鸿蒙AES 加解密

1. const AES256: string = 'AES256';
2. const AES128_CBC_PKCS7: string = 'AES256|CBC|PKCS7';

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1. export class CipherModel {
3.   static stringToUint8Array(source:string){
4.     return new Uint8Array(buffer.from(source, 'utf-8').buffer);
5.   }
7.   static uint8ArrayToString(fileData:Uint8Array):string{
8.     return  buffer.from(fileData.buffer).toString('utf-8');
9.   }
11.   public static  aesEncrypt(message: string, key: string, iv: string) {
12.     let paramsSpec: cryptoFramework.IvParamsSpec = { iv: { data: CipherModel.stringToUint8Array(iv)}, algName: "IvParamsSpec" }
13.     let aesGenerator = cryptoFramework.createSymKeyGenerator(AES256);
15.     let un8arrykey = new Uint8Array(buffer.from(key, 'utf-8').buffer);
16.     let pubKeyBlob: cryptoFramework.DataBlob = { data: un8arrykey };
17.     aesGenerator.convertKey(pubKeyBlob, (err, symKey) => {
19.       let cipher = cryptoFramework.createCipher(AES128_CBC_PKCS7);
20.       cipher.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, symKey, paramsSpec, (err, data) => {
21.         let input: cryptoFramework.DataBlob = { data: CipherModel.stringToUint8Array(message)};
22.         cipher.doFinal(input, (err, data) => {
23.           //let that = new util.Base64Helper();
24.           //let result = that.encodeToStringSync(data.data)
25.           LogUtil.d(TAG, "--------------------------result is " + data.data);
26.         })
27.       })
28.     })
29.   }
31.   public static  aesDecrypt(message: string, key: string, iv: string) {
32.     let paramsSpec: cryptoFramework.IvParamsSpec = { iv: { data: CipherModel.stringToUint8Array(iv)}, algName: "IvParamsSpec" }
33.     let aesGenerator = cryptoFramework.createSymKeyGenerator(AES256);
34.     let cipher = cryptoFramework.createCipher(AES128_CBC_PKCS7);
36.     let pubKeyBlob: cryptoFramework.DataBlob = { data: CipherModel.stringToUint8Array(key) };
37.     aesGenerator.convertKey(pubKeyBlob, (err, symKey) => {
39.       cipher.init(cryptoFramework.CryptoMode.DECRYPT_MODE, symKey, paramsSpec, (err, data) => {
40.         //let that = new util.Base64Helper();
41.         //let newMessage = that.decodeSync(message);
42.         let input: cryptoFramework.DataBlob = { data: message };
43.         cipher.doFinal(input, (err, data) => {
44.           let result = CipherModel.uint8ArrayToString(data.data)
45.           LogUtil.d(TAG, "result is " + result);
46.         })
47.       })
48.     })
49.   }
50. }

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代码调整后：

1. export class AESUtil {
3.   //iv ParamsSpec
4.   static genIvParamsSpec(iv:string) {
5.     let dataIv=Utils.stringToUt8Array(iv);
6.     let ivBlob: cryptoFramework.DataBlob = { data: dataIv };
7.     let ivParamsSpec: cryptoFramework.IvParamsSpec = {
8.       algName: "IvParamsSpec",
9.       iv: ivBlob
10.     };
11.     return ivParamsSpec;
12.   }
14.   //key 转 SymKey
15.   static async genSymKeyByData(key: string) {
16.     let aesGenerator = cryptoFramework.createSymKeyGenerator(AES256);
17.     let pubKeyBlob: cryptoFramework.DataBlob = { data: Utils.stringToUt8Array(key) };
18.     let symKey = await aesGenerator.convertKey(pubKeyBlob);
19.     return symKey;
20.   }
23.   //AES 加密 参数
24.   public static async aesEncryptBs64(message: string, key: string, iv: string) {
25.     //key转symKey
26.     let symKey = await AESUtil.genSymKeyByData(key);
28.     //加密
29.     let cipher = cryptoFramework.createCipher(AES128_CBC_PKCS7);
30.     await cipher.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, symKey, AESUtil.genIvParamsSpec(iv));
31.     let input: cryptoFramework.DataBlob = { data:  Utils.stringToUt8Array(message)};
32.     let cryptData = await cipher.doFinal(input);
34.     //对加密值base64编码
35.     let that = new util.Base64Helper();
36.     let result = that.encodeToStringSync(cryptData.data)
37.     return result;
38.   }
41.   //AES 解密 参数
42.   public static async aesDecryptBs64(message: string, key: string, iv: string){
43.     //base 64解密
44.     let that = new util.Base64Helper();
45.     let newMessage = that.decodeSync(message);
47.     //key转symKey
48.     let symKey = await AESUtil.genSymKeyByData(key);
49.     //解密
50.     let cipher = cryptoFramework.createCipher(AES128_CBC_PKCS7);
51.     await cipher.init(cryptoFramework.CryptoMode.DECRYPT_MODE, symKey, AESUtil.genIvParamsSpec(iv));
52.     let input: cryptoFramework.DataBlob = { data: newMessage };
53.     let cryptData = await cipher.doFinal(input);
54.     //对解密值 转string
55.     let result = Utils.ut8ArrayToString(cryptData.data)
56.     return result
58.   }
60. }

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