# 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

```sh
sudo av install brew:sha1dc
```

Additional install commands:

### macOS

- Homebrew (100%):

```sh
brew install sha1dc
```

  Evidence: local Homebrew formula metadata

## Package facts

- **Package key:** brew:sha1dc
- **Package manager:** Homebrew
- **Version:** 1.0.3
- **Source summary:** Tool to detect SHA-1 collisions in files, including SHAttered
- **Homepage:** <https://github.com/cr-marcstevens/sha1collisiondetection>
- **Repository:** <https://github.com/cr-marcstevens/sha1collisiondetection>
- **Generated:** 2026-08-03T19:37:03+00:00

## Executables

- sha1dcsum (alias)
- sha1dcsum_partialcoll (alias)

## Install behavior

- Bottle: not available

## Freshness

- Page generated: 2026-08-03
- Package-manager version: 1.0.3

## Security Notes

narrow executable package without higher-risk signals.

- **Geiger risk:** green / low
- narrow executable package without higher-risk signals


## Combined YAML source

View the package source record on GitHub. [combined/sha1dc.yml](https://github.com/mxcl/pkgdb/blob/main/combined/sha1dc.yml)


## Sources

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