ssh2节点js sftp协议错误握手失败

Question

你好，我有一个小问题，我开发了一个带有节点js的脚本sftp客户端，它连接到sftp服务器并抓取一些文件，我用本地服务器测试了它的工作，但是当我尝试将它与生产服务器一起使用时，我收到了这个错误 ：

错误：握手失败：没有匹配的密钥交换算法

我已经使用生成了 rsa 密钥ssh-keygen

这是脚本的相关部分：

var Client = require('ssh2').Client;
var fs = require('fs');
var path = require('path');

var args = process.argv.slice(2);

var connSettings = {
    host: args[0] || '127.0.0.1',
    port: args[1] || 22,
    username: args[2] || 'karim',
    password: args[3] || 'karimos',
    algorithms: {
        hmac: ['hmac-sha2-256', 'hmac-sha2-512', 'hmac-sha1', 'hmac-sha1-96']
    }

};

Answer 1

我也遇到了同样的问题并通过添加以下内容解决了它：

algorithms: {
        kex: [
          "diffie-hellman-group1-sha1",
          "ecdh-sha2-nistp256",
          "ecdh-sha2-nistp384",
          "ecdh-sha2-nistp521",
          "diffie-hellman-group-exchange-sha256",
          "diffie-hellman-group14-sha1"
        ],
        cipher: [
          "3des-cbc",
          "aes128-ctr",
          "aes192-ctr",
          "aes256-ctr",
          "aes128-gcm",
          "aes128-gcm@openssh.com",
          "aes256-gcm",
          "aes256-gcm@openssh.com"
        ],
        serverHostKey: [
          "ssh-rsa",
          "ecdsa-sha2-nistp256",
          "ecdsa-sha2-nistp384",
          "ecdsa-sha2-nistp521"
        ],
        hmac: [
          "hmac-sha2-256",
          "hmac-sha2-512",
          "hmac-sha1"
        ]
    }

Answer 2

对于我自己，我添加debug: console.log到我的配置对象中。此输出更多有关连接尝试的信息。

{
    "port": 22,
    "host": "test.test.com",
    "user": "test",
    "password": "******",
    "debug": console.log
}

握手：（远程）KEX 方法：diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1

握手：没有匹配的密钥交换算法

基于这个错误我更新了我的配置算法：

{
    "port": 22,
    "host": "test.test.com",
    "user": "test",
    "password": "******",
    "algorithms": {
        "kex": [
            "diffie-hellman-group14-sha1","diffie-hellman-group-exchange-sha1"
        ]
    }
}

添加此算法后，在我的机器上连接成功