Hash Utilities

Generate and verify hashes (MD5, SHA variants, CRC32, HMAC, BLAKE2) for strings and files with streaming support and no external dependencies.

🔐 Hash Toolkit

Author: Lin Hui | GitHub | MIT License | v1.0.0

Compute and verify hashes for strings, files, and data. Supports MD5, SHA1, SHA256, SHA512, CRC32, HMAC, and BLAKE2.

✨ Features

• String hashing — Hash any text with your choice of algorithm
• File hashing — Compute hash of any file (streaming for large files)
• Verify — Compare a hash against expected value (pass/fail)
• Batch — Hash multiple files at once
• HMAC — Keyed-hash message authentication codes
• CRC32 — Quick checksums for data integrity
• BLAKE2 — Modern, fast, secure hash algorithm

🚀 Usage

Calculate the SHA256 hash of the string "hello world"

Compute the MD5 hash of the file /path/to/file.zip

Verify that the SHA256 hash of download.iso matches abc123def...

Generate HMAC-SHA256 signature for "message" with key "secret"

Calculate CRC32 checksum for data.bin

⚙️ Technical Details

• Runtime: Python 3.6+
• Dependencies: Zero (stdlib only: hashlib, hmac, zlib, binascii)
• Algorithms: MD5, SHA1, SHA224, SHA256, SHA384, SHA512, BLAKE2b, BLAKE2s, CRC32
• Large files: Streaming with 8MB chunks