HarmonyOS 怎么使用字符串类型的私钥加签（算法：RSA1024+SHA1）

这是对应的JS代码，使用jsrsasign库进行加签

import { hex2b64, KJUR } from 'jsrsasign'

const RSA = new KJUR.crypto.Signature({
  alg: 'SHA1withRSA',
  prov: 'cryptojs/jsrsa',
  prvkeypem: PRIVATE_KEY,
})
let sign = '加密内容'
RSA.updateString(sign)
sign = RSA.sign()
sign = hex2b64(sign)
console.log('sign: ', sign)

想实现一个HarmonyOS版本的RSA+SHA1加签，问题在密钥传不进去，代码如下：

let signer = cryptoFramework.createSign("RSA1024");
signner.init(prikey)

这个prikey是本地的字符串类型的私钥，不需要密钥生成器生成一个keyPair对象，怎么直接使用本地的字符串私钥加签，省略掉文档里描述的那样繁琐的流程

HarmonyOS

FengTianYa

2天前

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回答 1

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回答 1

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superinsect

字符串类型的私钥必须要使用 rsaGenerator.convertKey 进行转录转录demo如下

// 生成RSA密钥对
async function genKeyPairByData(pubKeyData: Uint8Array, priKeyData: Uint8Array) {
  let pubKeyBlob: cryptoFramework.DataBlob = { data: pubKeyData };
  let priKeyBlob: cryptoFramework.DataBlob = { data: priKeyData };
  let rsaGenerator = cryptoFramework.createAsyKeyGenerator('RSA1024');
  let keyPair = await rsaGenerator.convertKey(pubKeyBlob, priKeyBlob);
  console.info('convertKey success');
  return keyPair;
}

公私密钥进行转码的demo实例如下：

let pkData = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0Sgj+kjeK4GQP5nCxHryVNNpPQXEtidEJ1zDfZlrHSKuBpqC6DybMi7hwqQ13WP/E3jmxxx1o3hIlAuAXgNsChutFiRoKpAuQKQY9y4YchvYbDu9zg+vuOaKYinufY1l7p9kDhbozXM9fHKyXju7kZvYDG5T9VATYmQp9CwJTbAXqPz0/o+GJkCkbH1mXUH0kzQHRwXJ68ReqcmlTfe/ThIebSGA/eOvZwa7a3ahCeNJW+8jPfH24WREQ18+gUXIT7T9SU2s6iMpn4Q8yPOG5bdf9qhV1Ws33LVBExCVwoDOZFnJowB3dX3kk8m4LGM6wCA3DoDbtcr+CMWOccTchwIDAQSB";
let skData = "";

let base64 = new util.Base64Helper();
let base64pkData = base64.decodeSync(pkData );
let base64skData = base64.decodeSync(skData )；
let keyPair = await genKeyPairByData(base64pkData, base64skData );
let pubKey = keyPair.pubKey;
let priKey = keyPair.priKey;