• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1# 使用RSA密钥对（PKCS1模式）签名及签名恢复(ArkTS)
2
3对应的算法规格请查看[签名验签算法规格：RSA](crypto-sign-sig-verify-overview.md#rsa)。
4
5**签名**
6
71. 调用[cryptoFramework.createAsyKeyGenerator](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#cryptoframeworkcreateasykeygenerator)、[AsyKeyGenerator.generateKeyPair](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#generatekeypair-1)，生成密钥算法为RSA、密钥长度为1024位、素数个数为2的非对称密钥对象（KeyPair），包括公钥（PubKey）和私钥（PriKey）。
8
9   如何生成RSA非对称密钥，开发者可参考下文示例，并结合[非对称密钥生成和转换规格：RSA](crypto-asym-key-generation-conversion-spec.md#rsa)和[随机生成非对称密钥对](crypto-generate-asym-key-pair-randomly.md)理解，参考文档与当前示例可能存在入参差异，请在阅读时注意区分。
10
112. 调用[cryptoFramework.createSign](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#cryptoframeworkcreatesign)，指定字符串参数'RSA1024|PKCS1|SHA256|SignOnly'，创建非对称密钥类型为RSA1024、填充模式为PKCS1、摘要算法为SHA256的Sign实例，用于完成仅签名操作。
12
133. 调用[Sign.init](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#init-3)，使用私钥（PriKey）初始化Sign实例。
14
154. 调用[Sign.sign](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#sign-1)，生成数据签名。
16
17**验签**
18
191. 调用[cryptoFramework.createVerify](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#cryptoframeworkcreateverify)，指定字符串参数'RSA1024|PKCS1|SHA256|Recover'，与签名的Sign实例保持一致。创建Verify实例，用于完成验签操作。
20
212. 调用[Verify.init](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#init-5)，使用公钥（PubKey）初始化Verify实例。
22
233. 调用[Verify.recover](../../reference/apis-crypto-architecture-kit/js-apis-cryptoFramework.md#recover12)，对数据进行签名恢复。
24
25- 异步方法示例：
26
27  ```ts
28  import { cryptoFramework } from '@kit.CryptoArchitectureKit';
29  import { buffer } from '@kit.ArkTS';
30  // 完整的明文被拆分为input1和input2。
31  let input1: cryptoFramework.DataBlob = { data: new Uint8Array(buffer.from("This is Sign test plan1", 'utf-8').buffer) };
32  async function signMessagePromise(priKey: cryptoFramework.PriKey) {
33    let signAlg = "RSA1024|PKCS1|NoHash|OnlySign";
34    let signer = cryptoFramework.createSign(signAlg);
35    await signer.init(priKey);
36    let signData = await signer.sign(input1);
37    return signData;
38  }
39  async function verifyMessagePromise(signMessageBlob: cryptoFramework.DataBlob, pubKey: cryptoFramework.PubKey) {
40    let verifyAlg = "RSA1024|PKCS1|NoHash|Recover";
41    let verifier = cryptoFramework.createVerify(verifyAlg);
42    await verifier.init(pubKey);
43    let rawSignData = await verifier.recover(signMessageBlob);
44    return rawSignData;
45  }
46  async function main() {
47    let keyGenAlg = "RSA1024";
48    let generator = cryptoFramework.createAsyKeyGenerator(keyGenAlg);
49    let keyPair = await generator.generateKeyPair();
50    let signData = await signMessagePromise(keyPair.priKey);
51    let rawSignData = await verifyMessagePromise(signData, keyPair.pubKey);
52    if (rawSignData !== null) {
53      console.info('recover result: ' + rawSignData.data);
54    } else {
55      console.error("get verify recover result fail!");
56    }
57  }
58  ```
59
60- 同步方法示例：
61
62  ```ts
63  import { cryptoFramework } from '@kit.CryptoArchitectureKit';
64  import { buffer } from '@kit.ArkTS';
65  // 完整的明文被拆分为input1和input2。
66  let input1: cryptoFramework.DataBlob = { data: new Uint8Array(buffer.from("This is Sign test plan1", 'utf-8').buffer) };
67  function signMessagePromise(priKey: cryptoFramework.PriKey) {
68    let signAlg = "RSA1024|PKCS1|NoHash|OnlySign";
69    let signer = cryptoFramework.createSign(signAlg);
70    signer.initSync(priKey);
71    let signData = signer.signSync(input1);
72    return signData;
73  }
74  function verifyMessagePromise(signMessageBlob: cryptoFramework.DataBlob, pubKey: cryptoFramework.PubKey) {
75    let verifyAlg = "RSA1024|PKCS1|NoHash|Recover";
76    let verifier = cryptoFramework.createVerify(verifyAlg);
77    verifier.initSync(pubKey);
78    let rawSignData = verifier.recoverSync(signMessageBlob);
79    return rawSignData;
80  }
81  function main() {
82    let keyGenAlg = "RSA1024";
83    let generator = cryptoFramework.createAsyKeyGenerator(keyGenAlg);
84    let keyPair = generator.generateKeyPairSync();
85    let signData = signMessagePromise(keyPair.priKey);
86    let rawSignData = verifyMessagePromise(signData, keyPair.pubKey);
87    if (rawSignData !== null) {
88      console.info('recover result: ' + rawSignData.data);
89    } else {
90      console.error("get verify recover result fail!");
91    }
92  }
93  ```
94