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22 lines
562 B
TypeScript
22 lines
562 B
TypeScript
import { randomBytes, createHash } from 'crypto';
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/**
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* Utility to encode a buffer to a base64 URI.
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*
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* @param buf The buffer to encode.
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* @returns The encoded string.
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*/
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export function base64URLEncode(buf: Buffer): string {
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return buf
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.toString('base64')
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.replace(/\+/g, '-')
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.replace(/\//g, '_')
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.replace(/=/g, '');
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}
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export const verifier = base64URLEncode(randomBytes(32));
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function sha256(buf: Buffer) {
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return createHash('sha256').update(buf).digest();
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}
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export const challenge = base64URLEncode(sha256(Buffer.from(verifier)));
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