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Install sha1dc with Homebrew

Tool to detect SHA-1 collisions in files, including SHAttered. Version 1.0.3 via Homebrew; verified from local package data.

Install commandSecurity notes

install

Additional install commands

macOS

Homebrewverified · 100%
brew install sha1dc

local Homebrew formula metadata

overview

Package summary

Tool to detect SHA-1 collisions in files, including SHAttered

Commands and aliases

  • sha1dcsum
  • sha1dcsum_partialcoll

security posture

Risk level: green

narrow executable package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

  • narrow executable package without higher-risk signals

Signals

  • metadata:no-higher-risk-signals

Install behavior

  • No Homebrew bottle metadata was recorded.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

executables

Installed executables

CommandKindExposureNote
sha1dcsumexecutableindexed executableDiscovered from the local executable index.
sha1dcsum_partialcollexecutableindexed executableDiscovered from the local executable index.

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-08-03
manager version1.0.3
manager updated
local dataunknown
upstreamnot available
latest detectednot detected
  • okNo freshness warnings were generated.

install metadata

Package metadata

Package keybrew:sha1dc
Version1.0.3
Package managerHomebrew
Homepagehttps://github.com/cr-marcstevens/sha1collisiondetection
Repositoryhttps://github.com/cr-marcstevens/sha1collisiondetection
Bottlenot recorded
Servicenone declared

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Used sources

  • Geiger risk classifier
  • cross-ecosystem install command graph
  • pkg.so package database
  • pkgdb category and tag curation