zeek/scripts/policy/protocols/ssl/log-certs-base64.zeek
Patrick Kelley 8fd444092b initial
2025-05-07 15:35:15 -04:00

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##! This script is used to extract certificates seen on the wire to Zeek log files.
##! The certificates are base64-encoded and written to ssl.log, to the newly added cert
##! field.
@load base/protocols/ssl
@load base/files/x509
redef record X509::Info += {
## Base64 encoded X.509 certificate.
cert: string &log &optional;
};
event x509_certificate(f: fa_file, cert_ref: opaque of x509, cert: X509::Certificate) &priority=1
{
if ( ! f$info?$x509 )
return;
f$info$x509$cert = encode_base64(x509_get_certificate_string(cert_ref));
}