* fix: strip SHA256(host_key) prefix from Chrome 130+ cookie values
Chrome 130 (Cookie DB schema v24) prepends SHA256(domain) to cookie
values before encryption to prevent cross-domain replay attacks.
After decryption, this 32-byte hash must be verified and stripped.
Changes:
- Add stripCookieHash() that verifies SHA256(host_key) and strips
the prefix only when it matches (auto-compatible with older Chrome)
- Fix edge case: cookies with empty values (exactly 32 bytes = hash only)
- Add decrypt_test.go with v10 round-trip encryption/decryption test
- Add stripCookieHash test cases for v24+, older Chrome, empty values,
short values, and host mismatch scenarios
Closes#524
* fix: strip SHA256(host_key) prefix from Chrome 130+ cookie values
Chrome 130 (Cookie DB schema v24) prepends SHA256(domain) to cookie
values before encryption to prevent cross-domain replay attacks.
After decryption, this 32-byte hash must be verified and stripped.
Changes:
- Add stripCookieHash() that verifies SHA256(host_key) and strips
the prefix only when it matches (auto-compatible with older Chrome)
- Fix edge case: cookies with empty values (exactly 32 bytes = hash only)
- Add table-driven decrypt tests for v10/v20/DPAPI per platform
- Add Windows-specific DPAPI round-trip test using CryptProtectData
- Add shared testAESKey constant in testutil_test.go
- Add stripCookieHash tests for v24+, older Chrome, empty values,
short values, and host mismatch scenarios
- Extend lint CI to run on ubuntu, windows, and macos
Closes#524
* fix: remove DPAPI test from darwin/linux (returns nil on Linux)
DecryptWithDPAPI returns nil error on Linux (silent no-op) but error
on macOS, causing the test to fail on Ubuntu CI. DPAPI round-trip
testing is properly covered in decrypt_windows_test.go.
* fix: resolve Windows CI lint errors exposed by multi-platform lint
- Add _ = before windows.CloseHandle calls to satisfy errcheck
- Add build tag to params.go (only used on macOS/Linux, not Windows)
* fix: add .gitattributes to force LF and refactor cookie tests
- Add .gitattributes with `* text=auto eol=lf` to prevent CRLF
conversion on Windows CI causing gofumpt false positives
- Add .gitattributes to .gitignore whitelist
- Refactor stripCookieHash tests into table-driven style
* fix: address Copilot review on decrypt tests
- Assert error on wrong key instead of ignoring it (AES-CBC returns
padding error, not silent empty result)
- Guard empty plaintext in encryptWithDPAPI to prevent nil pointer panic
- Convert uint32 to int for make/copy slice bounds in Windows test
* fix: assert specific error message in wrong key decrypt test
Roger