1# 指定二进制数据转换非对称密钥对(ArkTS)
2
3
4以RSA、ECC、SM2为例，根据指定的对称密钥二进制数据，生成非对称密钥对（KeyPair），即将外部或存储的二进制数据转换为算法库的密钥对象，该对象可用于后续的加解密等操作。
5
6
7> **说明：**
8>
9> 针对非对称密钥的convertKey操作：
10>
11> - 公钥需满足：ASN.1语法、X.509规范、DER编码格式。
12>
13> - 私钥需满足：ASN.1语法、PKCS\#8规范、DER编码格式。
14
15
16## 指定二进制数据转换RSA密钥对
17
18对应的算法规格请查看[非对称密钥生成和转换规格：RSA](crypto-asym-key-generation-conversion-spec.md#rsa)。
19
201. 获取RSA公钥或私钥二进制数据，封装成DataBlob对象。
21
22   公钥和私钥可只传入其中一个，此处示例以传入公钥为例。
23
242. 调用[cryptoFramework.createAsyKeyGenerator](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#cryptoframeworkcreateasykeygenerator)，指定字符串参数'RSA1024'，创建RSA密钥类型为RSA1024、素数个数为2的非对称密钥生成器（AsyKeyGenerator）。
25
26   生成RSA非对称密钥时，默认素数为2，此处省略了参数PRIMES_2。
27
283. 调用[AsyKeyGenerator.convertKey](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#convertkey-3)，传入二进制密钥数据，生成非对称密钥对象（KeyPair）。
29
30- 以使用callback方式生成RSA密钥对为例：
31  ```ts
32  import { cryptoFramework } from '@kit.CryptoArchitectureKit';
33
34  function convertAsyKey() {
35    let rsaGenerator = cryptoFramework.createAsyKeyGenerator('RSA1024');
36    let pkVal = new Uint8Array([48, 129, 159, 48, 13, 6, 9, 42, 134, 72, 134, 247, 13, 1, 1, 1, 5, 0, 3, 129, 141, 0, 48, 129, 137, 2, 129, 129, 0, 174, 203, 113, 83, 113, 3, 143, 213, 194, 79, 91, 9, 51, 142, 87, 45, 97, 65, 136, 24, 166, 35, 5, 179, 42, 47, 212, 79, 111, 74, 134, 120, 73, 67, 21, 19, 235, 80, 46, 152, 209, 133, 232, 87, 192, 140, 18, 206, 27, 106, 106, 169, 106, 46, 135, 111, 118, 32, 129, 27, 89, 255, 183, 116, 247, 38, 12, 7, 238, 77, 151, 167, 6, 102, 153, 126, 66, 28, 253, 253, 216, 64, 20, 138, 117, 72, 15, 216, 178, 37, 208, 179, 63, 204, 39, 94, 244, 170, 48, 190, 21, 11, 73, 169, 156, 104, 193, 3, 17, 100, 28, 60, 50, 92, 235, 218, 57, 73, 119, 19, 101, 164, 192, 161, 197, 106, 105, 73, 2, 3, 1, 0, 1]);
37    let pkBlob: cryptoFramework.DataBlob = { data: pkVal };
38    rsaGenerator.convertKey(pkBlob, null, (err, keyPair) => {
39      if (err) {
40        console.error(`convertKey failed, ${err.code}, ${err.message}`);
41        return;
42      }
43      console.info('convertKey success');
44    });
45  }
46  ```
47
48- 同步返回结果（调用方法[convertKeySync](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#convertkeysync12)）：
49  ```ts
50  import { cryptoFramework } from '@kit.CryptoArchitectureKit';
51
52  function convertAsyKeySync() {
53    let rsaGenerator = cryptoFramework.createAsyKeyGenerator('RSA1024');
54    let pkVal = new Uint8Array([48, 129, 159, 48, 13, 6, 9, 42, 134, 72, 134, 247, 13, 1, 1, 1, 5, 0, 3, 129, 141, 0, 48, 129, 137, 2, 129, 129, 0, 174, 203, 113, 83, 113, 3, 143, 213, 194, 79, 91, 9, 51, 142, 87, 45, 97, 65, 136, 24, 166, 35, 5, 179, 42, 47, 212, 79, 111, 74, 134, 120, 73, 67, 21, 19, 235, 80, 46, 152, 209, 133, 232, 87, 192, 140, 18, 206, 27, 106, 106, 169, 106, 46, 135, 111, 118, 32, 129, 27, 89, 255, 183, 116, 247, 38, 12, 7, 238, 77, 151, 167, 6, 102, 153, 126, 66, 28, 253, 253, 216, 64, 20, 138, 117, 72, 15, 216, 178, 37, 208, 179, 63, 204, 39, 94, 244, 170, 48, 190, 21, 11, 73, 169, 156, 104, 193, 3, 17, 100, 28, 60, 50, 92, 235, 218, 57, 73, 119, 19, 101, 164, 192, 161, 197, 106, 105, 73, 2, 3, 1, 0, 1]);
