Index: third_party/lzma/v4_65/files/Methods.txt |
diff --git a/third_party/lzma/v4_65/files/Methods.txt b/third_party/lzma/v4_65/files/Methods.txt |
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-7-Zip method IDs (4.65) |
------------------------ |
- |
-Each compression or crypto method in 7z has unique binary value (ID). |
-The length of ID in bytes is arbitrary but it can not exceed 63 bits (8 bytes). |
- |
-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 only if old codec can not decode data encoded with new version. |
- |
- |
-List of defined IDs |
-------------------- |
- |
-00 - Copy |
- |
-02 - Common |
- 03 Swap |
- - 2 Swap2 |
- - 4 Swap4 |
- |
-03 - 7z |
- 01 - LZMA |
- 01 - Version |
- |
- 03 - Branch |
- 01 - x86 |
- 03 - BCJ |
- 1B - BCJ2 |
- 02 - PPC |
- 05 - PPC (Big Endian) |
- 03 - Alpha |
- 01 - Alpha |
- 04 - IA64 |
- 01 - IA64 |
- 05 - ARM |
- 01 - ARM |
- 06 - M68 |
- 05 - M68 (Big Endian) |
- 07 - ARM Thumb |
- 01 - ARMT |
- 08 - SPARC |
- 05 - SPARC |
- |
- 04 - PPMD |
- 01 - Version |
- |
- 7F - |
- 01 - experimental methods. |
- |
- |
-04 - Misc |
- 00 - Reserved |
- 01 - Zip |
- 00 - Copy (not used). Use {00} instead |
- 01 - Shrink |
- 06 - Implode |
- 08 - Deflate |
- 09 - Deflate64 |
- 12 - BZip2 (not used). Use {04 02 02} instead |
- 02 - BZip |
- 02 - BZip2 |
- 03 - Rar |
- 01 - Rar15 |
- 02 - Rar20 |
- 03 - Rar29 |
- 04 - Arj |
- 01 - Arj (1,2,3) |
- 02 - Arj 4 |
- 05 - Z |
- 06 - Lzh |
- 07 - Reserved for 7z |
- 08 - Cab |
- 09 - NSIS |
- 01 - DeflateNSIS |
- 02 - BZip2NSIS |
- |
- |
-06 - Crypto |
- 00 - |
- 01 - AES |
- 0x - AES-128 |
- 4x - AES-192 |
- 8x - AES-256 |
- Cx - AES |
- |
- x0 - ECB |
- x1 - CBC |
- x2 - CFB |
- x3 - OFB |
- |
- 07 - Reserved |
- 0F - Reserved |
- |
- F0 - Misc Ciphers (Real Ciphers without hashing algo) |
- |
- F1 - Misc Ciphers (Combine) |
- 01 - Zip |
- 01 - Main Zip crypto algo |
- 03 - RAR |
- 02 - |
- 03 - Rar29 AES-128 + (modified SHA-1) |
- 07 - 7z |
- 01 - AES-256 + SHA-256 |
- |
-07 - Hash (subject to change) |
- 00 - |
- 01 - CRC |
- 02 - SHA-1 |
- 03 - SHA-256 |
- 04 - SHA-384 |
- 05 - SHA-512 |
- |
- F0 - Misc Hash |
- |
- F1 - Misc |
- 03 - RAR |
- 03 - Rar29 Password Hashing (modified SHA1) |
- 07 - 7z |
- 01 - SHA-256 Password Hashing |
- |
- |
- |
- |
---- |
-End of document |