Exception | java.security.NoSuchProviderException: no such provider: BC

ゝ一世哀愁。 2021-11-11 06:50 738阅读 0赞

# **背景** #

今天在用PGP key做JWT签名和验签的时候，转换报了如下错误：

org.bouncycastle.openpgp.PGPException: exception on setup: java.security.NoSuchProviderException: no such provider: BC
    
    	at org.bouncycastle.openpgp.operator.jcajce.JcaPGPDigestCalculatorProviderBuilder$1.get(Unknown Source)
    	at org.bouncycastle.openpgp.operator.PGPUtil.makeKeyFromPassPhrase(Unknown Source)
    	at org.bouncycastle.openpgp.operator.PBESecretKeyDecryptor.makeKeyFromPassPhrase(Unknown Source)
    	at org.bouncycastle.openpgp.PGPSecretKey.extractKeyData(Unknown Source)
    	at org.bouncycastle.openpgp.PGPSecretKey.extractPrivateKey(Unknown Source)
    	at com.eshare.util.PGPExampleUtil.findSecretKey(PGPExampleUtil.java:55)
    	at com.eshare.examples.JwtExampleTest.testJWTSigningAndVerify(JwtExampleTest.java:46)
    	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    	at java.lang.reflect.Method.invoke(Method.java:498)
    	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
    Caused by: java.security.NoSuchProviderException: no such provider: BC
    	at sun.security.jca.GetInstance.getService(GetInstance.java:83)
    	at sun.security.jca.GetInstance.getInstance(GetInstance.java:206)
    	at java.security.Security.getImpl(Security.java:698)
    	at java.security.MessageDigest.getInstance(MessageDigest.java:227)
    	at org.bouncycastle.jcajce.util.NamedJcaJceHelper.createDigest(Unknown Source)
    	at org.bouncycastle.openpgp.operator.jcajce.OperatorHelper.createDigest(Unknown Source)
    	... 29 more

# **解决方案** #

经排查，发现目前JDK8不支持`BouncyCastleProvider`导致，可以通过在静态代码块加入`BouncyCastleProvider`即可解决

/** * used to fix java.security.NoSuchProviderException: no such provider: BC */
      static { 
        try { 
          Security.addProvider(new BouncyCastleProvider());
        } catch (Exception e) { 
          e.printStackTrace();
        }
      }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0V2YW5fTGV1bmc_size_16_color_FFFFFF_t_70]  
同时，如果需要用到BouncyCastle相关类，还需要依赖其对应的依赖包

<dependency>
          <groupId>org.bouncycastle</groupId>
          <artifactId>bcpg-jdk15on</artifactId>
          <version>1.62</version>
        </dependency>
        
        <dependency>
          <groupId>org.bouncycastle</groupId>
          <artifactId>bcprov-jdk15on</artifactId>
          <version>1.62</version>
        </dependency>

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0V2YW5fTGV1bmc_size_16_color_FFFFFF_t_70]: /images/20211109/93310064f6a9405bb9d29e140f588d53.png