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using j2ssh with keyfile (public and private key) java.security.NoSuchAlgorithmException: Unsupporte

b555f8d3-5152-4fd2-b6f0-743d2872d9e6Jul 15 2015 — edited Jul 15 2015

1. How I generate the public and private key on Mac Maverick

    ssh-keygen -t rsa

    touch authorized_keys

    chmod 700 ~/.ssh && chmod 600 ~/.ssh/authorized_keys

    cat ~/.ssh/id_rsa.pub | ssh "user@hostname" 'cat >> .ssh/authorized_keys'

2. My java code of authentication

    try {

      //Authenticate using a public key

      PublicKeyAuthenticationClient pk = new PublicKeyAuthenticationClient();

      pk.setUsername(username);

      // Open up the private key file

      SshPrivateKeyFile keyfile = SshPrivateKeyFile.parse(new File(keyfile));    

      SshPrivateKey key = keyfile.toPrivateKey(password);    ———— this line generate an error

           

      // Set the key and authenticate

      pk.setKey(key);

      int result = sshclient.authenticate(pk);

      if(result != AuthenticationProtocolState.COMPLETE) {

          Exception ex = new Exception("Login to " + hostname + " failed result=" + result);

          throw ex;

          }

      }

     catch (Exception ex) {

        sshclient.disconnect();

        System.out.println("Unable to authenticate with " + hostname + ex.toString());

    }

    error: 

        com.sshtools.j2ssh.transport.publickey.InvalidSshKeyException: Can't read key due to cryptography problems: java.security.NoSuchAlgorithmException:

        Unsupported passphrase algorithm: AES-128-CBC

3. My private key and public key print out

   

Private Key File : -----BEGIN RSA PRIVATE KEY-----

Proc-Type: 4,ENCRYPTED

DEK-Info: AES-128-CBC,80E6215A7A6068D5936A78262E98737A

ReX4aJRok103WlJRXdJfJkY6TXZKIcWeI6fdNYYQOhJD+GdewB2i8Lv143x7pJI6

uddhfBcYePgBNMss5OnXpWVRBTxONWqeFKS9nuNBF2V5ewlwDt+PLBZRukXenFOj

PJahyzXpZhh+R9uUD3w90gVpEnbf3fiyowXOP6f5f4Vm/tgoYHqdu12n6Cdu4Agt

CDJubQ5hDBZQmDNxeoahXeeVJITd+L4eb0f/xJ/GrjbAmTdGYFFDJjghNS1AxVoq

XH7owKS/PauRznZDqR3chaw8O5t2oh1xH1DDEPuxnf2BTTxaT30sFfCqF+P9Lpio

edgPxMgbfJoFzKJmtVMz6O7demXaq86Z2Qucun9HnoGbcqUBHl5UFW+SiX7hw+KJ

AB6k9laJ8VKKdwCzpt9alqyyatyexuHowv8syIFwPYgqi6sQX3maLTAIBMSxIMR1

OZzE6aAcnK3721flHDhHsP151CVscn+z73JTY1KfRyFhoniujE6x8hfFrFaRrJKv

xjcsF81GI5S/J9N97hR5bp0sO9s1RpARV1r35M74EjlJS9ozO6dPTea/7OHLtwIr

mXOsJoQKqjDNkRJ+ezhHmtKUt3ES/y3uYOrc40ll7lOMfu2Oq3bf506blkh20VQk

XHsFPjHy72nweIgihLQZLtpYJYlg7QAi81uO/74sFwBxc0lmhEJkCxsUHYAl6R0o

zl4bGC1U9KS9MCf2j5Js/pyVAbbS5yFba5NrvKGRg/f94Wotf6+cA2YPEdUmJcpl

q5ic8N0Pr7l2AFQH2sOWm5DpfCz+XBgLPB13WMUPXXNRvga1vcki8Cb2IY9eNJzw

lYDqvTiK1VO9zdIcGYAf0hj6ctuHxwNZ7bSNEnheMsDMoB+E/JhzT07sxKg2ELUo

kOCOTXd2Mtons6Bhpl+tfjSQDjdiLz1F8/J2NEcz2SyFR+3FNi8h4Rz7mJhwBOUi

mO0/KQ+UY0ArD+REin/elZN615P8fThSCRqDVpaJoPtLx2tjBwUbLC+fyng/yEbp

PUb+ohIanEmUB7DDhjQN7Ad7RhWNkqm1Ybb30AS4Gce/CohuXe3bOoY5a+v6Pq2n

G3BqfzvLUeHMAorznPBiEQ07Xj5PNCo4alBEk3wSUsnolcFGdqhljL6Xjl1LrxzA

+cVmjmT4RnlaTu7brplmkIvP2SC5xLidsXD1brZIyTEepi2HRcqVriFBPaSZh/in

ktUmroqshhC0ANz+rhtAmBzeVeHh4pbV8KiMaU2ShQfdqeqHpDV7ZA1ZyW/SJZ6j

TEENm5hPuYL6lsGjCcJjZgABCcsqTAyaYL27DCHEWQFewtwT+lvlfiMfB7/wpbcL

6GbBNZEsoKCvjUlpaYcLBsx3cmS9W5hW7I1wnkEzo4fw+hXkVFXfmn+mc5HzdS8h

14cWNlTlmkou4XbqQvjbMU1BmgZ1ShNCzMzjW9Cvrto0K6hs9XGKCkVYnjNCNLlh

HVLkD4cE1bAzWet82+OYTOSUlJACeao96namOzYd5Z/LZY/CWhY55pjhgpIVQpxw

/k+Vad1E7v/3bXlAfENr8vA+WC84KgR8feN1+6MzOL9i1iDNOOErYffmNQdG1ra3

-----END RSA PRIVATE KEY—— 

And my public key:

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC+zCTF2rHJ/XQm6v+Wy6Z5muvA2lDL7pnJ2L0ShrooutHjxqppDVvPhYyzaGrqgc2uVSMtRsefsDcvDHVOtJ4uw3iVzMlSlaWz42aNGDMSVat2q25Tp/67jOaI9IqlFTSydlcIU2J23hMupw6ffQXo8U2CY3OXqsEyuKlL4Ka0eYCNa5GnumcTzyKWtJSL5+H6LgIONDvXqLQakjEJ7llg1nE1nGksi0nmG6MTqRTOTfgatnnYL2cNgLYx3NhzTFgLpDqg0cQ8WuVg/HZYHwTnL5CT3970nTex6rxL8Gpismeqc83U6i2SSeI6OZziSWlRq4MXc83WkaybbX6T3ul3 user@servername

Could someone tell me what did I do wrong. Why j2ssh cann't read my private key???  Thanks a lot.

lucy


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