ssh秘钥登录

ssh 秘钥登录#

git 生成 ssh 秘钥#

欧尼酱，生成 SSH 秘钥是一件很有用的事情喵！下面是生成 SSH 秘钥的步骤：

打开终端或命令提示符（Terminal 或 Command Prompt）。
输入以下命令来生成 SSH 秘钥对：
```
ssh-keygen -t rsa -b 4096 -C "[email protected]"
```
将 "[email protected]" 替换成你的电子邮件地址喵。
系统会询问你秘钥的保存位置和文件名。默认情况下，SSH 秘钥会被保存在用户主目录下的 .ssh 文件夹中。
你可以选择设置一个密码来保护你的私钥，这是可选的喵。如果你设置了密码，在使用私钥时会需要输入这个密码。
生成完毕后，你会在指定的目录中找到两个文件：id_rsa（私钥）和id_rsa.pub（公钥）。
公钥（id_rsa.pub文件内容）是你需要分享给 Git 托管服务或其他需要的地方。私钥要妥善保存，不要随意分享。

生成 SSH 秘钥后，你可以将公钥添加到你的 Git 托管平台账户中，这样就可以通过 SSH 安全地与仓库进行通信了喵！记得保管好你的私钥，不要丢失或泄露哦～如果有其他问题，欧尼酱随时都在这里帮你喵！😸

第一步#

1、上传公钥到你的 github ssh

https://github.com/settings/keys

2、输入以下代码

#自动覆盖公钥证书并禁止密码登录

bash <(curl -fsSL git.io/key.sh) -og 你的GITHUB用户名 -d

或者 #自动覆盖公钥证书并禁止密码登录，同时将登陆端口改为 58058

bash <(curl -fsSL git.io/key.sh) -og 你的GITHUB用户名 -p 58058 -d

脚本源代码

#!/usr/bin/env bash
#=============================================================
# https://github.com/P3TERX/SSH_Key_Installer
# Description: Install SSH keys via GitHub, URL or local files
# Version: 2.7
# Author: P3TERX
# Blog: https://p3terx.com
#=============================================================

VERSION=2.7
RED_FONT_PREFIX="\033[31m"
LIGHT_GREEN_FONT_PREFIX="\033[1;32m"
FONT_COLOR_SUFFIX="\033[0m"
INFO="[${LIGHT_GREEN_FONT_PREFIX}INFO${FONT_COLOR_SUFFIX}]"
ERROR="[${RED_FONT_PREFIX}ERROR${FONT_COLOR_SUFFIX}]"
[ $EUID != 0 ] && SUDO=sudo

USAGE() {
    echo "
SSH Key Installer $VERSION

Usage:
  bash <(curl -fsSL git.io/key.sh) [options...] <arg>

Options:
  -o	Overwrite mode, this option is valid at the top
  -g	Get the public key from GitHub, the arguments is the GitHub ID
  -u	Get the public key from the URL, the arguments is the URL
  -f	Get the public key from the local file, the arguments is the local file path
  -p	Change SSH port, the arguments is port number
  -d	Disable password login"
}

if [ $# -eq 0 ]; then
    USAGE
    exit 1
fi

get_github_key() {
    if [ "${KEY_ID}" == '' ]; then
        read -e -p "Please enter the GitHub account:" KEY_ID
        [ "${KEY_ID}" == '' ] && echo -e "${ERROR} Invalid input." && exit 1
    fi
    echo -e "${INFO} The GitHub account is: ${KEY_ID}"
    echo -e "${INFO} Get key from GitHub..."
    PUB_KEY=$(curl -fsSL https://github.com/${KEY_ID}.keys)
    if [ "${PUB_KEY}" == 'Not Found' ]; then
        echo -e "${ERROR} GitHub account not found."
        exit 1
    elif [ "${PUB_KEY}" == '' ]; then
        echo -e "${ERROR} This account ssh key does not exist."
        exit 1
    fi
}

get_url_key() {
    if [ "${KEY_URL}" == '' ]; then
        read -e -p "Please enter the URL:" KEY_URL
        [ "${KEY_URL}" == '' ] && echo -e "${ERROR} Invalid input." && exit 1
    fi
    echo -e "${INFO} Get key from URL..."
    PUB_KEY=$(curl -fsSL ${KEY_URL})
}

get_loacl_key() {
    if [ "${KEY_PATH}" == '' ]; then
        read -e -p "Please enter the path:" KEY_PATH
        [ "${KEY_PATH}" == '' ] && echo -e "${ERROR} Invalid input." && exit 1
    fi
    echo -e "${INFO} Get key from $(${KEY_PATH})..."
    PUB_KEY=$(cat ${KEY_PATH})
}

