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2y ago |
import ssl |
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from cryptography import x509 |
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from cryptography.hazmat.backends import default_backend |
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from OpenSSL import crypto |
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def get_cert_SANs(cert: bytes): |
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cert = x509.load_pem_x509_certificate(cert, default_backend()) |
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san_list = [] |
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for extension in cert.extensions: |
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if isinstance(extension.value, x509.SubjectAlternativeName): |
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san = extension.value |
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for name in san: |
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san_list.append(name.value) |
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return san_list |
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def generate_certificate(): |
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k = crypto.PKey() |
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k.generate_key(crypto.TYPE_RSA, 4096) |
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cert = crypto.X509() |
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cert.get_subject().CN = "Gozargah" |
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cert.gmtime_adj_notBefore(0) |
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cert.gmtime_adj_notAfter(100 * 365 * 24 * 60 * 60) |
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cert.set_issuer(cert.get_subject()) |
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cert.set_pubkey(k) |
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cert.sign(k, "sha512") |
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cert_pem = crypto.dump_certificate(crypto.FILETYPE_PEM, cert).decode( |
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"utf-8" |
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) |
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key_pem = crypto.dump_privatekey(crypto.FILETYPE_PEM, k).decode("utf-8") |
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return {"cert": cert_pem, "key": key_pem} |
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def create_secure_context( |
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client_cert: str, |
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client_key: str, |
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trusted: str, |
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) -> ssl.SSLContext: |
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ctx = ssl.create_default_context(cafile=trusted) |
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ctx.load_cert_chain(client_cert, client_key) |
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ctx.set_ciphers("ECDHE+AESGCM:ECDHE+CHACHA20:DHE+AESGCM:DHE+CHACHA20") |
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ctx.set_alpn_protocols(["h2"]) |
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ctx.check_hostname = False |
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ctx.verify_mode = ssl.CERT_NONE |
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return ctx |