PKCEで顧客を認証する

Python

import base64
import hashlib
import secrets
import urllib.parse

verifier = secrets.token_urlsafe(48)
challenge = base64.urlsafe_b64encode(hashlib.sha256(verifier.encode()).digest()).rstrip(b"=").decode()
state = secrets.token_urlsafe(32)
nonce = secrets.token_urlsafe(32)
# Store verifier, state and nonce in the user's server-side session.
params = {
    "response_type": "code",
    "client_id": "YOUR_CLIENT_ID",
    "redirect_uri": "https://app.example.com/auth/shareai/callback",
    "scope": "openid profile surcharge",
    "state": state,
    "nonce": nonce,
    "code_challenge": challenge,
    "code_challenge_method": "S256",
}
print("https://auth.shareai.now/oauth/authorize?" + urllib.parse.urlencode(params))

TypeScript

import { randomBytes, createHash } from "node:crypto";
const verifier = randomBytes(48).toString("base64url");
const state = randomBytes(32).toString("base64url");
const nonce = randomBytes(32).toString("base64url");
const challenge = createHash("sha256").update(verifier).digest("base64url");
// Save verifier, state and nonce in the initiating server-side session.
const params = new URLSearchParams({ response_type: "code", client_id: "YOUR_CLIENT_ID",
  redirect_uri: "https://app.example.com/auth/shareai/callback",
  scope: "openid profile surcharge", state, nonce,
  code_challenge: challenge, code_challenge_method: "S256" });
const authorizationUrl = `https://auth.shareai.now/oauth/authorize?${params}`;
// Redirect the browser to authorizationUrl.

cURL

curl --fail-with-body "https://auth.shareai.now/oauth/token" \
  -H "Content-Type: application/x-www-form-urlencoded" \
  --data-urlencode "grant_type=authorization_code" \
  --data-urlencode "client_id=$SHAREAI_CLIENT_ID" \
  --data-urlencode "client_secret=$SHAREAI_CLIENT_SECRET" \
  --data-urlencode "code=$AUTHORIZATION_CODE" \
  --data-urlencode "redirect_uri=https://app.example.com/auth/shareai/callback" \
  --data-urlencode "code_verifier=$PKCE_VERIFIER"