55    let pkBlob: cryptoFramework.DataBlob = { data: pkVal };
56    try {
57      let keyPair = rsaGenerator.convertKeySync(pkBlob, null);
58      if (keyPair != null) {
59        console.info('convertKeySync success');
60      }
61    } catch (e) {
62      console.error(`get key pair failed, ${e.code}, ${e.message}`);
63    }
64  }
65  ```
66
67
68## 指定二进制数据转换ECC密钥对
69
70对应的算法规格请查看[非对称密钥生成和转换规格：ECC](crypto-asym-key-generation-conversion-spec.md#ecc)。
71
721. 获取ECC公钥或私钥二进制数据，封装成DataBlob对象。
73
74   公钥和私钥可只传入其中一个，此处示例以传入公钥、私钥为例。
75
762. 调用[cryptoFramework.createAsyKeyGenerator](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#cryptoframeworkcreateasykeygenerator)，指定字符串参数'ECC256'，创建密钥算法为ECC、密钥长度为256位的非对称密钥生成器（AsyKeyGenerator）。
77
783. 调用[AsyKeyGenerator.convertKey](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#convertkey-3)，传入公钥二进制和私钥二进制，生成非对称密钥对象（KeyPair）。
79
80- 以使用callback方式生成ECC密钥对为例：
81  ```ts
82  import { cryptoFramework } from '@kit.CryptoArchitectureKit';
83
84  function convertEccAsyKey() {
85    let pubKeyArray = new Uint8Array([48, 89, 48, 19, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 8, 42, 134, 72, 206, 61, 3, 1, 7, 3, 66, 0, 4, 83, 96, 142, 9, 86, 214, 126, 106, 247, 233, 92, 125, 4, 128, 138, 105, 246, 162, 215, 71, 81, 58, 202, 121, 26, 105, 211, 55, 130, 45, 236, 143, 55, 16, 248, 75, 167, 160, 167, 106, 2, 152, 243, 44, 68, 66, 0, 167, 99, 92, 235, 215, 159, 239, 28, 106, 124, 171, 34, 145, 124, 174, 57, 92]);
86    let priKeyArray = new Uint8Array([48, 49, 2, 1, 1, 4, 32, 115, 56, 137, 35, 207, 0, 60, 191, 90, 61, 136, 105, 210, 16, 27, 4, 171, 57, 10, 61, 123, 40, 189, 28, 34, 207, 236, 22, 45, 223, 10, 189, 160, 10, 6, 8, 42, 134, 72, 206, 61, 3, 1, 7]);
87    let pubKeyBlob: cryptoFramework.DataBlob = { data: pubKeyArray };
88    let priKeyBlob: cryptoFramework.DataBlob = { data: priKeyArray };
89    let generator = cryptoFramework.createAsyKeyGenerator('ECC256');
90    generator.convertKey(pubKeyBlob, priKeyBlob, (error, data) => {
91      if (error) {
92        console.error(`convertKey failed, ${error.code}, ${error.message}`);
93        return;
94      }
95      console.info('convertKey success');
96    });
97  }
98  ```
99
100- 同步返回结果（调用方法[convertKeySync](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#convertkeysync12)）：
101  ```ts
102  import { cryptoFramework } from '@kit.CryptoArchitectureKit';
103
104  function convertECCAsyKeySync() {
105    let pubKeyArray = new Uint8Array([48, 89, 48, 19, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 8, 42, 134, 72, 206, 61, 3, 1, 7, 3, 66, 0, 4, 83, 96, 142, 9, 86, 214, 126, 106, 247, 233, 92, 125, 4, 128, 138, 105, 246, 162, 215, 71, 81, 58, 202, 121, 26, 105, 211, 55, 130, 45, 236, 143, 55, 16, 248, 75, 167, 160, 167, 106, 2, 152, 243, 44, 68, 66, 0, 167, 99, 92, 235, 215, 159, 239, 28, 106, 124, 171, 34, 145, 124, 174, 57, 92]);
