ctfetch

Tools for working with Certificate Transparency log tiles.

Install

go install ./cmd/ctfetch
go install ./cmd/tiledump

Commands

ctfetch

Fetch and dump leaf entries from CT logs.

ctfetch [--dumpall] <log-url> <leaf-index>

Examples:

Dump a specific entry:

ctfetch https://halloumi2026h1.mon.ct.ipng.ch 629794635

Dump all entries in the tile:

ctfetch --dumpall https://halloumi2026h1.mon.ct.ipng.ch 629794635

Options:

--dumpall: Dump all entries in the tile instead of just the specified leaf

tiledump

Read a CT log tile file or URL and dump contents. Automatically detects and handles both data tiles (log entries) and hash tiles (Merkle tree hashes).

tiledump <tile-file-or-url>

Examples:

Data tile from a file:

tiledump tile.data

Data tile from a URL:

tiledump https://halloumi2026h1.mon.ct.ipng.ch/tile/data/x002/x460/135

Hash tile from a URL:

tiledump https://halloumi2026h1.mon.ct.ipng.ch/tile/0/x100/999