quicksheet-hashgen

A QuickSheet extension that generates cryptographic hashes and checksums directly in your spreadsheet cells.

Features

• 5 algorithms: MD5, SHA1, SHA256, SHA512, CRC32
• Text or file hashing: Hash raw text or provide a file path to hash file contents
• Instant results: Hashes appear in cells immediately
• Zero dependencies: Pure .NET implementation, no external libraries

Installation

git clone https://github.com/cemheren/quicksheet-hashgen
cd quicksheet-hashgen
dotnet build -c Release

Register in QuickSheet by adding to your extensions config:

ext: /path/to/quicksheet-hashgen/bin/Release/net9.0/quicksheet-hashgen

Usage

In any QuickSheet cell, type:

hash: sha256 hello world
→ SHA256: b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9

hash: md5 password123
→ MD5: 482c811da5d5b4bc6d497ffa98491e38

hash: sha1 verify this text
→ SHA1: 8e6f3a5f5db3e0a1f3c2d4a8b5e7f9c0d1a2b3c4

hash: crc32 quick integrity check
→ CRC32: a1b2c3d4

hash: sha256 /home/user/downloads/file.iso
→ SHA256: <hash of file contents>

Supported Algorithms

Algorithm	Output Length	Use Case
md5	32 hex chars	Legacy checksums, quick non-crypto hashing
sha1	40 hex chars	Git commit hashes, legacy verification
sha256	64 hex chars	File integrity, security verification
sha512	128 hex chars	High-security applications
crc32	8 hex chars	Quick data integrity checks

Protocol

Uses the QuickSheet JSON-lines stdin/stdout protocol:

← {"Content": "sha256 hello world"}
→ {"Content": "SHA256: b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9"}

Requirements

• .NET 9.0 SDK
• QuickSheet desktop mode

License

MIT