40 lines
1.6 KiB
Python
40 lines
1.6 KiB
Python
import hashlib
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import os
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import OpenSSL
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# tls utils
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def get_fingerprint(tls_cert_path):
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with open(tls_cert_path, 'rb') as fd:
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data = fd.read()
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cert = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM, data)
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return hashlib.sha1(OpenSSL.crypto.dump_certificate(OpenSSL.crypto.FILETYPE_ASN1, cert)).hexdigest()
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def create_certificate(tls_key_path, tls_cert_path, USER_ID):
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key = OpenSSL.crypto.PKey()
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key.generate_key(OpenSSL.crypto.TYPE_RSA, 2048)
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with open(tls_key_path, 'wb') as fd:
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os.chmod(tls_key_path, 0o600)
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fd.write(OpenSSL.crypto.dump_privatekey(OpenSSL.crypto.FILETYPE_PEM, key))
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os.chmod(tls_key_path, 0o400)
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ca = OpenSSL.crypto.X509()
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ca.set_version(2)
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ca.set_serial_number(1)
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ca.get_subject().CN = USER_ID
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ca.gmtime_adj_notBefore(0)
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ca.gmtime_adj_notAfter(24 * 60 * 60)
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ca.set_issuer(ca.get_subject())
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ca.set_pubkey(key)
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ca.add_extensions([
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OpenSSL.crypto.X509Extension("basicConstraints", True, "CA:TRUE, pathlen:0"),
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OpenSSL.crypto.X509Extension("nsCertType", True, "sslCA"),
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OpenSSL.crypto.X509Extension("extendedKeyUsage", True,
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"serverAuth,clientAuth,emailProtection,timeStamping,msCodeInd,msCodeCom,msCTLSign,msSGC,msEFS,nsSGC"),
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OpenSSL.crypto.X509Extension("keyUsage", False, "keyCertSign, cRLSign"),
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OpenSSL.crypto.X509Extension("subjectKeyIdentifier", False, "hash", subject=ca),
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])
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ca.sign(key, "sha1")
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with open(tls_cert_path, 'wb') as fd:
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fd.write(OpenSSL.crypto.dump_certificate(OpenSSL.crypto.FILETYPE_PEM, ca))
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return get_fingerprint(tls_cert_path)
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