• 引入的三方库

@yunkss/eftool
import { Base64Util, RSA,} from '@yunkss/eftool'

• 鸿蒙系统加解密库

import { cryptoFramework } from '@kit.CryptoArchitectureKit';

具体代码实现

export class RSAUtil {
 
  static readonly clientPublicKey: string = '公钥串'
  static readonly clientPrivateKey: string =  '私钥串'

1. 通过Uinit8Array类型生成密钥对
static async genKeyPairByUinit8Array() {
    let publicKeyDataBlob: cryptoFramework.DataBlob =
      { data: new Uint8Array(buffer.from(RSAUtil.clientPublicKey, 'utf-8').buffer) };
    let privateKeyDataBlob: cryptoFramework.DataBlob =
      { data: new Uint8Array(buffer.from(RSAUtil.clientPrivateKey, 'utf-8').buffer) };
    let rsaGenerator = cryptoFramework.createAsyKeyGenerator('RSA1024');
     let keyPair = await rsaGenerator.convertKey(publicKeyDataBlob, privateKeyDataBlob);
    console.info('convertKey success');
    return keyPair;
  }

2. 通过字符串直接生成密钥对
static async genKeyPairByString() {
    let rsaGenerator = cryptoFramework.createAsyKeyGenerator('RSA1024');
    let keyPair = rsaGenerator.convertPemKeySync(RSAUtil.clientPublicKey,RSAUtil.clientPrivateKey)
    console.info('convertKey success');
    return keyPair;
  }

加密操作
static async encryptData(text: string) {
    let cipher = cryptoFramework.createCipher('RSA1024|PKCS1');
    let pubKey: cryptoFramework.PubKey = (await RSAUtil.genKeyPairByString()).pubKey
    await cipher.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, pubKey, null);
    let encode = new util.TextEncoder();
    let textDataBlob: cryptoFramework.DataBlob = { data: encode.encodeInto(text) };
    let encryptDataBlob: cryptoFramework.DataBlob = await cipher.doFinal(textDataBlob);
    let encryptString = await Base64Util.encodeToStr(encryptDataBlob.data)
    return encryptString
  }

解密操作
static async decryptData(text: string) {
    let decoder = cryptoFramework.createCipher('RSA1024|PKCS1');
    let priKey: cryptoFramework.PriKey = (await RSAUtil.genKeyPairByString()).priKey
    await decoder.init(cryptoFramework.CryptoMode.DECRYPT_MODE, priKey, null);
    let decoderBuffer = await Base64Util.decode(text)
    let decryptData = await decoder.doFinal({ data: decoderBuffer});
    let decryptString = buffer.from(decryptData.data).toString('utf-8');
    return decryptString;
  }

  // RSA三方库加密
static async rsaEncryptData(text: string){
    let pubKey = RSA.pemToStrKey(RSAUtil.clientPublicKey);
    let encode = await RSA.encodePKCS1(text, pubKey);
    let encryptText = encode.getDataRow()
    return encryptText
  }

  // RSA三方库解密
static async rsaDecryptData(text: string){
    let priKey = RSA.pemToStrKey(RSAUtil.clientPrivateKey);
    let decode = await RSA.decodePKCS1(text, priKey);
    let decryptText = decode.getDataRow();
    return decryptText
  }
 }

测试代码

  static async  testRSA(){
    let uuidData: string = '0c6e3ba-bd8e-4bed-b905-2ecb55f5dd29'
    let uuid: string = await RSAUtil.encryptData(uuidData)
    LogUtil.print('uuid加密数据',uuid)
    let deuuid = await RSAUtil.decryptData(uuid)
    LogUtil.print('uuid解密数据',deuuid)
    LogUtil.print('---------------------')
    let uuid_rsa = await RSAUtil.rsaEncryptData(uuidData)
    LogUtil.print('uuid加密数据',uuid_rsa)
    let deuuid_rsa = await RSAUtil.rsaDecryptData(uuid_rsa)
    LogUtil.print('uuid解密数据',deuuid_rsa)
    return
}