v3.2.0

✨ Major Features & Enhancements

• [Security] Add CMAC authentication support to LEA (#28)
  • Integrated CMAC (Cipher-based Message Authentication Code) for data integrity and authenticity.
  • CMAC is now calculated and verified on all encrypted/decrypted data.
  • Documentation and code updated to reflect authentication support.

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See the full diff: v3.1.0...v3.2.0
Note: This changelog may be incomplete; see all closed issues and PRs for more.

v3.1.0

2025-06-30

LEA v3.1.0 — Windows build and auto generation of IV

Full Changelog: v3.0.0...v3.1.0

🚀 Notable Changes

• Windows Build Support

  • Official Windows-compatible build now available, expanding platform support. #30 #31

• Automatic IV Generation

  • The Initialization Vector (IV) is now generated automatically for each encryption operation, improving security and reducing user error. #29
  • Expanded metadata struct: version, mode, and IV fields are now included for better file identification and future compatibility.

• Decryption Output Improvements

  • Improved handling for writing and stripping padding on decryption, ensuring output files exactly match their original sizes.
  • Refactored binary stream writing logic to be more robust and avoid panics when handling the last block of data.

• Error Handling & Reporting

  • Enhanced error reporting and panic handling, especially for out-of-bounds slice accesses during block conversion and file writing.
  • Improved error messages and logging during encryption and decryption operations.

• Documentation & Codebase

  • Added documentation and comments to clarify cryptographic block handling and file I/O.
  • Refactored internal APIs to use []uint32 and [4]uint32 more safely and idiomatically.
  • More robust hooks for progress and UI updates.

🐞 Bug Fixes

• Fixed a runtime panic caused by out-of-range slice access when converting [4]uint32 to []byte.
• Corrected logic for writing only the necessary number of bytes on the last decrypted block, preventing file size mismatches and padding leaks.

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For all commits and details, see the complete diff.

v3.0.0

2025-06-23

LEA v3.0.0 — Major Rewrite and CLI Overhaul

🚀 What's New

• New Key Management System

  • Introduces a new armored key file format (key128.lea, key192.lea, key256.lea) with embedded metadata and SHA-256 digests.
  • Adds lea keygen CLI command for secure, interactive key generation.
  • Encryption/decryption now require the --key=<file> flag (deprecated: -ek, -es).
  • Key and seed are now validated and parsed for integrity.

• Modernized CLI and Help System

  • Fully reworked CLI flags:
    • Operations: -e/--encrypt, -d/--decrypt
    • Key: --key=<file>
    • Modes: --mode=ecb|cbc|cfb|ofb|ctr (CTR added; CBC is now default)
    • Recursion: -r/--recursive
    • Verbosity: -v/--verbose
    • Overwrite/Wipe: --iter=N
    • Help: -h/--help
    • Version: --version
  • Improved flag handling and help output.
  • -h and --version now function robustly and exit cleanly.

• New Features & Modes

  • Adds CTR (Counter) mode support.
  • Secure multi-pass file wiping after encryption/decryption (DoD 5220.22-M style).
  • Progress bar and status display improvements.

• Technical/Codebase Changes

  • Deprecated all usages of -ek/--external-key and -es/--external-seed.
  • Refactored and internalized key scheduling, fingerprinting, and digest verification.
  • Improved modularity: new packages for key generation, loading, verification.
  • Renamed and cleaned up internal state and argument handling.
  • Major refactor for safety, maintainability, and security best practices.

• Documentation

  • Updated Readme.md with new usage examples, key management, and CLI changes.
  • Added detailed help messages and legal disclaimer (for authorized testing only).

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⚠️ Breaking Changes

• Old external key/seed file flags are no longer supported.
• All scripts and automations must use the new --key syntax and keyfile format.
• Custom seed files and legacy key handling are deprecated.

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Full Changelog

v2.0.1

What's Changed

• updating docs by @KopyTKG in #15
• Development by @KopyTKG in #16
• Update help.go by @KopyTKG in #17
• Update Readme.md by @KopyTKG in #19
• Delete .github/workflows/go.yml by @KopyTKG in #21
• Development v2.0.0 by @KopyTKG in #20
• sync by @KopyTKG in #23

Full Changelog: v2.0.0...v2.0.1

v2.0.0

What's Changed

• Sync by @KopyTKG in #18

Full Changelog: v1.6.1...v2.0.0

v1.6.1

What's Changed

• Fingerprinting done by @KopyTKG in #6
• Development V1.5 by @KopyTKG in #7
• Update Readme.md by @KopyTKG in #8
• sync by @KopyTKG in #9
• Create go.yml by @KopyTKG in #10
• Update go.yml by @KopyTKG in #11
• fixing merge by @KopyTKG in #13
• Sync by @KopyTKG in #14

Full Changelog: v1.4.0...v1.6.1

v1.4.0 (CFB,OFB)

What's Changed

• v1.4 by @KopyTKG in #5

Full Changelog: v1.2.0...v1.4.0

v1.2.0

What's Changed

• Development by @KopyTKG in #2
• V1.2.0 by @KopyTKG in #3

New Contributors

• @KopyTKG made their first contribution in #2

Full Changelog: v1.1.0...v1.2.0

v1.1.0

Full Changelog: v1.0.0...v1.1.0

v1.0.0

Full Changelog: https://github.com/KopyTKG/LEA/commits/v1.0.0