こんにちは、単純な sftp を試していますが、確立中にエラーが発生します。接続、https: //www.sshtools.com/en/products/java-ssh-client で入手可能なmaverick-legacy-client-all jar を使用してい ます。このコードはリリース 1.6.9 で正常に動作していましたが、更新時に失敗しましたそれを 1.6.17 にします。
また、jarの変更に関するドキュメントをここで調べてみました。私の例外であるDiffieHellmanGroupExchange Algo関連の変更に関するメモはほとんどありませんでしたが、明確に理解できませんでした。
public void connect() throws SshException, IOException,
SftpStatusException, ChannelOpenException {
SshConnector con = SshConnector.createInstance();
con.setKnownHosts(new SftpHostKeyVerification());
// Tries SSH2 first and fallback to SSH1 if its not available
con.setSupportedVersions(SshConnector.SSH1 | SshConnector.SSH2);
/*Error coming here, in con.connect*/
this.ssh = con
.connect(new SocketTransport(this.host, DEFAULT_SSH_PORT),
this.userName);
PasswordAuthentication pwd = new PasswordAuthentication();
pwd.setPassword(this.passwod);
int isLoggedIn = this.ssh.authenticate(pwd);
if (SshAuthentication.COMPLETE == isLoggedIn) {
this.client = new SftpClient(this.ssh);
} else {
throw new IOException("[Authentication failure] login status: "
+ isLoggedIn);
}
}
例外ログ:
com.maverick.ssh.SshException: com.maverick.ssh.SshException
at com.maverick.ssh.components.jce.client.DiffieHellmanGroupExchangeSha1.performClientExchange(DiffieHellmanGroupExchangeSha1.java:315)
at com.maverick.ssh2.TransportProtocol.performKeyExchange(TransportProtocol.java:1424)
at com.maverick.ssh2.TransportProtocol.processMessage(TransportProtocol.java:1835)
at com.maverick.ssh2.TransportProtocol.startTransportProtocol(TransportProtocol.java:348)
at com.maverick.ssh2.Ssh2Client.connect(Ssh2Client.java:146)
at com.maverick.ssh.SshConnector.connect(SshConnector.java:649)
at com.maverick.ssh.SshConnector.connect(SshConnector.java:471)
at com.tekelec.ems.util.SftpImpl.connect(SftpImpl.java:73)
at com.tekelec.ems.eagle.measurement.WriterThread.run(WriterThread.java:93)
Caused by: com.maverick.ssh.SshException: Failed to generate DH value: Prime size must be multiple of 64, and can only range from 512 to 1024 (inclusive) [java.security.InvalidAlgorithmParameterException]
at com.maverick.ssh.components.jce.client.DiffieHellmanGroupExchangeSha1.performClientExchange(DiffieHellmanGroupExchangeSha1.java:250)
... 8 more
Caused by: java.security.InvalidAlgorithmParameterException: Prime size must be multiple of 64, and can only range from 512 to 1024 (inclusive)
at com.sun.crypto.provider.DHKeyPairGenerator.initialize(DHKeyPairGenerator.java:120)
at java.security.KeyPairGenerator$Delegate.initialize(KeyPairGenerator.java:658)
at java.security.KeyPairGenerator.initialize(KeyPairGenerator.java:400)
at com.maverick.ssh.components.jce.client.DiffieHellmanGroupExchangeSha1.performClientExchange(DiffieHellmanGroupExchangeSha1.java:240)
... 8 more