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docs: note about keccak

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David Dias 2016-11-07 20:40:58 +00:00
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README.md
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@ -46,9 +46,9 @@ Another useful scenario is when using the multicodec-packed as part of the keys
It is worth noting that multicodec-packed works very well in conjunction with [multihash](https://github.com/multiformats/multihash) and [multiaddr](https://github.com/multiformats/multiaddr), as you can prefix those values with a multicodec-packed to tell what they are. It is worth noting that multicodec-packed works very well in conjunction with [multihash](https://github.com/multiformats/multihash) and [multiaddr](https://github.com/multiformats/multiaddr), as you can prefix those values with a multicodec-packed to tell what they are.
## Multicodec-Packed Protocol Tables ## MulticodecProtocol Tables
Multicodecuses "protocol tables" to agree upon the mapping from one multicodec code (a single varint). These tables can be application specific, though -- like [with](https://github.com/multiformats/multihash) [other](https://github.com/multiformats/multibase) [multiformats](https://github.com/multiformats/multiaddr) -- we will keep a globally agreed upon table with common protocols and formats. Multicodec uses "protocol tables" to agree upon the mapping from one multicodec code (a single varint). These tables can be application specific, though -- like [with](https://github.com/multiformats/multihash) [other](https://github.com/multiformats/multibase) [multiformats](https://github.com/multiformats/multiaddr) -- we will keep a globally agreed upon table with common protocols and formats.
## Multicodec table ## Multicodec table
@ -102,6 +102,7 @@ keccak-224, , 0x1A
keccak-256, , 0x1B keccak-256, , 0x1B
keccak-384, , 0x1C keccak-384, , 0x1C
keccak-512, , 0x1D keccak-512, , 0x1D
Note: keccak has variable output length, instead the number specifies the core length
blake2b, , 0x40 blake2b, , 0x40
blake2s, , 0x41 blake2s, , 0x41
reserved for apps, appl specific range, 0x4000-0x40f0 reserved for apps, appl specific range, 0x4000-0x40f0
@ -148,6 +149,7 @@ stellar-block, Stellar Block, 0xd0
stellar-tx, Stellar Tx, 0xd1 stellar-tx, Stellar Tx, 0xd1
``` ```
## Implementations ## Implementations
- [go](https://github.com/multiformats/go-multicodec/) - [go](https://github.com/multiformats/go-multicodec/)