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TLS 证书加密工具 Acme-Tiny

Acme-Tiny 是采用Python编写的,一款轻量级的TLS 证书加密工具。

使用

获取秘钥

openssl genrsa 4096 > account.key

使用现有的秘钥

# Download the script
wget -O - "https://gist.githubusercontent.com/JonLundy/f25c99ee0770e19dc595/raw/6035c1c8938fae85810de6aad1ecf6e2db663e26/conv.py" > conv.py

# Copy your private key to your working directory
cp /etc/letsencrypt/accounts/acme-v01.api.letsencrypt.org/directory/<id>/private_key.json private_key.json

# Create a DER encoded private key
openssl asn1parse -noout -out private_key.der -genconf <(python conv.py private_key.json)

# Convert to PEM
openssl rsa -in private_key.der -inform der > account.key

创建证书签名请求 (CSR) 的域名

#generate a domain private key (if you haven't already)
openssl genrsa 4096 > domain.key

#for a single domain
openssl req -new -sha256 -key domain.key -subj "/CN=yoursite.com" > domain.csr

#for multiple domains (use this one if you want both www.yoursite.com and yoursite.com)
openssl req -new -sha256 -key domain.key -subj "/" -reqexts SAN -config <(cat /etc/ssl/openssl.cnf <(printf "[

关联到网站主机

#example for nginx
server {
    listen 80;
    server_name yoursite.com www.yoursite.com;

    location /.well-known/acme-challenge/ {
        alias /var/www/challenges/;
        try_files $uri =404;
    }

    ...the rest of your config
}

获取签名证书

#run the script on your server
python acme_tiny.py --account-key ./account.key --csr ./domain.csr --acme-dir /var/www/challenges/ > ./signed.crt

安装证书

server {
    listen 443;
    server_name yoursite.com, www.yoursite.com;

    ssl on;
    ssl_certificate /path/to/chained.pem;
    ssl_certificate_key /path/to/domain.key;
    ssl_session_timeout 5m;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA;
    ssl_session_cache shared:SSL:50m;
    ssl_dhparam /path/to/server.dhparam;
    ssl_prefer_server_ciphers on;

    ...the rest of your config
}

server {
    listen 80;
    server_name yoursite.com, www.yoursite.com;

    location /.well-known/acme-challenge/ {
        alias /var/www/challenges/;
        try_files $uri =404;
    }

    ...the rest of your config
}

设置自动更新

#!/usr/bin/shpython /path/to/acme_tiny.py --account-key /path/to/account.key --csr /path/to/domain.csr --acme-dir /var/www/challenges/ > /tmp/signed.crt || exitwget -O - https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.pem > intermediate.pem
cat /tmp/signed.crt intermediate.pem > /path/to/chained.pem
service nginx reload

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