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132 lines
2.6 KiB
132 lines
2.6 KiB
7-Zip method IDs (9.24) |
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----------------------- |
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Each compression or crypto method in 7z has unique binary value (ID). |
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The length of ID in bytes is arbitrary but it can not exceed 63 bits (8 bytes). |
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If you want to add some new ID, you have two ways: |
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1) Write request for allocating IDs to 7-zip developers. |
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2) Generate 8-bytes ID: |
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3F ZZ ZZ ZZ ZZ ZZ MM MM |
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3F - Prefix for random IDs (1 byte) |
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ZZ ZZ ZZ ZZ ZZ - Developer ID (5 bytes). Use real random bytes. |
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MM MM - Method ID (2 bytes) |
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You can notify 7-Zip developers about your Developer ID / Method ID. |
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Note: Use new ID only if old codec can not decode data encoded with new version. |
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List of defined IDs |
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------------------- |
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00 - Copy |
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03 - Delta |
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04 - x86 (BCJ) |
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05 - PPC (Big Endian) |
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06 - IA64 |
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07 - ARM (little endian) |
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08 - ARM Thumb (little endian) |
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09 - SPARC |
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21 - LZMA2 |
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02.. - Common |
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03 Swap |
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- 2 Swap2 |
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- 4 Swap4 |
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03.. - 7z |
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01 - LZMA |
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01 - Version |
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03 - Branch |
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01 - x86 |
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03 - BCJ |
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1B - BCJ2 |
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02 - PPC |
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05 - PPC (Big Endian) |
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03 - Alpha |
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01 - Alpha |
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04 - IA64 |
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01 - IA64 |
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05 - ARM |
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01 - ARM |
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06 - M68 |
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05 - M68 (Big Endian) |
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07 - ARM Thumb |
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01 - ARMT |
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08 - SPARC |
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05 - SPARC |
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04 - PPMD |
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01 - Version |
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7F - |
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01 - experimental methods. |
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04.. - Misc |
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00 - Reserved |
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01 - Zip |
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00 - Copy (not used). Use {00} instead |
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01 - Shrink |
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06 - Implode |
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08 - Deflate |
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09 - Deflate64 |
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10 - Imploding |
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12 - BZip2 (not used). Use {04 02 02} instead |
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14 - LZMA |
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60 - Jpeg |
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61 - WavPack |
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62 - PPMd |
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63 - wzAES |
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02 - BZip |
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02 - BZip2 |
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03 - Rar |
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01 - Rar15 |
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02 - Rar20 |
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03 - Rar29 |
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04 - Arj |
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01 - Arj (1,2,3) |
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02 - Arj 4 |
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05 - Z |
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06 - Lzh |
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07 - Reserved for 7z |
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08 - Cab |
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09 - NSIS |
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01 - DeflateNSIS |
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02 - BZip2NSIS |
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06.. - Crypto |
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F0 - Ciphers without hashing algo |
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01 - AES |
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0x - AES-128 |
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4x - AES-192 |
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8x - AES-256 |
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Cx - AES |
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x0 - ECB |
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x1 - CBC |
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x2 - CFB |
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x3 - OFB |
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x4 - CTR |
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F1 - Combine Ciphers |
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01 - Zip |
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01 - Main Zip crypto algo |
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03 - RAR |
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02 - |
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03 - Rar29 AES-128 + (modified SHA-1) |
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07 - 7z |
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01 - AES-256 + SHA-256 |
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--- |
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End of document
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