23 lines
822 B
TypeScript
23 lines
822 B
TypeScript
import { createHash, randomBytes } from "node:crypto";
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/** How long a freshly issued email-verification link stays valid. */
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export const EMAIL_VERIFICATION_TTL_MS = 24 * 60 * 60 * 1000;
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/** 256 bits of randomness, hex-encoded - not guessable, never derived from user data. */
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export function generateVerificationToken(): string {
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return randomBytes(32).toString("hex");
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}
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/**
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* Only this hash is ever persisted (see collections/Customers.ts) - the
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* plaintext token exists only in the URL sent by email and briefly in
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* memory while that email is being sent.
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*/
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export function hashVerificationToken(token: string): string {
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return createHash("sha256").update(token).digest("hex");
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}
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export function verificationExpiryISO(): string {
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return new Date(Date.now() + EMAIL_VERIFICATION_TTL_MS).toISOString();
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}
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