Sewer is a programmatic Lets Encrypt(ACME) client
Sewer is a Let’s Encrypt(ACME) client.
It allows you to obtain ssl/tls certificates from Let’s Encrypt.
Sewer currently only supports the DNS mode of validation. The only currently supported DNS provider is cloudflare but I will add more as time progresses.
pip install sewer
import sewer # 1. to create a new certificate: client = sewer.Client(domain_name='example.com', CLOUDFLARE_DNS_ZONE_ID='random', CLOUDFLARE_EMAILfirstname.lastname@example.org', CLOUDFLARE_API_KEY='nsa-grade-api-key') certificate = client.cert() certificate_key = client.certificate_key account_key = client.account_key print "your certicate is:", certificate print "your certificate's key is:", certificate_key print "\n\n" print "you can write them to a file then add that file to your favourite webserver." with open('certificate.crt', 'w') as certificate_file: certificate_file.write(certificate) with open('certificate.key', 'w') as certificate_key_file: certificate_key_file.write(certificate_key) print "your account key is:", account_key print "IMPORTANT: keep your account key in a very safe and secure place." with open('account_key.key', 'w') as account_key_file: account_key_file.write(account_key) # 2. to renew a certificate: import sewer with open('account_key.key', 'r') as account_key_file: account_key = account_key_file.read() client = sewer.Client(domain_name='example.com', CLOUDFLARE_DNS_ZONE_ID='random', CLOUDFLARE_EMAILemail@example.com', CLOUDFLARE_API_KEY='nsa-grade-api-key', account_key=account_key) certificate = client.renew() certificate_key = client.certificate_key with open('certificate.crt', 'w') as certificate_file: certificate_file.write(certificate) with open('certificate.key', 'w') as certificate_key_file: certificate_key_file.write(certificate_key)
- make it DNS provider agnostic
- support more DNS providers
- add robust tests
- be able to handle SAN(subject alternative names)
- Why another ACME client? I wanted an ACME client that I could use to programmatically(as a library) acquire/get certificates. However I could not find anything satisfactory for use in Python code.
- Why is it called Sewer? Because, for the longest time now, getting certificates has felt like wading through sewers. That was before Let’s Encrypt showed up. Also, I really like the Kenyan hip hop artiste going by the name of Kitu Sewer.
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