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pdftract/crates/pdftract-core/src
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jedarden a62913f25d feat(pdftract-1z0qt): implement encryption detection + RC4/AES-128/AES-256 decryption 
Implement decrypt feature with RC4, AES-128, and AES-256 decryption support
for encrypted PDFs per PDF 1.7/2.0 spec.

Core components:
- detection.rs: Parse /Encrypt dictionary, validate encryption metadata
- rc4.rs: V=1 R=2 (40-bit) and V=2 R=3 (40-128 bit) key derivation
- aes_128.rs: V=4 R=4 AES-128 CBC with PKCS#7 padding
- aes_256.rs: V=5 R=5/6 AES-256 with SHA-256/384/512 key derivation
- decryptor.rs: Unified API for password validation and stream/string decryption

Integration:
- extract_pdf: Detect encryption and validate passwords after xref loading
- CLI: Exit code 3 for encryption errors (wrong password, unsupported)
- Password sources: --password-stdin, PDFTRACT_PASSWORD, --password VALUE (opt-in)

Password validation: Empty string first, then user-provided. Wrong
password emits ENCRYPTION_UNSUPPORTED diagnostic and exits with code 3.

Tests: Unit tests for RC4, AES-128, AES-256 key derivation and
validation. All pass with `cargo test --features decrypt`.

Refs: Plan Phase 1.4 line 1114, EC-04/EC-05/EC-06, PDF spec 7.6

Co-Authored-By: Claude Code <noreply@anthropic.com>
2026-05-28 03:22:36 -04:00
..
annotation feat(pdftract-4hle): implement 7.6.4 links + annotations JSON output 2026-05-25 07:44:12 -04:00
attachment feat(pdftract-3j2u): implement 50 MB size limit + base64 encoding for attachments 2026-05-25 11:42:28 -04:00
cache feat(pdftract-2okbq): implement TH-10 cache poisoning protection 2026-05-26 21:09:54 -04:00
encryption feat(pdftract-1z0qt): implement encryption detection + RC4/AES-128/AES-256 decryption 2026-05-28 03:22:36 -04:00
fingerprint feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
font fix(pdftract-63ka2): AES-128 test buffer allocation for PKCS#7 padding 2026-05-28 01:30:33 -04:00
forms feat(pdftract-5qca): implement form_fields JSON output + schema integration 2026-05-24 14:36:03 -04:00
glyph feat(pdftract-1q19p): implement OCG /OC tag tracking with is_hidden flag 2026-05-26 22:25:27 -04:00
layout feat(pdftract-1ofnz): implement detect_line_direction with unicode-bidi 2026-05-28 00:33:49 -04:00
ocr/preprocessing feat(pdftract-3h9xo): implement threads JSON output + schema integration 2026-05-25 13:40:15 -04:00
output docs(pdftract-1t5sj): verify book_chapter profile implementation complete 2026-05-27 22:38:46 -04:00
parser fix(pdftract-63ka2): AES-128 test buffer allocation for PKCS#7 padding 2026-05-28 01:30:33 -04:00
profiles feat(pdftract-64p5): implement classify CLI subcommand and --auto flag 2026-05-24 15:16:56 -04:00
receipts feat(pdftract-4yspv): implement OCR receipt fallback 2026-05-25 19:53:42 -04:00
render feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
schema test(pdftract-4c8qu): add page_label tests and fix JSON schema 2026-05-25 14:43:31 -04:00
signature feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
source test(pdftract-1uhee): fix MmapSource test assertions 2026-05-28 02:29:42 -04:00
span fix(pdftract-37qim): fix span compilation errors, verify multi-output CLI parsing 2026-05-28 01:29:07 -04:00
table feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
threads feat(pdftract-4li3d): implement security constraints for serve mode 2026-05-26 18:47:51 -04:00
atomic_file_writer.rs feat(pdftract-68wfa): implement AtomicFileWriter for atomic file writes 2026-05-24 13:02:37 -04:00
audit.rs fix: resolve compilation errors across codebase 2026-05-25 08:38:04 -04:00
classify.rs feat(pdftract-4li3d): implement security constraints for serve mode 2026-05-26 18:47:51 -04:00
confidence.rs feat(pdftract-2etcd): implement map_confidence_source function 2026-05-28 00:46:19 -04:00
content_stream.rs fix(pdftract-63ka2): AES-128 test buffer allocation for PKCS#7 padding 2026-05-28 01:30:33 -04:00
diagnostics.rs fix(pdftract-63ka2): AES-128 test buffer allocation for PKCS#7 padding 2026-05-28 01:30:33 -04:00
document.rs feat(pdftract-4li3d): implement security constraints for serve mode 2026-05-26 18:47:51 -04:00
dpi.rs feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
extract.rs feat(pdftract-1z0qt): implement encryption detection + RC4/AES-128/AES-256 decryption 2026-05-28 03:22:36 -04:00
graphics_state.rs feat(pdftract-1kdzu): implement TJ operator with kerning and word boundary detection 2026-05-26 16:44:05 -04:00
hybrid.rs feat(pdftract-1t5sj): implement book_chapter profile with fixtures and tests 2026-05-27 22:30:09 -04:00
javascript.rs feat(pdftract-4li3d): implement security constraints for serve mode 2026-05-26 18:47:51 -04:00
lib.rs feat(pdftract-1mmq9): add PdfSource trait with MmapSource and FileSource implementations 2026-05-28 01:57:25 -04:00
markdown.rs test(pdftract-1sxpa): complete inline image header parser implementation 2026-05-27 22:18:09 -04:00
ocr.rs feat(pdftract-6dki1): implement histogram stretch contrast normalization 2026-05-24 10:30:20 -04:00
options.rs fix(pdftract-63ka2): AES-128 test buffer allocation for PKCS#7 padding 2026-05-28 01:30:33 -04:00
page_class.rs fix(pdftract-tuky): fix color clamping test and verify Phase 3.1 coordinator 2026-05-26 16:36:01 -04:00
pages.rs fix(pdftract-63ka2): AES-128 test buffer allocation for PKCS#7 padding 2026-05-28 01:30:33 -04:00
preprocess.rs feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
render.rs feat(pdftract-axcri): record inline images as ImageXObject entries 2026-05-24 07:41:50 -04:00
semaphore.rs feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
span_flags.rs feat(pdftract-cbrbg): implement span flag detector for Phase 4.1 2026-05-24 07:28:25 -04:00
text.rs fix(pdftract-38p8h): add fallback for empty block.spans in invisible text filter 2026-05-28 00:39:37 -04:00
url_validation.rs feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
word_boundary.rs feat(pdftract-h2s0z): implement adaptive word boundary detector 2026-05-24 06:06:56 -04:00