mirror of
https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git
synced 2026-06-11 21:54:56 +03:00
mukul975
27c6414ca5
Complete skill folder anatomy across all cybersecurity skills: - scripts/agent.py: 80-150 line Python agents using real libraries (impacket, boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.) - references/api-reference.md: real API documentation with method signatures - LICENSE: MIT license for all skill folders
1.5 KiB
1.5 KiB
API Reference: Log Integrity with Blockchain Hash Chaining
hashlib - SHA-256 Hashing
import hashlib
hash_hex = hashlib.sha256("data".encode("utf-8")).hexdigest()
# Returns 64-char hex string
Chain Entry Structure
{
"index": 0,
"timestamp": "2024-01-15T10:30:00.000Z",
"content_hash": "SHA256(log_entry_text)",
"prev_hash": "0000...0000 (genesis) or previous chain_hash",
"chain_hash": "SHA256(prev_hash + timestamp + content_hash)",
"content_preview": "first 200 chars of log entry"
}
Chain Construction Algorithm
genesis_hash = "0" * 64
for each log_entry:
content_hash = SHA256(log_entry)
chain_hash = SHA256(prev_hash + timestamp + content_hash)
store(index, timestamp, content_hash, prev_hash, chain_hash)
prev_hash = chain_hash
Verification Algorithm
prev_hash = genesis_hash
for each entry in chain:
expected = SHA256(prev_hash + entry.timestamp + entry.content_hash)
if expected != entry.chain_hash:
TAMPER DETECTED at index
prev_hash = entry.chain_hash
Checkpoint Structure
{
"timestamp": "2024-01-15T12:00:00Z",
"chain_length": 1000,
"head_hash": "chain_hash of last entry",
"head_index": 999,
"checkpoint_hash": "SHA256(chain_length + head_hash)"
}
Tamper Detection Properties
- Modifying any entry invalidates all subsequent chain_hashes
- First break index identifies the tampered entry
- Checkpoint comparison detects retroactive modifications