验证 Azure AD 令牌签名失败 JAVA [英] Validating Azure AD Token signature fails JAVA
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问题描述
我正在努力验证 Azure AD 令牌签名.
I am struggling to validate an Azure AD token signature.
当我在
https://login.microsoftonline.com/common/.well-已知/openid-配置
我检查了所有的关键数据.
I check the belonging key data .
我尝试使用n" - 模数和e"字段来生成用于签名验证的公钥，但最终出现错误:
I try to use the "n" - modulus and "e" fields to generate the public key for the signature validation I end up with an error:
BASE64Decoder decoder = new BASE64Decoder();
byte[] modulusBytes = decoder.decodeBuffer(n);
byte[] exponentBytes = decoder.decodeBuffer(e);
BigInteger modulusInt = new BigInteger(1, modulusBytes);
BigInteger exponentInt = new BigInteger(1, exponentBytes);
try {
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
RSAPublicKeySpec publicSpec = new RSAPublicKeySpec(modulusInt, exponentInt);
RSAPublicKey pubKey = (RSAPublicKey)keyFactory.generatePublic(publicSpec);
Jwt<Header, String> c = Jwts.parser().setSigningKey(pubKey).parsePlaintextJwt(token);
} catch (Exception ex) {
ex.printStackTrace();
}
控制台:
io.jsonwebtoken.SignatureException: Unable to verify RSA signature using configured PublicKey. Signature length not correct: got 256 but was expecting 246
at io.jsonwebtoken.impl.crypto.RsaSignatureValidator.isValid(RsaSignatureValidator.java:50)
at io.jsonwebtoken.impl.crypto.DefaultJwtSignatureValidator.isValid(DefaultJwtSignatureValidator.java:47)
at io.jsonwebtoken.impl.DefaultJwtParser.parse(DefaultJwtParser.java:351)
at io.jsonwebtoken.impl.DefaultJwtParser.parse(DefaultJwtParser.java:481)
at io.jsonwebtoken.impl.DefaultJwtParser.parsePlaintextJwt(DefaultJwtParser.java:503)
at com.ge.hc.pfh.poc.ams.filter.JwtFilter.doFilter(JwtFilter.java:120)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at com.ge.hc.pfh.poc.ams.filter.ApiOriginFIlter.doFilter(ApiOriginFIlter.java:28)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at com.ge.hc.pfh.poc.ams.filter.MDCFilter.doFilter(MDCFilter.java:34)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:89)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
我尝试了另一种方法来使用x5c"文件，它是一个 base 64 编码的证书链:
I tried another approach to use the "x5c" filed which is a base 64 encoded cert chain:
byte[] certChain = Base64.getDecoder().decode(x5c);
X509Certificate cert = X509CertUtils.parse(certChain);
PublicKey pubKeyNew = cert.getPublicKey();
Claims claims3 = Jwts.parser()
.setSigningKey(pubKeyNew)
.parseClaimsJws(token).getBody();
我最终遇到了另一个错误:
I end up with an other error:
io.jsonwebtoken.SignatureException: JWT signature does not match locally computed signature. JWT validity cannot be asserted and should not be trusted.
at io.jsonwebtoken.impl.DefaultJwtParser.parse(DefaultJwtParser.java:354)
at io.jsonwebtoken.impl.DefaultJwtParser.parse(DefaultJwtParser.java:481)
at io.jsonwebtoken.impl.DefaultJwtParser.parsePlaintextJwt(DefaultJwtParser.java:503)
at com.ge.hc.pfh.poc.ams.filter.JwtFilter.doFilter(JwtFilter.java:106)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at com.ge.hc.pfh.poc.ams.filter.ApiOriginFIlter.doFilter(ApiOriginFIlter.java:28)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at com.ge.hc.pfh.poc.ams.filter.MDCFilter.doFilter(MDCFilter.java:34)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:89)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
有谁知道我做错了什么?谢谢.
Would anyone know what I am doing wrong? Thanks.
推荐答案
第一个例子
https://login.microsoftonline.com/common/discovery/keys 中的
模数和指数(n 和 e)被编码在 base64url 中而不是在 base64 中，因此解码它们的代码应该是
Modulus and Exponent (n and e) in https://login.microsoftonline.com/common/discovery/keys are encoded in base64url and not in base64, so the code to decode them should be
byte[] modulusBytes = Base64.getUrlDecoder().decode(n);
BigInteger modulusInt = new BigInteger(1, modulusBytes);
不要使用旧的com.sun.misc.BASE64Decoder
如果 JWT 已签名，则不应使用 JWTParser.plaintextJwt().根据文档
If the JWT is signed you should not use JWTParser.plaintextJwt(). According to documentation
plaintextJwt:一个紧凑的序列化无符号明文 JWT 字符串
plaintextJwt: a compact serialized unsigned plaintext JWT string
改为使用 parseClaimsJws 或 parsePlaintextJws.第二种方法仅当有效负载是非 JSON 的字符串时
Use instead parseClaimsJws or parsePlaintextJws. The second method only if the payload is a string non-JSON
第二个例子
第二个例子基本正确.我假设 X509CertUtils.parse(certChain) 类似于
The second example is basically right. I assume X509CertUtils.parse(certChain) is similar to
InputStream in = new ByteArrayInputStream(certChain);
CertificateFactory certFactory = CertificateFactory.getInstance("X.509");
X509Certificate cert = (X509Certificate)certFactory.generateCertificate(in);
证书的模数和指数和解码后的一样，所以公钥是等价的
Modulus and exponent of the certificate are the same that the decoded, so public key is equivalent
链接中有两个相似的证书，请检查两者.您应该能够验证签名.如果不是，则令牌未使用这些密钥进行签名
There are two similar certificates in the link, check both. You should be able to validate the signature. If not, then the token is not signed with those keys
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