106    let priKeyArray = new Uint8Array([48, 49, 2, 1, 1, 4, 32, 115, 56, 137, 35, 207, 0, 60, 191, 90, 61, 136, 105, 210, 16, 27, 4, 171, 57, 10, 61, 123, 40, 189, 28, 34, 207, 236, 22, 45, 223, 10, 189, 160, 10, 6, 8, 42, 134, 72, 206, 61, 3, 1, 7]);
107    let pubKeyBlob: cryptoFramework.DataBlob = { data: pubKeyArray };
108    let priKeyBlob: cryptoFramework.DataBlob = { data: priKeyArray };
109    let generator = cryptoFramework.createAsyKeyGenerator('ECC256');
110    try {
111      let keyPair = generator.convertKeySync(pubKeyBlob, priKeyBlob);
112      if (keyPair != null) {
113        console.info('convertKeySync success');
114      }
115    } catch (e) {
116      console.error(`get key pair failed, ${e.code}, ${e.message}`);
117    }
118  }
119  ```
120
121## 指定PKCS8二进制数据转换ECC私钥
122
123对应的算法规格请查看[非对称密钥生成和转换规格：ECC](crypto-asym-key-generation-conversion-spec.md#ecc)。
124
125获取ECC公钥或私钥二进制数据，封装成DataBlob对象再转为ECC密钥格式。示例如下：
126
1271. 调用[cryptoFramework.createAsyKeyGenerator](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#cryptoframeworkcreateasykeygenerator)，指定字符串参数'ECC256'，创建密钥算法为ECC、密钥长度为256位的非对称密钥生成器（AsyKeyGenerator）。
128
1292. 调用[PubKey.getEncoded](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#getencoded)获取公钥数据字节流，调用[PriKey.getEncodeDer](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#getencodedder12-1) 并设置参数为'PKCS8'，获取私钥数据的字节流。由此分别获取密钥对象的二进制数据。
130
1313. 调用[AsyKeyGenerator.convertKey](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#convertkey-3)，将上述生成的二进制密钥数据转为非对称密钥对象（KeyPair）。
132
133  ```ts
134  import { cryptoFramework } from '@kit.CryptoArchitectureKit';
135
136  async function main() {
137    // 创建一个AsyKeyGenerator实例
138    let eccGenerator = cryptoFramework.createAsyKeyGenerator('ECC256');
139    // 使用密钥生成器随机生成非对称密钥对
140    let keyGenPromise = eccGenerator.generateKeyPair();
141    keyGenPromise.then(keyPair => {
142      let pubKey = keyPair.pubKey;
143      let priKey = keyPair.priKey;
144      // 获取非对称密钥对ECC的二进制数据
145      let pubBlob = pubKey.getEncoded();
146      let skBlob = priKey.getEncodedDer('PKCS8');
147      let generator = cryptoFramework.createAsyKeyGenerator('ECC256');
148      generator.convertKey(pubBlob, skBlob, (error, data) => {
149        if (error) {
150          console.error(`convertKey failed, ${error.code}, ${error.message}`);
151          return;
152        }
153        console.info('convertKey success');
154      });
155    });
156  }
157  ```
158
159## 指定二进制数据转换SM2密钥对
160
161对应的算法规格请查看[非对称密钥生成和转换规格：SM2](crypto-asym-key-generation-conversion-spec.md#sm2)。
162
1631. 获取SM2公钥或私钥二进制数据，封装成DataBlob对象。
164
165   公钥和私钥可只传入其中一个，此处示例以传入公钥、私钥为例。
166
1672. 调用[cryptoFramework.createAsyKeyGenerator](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#cryptoframeworkcreateasykeygenerator)，指定字符串参数'SM2_256'，创建密钥算法为SM2、密钥长度为256位的非对称密钥生成器（AsyKeyGenerator）。
168
