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fix: remove deprecated multibase and multihash (#674)
Signed-off-by: Timo Glastra <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| import { hash as sha256 } from '@stablelib/sha256' | ||
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| export type HashName = 'sha2-256' | ||
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| type HashingMap = { | ||
| [key in HashName]: (data: Uint8Array) => Uint8Array | ||
| } | ||
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| const hashingMap: HashingMap = { | ||
| 'sha2-256': (data) => sha256(data), | ||
| } | ||
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| export class Hasher { | ||
| public static hash(data: Uint8Array, hashName: HashName): Uint8Array { | ||
| const hashFn = hashingMap[hashName] | ||
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| if (!hashFn) { | ||
| throw new Error(`Unsupported hash name '${hashName}'`) | ||
| } | ||
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| return hashFn(data) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,45 +1,66 @@ | ||
| import multibase from 'multibase' | ||
| import { decodeFromBase58, encodeToBase58 } from './base58' | ||
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| export type BaseName = multibase.BaseName | ||
| export type BaseName = 'base58btc' | ||
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| type EncodingMap = { | ||
| [key in BaseName]: (data: Uint8Array) => string | ||
| } | ||
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| type DecodingMap = { | ||
| [key: string]: (data: string) => { data: Uint8Array; baseName: BaseName } | ||
| } | ||
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| const multibaseEncodingMap: EncodingMap = { | ||
| base58btc: (data) => `z${encodeToBase58(data)}`, | ||
| } | ||
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| const multibaseDecodingMap: DecodingMap = { | ||
| z: (data) => ({ data: decodeFromBase58(data.substring(1)), baseName: 'base58btc' }), | ||
| } | ||
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| export class MultiBaseEncoder { | ||
| /** | ||
| * | ||
| * Encodes a buffer into a multibase | ||
| * | ||
| * @param {Uint8Array} buffer the buffer that has to be encoded | ||
| * @param {multibase.BaseName} baseName the encoding algorithm | ||
| * @param buffer the buffer that has to be encoded | ||
| * @param baseName the encoding algorithm | ||
| */ | ||
| public static encode(buffer: Uint8Array, baseName: multibase.BaseName = 'base58btc') { | ||
| return multibase.encode(baseName, buffer) | ||
| public static encode(buffer: Uint8Array, baseName: BaseName) { | ||
| const encode = multibaseEncodingMap[baseName] | ||
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| if (!encode) { | ||
| throw new Error(`Unsupported encoding '${baseName}'`) | ||
| } | ||
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| return encode(buffer) | ||
| } | ||
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| /** | ||
| * | ||
| * Decodes a multibase into a Uint8Array | ||
| * | ||
| * @param {string} data the multibase that has to be decoded | ||
| * @param data the multibase that has to be decoded | ||
| * | ||
| * @returns {Uint8array} data the decoded multibase | ||
| * @returns {string} encodingAlgorithm name of the encoding algorithm | ||
| * @returns decoded data and the multi base name | ||
| */ | ||
| public static decode(data: string | Uint8Array): { data: Uint8Array; baseName: string } { | ||
| if (this.isValid(data)) { | ||
| const baseName = multibase.encodingFromData(data).name | ||
| return { data: multibase.decode(data), baseName } | ||
| public static decode(data: string): { data: Uint8Array; baseName: string } { | ||
| const prefix = data[0] | ||
| const decode = multibaseDecodingMap[prefix] | ||
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| if (!decode) { | ||
| throw new Error(`No decoder found for multibase prefix '${prefix}'`) | ||
| } | ||
| throw new Error(`Invalid multibase: ${data}`) | ||
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| return decode(data) | ||
| } | ||
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| /** | ||
| * | ||
| * Validates if it is a valid multibase encoded value | ||
| * | ||
| * @param {Uint8Array} data the multibase that needs to be validated | ||
| * | ||
| * @returns {boolean} bool whether the multibase value is encoded | ||
| */ | ||
| public static isValid(data: string | Uint8Array): boolean { | ||
| return multibase.isEncoded(data) ? true : false | ||
| public static isValid(data: string): boolean { | ||
| try { | ||
| MultiBaseEncoder.decode(data) | ||
| return true | ||
| } catch (error) { | ||
| return false | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| import { decode, encode, encodingLength } from 'varint' | ||
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| import { Buffer } from './buffer' | ||
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| export class VarintEncoder { | ||
| public static decode(data: Uint8Array | number[] | Buffer) { | ||
| const code = decode(data) | ||
| return [code, decode.bytes] as const | ||
| } | ||
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| public static encode(int: number) { | ||
| const target = new Buffer(VarintEncoder.encodingLength(int)) | ||
| encode(int, target) | ||
| return target | ||
| } | ||
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| public static encodingLength(int: number) { | ||
| return encodingLength(int) | ||
| } | ||
| } |
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