v0.1.3

🚀 usr v0.1.3 — Complete Rewrite

This release is a full ground-up rewrite of usr, fixing all critical bugs and implementing every missing or placeholder feature from v0.1.0. The library is now cryptographically correct, spec-accurate, fully tested, and production-usable.

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🔐 Cryptography

• Fixed SHA-256 two-block padding bug (previously broken for len % 64 ≥ 56)
• Fixed AES-256 decryption — replaced incorrect 3-line stub with full 14-round inverse cipher
• Added SHA-512 (streaming + one-shot APIs)
• Added HMAC-SHA256 and PBKDF2-HMAC-SHA256
• Added AES-256-CBC (PKCS#7) and AES-256-CTR modes
• Fixed CRC-32 double-XOR bug (now correctly produces 0xCBF43926)
• Added cryptographically secure random bytes via getrandom, /dev/urandom, and CryptGenRandom

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📝 Text & Encoding

• Added Base64 (standard + URL-safe), hex, URL, and HTML entity encode/decode

• Rewrote UTF-8 / UTF-16 utilities: decode, encode, validate, codepoint count, offset conversion

  • UTF-16 offsets follow Telegram spec (surrogate pairs count as 2 units)

• Rewrote HTML parser:

  • Added <code>, <pre>, <tg-spoiler>
  • Fixed missing > in href, buffer overflow, and escaping issues

• Rewrote entities_to_html:

  • Previously a placeholder that appended tags
  • Now inserts entities at correct UTF-16 positions using an event-sorted algorithm

• Implemented usr_entities_to_markdown (previously declared but never implemented)

• Completed Markdown V2 parser:

  • Backslash escapes, ||spoiler||, __underline__, ~strike~
  • Triple-backtick code blocks, inline links
  • Correct UTF-16 offset handling

• Fixed entity normalization:

  • Replaced overlap-dropping logic with an interval stack to allow proper nesting

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🏗 Infrastructure

• Rewrote CMakeLists.txt:

  • Fixed broken src/core/*.c glob
  • Added all test and benchmark targets
  • Added proper install rules

• Added 5 C test suites:

  • Crypto (15 tests)
  • Encoding (23 tests)
  • UTF-8 (15 tests)
  • Roundtrip (13 tests)
  • Fuzz (5,000 iterations)
  • ✅ All tests pass

• Added benchmarks:

  • SHA-256 ~220 MB/s
  • AES-IGE ~40 MB/s
  • Base64 ~1,800 MB/s

• Added full_demo.c covering all major APIs

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🐍 Python Bindings

• Added missing _lib.py (package was previously non-functional without it)

• Added _structs.py with EntityType enum and shared ctypes definitions

• Fixed __init__.py shadow redefinition of from_text / to_text

• Rewrote all Python modules:

  • crypto, encoding, entities, html, markdown, binary

• All 15 Python integration tests pass

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📦 Version

• 0.1.0 → 0.1.3

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📝 What’s Changed

• docs: clarify local build workflow and pre-release status

  • by @ankit-chaubey in #1

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👤 New Contributors

• @ankit-chaubey made their first contribution in #1

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Full Changelog: v0.1.2...v0.1.3

v0.1.2b1

Full Changelog: v0.1.1.post1...v0.1.2b1

v0.1.1.post1 — Initial Public Pre-Release

This is the first public pre-release of usr.

What this release represents

• Initial snapshot of the project after internal experimentation
• Early exposure of the core architecture
• A foundation release for learning, exploration, and feedback

Scope

• C core with optional Python bindings
• Binary utilities, cryptographic primitives, and entity processing
• APIs are unstable and may change without notice

Status

• Pre-release / experimental
• Not intended for production use
• Published to establish a public baseline version

This release intentionally prioritizes transparency and correctness over completeness.