小贝子编程

在Android上使用海绵城堡而不是bouncycastle



我目前有一个Android应用程序通过ssh使用密码连接到我的路由器。我希望改善这一点，所以我可以使用钥匙，但我有真正的问题。据我所知，bouncycastle的版本包含在android是一个残废的版本，因为这个ssh密钥不能与jsch一起工作。我看过海绵城堡，它声称是一个更完整的实现。下图是与使用bouncycastle基本相同的结果，Auth Fail。


10-26 18:18:23.528: INFO/System.out(10642): Log(jsch,1): Connecting to 192.168.88.1 port 22
10-26 18:18:23.538: INFO/System.out(10642): Log(jsch,1): Connection established
10-26 18:18:23.548: INFO/System.out(10642): Log(jsch,1): Remote version string: SSH-2.0-ROSSSH
10-26 18:18:23.548: INFO/System.out(10642): Log(jsch,1): Local version string: SSH-2.0-JSCH-0.1.44
10-26 18:18:23.548: INFO/System.out(10642): Log(jsch,1): CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
10-26 18:18:23.618: INFO/System.out(10642): Log(jsch,1): SSH_MSG_KEXINIT sent
10-26 18:18:23.618: INFO/System.out(10642): Log(jsch,1): SSH_MSG_KEXINIT received
10-26 18:18:23.628: INFO/System.out(10642): Log(jsch,1): kex: server->client aes128-cbc hmac-md5 none
10-26 18:18:23.628: INFO/System.out(10642): Log(jsch,1): kex: client->server aes128-cbc hmac-md5 none
10-26 18:18:23.688: INFO/System.out(10642): Log(jsch,1): SSH_MSG_KEXDH_INIT sent
10-26 18:18:23.688: INFO/System.out(10642): Log(jsch,1): expecting SSH_MSG_KEXDH_REPLY
10-26 18:18:24.058: INFO/System.out(10642): Log(jsch,1): ssh_dss_verify: signature true
10-26 18:18:24.058: INFO/System.out(10642): Log(jsch,2): Permanently added '192.168.88.1' (DSA) to the list of known hosts.
10-26 18:18:24.058: INFO/System.out(10642): Log(jsch,1): SSH_MSG_NEWKEYS sent
10-26 18:18:24.058: INFO/System.out(10642): Log(jsch,1): SSH_MSG_NEWKEYS received
10-26 18:18:24.078: INFO/System.out(10642): Log(jsch,1): SSH_MSG_SERVICE_REQUEST sent
10-26 18:18:24.088: INFO/System.out(10642): Log(jsch,1): SSH_MSG_SERVICE_ACCEPT received
10-26 18:18:24.108: INFO/System.out(10642): Log(jsch,1): Authentications that can continue: publickey,keyboard-interactive,password
10-26 18:18:24.108: INFO/System.out(10642): Log(jsch,1): Next authentication method: publickey
10-26 18:18:24.108: INFO/System.out(10642): Log(jsch,1): Authentications that can continue: password
10-26 18:18:24.118: INFO/System.out(10642): Log(jsch,1): Next authentication method: password
10-26 18:18:24.128: INFO/System.out(10642): Log(jsch,1): Disconnecting from 192.168.88.1 port 22
10-26 18:18:24.138: WARN/System.err(10642): com.jcraft.jsch.JSchException: Auth fail

jsch中没有大量的日志信息来帮助我找出问题所在。

我想我用的是非常标准的代码:


static {
        Security.addProvider(new org.spongycastle.jce.provider.BouncyCastleProvider());
    }

在OnCreate中，我删除了原来的bouncycastle提供商


        Security.removeProvider("BC");

然后在尝试连接

之前添加身份

        jsch.addIdentity(key_filename);
    Properties sshProp = new Properties();
    sshProp.put("StrictHostKeyChecking", "no");
    session.setConfig(sshProp);
    session.connect();

有人成功地做到了吗?我忘了什么吗?

编辑点附加信息:

正如我在评论中所说的，我现在怀疑当我切换密钥并在sshd版本openssh_5.3 . p1 Debian-3ubuntu7上测试时，密钥甚至没有被尝试过


debug2: mac_setup: found hmac-md5
debug1: kex: client->server aes128-ctr hmac-md5 none
debug2: mac_setup: found hmac-md5
debug1: kex: server->client aes128-ctr hmac-md5 none
debug2: dh_gen_key: priv key bits set: 122/256
debug2: bits set: 519/1024
debug1: expecting SSH2_MSG_KEXDH_INIT
debug2: bits set: 537/1024
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: monitor_read: 5 used once, disabling now
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: KEX done
debug1: userauth-request for user root service ssh-connection method none
debug1: attempt 0 failures 0
debug2: parse_server_config: config reprocess config len 638
debug2: input_userauth_request: setting up authctxt for root
debug2: input_userauth_request: try method none
debug2: monitor_read: 7 used once, disabling now
debug1: PAM: initializing for "root"
debug1: PAM: setting PAM_RHOST to "nexus"
debug1: PAM: setting PAM_TTY to "ssh"
debug2: monitor_read: 50 used once, disabling now
debug2: monitor_read: 3 used once, disabling now
Failed none for root from 192.168.88.31 port 37807 ssh2
debug1: userauth-request for user root service ssh-connection method password
debug1: attempt 1 failures 0
debug2: input_userauth_request: try method password
debug1: PAM: password authentication failed for root: Authentication failure
Failed password for root from 192.168.88.31 port 37807 ssh2
Received disconnect from 192.168.88.31: 3: com.jcraft.jsch.JSchException: Auth fail
debug1: do_cleanup
debug1: do_cleanup
debug1: PAM: cleanup

