python acme_python小工具： TLS 证书加密，Acme-Tiny
前言
安全传输层协议(TLS)用于在两个通信应用程序之间提供保密性和数据完整性。该协议由两层组成: TLS 记录协议(TLS Record)和 TLS 握手协议(TLS Handshake)。较低的层为 TLS 记录协议，位于某个可靠的传输协议(例如 TCP)上面，与具体的应用无关，所以，一般把TLS协议归为传输层安全协议。
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//private_key.json private_key.json
# Create a DER encoded private key
openssl asn1parse -noout -out private_key.der -genconf
# Convert to PEM
openssl rsa -in private_key.der -inform der > account.key
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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
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