@aws- sdk/ 云头签名器

这个软件包提供了生成签名的urls和cookie的功能,用于基于CloudFront信任的密钥组对访问CloudFront上的私人内容.

请注意,用 Cloudfront 创建已签名的 URL 的过程与 S3 的过程有很大不同 。 详情请查阅文件 使用已签名的 URL 和已签名的 cookie 限制 CloudFront 内容。 。 。 .

签名 URL

Java 脚本示例 :

import { getSignedUrl } from "@aws-sdk/cloudfront-signer"; // ESM
// const { getSignedUrl } = require("@aws-sdk/cloudfront-signer"); // CJS

const cloudfrontDistributionDomain = "https://d111111abcdef8.cloudfront.net";
const s3ObjectKey = "private-content/private.jpeg";
const url = `${cloudfrontDistributionDomain}/${s3ObjectKey}`;
const privateKey = "CONTENTS-OF-PRIVATE-KEY";
const keyPairId = "PUBLIC-KEY-ID-OF-CLOUDFRONT-KEY-PAIR";
const dateLessThan = "2022-01-01"; // any Date constructor compatible

const signedUrl = getSignedUrl({
  url,
  keyPairId,
  dateLessThan,
  privateKey,
});

用策略签名 URL

import { getSignedUrl } from "@aws-sdk/cloudfront-signer"; // ESM
// const { getSignedUrl } = require("@aws-sdk/cloudfront-signer"); // CJS

const cloudfrontDistributionDomain = "https://d111111abcdef8.cloudfront.net";
const s3ObjectKey = "private-content/private.jpeg";
const url = `${cloudfrontDistributionDomain}/${s3ObjectKey}`;
const privateKey = "CONTENTS-OF-PRIVATE-KEY";
const keyPairId = "PUBLIC-KEY-ID-OF-CLOUDFRONT-KEY-PAIR";
const dateLessThan = "2022-01-01";

const policy = {
  Statement: [
    {
      Resource: url,
      Condition: {
        DateLessThan: {
          "AWS:EpochTime": new Date(dateLessThan).getTime() / 1000, // time in seconds
        },
      },
    },
  ],
};

const policyString = JSON.stringify(policy);

const signedUrl = getSignedUrl({
  keyPairId,
  privateKey,
  policy: policyString,
  // url is automatically extracted from the policy, however you could still overwrite it if needed
});

为资源获取签名的 cookie

import { getSignedCookies } from "@aws-sdk/cloudfront-signer"; // ESM
// const { getSignedCookies } = require("@aws-sdk/cloudfront-signer"); // CJS

const cloudfrontDistributionDomain = "https://d111111abcdef8.cloudfront.net";
const s3ObjectKey = "private-content/private.jpeg";
const url = `${cloudfrontDistributionDomain}/${s3ObjectKey}`;
const privateKey = "CONTENTS-OF-PRIVATE-KEY";
const keyPairId = "PUBLIC-KEY-ID-OF-CLOUDFRONT-KEY-PAIR";
const dateLessThan = "2022-01-01";

const cookies = getSignedCookies({
  url,
  keyPairId,
  dateLessThan,
  privateKey,
});

获得带有策略的签名 cookie

import { getSignedCookies } from "@aws-sdk/cloudfront-signer"; // ESM
// const { getSignedCookies } = require("@aws-sdk/cloudfront-signer"); // CJS

const cloudfrontDistributionDomain = "https://d111111abcdef8.cloudfront.net";
const s3ObjectKey = "private-content/private.jpeg";
const url = `${cloudfrontDistributionDomain}/${s3ObjectKey}`;
const privateKey = "CONTENTS-OF-PRIVATE-KEY";
const keyPairId = "PUBLIC-KEY-ID-OF-CLOUDFRONT-KEY-PAIR";
const dateLessThan = "2022-01-01";

const policy = {
  Statement: [
    {
      Resource: url,
      Condition: {
        DateLessThan: {
          "AWS:EpochTime": new Date(dateLessThan).getTime() / 1000, // time in seconds
        },
      },
    },
  ],
};

const policyString = JSON.stringify(policy);

const cookies = getSignedCookies({
  keyPairId,
  privateKey,
  policy: policyString,
});