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feat: jsonld-credential support (#718)
Signed-off-by: Karim Stekelenburg <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| import type { VerificationMethod } from '../modules/dids' | ||
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| export interface LdKeyPairOptions { | ||
| id: string | ||
| controller: string | ||
| } | ||
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| export abstract class LdKeyPair { | ||
| public readonly id: string | ||
| public readonly controller: string | ||
| public abstract type: string | ||
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| public constructor(options: LdKeyPairOptions) { | ||
| this.id = options.id | ||
| this.controller = options.controller | ||
| } | ||
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| public static async generate(): Promise<LdKeyPair> { | ||
| throw new Error('Not implemented') | ||
| } | ||
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| // eslint-disable-next-line @typescript-eslint/no-unused-vars | ||
| public static async from(verificationMethod: VerificationMethod): Promise<LdKeyPair> { | ||
| throw new Error('Abstract method from() must be implemented in subclass.') | ||
| } | ||
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| public export(publicKey = false, privateKey = false) { | ||
| if (!publicKey && !privateKey) { | ||
| throw new Error('Export requires specifying either "publicKey" or "privateKey".') | ||
| } | ||
| const key = { | ||
| id: this.id, | ||
| type: this.type, | ||
| controller: this.controller, | ||
| } | ||
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| return key | ||
| } | ||
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| public abstract fingerprint(): string | ||
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| public abstract verifyFingerprint(fingerprint: string): boolean | ||
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| public abstract signer(): { | ||
| sign: (data: { data: Uint8Array | Uint8Array[] }) => Promise<Uint8Array | Array<Uint8Array>> | ||
| } | ||
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| public abstract verifier(): { | ||
| verify: (data: { data: Uint8Array | Uint8Array[]; signature: Uint8Array }) => Promise<boolean> | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| import type { Wallet } from '..' | ||
| import type { Key } from './Key' | ||
| import type { LdKeyPairOptions } from './LdKeyPair' | ||
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| import { VerificationMethod } from '../modules/dids' | ||
| import { getKeyDidMappingByVerificationMethod } from '../modules/dids/domain/key-type/keyDidMapping' | ||
| import { JsonTransformer } from '../utils' | ||
| import { MessageValidator } from '../utils/MessageValidator' | ||
| import { Buffer } from '../utils/buffer' | ||
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| import { LdKeyPair } from './LdKeyPair' | ||
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| interface WalletKeyPairOptions extends LdKeyPairOptions { | ||
| wallet: Wallet | ||
| key: Key | ||
| } | ||
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| export function createWalletKeyPairClass(wallet: Wallet) { | ||
| return class WalletKeyPair extends LdKeyPair { | ||
| public wallet: Wallet | ||
| public key: Key | ||
| public type: string | ||
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| public constructor(options: WalletKeyPairOptions) { | ||
| super(options) | ||
| this.wallet = options.wallet | ||
| this.key = options.key | ||
| this.type = options.key.keyType | ||
| } | ||
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| public static async generate(): Promise<WalletKeyPair> { | ||
| throw new Error('Not implemented') | ||
| } | ||
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| public fingerprint(): string { | ||
| throw new Error('Method not implemented.') | ||
| } | ||
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| // eslint-disable-next-line @typescript-eslint/no-unused-vars | ||
| public verifyFingerprint(fingerprint: string): boolean { | ||
| throw new Error('Method not implemented.') | ||
| } | ||
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| public static async from(verificationMethod: VerificationMethod): Promise<WalletKeyPair> { | ||
| const vMethod = JsonTransformer.fromJSON(verificationMethod, VerificationMethod) | ||
| MessageValidator.validateSync(vMethod) | ||
| const { getKeyFromVerificationMethod } = getKeyDidMappingByVerificationMethod(vMethod) | ||
| const key = getKeyFromVerificationMethod(vMethod) | ||
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| return new WalletKeyPair({ | ||
| id: vMethod.id, | ||
| controller: vMethod.controller, | ||
| wallet: wallet, | ||
| key: key, | ||
| }) | ||
| } | ||
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| /** | ||
| * This method returns a wrapped wallet.sign method. The method is being wrapped so we can covert between Uint8Array and Buffer. This is to make it compatible with the external signature libraries. | ||
| */ | ||
| public signer(): { sign: (data: { data: Uint8Array | Uint8Array[] }) => Promise<Uint8Array> } { | ||
| // wrap function for conversion | ||
| const wrappedSign = async (data: { data: Uint8Array | Uint8Array[] }): Promise<Uint8Array> => { | ||
| let converted: Buffer | Buffer[] = [] | ||
|
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| // convert uint8array to buffer | ||
| if (Array.isArray(data.data)) { | ||
| converted = data.data.map((d) => Buffer.from(d)) | ||
| } else { | ||
| converted = Buffer.from(data.data) | ||
| } | ||
|
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| // sign | ||
| const result = await wallet.sign({ | ||
| data: converted, | ||
| key: this.key, | ||
| }) | ||
|
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| // convert result buffer to uint8array | ||
| return Uint8Array.from(result) | ||
| } | ||
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| return { | ||
| sign: wrappedSign.bind(this), | ||
| } | ||
| } | ||
|
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| /** | ||
| * This method returns a wrapped wallet.verify method. The method is being wrapped so we can covert between Uint8Array and Buffer. This is to make it compatible with the external signature libraries. | ||
| */ | ||
| public verifier(): { | ||
| verify: (data: { data: Uint8Array | Uint8Array[]; signature: Uint8Array }) => Promise<boolean> | ||
| } { | ||
| const wrappedVerify = async (data: { | ||
| data: Uint8Array | Uint8Array[] | ||
| signature: Uint8Array | ||
| }): Promise<boolean> => { | ||
| let converted: Buffer | Buffer[] = [] | ||
|
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| // convert uint8array to buffer | ||
| if (Array.isArray(data.data)) { | ||
| converted = data.data.map((d) => Buffer.from(d)) | ||
| } else { | ||
| converted = Buffer.from(data.data) | ||
| } | ||
|
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| // verify | ||
| return wallet.verify({ | ||
| data: converted, | ||
| signature: Buffer.from(data.signature), | ||
| key: this.key, | ||
| }) | ||
| } | ||
| return { | ||
| verify: wrappedVerify.bind(this), | ||
| } | ||
| } | ||
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| public get publicKeyBuffer(): Uint8Array { | ||
| return new Uint8Array(this.key.publicKey) | ||
| } | ||
| } | ||
| } |
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