验签功能：
/**
- 验签（Promise方式）
- @param algName 验签算法
- @param plainDataBlob 数据原文
- @param signDataBlob 签名数据
- @param rsaKeyPair 密钥
- @returns 验签结果 */ function verifyPromise(algName: string, plainDataBlob: cryptoFramework.DataBlob, signDataBlob: cryptoFramework.DataBlob, keyPair: cryptoFramework.KeyPair): Promise { return new Promise((resolve, reject) => { let verify = cryptoFramework.createVerify(algName); verify.init(keyPair.pubKey) .then(() => { return verify.verify(plainDataBlob, signDataBlob); }) .then((res) => { resolve(res); }) .catch((error: BusinessError) => reject(error)); }); }
3 完整示例代码
import cryptoFramework from '@ohos.security.cryptoFramework'; import { BusinessError } from '@ohos.base'; import Logger from '../utils/Logger'; import util from '@ohos.util';
const TAG = '[SignaturePage]';
// 生成的密钥 let key: cryptoFramework.KeyPair;
@Entry @Component struct SignaturePage { @State message: string = '你好'; signBase64: string = ""; // 密钥算法 // algName: string = 'RSA2048|PRIMES_2'; algName: string = 'SM2_256'; // 签名算法 // signAlgName: string = 'RSA2048|PKCS1|SHA256';
signAlgName: string = 'SM2_256|SM3';
build() { Row() { Column({ space: 12 }) { Text(this.message) .fontSize(30)
Button('生成秘钥').onClick(() => {
let array = stringToUint8Array(this.message); let str = uint8ArrayToString(array); Logger.info(TAG, "str: " + str);
generateKeyPromise(this.algName).then((keyPair: cryptoFramework.KeyPair) => { key = keyPair; Logger.info(TAG, "生成秘钥了")
let that = new util.Base64Helper(); let pubKeyBase64 = that.encodeToStringSync(keyPair.pubKey.getEncoded().data); Logger.info(TAG, "generateKey success, pubKeyBase64: " + pubKeyBase64);
let priKeyBase64 = that.encodeToStringSync(keyPair.priKey.getEncoded().data); Logger.info(TAG, "generateKey success, priKeyBase64: " + priKeyBase64);
// 根据指定的非对称密钥二进制数据，生成KeyPair对象 let generator = cryptoFramework.createAsyKeyGenerator(this.algName); // 公钥 let pubKeyUint8Array = keyPair.pubKey.getEncoded().data let pubKeyBlob: cryptoFramework.DataBlob = { data: pubKeyUint8Array };
// 私钥 let priKeyUint8Array = keyPair.priKey.getEncoded().data let priKeyBlob: cryptoFramework.DataBlob = { data: priKeyUint8Array };
// 生成KeyPair对象 generator.convertKey(pubKeyBlob, priKeyBlob, (err, keyPair) => { if (err) { AlertDialog.show({ message: 'Convert keyPair fail' }); return; } AlertDialog.show({ message: 'Convert keyPair success' });
let pubKeyBase64 = that.encodeToStringSync(keyPair.pubKey.getEncoded().data); Logger.info(TAG, "rsaGenerator.convertKey success, pubKeyBase64: " + pubKeyBase64);
let priKeyBase64 = that.encodeToStringSync(keyPair.priKey.getEncoded().data); Logger.info(TAG, "generateKey success, priKeyBase64: " + priKeyBase64); })
}).catch((error: BusinessError) => { Logger.error(TAG, 'Error:' + error); });
});
Button('签名').onClick(() => {
let input: cryptoFramework.DataBlob = { data: stringToUint8Array(this.message) };
signPromise(this.signAlgName, input, key).then((data: cryptoFramework.DataBlob) => { Logger.info(TAG, "签名成功了") AlertDialog.show({ message: 'signPromise success' });
// 签名后的数据转化为base64 let base64 = new util.Base64Helper(); this.signBase64 = base64.encodeToStringSync(data.data); Logger.info(TAG, "signBase64:" + this.signBase64);
}).catch((error: BusinessError) => { Logger.error(TAG, 'Error:' + error); });
});
Button('验签').onClick(() => {
// 签名后的数据从base64转化为dataBlob let base64 = new util.Base64Helper(); let uint8Array = base64.decodeSync(this.signBase64); let dataBlob: cryptoFramework.DataBlob = { data: uint8Array };
let input: cryptoFramework.DataBlob = { data: stringToUint8Array(this.message) };
verifyPromise(this.signAlgName, input, dataBlob, key).then((data: boolean) => { Logger.info(TAG, "验签成功了，结果为：" + data) AlertDialog.show({ message: 'verifyPromise result: ' + data });
}).catch((error: BusinessError) => { Logger.error(TAG, 'Error:' + error); });
});
} .width('100%') } .height('100%') } }
// 可理解的字符串转成字节流 function stringToUint8Array(str: string): Uint8Array { let textEncoder = new util.TextEncoder("utf-8"); return textEncoder.encodeInto(str); }
// 字节流转成可理解的字符串 function uint8ArrayToString(array: Uint8Array) { let textDecoder = util.TextDecoder.create('utf-8', { ignoreBOM: true }) return textDecoder.decodeWithStream(array); }
/**
- 生成非对称密钥对
- @param algName 密钥算法
- @returns 密钥 */ function generateKeyPromise(algName: string): Promise<cryptoFramework.KeyPair> { return new Promise((resolve, reject) => { let rsaGenerator = cryptoFramework.createAsyKeyGenerator(algName); let keyGenPromise = rsaGenerator.generateKeyPair();
keyGenPromise.then(key => resolve(key)) .catch((error: BusinessError) => reject(error)); }); }
/**
- 签名（Promise方式）
- @param algName 签名算法
- @param plainDataBlob 数据原文
- @param rsaKeyPair 密钥
- @returns */ function signPromise(algName: string, plainDataBlob: cryptoFramework.DataBlob, keyPair: cryptoFramework.KeyPair): Promise<cryptoFramework.DataBlob> { return new Promise((resolve, reject) => { let signer = cryptoFramework.createSign(algName); let cipherText: cryptoFramework.DataBlob; signer.init(keyPair.priKey) .then(() => { return signer.sign(plainDataBlob); }) .then((updateOutput) => { cipherText = updateOutput; resolve(cipherText); }) .catch((error: BusinessError) => reject(error)); }); }
/**
- 验签（Promise方式）
- @param algName 验签算法
- @param plainDataBlob 数据原文
- @param signDataBlob 签名数据
- @param rsaKeyPair 密钥
- @returns 验签结果 */ function verifyPromise(algName: string, plainDataBlob: cryptoFramework.DataBlob, signDataBlob: cryptoFramework.DataBlob, keyPair: cryptoFramework.KeyPair): Promise { return new Promise((resolve, reject) => { let verify = cryptoFramework.createVerify(algName); verify.init(keyPair.pubKey) .then(() => { return verify.verify(plainDataBlob, signDataBlob); }) .then((res) => { resolve(res); }) .catch((error: BusinessError) => reject(error)); }); }
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