ClassCastException: class org.bouncycastle.jcajce.provider.asymmetric.edec.BCXDHPublicKey cannot be cast to class java.security.interfaces.XECPublicKey (org.bouncycastle.jcajce.provider.asymmetric.edec.BCXDHPublicKey

Issue

• We see the following exception tyring to use bouncy castle with java 11:

    java.lang.ClassCastException: class org.bouncycastle.jcajce.provider.asymmetric.edec.BCXDHPublicKey cannot be cast to class java.security.interfaces.XECPublicKey (org.bouncycastle.jcajce.provider.asymmetric.edec.BCXDHPublicKey is in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoader @2970a5bc; java.security.interfaces.XECPublicKey is in module java.base of loader 'bootstrap')
        at java.base/sun.security.ssl.XDHKeyExchange$XDHEPossession.<init>(XDHKeyExchange.java:107)
        at java.base/sun.security.ssl.NamedGroup$XDHScheme.createPossession(NamedGroup.java:483)
        at java.base/sun.security.ssl.NamedGroup$NamedGroupSpec.createPossession(NamedGroup.java:392)
        at java.base/sun.security.ssl.NamedGroup.createPossession(NamedGroup.java:300)
        at java.base/sun.security.ssl.SSLKeyExchange$T13KeyAgreement.createPossession(SSLKeyExchange.java:568)
        at java.base/sun.security.ssl.SSLKeyExchange.createPossessions(SSLKeyExchange.java:84)
        at java.base/sun.security.ssl.KeyShareExtension$SHKeyShareProducer.produce(KeyShareExtension.java:563)
        at java.base/sun.security.ssl.SSLExtension.produce(SSLExtension.java:583)
        at java.base/sun.security.ssl.SSLExtensions.produce(SSLExtensions.java:253)
        at java.base/sun.security.ssl.ServerHello$T13ServerHelloProducer.produce(ServerHello.java:570)
        at java.base/sun.security.ssl.SSLHandshake.produce(SSLHandshake.java:436)
        at java.base/sun.security.ssl.ClientHello$T13ClientHelloConsumer.goServerHello(ClientHello.java:1234)
        at java.base/sun.security.ssl.ClientHello$T13ClientHelloConsumer.consume(ClientHello.java:1170)
        at java.base/sun.security.ssl.ClientHello$ClientHelloConsumer.onClientHello(ClientHello.java:852)
        at java.base/sun.security.ssl.ClientHello$ClientHelloConsumer.consume(ClientHello.java:813)
        at java.base/sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:392)
        at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:443)