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| author | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-03-29 16:04:01 +0100 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-03-29 16:04:01 +0100 |
| commit | 88083f8c683c18f4de68a20c863a82a9da65db8f (patch) | |
| tree | 926656892d9d80260da02ea8ea71031b140c51df /other-licenses/7zstub/src/DOC/Methods.txt | |
| parent | f999f544aad04069b03704d994a99352263f600b (diff) | |
| parent | 843e4ceffd6ce21a6e6db37419335eafdc543e18 (diff) | |
| download | UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.tar UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.tar.gz UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.tar.lz UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.tar.xz UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.zip | |
Merge branch 'master' into Sync-weave
Diffstat (limited to 'other-licenses/7zstub/src/DOC/Methods.txt')
| -rw-r--r-- | other-licenses/7zstub/src/DOC/Methods.txt | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/DOC/Methods.txt b/other-licenses/7zstub/src/DOC/Methods.txt new file mode 100644 index 000000000..11adcb0ba --- /dev/null +++ b/other-licenses/7zstub/src/DOC/Methods.txt @@ -0,0 +1,167 @@ +7-Zip method IDs for 7z and xz archives
+---------------------------------------
+
+Version: 17.01
+Date: 2017-05-27
+
+Each compression or crypto method in 7z is associated with unique binary value (ID).
+The length of ID in bytes is arbitrary but it can not exceed 63 bits (8 bytes).
+
+xz and 7z formats use same ID map.
+
+If you want to add some new ID, you have two ways:
+ 1) Write request for allocating IDs to 7-Zip developers.
+ 2) Generate 8-bytes ID:
+
+ 3F ZZ ZZ ZZ ZZ ZZ MM MM
+
+ 3F - Prefix for random IDs (1 byte)
+ ZZ ZZ ZZ ZZ ZZ - Developer ID (5 bytes). Use real random bytes.
+
+ MM MM - Method ID (2 bytes)
+
+ You can notify 7-Zip developers about your Developer ID / Method ID.
+
+ Note: Use new ID, if old codec can not decode data encoded with new version.
+
+
+List of defined IDs
+-------------------
+
+00 - Copy
+
+03 - Delta
+04 - BCJ (x86)
+05 - PPC (big-endian)
+06 - IA64
+07 - ARM (little-endian)
+08 - ARMT (little-endian)
+09 - SPARC
+
+21 - LZMA2
+
+02.. - Common
+ 03 [Swap]
+ - 2 Swap2
+ - 4 Swap4
+
+03.. - 7z
+ 01 -
+ 01 - LZMA
+
+ 03 - [Branch Codecs]
+ 01 - [x86 Codecs]
+ 03 - BCJ
+ 1B - BCJ2 (4 packed streams)
+ 02 -
+ 05 - PPC (big-endian)
+ 03 -
+ 01 - Alpha
+ 04 -
+ 01 - IA64
+ 05 -
+ 01 - ARM (little-endian)
+ 06 -
+ 05 - M68 (big-endian)
+ 07 -
+ 01 - ARMT (little-endian)
+ 08 -
+ 05 - SPARC
+
+ 04 -
+ 01 - PPMD
+
+ 7F -
+ 01 - experimental method.
+
+
+04.. - Misc codecs
+
+ 00 - Reserved
+
+ 01 - [Zip]
+ 00 - Copy (not used. Use {00} instead)
+ 01 - Shrink
+ 06 - Implode
+ 08 - Deflate
+ 09 - Deflate64
+ 0A - Imploding
+ 0C - BZip2 (not used. Use {040202} instead)
+ 0E - LZMA (LZMA-zip)
+ 5F - xz
+ 60 - Jpeg
+ 61 - WavPack
+ 62 - PPMd (PPMd-zip)
+ 63 - wzAES
+
+ 02 -
+ 02 - BZip2
+
+ 03 - [Rar]
+ 01 - Rar1
+ 02 - Rar2
+ 03 - Rar3
+ 05 - Rar5
+
+ 04 - [Arj]
+ 01 - Arj(1,2,3)
+ 02 - Arj4
+
+ 05 - [Z]
+
+ 06 - [Lzh]
+
+ 07 - Reserved for 7z
+
+ 08 - [Cab]
+
+ 09 - [NSIS]
+ 01 - DeflateNSIS
+ 02 - BZip2NSIS
+
+ F7 - External codecs (that are not included to 7-Zip)
+
+ 0x xx - reserved
+
+ 10 xx - reserved (LZHAM)
+ 01 - LZHAM
+
+ 11 xx - reserved (Tino Reichardt)
+ 01 - ZSTD
+ 02 - BROTLI
+ 04 - LZ4
+ 05 - LZ5
+ 06 - LIZARD
+
+
+06.. - Crypto
+
+ F0 - Ciphers without hashing algo
+
+ 01 - [AES]
+ 0x - AES-128
+ 4x - AES-192
+ 8x - AES-256
+ Cx - AES
+
+ x0 - ECB
+ x1 - CBC
+ x2 - CFB
+ x3 - OFB
+ x4 - CTR
+
+ F1 - Combine Ciphers
+
+ 01 - [Zip]
+ 01 - ZipCrypto (Main Zip crypto algo)
+
+ 03 - [RAR]
+ 02 -
+ 03 - Rar29AES (AES-128 + modified SHA-1)
+
+ 07 - [7z]
+ 01 - 7zAES (AES-256 + SHA-256)
+
+
+---
+End of document
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