JDK版本 1.7
bouncycastle 包：
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>1.64</version>
</dependency>
报错堆栈信息如下：
java.security.NoSuchProviderException: JCE cannot authenticate the provider BC
at javax.crypto.JceSecurity.getInstance(JceSecurity.java:101)
at javax.crypto.KeyGenerator.getInstance(KeyGenerator.java:265)
......
Caused by: java.util.jar.JarException: file:/C:/Users/xxxx/.m2/repository/org/bouncycastle/bcprov-jdk15on/1.64/bcprov-jdk15on-1.64.jar has unsigned entries - org/bouncycastle/LICENSE.class
at javax.crypto.JarVerifier.verifySingleJar(JarVerifier.java:462)
at javax.crypto.JarVerifier.verifyJars(JarVerifier.java:322)
at javax.crypto.JarVerifier.verify(JarVerifier.java:250)
at javax.crypto.JceSecurity.verifyProviderJar(JceSecurity.java:161)
at javax.crypto.JceSecurity.getVerificationResult(JceSecurity.java:187)
at javax.crypto.JceSecurity.getInstance(JceSecurity.java:98)
报错加载jar包时签名验证不通过，导致NoSuchProviderException。
如果jdk版本换成1.8就可以正常加载运行了。
官方的解释如下图：
所以如果你不是使用jdk1.8版本的话，可以使用这个包：
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15to18</artifactId>
<version>1.64</version>
</dependency>