1693. 调用[AsyKeyGenerator.convertKey](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#convertkey-3)，传入公钥二进制和私钥二进制，生成非对称密钥对象（KeyPair）。
170
171- 以使用callback方式生成SM2密钥对为例：
172  ```ts
173  import { cryptoFramework } from '@kit.CryptoArchitectureKit';
174
175  function convertSM2AsyKey() {
176    let pubKeyArray = new Uint8Array([48, 89, 48, 19, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 8, 42, 129, 28, 207, 85, 1, 130, 45, 3, 66, 0, 4, 90, 3, 58, 157, 190, 248, 76, 7, 132, 200, 151, 208, 112, 230, 96, 140, 90, 238, 211, 155, 128, 109, 248, 40, 83, 214, 78, 42, 104, 106, 55, 148, 249, 35, 61, 32, 221, 135, 143, 100, 45, 97, 194, 176, 52, 73, 136, 174, 40, 70, 70, 34, 103, 103, 161, 99, 27, 187, 13, 187, 109, 244, 13, 7]);
177    let priKeyArray = new Uint8Array([48, 49, 2, 1, 1, 4, 32, 54, 41, 239, 240, 63, 188, 134, 113, 31, 102, 149, 203, 245, 89, 15, 15, 47, 202, 170, 60, 38, 154, 28, 169, 189, 100, 251, 76, 112, 223, 156, 159, 160, 10, 6, 8, 42, 129, 28, 207, 85, 1, 130, 45]);
178    let pubKeyBlob: cryptoFramework.DataBlob = { data: pubKeyArray };
179    let priKeyBlob: cryptoFramework.DataBlob = { data: priKeyArray };
180    let generator = cryptoFramework.createAsyKeyGenerator('SM2_256');
181    generator.convertKey(pubKeyBlob, priKeyBlob, (error, data) => {
182      if (error) {
183        console.error(`convertKey failed, ${error.code}, ${error.message}`);
184        return;
185      }
186      console.info('convertKey success');
187    });
188  }
189  ```
190
191- 同步返回结果（调用方法[convertKeySync](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#convertkeysync12)）：
192  ```ts
193  import { cryptoFramework } from '@kit.CryptoArchitectureKit';
194
195  function convertSM2AsyKeySync() {
196    let pubKeyArray = new Uint8Array([48, 89, 48, 19, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 8, 42, 129, 28, 207, 85, 1, 130, 45, 3, 66, 0, 4, 90, 3, 58, 157, 190, 248, 76, 7, 132, 200, 151, 208, 112, 230, 96, 140, 90, 238, 211, 155, 128, 109, 248, 40, 83, 214, 78, 42, 104, 106, 55, 148, 249, 35, 61, 32, 221, 135, 143, 100, 45, 97, 194, 176, 52, 73, 136, 174, 40, 70, 70, 34, 103, 103, 161, 99, 27, 187, 13, 187, 109, 244, 13, 7]);
197    let priKeyArray = new Uint8Array([48, 49, 2, 1, 1, 4, 32, 54, 41, 239, 240, 63, 188, 134, 113, 31, 102, 149, 203, 245, 89, 15, 15, 47, 202, 170, 60, 38, 154, 28, 169, 189, 100, 251, 76, 112, 223, 156, 159, 160, 10, 6, 8, 42, 129, 28, 207, 85, 1, 130, 45]);
198    let pubKeyBlob: cryptoFramework.DataBlob = { data: pubKeyArray };
199    let priKeyBlob: cryptoFramework.DataBlob = { data: priKeyArray };
200    let generator = cryptoFramework.createAsyKeyGenerator('SM2_256');
201    try {
202      let keyPair = generator.convertKeySync(pubKeyBlob, priKeyBlob);
203      if (keyPair != null) {
204        console.info('convertKeySync success');
205      }
206    } catch (e) {
207      console.error(`get key pair failed, ${e.code}, ${e.message}`);
208    }
209  }
210  ```
211