install_key() {
    [ "${PUB_KEY}" == '' ] && echo "${ERROR} ssh key does not exist." && exit 1
    if [ ! -f "${HOME}/.ssh/authorized_keys" ]; then
        echo -e "${INFO} '${HOME}/.ssh/authorized_keys' is missing..."
        echo -e "${INFO} Creating ${HOME}/.ssh/authorized_keys..."
        mkdir -p ${HOME}/.ssh/
        touch ${HOME}/.ssh/authorized_keys
        if [ ! -f "${HOME}/.ssh/authorized_keys" ]; then
            echo -e "${ERROR} Failed to create SSH key file."
        else
            echo -e "${INFO} Key file created, proceeding..."
        fi
    fi
    if [ "${OVERWRITE}" == 1 ]; then
        echo -e "${INFO} Overwriting SSH key..."
        echo -e "${PUB_KEY}\n" >${HOME}/.ssh/authorized_keys
    else
        echo -e "${INFO} Adding SSH key..."
        echo -e "\n${PUB_KEY}\n" >>${HOME}/.ssh/authorized_keys
    fi
    chmod 700 ${HOME}/.ssh/
    chmod 600 ${HOME}/.ssh/authorized_keys
    [[ $(grep "${PUB_KEY}" "${HOME}/.ssh/authorized_keys") ]] &&
        echo -e "${INFO} SSH Key installed successfully!" || {
        echo -e "${ERROR} SSH key installation failed!"
        exit 1
    }
}

change_port() {
    echo -e "${INFO} Changing SSH port to ${SSH_PORT} ..."
    if [ $(uname -o) == Android ]; then
        [[ -z $(grep "Port " "$PREFIX/etc/ssh/sshd_config") ]] &&
            echo -e "${INFO} Port ${SSH_PORT}" >>$PREFIX/etc/ssh/sshd_config ||
            sed -i "s@.*\(Port \).*@\1${SSH_PORT}@" $PREFIX/etc/ssh/sshd_config
        [[ $(grep "Port " "$PREFIX/etc/ssh/sshd_config") ]] && {
            echo -e "${INFO} SSH port changed successfully!"
            RESTART_SSHD=2
        } || {
            RESTART_SSHD=0
            echo -e "${ERROR} SSH port change failed!"
            exit 1
        }
    else
        $SUDO sed -i "s@.*\(Port \).*@\1${SSH_PORT}@" /etc/ssh/sshd_config && {
            echo -e "${INFO} SSH port changed successfully!"
            RESTART_SSHD=1
        } || {
            RESTART_SSHD=0
            echo -e "${ERROR} SSH port change failed!"
            exit 1
        }
    fi
}

disable_password() {
    if [ $(uname -o) == Android ]; then
        sed -i "s@.*\(PasswordAuthentication \).*@\1no@" $PREFIX/etc/ssh/sshd_config && {
            RESTART_SSHD=2
            echo -e "${INFO} Disabled password login in SSH."
        } || {
            RESTART_SSHD=0
            echo -e "${ERROR} Disable password login failed!"
            exit 1
        }
    else
        $SUDO sed -i "s@.*\(PasswordAuthentication \).*@\1no@" /etc/ssh/sshd_config && {
            RESTART_SSHD=1
            echo -e "${INFO} Disabled password login in SSH."
        } || {
            RESTART_SSHD=0
            echo -e "${ERROR} Disable password login failed!"
            exit 1
        }
    fi

}

while getopts "og:u:f:p:d" OPT; do
    case $OPT in
    o)
        OVERWRITE=1
        ;;
    g)
        KEY_ID=$OPTARG
        get_github_key
        install_key
        ;;
    u)
        KEY_URL=$OPTARG
        get_url_key
        install_key
        ;;
    f)
        KEY_PATH=$OPTARG
        get_loacl_key
        install_key
        ;;
    p)
        SSH_PORT=$OPTARG
        change_port
        ;;
    d)
        disable_password
        ;;
    ?)
        USAGE
        exit 1
        ;;
    :)
        USAGE
        exit 1
        ;;
    *)
        USAGE
        exit 1
        ;;
    esac
done

if [ "$RESTART_SSHD" = 1 ]; then
    echo -e "${INFO} Restarting sshd..."
    $SUDO systemctl restart sshd && echo -e "${INFO} Done."
elif [ "$RESTART_SSHD" = 2 ]; then
    echo -e "${INFO} Restart sshd or Termux App to take effect."
fi

来源#

https://www.nodeseek.com/jump?to=https%3A%2F%2Fp3terx.com%2Farchives%2Fssh-key-installer.html