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tf2/tf2_src/utils/lzma/DOC/Methods.txt

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  1. 7-Zip method IDs (9.24)
  2. -----------------------
  4. Each compression or crypto method in 7z has unique binary value (ID).
  5. The length of ID in bytes is arbitrary but it can not exceed 63 bits (8 bytes).
  7. If you want to add some new ID, you have two ways:
  8. 1) Write request for allocating IDs to 7-zip developers.
  9. 2) Generate 8-bytes ID:
  11. 3F ZZ ZZ ZZ ZZ ZZ MM MM
  13. 3F - Prefix for random IDs (1 byte)
  14. ZZ ZZ ZZ ZZ ZZ - Developer ID (5 bytes). Use real random bytes.
  16. MM MM - Method ID (2 bytes)
  18. You can notify 7-Zip developers about your Developer ID / Method ID.
  20. Note: Use new ID only if old codec can not decode data encoded with new version.
  23. List of defined IDs
  24. -------------------
  26. 00 - Copy
  28. 03 - Delta
  29. 04 - x86 (BCJ)
  30. 05 - PPC (Big Endian)
  31. 06 - IA64
  32. 07 - ARM (little endian)
  33. 08 - ARM Thumb (little endian)
  34. 09 - SPARC
  35. 21 - LZMA2
  37. 02.. - Common
  38. 03 Swap
  39. - 2 Swap2
  40. - 4 Swap4
  42. 03.. - 7z
  43. 01 - LZMA
  44. 01 - Version
  46. 03 - Branch
  47. 01 - x86
  48. 03 - BCJ
  49. 1B - BCJ2
  50. 02 - PPC
  51. 05 - PPC (Big Endian)
  52. 03 - Alpha
  53. 01 - Alpha
  54. 04 - IA64
  55. 01 - IA64
  56. 05 - ARM
  57. 01 - ARM
  58. 06 - M68
  59. 05 - M68 (Big Endian)
  60. 07 - ARM Thumb
  61. 01 - ARMT
  62. 08 - SPARC
  63. 05 - SPARC
  65. 04 - PPMD
  66. 01 - Version
  68. 7F -
  69. 01 - experimental methods.
  72. 04.. - Misc
  73. 00 - Reserved
  74. 01 - Zip
  75. 00 - Copy (not used). Use {00} instead
  76. 01 - Shrink
  77. 06 - Implode
  78. 08 - Deflate
  79. 09 - Deflate64
  80. 10 - Imploding
  81. 12 - BZip2 (not used). Use {04 02 02} instead
  82. 14 - LZMA
  83. 60 - Jpeg
  84. 61 - WavPack
  85. 62 - PPMd
  86. 63 - wzAES
  87. 02 - BZip
  88. 02 - BZip2
  89. 03 - Rar
  90. 01 - Rar15
  91. 02 - Rar20
  92. 03 - Rar29
  93. 04 - Arj
  94. 01 - Arj (1,2,3)
  95. 02 - Arj 4
  96. 05 - Z
  97. 06 - Lzh
  98. 07 - Reserved for 7z
  99. 08 - Cab
  100. 09 - NSIS
  101. 01 - DeflateNSIS
  102. 02 - BZip2NSIS
  105. 06.. - Crypto
  107. F0 - Ciphers without hashing algo
  109. 01 - AES
  110. 0x - AES-128
  111. 4x - AES-192
  112. 8x - AES-256
  113. Cx - AES
  115. x0 - ECB
  116. x1 - CBC
  117. x2 - CFB
  118. x3 - OFB
  119. x4 - CTR
  121. F1 - Combine Ciphers
  122. 01 - Zip
  123. 01 - Main Zip crypto algo
  124. 03 - RAR
  125. 02 -
  126. 03 - Rar29 AES-128 + (modified SHA-1)
  127. 07 - 7z
  128. 01 - AES-256 + SHA-256
  131. ---
  132. End of document