Support for Tree Tiger Hash and Merkle Hash Tree #77
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multiformats/multihash#55 ## Merkle Hash Tree multihash `<merkle-hash-tree-mc>-<len>-(<hash-tree-type>-(<multihash>[<multihash>...]))` `<0x0400>-<len>-(<0x01>-(<multihash>[<multihash>...]))` 0x0400 - Merkle Hash Tree (1024 decimal) multicodec value 0x01 - Hash Tree Type with this settings: * Data segment size - 1024 bytes * Data prefix - one byte with value 0 (0x00) * Hash pair prefix - one byte with value 1 (0x01) * Unpaired hashes move on next level unchanged. * Multihashes in tree multihash packed in breadth-first order from root to leafs. ## Tiger multihash: `<tiger-mc>-<len>-<hash>` `<0x7A>-<0x18>-<0x3293ac630c13f0245f92bbb1766e16167a4e58492dde73f3>` 0x7A - Tiger-hash multicodec value ## Tree Tiger multihash: `<merkle-hash-tree-mc>-<len>-(<hash-tree-type>-(<tiger-root-multihash>[<tiger-multihash>...]))` ## Tree sha2-256 multihash: `<merkle-hash-tree-mc>-<len>-(<hash-tree-type>-(<sha2-256-root-multihash>[<sha2-256-multihash>...]))` ## Links: [Tree Hash EXchange format (THEX)](https://adc.sourceforge.io/draft-jchapweske-thex-02.html#anchor2) [Tiger: A Fast New Cryptographic Hash Function (Designed in 1995)](http://www.cs.technion.ac.il/~biham/Reports/Tiger/) wikipedia: [Tiger (cryptography)](https://en.wikipedia.org/wiki/Tiger_(cryptography)) wikipedia: [Merkle tree#Tiger tree hash](https://en.wikipedia.org/wiki/Merkle_tree#Tiger_tree_hash) License: MIT Signed-off-by: Ivan <[email protected]>
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I write package that calc hash tree root: https://github.com/ivan386/go-hash-tree |
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multiformats/multihash#55
Merkle Hash Tree multihash
<merkle-hash-tree-mc>-<len>-(<hash-tree-type>-<hash-mc>-<hash-len>-(<hash-value>)-[<hash-value>...])<0x0400>-<len>-(<0x01>-<hash-mc>-<hash-len>-(<hash-value>)-[<hash-value>...])0x0400 - Merkle Hash Tree (1024 decimal) multicodec value
0x01 - Hash Tree Type with this settings:
0x02 - Hash Tree Type with this settings:
and so on
Tiger multihash:
<tiger-mc>-<len>-<hash><0x7A>-<0x18>-<0x3293ac630c13f0245f92bbb1766e16167a4e58492dde73f3>0x7A - Tiger-hash multicodec value
Tree Tiger multihash:
<merkle-hash-tree-mc>-<len>-(<hash-tree-type>-<tiger-mc><tiger-len>(<tiger-hash>)[<tiger-hash>...])Tree sha2-256 multihash:
<merkle-hash-tree-mc>-<len>-(<hash-tree-type>-<sha2-256-mc>-<sha2-256-len>-(<sha2-256-hash>)[<sha2-256-hash>...])Links:
Tree Hash EXchange format (THEX)
Tiger:
A Fast New Cryptographic Hash Function (Designed in 1995)
wikipedia: Tiger (cryptography)
wikipedia: Merkle tree#Tiger tree hash
License: MIT
Signed-off-by: Ivan [email protected]