29 lines
903 B
Python
29 lines
903 B
Python
#!/usr/bin/env python
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import argparse
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import ssl
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import hashlib
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parser = argparse.ArgumentParser(description='Compute SSL/TLS fingerprints.')
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parser.add_argument('--host', required=True)
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parser.add_argument('--port', default=8883)
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args = parser.parse_args()
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print(args.host)
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cert_pem = ssl.get_server_certificate((args.host, args.port))
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cert_der = ssl.PEM_cert_to_DER_cert(cert_pem)
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md5 = hashlib.md5(cert_der).hexdigest()
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sha1 = hashlib.sha1(cert_der).hexdigest()
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sha256 = hashlib.sha256(cert_der).hexdigest()
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print("MD5: " + md5)
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print("SHA1: " + sha1)
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print("SHA256: " + sha256)
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print("\nSHA1 as array initializer:")
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print("const uint8_t fingerprint[] = {0x" + ", 0x".join([sha1[i:i+2] for i in range(0, len(sha1), 2)]) + "};")
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print("\nSHA1 as function call:")
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print("mqttClient.addServerFingerprint((const uint8_t[]){0x" + ", 0x".join([sha1[i:i+2] for i in range(0, len(sha1), 2)]) + "});")
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