axiom-hash-multi

Multi-algorithm hash generator (MD5/SHA-1/SHA-256/SHA-512/BLAKE2b) — deterministic, byte-to-byte, zero dependencies. Use when you need to hash a file or string with multiple algorithms at once, with no LLM, no cloud, no hallucination.

Version: 1.1.3 Axioma Tools — Skill #1 (Phase 1) Cluster: Axioma

What this skill does

Calculates 5 hash algorithms at once (or just one) on a file or bytes input:

• MD5
• SHA-1
• SHA-256
• SHA-512
• BLAKE2b (64-byte digest)

Differentiators:

• Zero dependencies (pure Python stdlib)
• Byte-to-byte deterministic (same input → same hash, always)
• Streaming for large files (no RAM bloat)
• No LLM, no cloud, no hallucination
• Multiple algorithms in one call (--all flag)

When to use this skill

• ✅ Hash a file to verify integrity
• ✅ Get multiple algorithms at once for cross-verification
• ✅ Fingerprint files for deduplication
• ✅ Hash a string without writing a script
• ✅ Bulk hash a directory (loop with this CLI)
• ✅ Verify a file matches an expected hash (--compare)
• ✅ Verify all hashes in a MANIFEST file (--verify-manifest)
• ✅ Get structured JSON output for scripts (--json)
• ❌ When you need HMAC or password hashing (use bcrypt/argon2)
• ❌ When you need cryptographic signatures (use GPG/age)

Usage

CLI

# Single algorithm (default: SHA-256)
python3 axiom_hash_multi.py <file>
python3 axiom_hash_multi.py "my string" --string
echo "data" | python3 axiom_hash_multi.py --stdin

# Specific algorithm
python3 axiom_hash_multi.py <file> --algo md5
python3 axiom_hash_multi.py <file> --algo sha512

# All algorithms at once
python3 axiom_hash_multi.py <file> --all

# Verify against expected hash (exit 0 if match, 1 if not)
python3 axiom_hash_multi.py <file> --algo sha256 --compare=<expected_hex>

# Verify a MANIFEST.txt file (all hashes)
python3 axiom_hash_multi.py --verify-manifest MANIFEST.txt

# JSON output (structured for scripts)
python3 axiom_hash_multi.py <file> --all --json

Python API

from axiom_hash_multi import hash_bytes, hash_file, hash_all, hash_file_all, verify_manifest

# Bytes
digest = hash_bytes(b"hello", "sha256")

# File (streaming)
digest = hash_file("path/to/file", "sha256")

# All algorithms
results = hash_all(b"test")  # dict of 5 algorithms
results = hash_file_all("path/to/file")  # dict of 5 algorithms

# Verify MANIFEST
result = verify_manifest("MANIFEST.txt")  # {"verified": True, "checked": 12, "failed": 0}

Validation status

Check	Status
Unit tests (≥10 cases)	✅ 24 tests + 16 stress tests = 40 cases
Performance <100ms	✅ Validated for <100MB
Security (no injection)	✅ Pure stdlib, no eval/subprocess
Determinism byte-to-byte	✅ hashlib spec + 1000-runs test
0 LLM/KAN dependency	✅ stdlib only (hashlib, pathlib, json)
Doc (README + SKILL.md)	✅ Complete for v1.1.0
License	Apache-2.0

Stress test results (9 groups, 40+ cases): all green

Last updated: 2026-06-14 — v1.1.0 release with /dev/null fix + 4 new features.