ct_advisor
certificate-transparency-go
ct_advisor | certificate-transparency-go | |
---|---|---|
3 | 8 | |
32 | 848 | |
- | 2.7% | |
1.1 | 9.5 | |
over 1 year ago | 6 days ago | |
Erlang | Go | |
GNU General Public License v3.0 or later | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
ct_advisor
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Windows CA - Cross-Signed with a Public CA
As "hands on" as I've gotten was writing a Certificate Transparency log monitor (https://github.com/technion/ct_advisor). So nothing like actually certifying a CA - but enough to know it's crazy what people will argue here.
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Google's Certificate Transparency Search page to be discontinued May 15th, 2022
https://github.com/technion/ct_advisor
Building this was exciting, I've been proud to run it and and it predated services from Facebook or Cloudflare. I'm not sure what the future should hold however, it's hard to bring it up anywhere without being told people should just use Facebook.
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How are IPs from US, Russia, Netherlands hitting a brand new subdomain that has not been submitted anywhere?
Just noting in the absence of their search, there are several alternatives. I wrote my own service in this space: https://github.com/technion/ct_advisor
certificate-transparency-go
- Show HN: Free Certificate Monitoring via RSS
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Have governments ever been caught using a CA backdoor?
If you're talking about a certificate honored by a browser, these days they'd have to put it in a CT log, or at least obtain a "signed certificate timestamp" from a CT log: https://certificate.transparency.dev/
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UEFI Software Bill of Materials Proposal
>This feels like this might actually be a use-case for a blockchain or a Merkle Tree.
A few years ago, this idea[0] had been explored by Google as a possible application of their Trillian[1] distributed ledger, which is based on Merkle Trees.
I don't know if they've advanced adoption of Trillian for firmware, however, the website lists Go packaging[2], Certificate Transparency [3], and SigStore[4] as current applications.
have used Trillian as the basis for their Certificate Transparency implementation.[2]
[0] https://github.com/google/trillian-examples/tree/master/bina...
[1] https://transparency.dev/
[2] https://go.googlesource.com/proposal/+/master/design/25530-s...
[3] https://certificate.transparency.dev/
[4] https://www.sigstore.dev/
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Last Chance to Fix EIDAS (Mozilla)
You can find more about certificate monitoring and who are involved here
https://certificate.transparency.dev/
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Last Week's Let's Encrypt Downtime
Excellent question! The sctcheck command from https://github.com/google/certificate-transparency-go/ can be used to check the signatures of embedded SCTs.
I've also got an online tool which you can use to test a site for CT policy compliance: https://sslmate.com/labs/ct_policy_analyzer/
Example of a working site: https://sslmate.com/labs/ct_policy_analyzer/?sslmate.com
Example of one of the sites affected by the Let's Encrypt incident: https://sslmate.com/labs/ct_policy_analyzer/?thecandyshake.c...
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Golang is evil on shitty networks
The x509 package has unfortunately burned me several times, this one included. It is too anal about non-fatal errors, that Google themselves forked it (and asn1) to improve usability.
https://github.com/google/certificate-transparency-go
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Parsing Certificate Transparency end in X509Cert is nil
ogClient, err := client.New( l.URI, &http.Client{ Timeout: 10 * time.Second, Transport: &http.Transport{ TLSHandshakeTimeout: 30 * time.Second, ResponseHeaderTimeout: 30 * time.Second, MaxIdleConnsPerHost: 10, DisableKeepAlives: false, MaxIdleConns: 100, IdleConnTimeout: 90 * time.Second, ExpectContinueTimeout: 1 * time.Second, }, }, jsonclient.Options{UserAgent: "ct-go-scanlog/1.0"}, ) if err != nil { fmt.Fprintf(os.Stderr, "%s -> Failed to create new client: %s\n", l.Name, err) return } sth, err := logClient.GetSTH(context.TODO()) if err != nil { fmt.Fprintf(os.Stderr, "%s -> Failed to get SignedTreeHead: %s\n", l.Name, err) return } fmt.Printf("%s -> Number of logs: %d\n", l.Name, sth.TreeSize) index := uint64(0) // Logs MAY return fewer than the number of leaves requested. Only complete // if we actually got all the leaves we were expecting. // See more: https://github.com/google/certificate-transparency-go/blob/52d94d8cbab94d6698621839ab1a439d17ebbfb2/scanner/fetcher.go#L263 for index <= sth.TreeSize { fmt.Printf("%s -> New fetch start with index %d-%d\n", l.Name, index, index+100) entries, err := logClient.GetRawEntries(context.TODO(), int64(index), int64(index)+100) if err != nil { fmt.Fprintf(os.Stderr, "%s -> Failed to get raw entries: %s\n", l.Name, err) return } if entries == nil { fmt.Fprintf(os.Stderr, "%s -> entries is nil", l.Name) return } if DEBUG { fmt.Printf("%s -> Got %d leaf entry\n", l.Name, len(entries.Entries)) } for i := range entries.Entries { rawLogE, err := ct.RawLogEntryFromLeaf(int64(index), &entries.Entries[i]) if err != nil { fmt.Fprintf(os.Stderr, "%s -> Failed to parse leaf to raw entry at index %d: %s\n", l.Name, index, err) index++ continue } logE, err := rawLogE.ToLogEntry() if err != nil { fmt.Printf("%s -> Failed to convert raw log to log at index %d: %s\n", l.Name, index, err) index++ continue } /* * This check is true most of the time. */ if logE.X509Cert == nil { fmt.Printf("%s -> Failed to read log cert at index %d: X509Cert is nil\n", l.Name, index) index++ continue } if DEBUG { fmt.Printf("%s -> Leaf entry at %d is parsed successfuly!\n", l.Name, index) } entryChan <- *logE index++ } }
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Google's Certificate Transparency Search page to be discontinued May 15th, 2022
Yes, you can use the certificate-transparency go code to pull down from the trillian API https://github.com/google/certificate-transparency-go/blob/m...
You would need to know the index, or you could just iterate over a range
What are some alternatives?
osv.dev - Open source vulnerability DB and triage service.
trillian-examples - A place to store some examples which use Trillian APIs to build things.
libnodelay - A small wrapper library that adds the TCP_NODELAY option for all sockets.
certspotter - Certificate Transparency Log Monitor
plan9port - Plan 9 from User Space
GhidraChatGPT - Brings the power of ChatGPT to Ghidra!
ansible-rulebook
GptHidra - GptHidra is a Ghidra plugin that uses the OpenAI Chat GPT to explain functions. With GptHidra, you can easily understand the purpose and behavior of functions in your codebase. Now with GPT4 Support!