mcp-server-neon

import crypto from 'crypto'; export const generateRandomString = (length: number): string => { const charset = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'; const array = new Uint8Array(length); crypto.getRandomValues(array); return Array.from(array, (byte) => charset[byte % charset.length]).join(''); }; export const verifyPKCE = ( codeChallenge: string, codeChallengeMethod: string, codeVerifier: string, ): boolean => { if (!codeChallenge || !codeChallengeMethod || !codeVerifier) { return false; } if (codeChallengeMethod === 'S256') { const hash = crypto .createHash('sha256') .update(codeVerifier) .digest('base64url'); return codeChallenge === hash; } if (codeChallengeMethod === 'plain') { return codeChallenge === codeVerifier; } return false; };