Created
February 24, 2021 00:06
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possible bug in https://github.com/multiformats/multicodec/blob/master/table.csv
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I believe all of these should work from https://github.com/multiformats/multicodec/blob/master/table.csv | |
name tag code description | |
identity multihash 0x00 raw binary | |
cidv1 ipld 0x01 CIDv1 | |
cidv2 ipld 0x02 CIDv2 | |
cidv3 ipld 0x03 CIDv3 | |
ip4 multiaddr 0x04 | |
tcp multiaddr 0x06 | |
sha1 multihash 0x11 | |
sha2-256 multihash 0x12 | |
sha2-512 multihash 0x13 | |
sha3-512 multihash 0x14 | |
sha3-384 multihash 0x15 | |
sha3-256 multihash 0x16 | |
sha3-224 multihash 0x17 | |
shake-128 multihash 0x18 | |
shake-256 multihash 0x19 | |
keccak-224 multihash 0x1a keccak has variable output length. The number specifies the core length | |
keccak-256 multihash 0x1b | |
keccak-384 multihash 0x1c | |
keccak-512 multihash 0x1d | |
blake3 multihash 0x1e BLAKE3 has a default 32 byte output length. The maximum length is (2^64)-1 bytes. | |
dccp multiaddr 0x21 | |
murmur3-128 multihash 0x22 | |
murmur3-32 multihash 0x23 | |
ip6 multiaddr 0x29 | |
ip6zone multiaddr 0x2a | |
path namespace 0x2f Namespace for string paths. Corresponds to `/` in ASCII. | |
multicodec multiformat 0x30 | |
multihash multiformat 0x31 | |
multiaddr multiformat 0x32 | |
multibase multiformat 0x33 | |
dns multiaddr 0x35 | |
dns4 multiaddr 0x36 | |
dns6 multiaddr 0x37 | |
dnsaddr multiaddr 0x38 | |
protobuf serialization 0x50 Protocol Buffers | |
cbor serialization 0x51 CBOR | |
raw ipld 0x55 raw binary | |
dbl-sha2-256 multihash 0x56 | |
rlp serialization 0x60 recursive length prefix | |
bencode serialization 0x63 bencode | |
dag-pb ipld 0x70 MerkleDAG protobuf | |
dag-cbor ipld 0x71 MerkleDAG cbor | |
libp2p-key ipld 0x72 Libp2p Public Key | |
git-raw ipld 0x78 Raw Git object | |
torrent-info ipld 0x7b Torrent file info field (bencoded) | |
torrent-file ipld 0x7c Torrent file (bencoded) | |
However, once I get further down the https://github.com/multiformats/multicodec/blob/master/table.csv file | |
eofcoin-block ipld 0x81 Leofcoin Block | |
leofcoin-tx ipld 0x82 Leofcoin Transaction | |
leofcoin-pr ipld 0x83 Leofcoin Peer Reputation | |
sctp multiaddr 0x84 | |
dag-jose ipld 0x85 MerkleDAG JOSE | |
dag-cose ipld 0x86 MerkleDAG COSE | |
.... | |
I have a problem | |
const multicodec = require('../src') | |
const { nameToCode } = require('../src/maps') | |
const toString = require('uint8arrays/to-string') | |
const fromString = require('uint8arrays/from-string') | |
const publicKey = '7f235830dd3defa722ef1aa249d6a0ddbba4f990b0817538933f573640653542856da88d335f1fb25b8bcfbe089528dce09b1f7cb99fdd60f88300f4c2cc6d35' | |
const publicKeyByte = fromString(publicKey, 'base16') | |
const publickKeyBytewPrefix = multicodec.addPrefix('eth-tx', publicKeyByte) | |
console.info(toString(Uint8Array.from(publickKeyBytewPrefix), 'base16')) | |
yeilds: | |
93017f235830dd3defa722ef1aa249d6a0ddbba4f990b0817538933f573640653542856da88d335f1fb25b8bcfbe089528dce09b1f7cb99fdd60f88300f4c2cc6d35 | |
I was hoping it would be: | |
937f235830dd3defa722ef1aa249d6a0ddbba4f990b0817538933f573640653542856da88d335f1fb25b8bcfbe089528dce09b1f7cb99fdd60f88300f4c2cc6d35 |
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The hex looks a bit different due to varint:
const multicodec = require('../src')
//const uint8ArrayFromString = require('uint8arrays/from-string')
const { nameToCode } = require('../src/maps')
/**
const multicodec = require('multicodec')
const multibase = require('multibase')
*/
const toString = require('uint8arrays/to-string')
const fromString = require('uint8arrays/from-string')
const publicKey = '7f235830dd3defa722ef1aa249d6a0ddbba4f990b0817538933f573640653542856da88d335f1fb25b8bcfbe089528dce09b1f7cb99fdd60f88300f4c2cc6d35'
console.log('the public key is'+publicKey)
const publicKeyByte = fromString(publicKey, 'base16')
console.log(publicKeyByte)
// console.log(multicodec)
const publickKeyBytewPrefix = multicodec.addPrefix('p256-pub', publicKeyByte)
console.log(publickKeyBytewPrefix)
console.info(toString(Uint8Array.from(publickKeyBytewPrefix), 'base16'))
const noPrefixpublickKeyBytewPrefix = multicodec.rmPrefix(publickKeyBytewPrefix)
console.info(toString(Uint8Array.from(noPrefixpublickKeyBytewPrefix), 'base16'))
console.log('getCodeFromName :'+multicodec.getCodeFromName('p256-pub'))
const varint = multicodec.getVarintFromCode(4608)
console.log(varint)
console.log(toString(varint,'base16'))
//console.log(multicodec.util.varintEncode(300))
console.log(multicodec.getNameFromData(fromString('80247f235830dd3defa722ef1aa249d6a0ddbba4f990b0817538933f573640653542856da88d335f1fb25b8bcfbe089528dce09b1f7cb99fdd60f88300f4c2cc6d35','base16')))