Low Issue Summary
SCP Task will fail if the SSH private key is of type ed25519
Steps to Reproduce
- Create an ed25519 SSH keypair using ssh-keygen or putty-keygen
- Add the equivalent public key to the target SSH host authorized_keys file
- In Bamboo, use an SCP or SSH task to connect to the SSH host
- Run the plan/deployment
Expected Results
The SSH connection should succeed
Actual Results
Build fails with the below exception
error 29-Sep-2022 10:00:36 Error occurred while running Task '(3)' of type com.atlassian.bamboo.plugins.bamboo-scp-plugin:sshtask. error 29-Sep-2022 10:00:36 java.lang.ClassCastException: class net.i2p.crypto.eddsa.EdDSAPublicKey cannot be cast to class net.i2p.crypto.eddsa.EdDSAPublicKey (net.i2p.crypto.eddsa.EdDSAPublicKey is in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoader @3b620b21; net.i2p.crypto.eddsa.EdDSAPublicKey is in unnamed module of loader org.apache.felix.framework.BundleWiringImpl$BundleClassLoader @4da5f22c) error 29-Sep-2022 10:00:36 at net.schmizz.sshj.common.KeyType$6.writePubKeyContentsIntoBuffer(KeyType.java:202) error 29-Sep-2022 10:00:36 at net.schmizz.sshj.common.KeyType.putPubKeyIntoBuffer(KeyType.java:388) error 29-Sep-2022 10:00:36 at net.schmizz.sshj.common.Buffer.putPublicKey(Buffer.java:499) error 29-Sep-2022 10:00:36 at net.schmizz.sshj.userauth.method.KeyedAuthMethod.putPubKey(KeyedAuthMethod.java:55) error 29-Sep-2022 10:00:36 at net.schmizz.sshj.userauth.method.AuthPublickey.buildReq(AuthPublickey.java:62) error 29-Sep-2022 10:00:36 at net.schmizz.sshj.userauth.method.AuthPublickey.buildReq(AuthPublickey.java:81) error 29-Sep-2022 10:00:36 at net.schmizz.sshj.userauth.method.AbstractAuthMethod.request(AbstractAuthMethod.java:68) error 29-Sep-2022 10:00:36 at net.schmizz.sshj.userauth.UserAuthImpl.authenticate(UserAuthImpl.java:73) error 29-Sep-2022 10:00:36 at net.schmizz.sshj.SSHClient.auth(SSHClient.java:221) error 29-Sep-2022 10:00:36 at net.schmizz.sshj.SSHClient.authPublickey(SSHClient.java:342) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.plugins.scp.SshTask.execute(SshTask.java:114) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.task.TaskExecutorImpl.lambda$executeTasks$3(TaskExecutorImpl.java:323) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.task.TaskExecutorImpl.executeTaskWithPrePostActions(TaskExecutorImpl.java:258) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.task.TaskExecutorImpl.executeTasks(TaskExecutorImpl.java:323) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.task.TaskExecutorImpl.execute(TaskExecutorImpl.java:118) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.build.pipeline.tasks.ExecuteBuildTask.call(ExecuteBuildTask.java:73) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.v2.build.agent.DefaultBuildAgent.executeBuildPhase(DefaultBuildAgent.java:205) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.v2.build.agent.DefaultBuildAgent.build(DefaultBuildAgent.java:177) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.v2.build.agent.BuildAgentControllerImpl.lambda$waitAndPerformBuild$0(BuildAgentControllerImpl.java:169) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.variable.CustomVariableContextImpl.withVariableSubstitutor(CustomVariableContextImpl.java:118) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.v2.build.agent.BuildAgentControllerImpl.waitAndPerformBuild(BuildAgentControllerImpl.java:162) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.v2.build.agent.DefaultBuildAgent.lambda$start$0(DefaultBuildAgent.java:122) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.utils.BambooRunnables$1.run(BambooRunnables.java:48) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.security.ImpersonationHelper.runWith(ImpersonationHelper.java:26) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.security.ImpersonationHelper.runWithSystemAuthority(ImpersonationHelper.java:17) error 29-Sep-2022 10:00:36 at com.atlassian.bamboo.security.ImpersonationHelper$1.run(ImpersonationHelper.java:41) error 29-Sep-2022 10:00:36 at java.base/java.lang.Thread.run(Thread.java:829)
Workarounds
- On the SCP/SSH Task use a different type of SSH private key such as RSA
- Use a Script Task with proper "ssh" or "scp" commands – This will require setting the authentication and key exchange manually on the Server and Agents
- mentioned in
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