WCF 客户端 - 指定 WS-Security Timestamp 签名的签名算法
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【中文标题】WCF 客户端 - 指定 WS-Security Timestamp 签名的签名算法【英文标题】:WCF Client - Specifying the signature algorithm for WS-Security Timestamp signature 【发布时间】:2012-03-11 02:30:33 【问题描述】:我有一个 WCF 客户端正在向非 WCF 服务发送消息,并且该服务在处理用于签署 WS-Security Timestamp 元素的 HMAC-SHA1 签名方法时遇到问题。理想情况下,我们希望使用 RSA-SHA1 签名方法,但我无法让 WCF 使用该签名方法。
我使用的绑定是自定义绑定,它允许我通过 HTTPS 发送 SAML 2.0 令牌:
<customBinding>
<!-- This binding is a WS2007FederationHttpBinding without Secure Sessions that uses Text message encoding. -->
<binding
name="WS2007FederationHttpBinding_NoSecureSession_Text"
closeTimeout="00:01:00"
openTimeout="00:01:00"
receiveTimeout="00:10:00"
sendTimeout="00:01:00">
<security
authenticationMode="IssuedTokenOverTransport"
requireSignatureConfirmation="true"
securityHeaderLayout="Lax"
messageSecurityVersion="WSSecurity11WSTrustFebruary2005WSSecureConversationFebruary2005WSSecurityPolicy11BasicSecurityProfile10"
keyEntropyMode="CombinedEntropy"
includeTimestamp="true">
<issuedTokenParameters
tokenType="urn:oasis:names:tc:SAML:2.0:assertion">
<!-- This describes the STS. That is, the URL, the binding to use, and its Identity -->
<issuer
address="http://hostname//STS.svc"
binding="ws2007HttpBinding"
bindingConfiguration="StsUserNameBindingConfiguration">
<identity>
<!-- This is the certificate used for signing on the STS. -->
<!-- Replace "sts-signing-certificate-thumbprint" with the actual thumbprint of the STS's signing certificate -->
<certificateReference
findValue="sts-signing-certificate-thumbprint"
storeLocation="LocalMachine"
storeName="My"
x509FindType="FindByThumbprint"/>
</identity>
</issuer>
</issuedTokenParameters>
<!-- This basically says "Don't use Secure Conversation" -->
<secureConversationBootstrap/>
</security>
<!-- Use Text Encoding -->
<textMessageEncoding/>
<!-- This says to use HTTPS when communicating with the remote service -->
<httpsTransport
requireClientCertificate="true"
maxBufferPoolSize="134217728"
maxReceivedMessageSize="134217728"
maxBufferSize="134217728"/>
</binding>
</customBinding>
传出请求中的签名如下所示:
<Signature
xmlns="http://www.w3.org/2000/09/xmldsig#">
<SignedInfo>
<CanonicalizationMethod
Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
<SignatureMethod
Algorithm="http://www.w3.org/2000/09/xmldsig#hmac-sha1"/>
<Reference
URI="#_0">
<Transforms>
<Transform
Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
</Transforms>
<DigestMethod
Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
<DigestValue>GZfW1RkyS4DHYFPHRnRuqNSo+qE=</DigestValue>
</Reference>
</SignedInfo>
<SignatureValue>rMzQ/kEV7AXcO3wm9hfQXNoX5r4=</SignatureValue>
<KeyInfo>
<o:SecurityTokenReference
b:TokenType="http://docs.oasis-open.org/wss/oasis-wss-saml-token-profile-1.1#SAMLV2.0"
xmlns:b="http://docs.oasis-open.org/wss/oasis-wss-wssecurity-secext-1.1.xsd">
<o:KeyIdentifier
ValueType="http://docs.oasis-open.org/wss/oasis-wss-saml-token-profile-1.1#SAMLID">_9f79359e-63dc-4e38-888c-6567dac4b41b</o:KeyIdentifier>
</o:SecurityTokenReference>
</KeyInfo>
</Signature>
注意<SignatureMethod>
是http://www.w3.org/2000/09/xmldsig#hmac-sha1
一个有趣的事情是 HMAC-SHA1 算法是对称的(一个密钥来加密和解密),而 RSA-SHA1 是不对称的(需要一个密钥来加密和一个解密)。我认为 WCF 使用 HMAC-SHA1 算法,因为它是对称的,并且正在交换的 SAML 令牌是共享密钥(密钥)。使用 SAML 令牌作为对称算法的共享密钥是有意义的,但是否有可用选项强制 WCF 使用 RSA-SHA1 等非对称算法?
我已经能够通过更改 binding/security/defaultAlgorithmSuite 属性对签名方法进行一些细微的修改,但是各种选项无法让我在此处指定 RSA-SHA1:
defaultAlgorithm = 默认值:
<SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#hmac-sha1"/>
<DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
defaultAlgorithm = Basic256:
<SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#hmac-sha1"/>
<DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
defaultAlgorithm = Basic256Rsa15:
<SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#hmac-sha1"/>
<DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
defaultAlgorithm = Basic256Sha256:
<SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#hmac-sha256"/>
<DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
defaultAlgorithm = Basic256Sha256Rsa15:
<SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#hmac-sha256"/>
<DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
有没有办法强制 WCF 在时间戳签名上使用 RSA-SHA1?
【问题讨论】:
【参考方案1】:我认为这是一个互操作性问题。下面的链接也有类似的问题。
http://www.fokkog.com/2011/01/ws-security-interoperability-issue.html
您可以手动创建和签署令牌。检查这个帖子:
How to make WCF Client conform to specific WS-Security - sign UsernameToken and SecurityTokenReference
【讨论】:
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