLine);
sb.Append(string.Format("X509Certificate2.Thumbprint='{0}'", cert2.Thumbprint) + System.Environment.NewLine);
sb.Append(string.Format("X509Certificate2.HasPrivateKey='{0}'", cert2.HasPrivateKey) + System.Environment.NewLine);
sb.Append(string.Format("X509Certificate2.Version='{0}'", cert2.Version) + System.Environment.NewLine);
sb.Append(string.Format("X509Certificate2.NotBefore='{0}'", cert2.NotBefore) + System.Environment.NewLine);
sb.Append(string.Format("X509Certificate2.NotAfter='{0}'", cert2.NotAfter) + System.Environment.NewLine);
sb.Append(string.Format("X509Certificate2.PublicKey.Key.KeySize='{0}'", cert2.PublicKey.Key.KeySize) + System.Environment.NewLine);
////List<X509KeyUsageExtension> keyUsageExtensions = cert2.Extensions.OfType<X509KeyUsageExtension>().ToList();
////List<X509Extension> extensions = cert2.Extensions.OfType<X509Extension>().ToList();
ShowX509Extensions(sb, cert2.Subject, cert2.Extensions);
}
}
private static void ShowX509ChainElementCollection(StringBuilder sb, X509ChainElementCollection ces)
{
int x509ChainElementCount = 0;
foreach (X509ChainElement ce in ces)
{
sb.Append(string.Empty + System.Environment.NewLine);
sb.Append(string.Format("----X509ChainElementNumber:{0}", ++x509ChainElementCount) + System.Environment.NewLine);
sb.Append(string.Format("X509ChainElement.Cert.SubjectName.Name='{0}'", ce.Certificate.SubjectName.Name) + System.Environment.NewLine);
sb.Append(string.Format("X509ChainElement.Cert.Issuer='{0}'", ce.Certificate.Issuer) + System.Environment.NewLine);
sb.Append(string.Format("X509ChainElement.Cert.Thumbprint='{0}'", ce.Certificate.Thumbprint) + System.Environment.NewLine);
sb.Append(string.Format("X509ChainElement.Cert.HasPrivateKey='{0}'", ce.Certificate.HasPrivateKey) + System.Environment.NewLine);
X509Certificate2 cert2 = ce.Certificate as X509Certificate2;
ShowX509Certificate2(sb, cert2);
ShowX509Extensions(sb, cert2.Subject, ce.Certificate.Extensions);
}
}
private static void ShowX509Certificate(StringBuilder sb, X509Certificate cert)
{
sb.Append("-----------------------------------------------" + System.Environment.NewLine);
sb.Append(string.Format("Cert.Subject='{0}'", cert.Subject) + System.Environment.NewLine);
sb.Append(string.Format("Cert.Issuer='{0}'", cert.Issuer) + System.Environment.NewLine);
sb.Append(string.Format("Cert.GetPublicKey().Length='{0}'", cert.GetPublicKey().Length) + System.Environment.NewLine);
X509Certificate2 cert2 = cert as X509Certificate2;
ShowX509Certificate2(sb, cert2);
}
}
}