我可以看到没有尝试使用密钥，而从pc 


debug1: userauth-request for user root service ssh-connection method publickey
debug1: attempt 1 failures 0
debug2: input_userauth_request: try method publickey
debug1: test whether pkalg/pkblob are acceptable
debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048
debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048
debug1: temporarily_use_uid: 0/0 (e=0/0)
debug1: trying public key file /root/.ssh/authorized_keys
debug1: restore_uid: 0/0
debug1: temporarily_use_uid: 0/0 (e=0/0)
debug1: trying public key file /root/.ssh/authorized_keys2
debug1: fd 4 clearing O_NONBLOCK
debug1: matching key found: file /root/.ssh/authorized_keys2, line 2

我可以看到正在使用的key方法。下面是我用于测试的代码，不是很漂亮，但功能齐全。我知道这很可怕但密码确实包含文件名和密钥路径当authtype == AUTHENTICATION_METHOD_KEY


public static String testSSHCommand ( String username, String password, String hostname, int port, String command, int authtype) throws Exception {    
    JSch jsch = new JSch();
    JSch.setLogger(new Logger() {
            public boolean isEnabled(int i) {
                return true;
            }
            public void log(int i, String s) {
                System.out.println("Log(jsch," + i + "): " + s);
            }
    });

    if (authtype != AUTHENTICATION_METHOD_PASSWORD) {
        Log.v("AUTHMETHOD","authmethod was "+authtype+" with key filename of "+password);
        jsch.addIdentity(password);
    } 
    Session session = jsch.getSession(username, hostname, 22);
    if (authtype != AUTHENTICATION_METHOD_KEY) {
        session.setPassword(password);
    }

    Properties prop = new Properties();
    prop.put("StrictHostKeyChecking", "no");
    session.setConfig(prop);
    session.connect();
    if (session.isConnected() ) {
        ChannelExec channelssh = (ChannelExec)          
        session.openChannel("exec");      
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        channelssh.setOutputStream(os);
        channelssh.setCommand(command);
        channelssh.connect();        
        channelssh.disconnect();
        return os.toString();
    } else {
        return "";
    }
}

我测试了你的方法包装成一个类与main方法，并与此，它在一个正常的Java 6 JRE(没有BouncyCastle)， JSch-0.1.45(修改版本与更多的日志输出)和"OpenSSH_5.8p1 Debian-1ubuntu3" sshd.

我在代码中添加了一个session.disconnect()和一些睡眠。

我这里没有Android，看看这是否会有什么不同。

这里是我的本地输出:

authmethod was 2 with key filename of /home/paulo/.ssh/id_rsa
Log(jsch,1): Connecting to localhost port 22
Log(jsch,1): Connection established
Log(jsch,1): Remote version string: SSH-2.0-OpenSSH_5.8p1 Debian-1ubuntu3
Log(jsch,1): Local version string: SSH-2.0-JSCH-0.1.45
Log(jsch,1): CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
Log(jsch,1): aes256-ctr is not available.
Log(jsch,1): aes192-ctr is not available.
Log(jsch,1): aes256-cbc is not available.
Log(jsch,1): aes192-cbc is not available.
Log(jsch,1): arcfour256 is not available.
Log(jsch,1): CheckKexes: diffie-hellman-group14-sha1
Log(jsch,1): diffie-hellman-group14-sha1 is not available.
Log(jsch,1): SSH_MSG_KEXINIT sent
Log(jsch,1): SSH_MSG_KEXINIT received
Log(jsch,1): kex: server->client aes128-ctr hmac-md5 none
Log(jsch,1): kex: client->server aes128-ctr hmac-md5 none
Log(jsch,1): SSH_MSG_KEXDH_INIT sent
Log(jsch,1): expecting SSH_MSG_KEXDH_REPLY
Log(jsch,1): ssh_rsa_verify: signature true
Log(jsch,2): Permanently added 'localhost' (RSA) to the list of known hosts.
Log(jsch,1): SSH_MSG_NEWKEYS sent
Log(jsch,1): SSH_MSG_NEWKEYS received
Log(jsch,1): SSH_MSG_SERVICE_REQUEST sent
Log(jsch,1): SSH_MSG_SERVICE_ACCEPT received
Log(jsch,1): Authentications that can continue: publickey,keyboard-interactive,password
Log(jsch,1): Next authentication method: publickey
Log(jsch,1): Authentication succeeded (publickey).
Log(jsch,0): packet received, type: 91
Log(jsch,1): SSH_MSG_CHANNEL_OPEN_CONFIRMATION received, channel: 0
Log(jsch,0): packet received, type: 94
Log(jsch,1): SSH_MSG_CHANNEL_DATA received, channel: 0, len: 13
Log(jsch,0): packet received, type: 96
Log(jsch,1): SSH_MSG_CHANNEL_EOF received, channel: 0
Log(jsch,0): packet received, type: 98
Log(jsch,1): SSH_MSG_CHANNEL_REQUEST received, channel: 0, type: [B@1ad086a, want reply: false
Log(jsch,0): packet received, type: 97
Log(jsch,1): SSH_MSG_CHANNEL_CLOSE received, channel: 0
Log(jsch,1): Disconnecting from localhost port 22
Log(jsch,1): Caught an exception, leaving main loop due to Socket closed
Output: »Hallo, Welt!
«

(我使用参数paulo -key /home/paulo/.ssh/id_rsa localhost 22 hello调用程序，因此它在目标机器上执行默认的Hello World程序，并且使用德语，因为这是我配置的语言环境。)

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