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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | 1x 236x 238x 238x 1x 236x 236x 236x | import { getCryptoLib } from './cryptoUtils' type NodeCryptoCreateHash = typeof import('crypto').createHash export interface Sha2Hash { digest(data: NodeJS.TypedArray, algorithm?: 'sha256' | 'sha512'): Promise<Buffer>; } class NodeCryptoSha2Hash { createHash: NodeCryptoCreateHash constructor(createHash: NodeCryptoCreateHash) { this.createHash = createHash } async digest(data: NodeJS.TypedArray, algorithm = 'sha256'): Promise<Buffer> { const result = this.createHash(algorithm) .update(data) .digest() return Promise.resolve(result) } } class WebCryptoSha2Hash implements Sha2Hash { subtleCrypto: SubtleCrypto constructor(subtleCrypto: SubtleCrypto) { this.subtleCrypto = subtleCrypto } async digest(data: NodeJS.TypedArray, algorithm = 'sha256'): Promise<Buffer> { let algo: string if (algorithm === 'sha256') { algo = 'SHA-256' } else if (algorithm === 'sha512') { algo = 'SHA-512' } else { throw new Error(`Unsupported hash algorithm ${algorithm}`) } const hash = await this.subtleCrypto.digest(algo, data) return Buffer.from(hash) } } export async function createSha2Hash(): Promise<Sha2Hash> { const cryptoLib = await getCryptoLib() Iif (cryptoLib.name === 'subtleCrypto') { return new WebCryptoSha2Hash(cryptoLib.lib) } else { return new NodeCryptoSha2Hash(cryptoLib.lib.createHash) } } |