React Native RSA加密

Jsencrypt框架

NPM Jsencrypt

1). npm安装

npm i jsencrypt

2). 导入

import 'jsencrypt';

3). 使用Git控制台创建私钥

# 创建
openssl genrsa -out rsa_1024_priv.pem 1024
# 查看私钥
cat rsa_1024_priv.pem

4). 使用Git控制台创建公钥

# 创建
openssl rsa -pubout -in rsa_1024_priv.pem -out rsa_1024_pub.pem
# 查看
cat rsa_1024_pub.pem

5). JS代码加密

    let encrypt = new JSEncrypt();
    encrypt.setPublicKey(PUB_KEY);
    let encrypted = encrypt.encrypt('要加密的数据');

6). JS代码解密

    let decrypt = new JSEncrypt();
    decrypt.setPrivateKey(PRIV_KEY);
    let decrypted = decrypt.decrypt('公钥加密后的数据');

7). 完整代码

import React, {PureComponent} from 'react';
import {
    AppRegistry,
    Button,
    StyleSheet, Text, TextInput,
    View
} from 'react-native';
// npm i jsencrypt
import 'jsencrypt';
// 公钥
const PUB_KEY = '-----BEGIN PUBLIC KEY-----\n' +
    'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDLQZ6XzBsLRfgzAOeueNz+64M9\n' +
    'ralhL0tykrDzNtCYYPo+vV9/pALPYSrriCUtHgBG36zHJApZ6BsSWYO8P3HoliUL\n' +
    'tJZ1DJ97B//7aj0dHSQekXMRE0+7CUWr3ol6FR1V5lf1+Wdcy2IgSoJVHUFhEjtq\n' +
    'Lg3BzmwV7Mc2oWZHgwIDAQAB\n' +
    '-----END PUBLIC KEY-----\n';
// 私钥
const PRIV_KEY = '-----BEGIN RSA PRIVATE KEY-----\n' +
    'MIICXgIBAAKBgQDLQZ6XzBsLRfgzAOeueNz+64M9ralhL0tykrDzNtCYYPo+vV9/\n' +
    'pALPYSrriCUtHgBG36zHJApZ6BsSWYO8P3HoliULtJZ1DJ97B//7aj0dHSQekXMR\n' +
    'E0+7CUWr3ol6FR1V5lf1+Wdcy2IgSoJVHUFhEjtqLg3BzmwV7Mc2oWZHgwIDAQAB\n' +
    'AoGBAJzwpu8Yhw02UoW3PizGYAVpfeWi8LT8mqn1wDGbcocl4jONb26UCiNsKILC\n' +
    'lcn3b0lKLhN5rZBsGnMZsREqf90wWHW3kTbuF1d8tJmaJfuC2km3iXd4XAoMgsSR\n' +
    'QrHbH+WuiIQzAZviHnY52qXgMwnUN8y1pNrns2Ew3oyGriWhAkEA+ZfUSSMYG7ph\n' +
    'Io2UrOZdiM+4XJycG775Rz3hmWR50gbqBpiIjYAOdsgAK6zyyMyuDctTvCgeUm2Z\n' +
    'dQhDYpX4swJBANB5SzsICgXKz81V1jNU7cizi7rURC3V8QgJouFzZkrrjru7WJ8Q\n' +
    '6WKB6VHjtRxkgBEkkUUU5ucWHLruOr95vfECQQDYJrjdrdrPCJXeiqZbJhWSyfFr\n' +
    'ouU+0iCnpdueL/mf/gTmOWrowCHGlGYxbNHFPBzwLUoTBNtdnzTquYFB+4cpAkB3\n' +
    'OWb005wnw90jqTtfD+sNJOF8b3iuXfQCjMBB/yU5I431fycnkRxn4bP1ySwCmNdE\n' +
    '9oy93T5QWi0EGsouRwmBAkEAogAnYaUe3vK3X7gxrk7F0FGsHZLvR8Y1g8iOZq66\n' +
    '53+6QJVj6TFPOw9oS4chdgBnaZVtziJZZnHyjnobO70tUA==\n' +
    '-----END RSA PRIVATE KEY-----\n';

/**
 * @FileName: RSAEncryptDemo
 * @Author: mazaiting
 * @Date: 2018/6/29
 * @Description:
 */
class RSAEncryptDemo extends PureComponent {
    constructor(props) {
        super(props);
        this.state = {
            data: '',
            text: ''
        }
    }
    render() {
        return (
            <View style={styles.container}>
                <TextInput
                    onChangeText={(text) => this.setState({data: text})}
                />
                <Button
                    title='加密'
                    onPress={() => this.encrypt()}
                />
                <Button
                    title='解密'
                    onPress={() => this.decrypt()}
                />
                <Text>{this.state.text}</Text>
            </View>
        )
    }
    
    /**
     * 加密
     */
    encrypt() {
        let encrypt = new JSEncrypt();
        encrypt.setPublicKey(PUB_KEY);
        let encrypted = encrypt.encrypt(this.state.data);
        this.setState({
            text: encrypted
        })
    }
    
    /**
     * 解密
     */
    decrypt() {
        let decrypt = new JSEncrypt();
        decrypt.setPrivateKey(PRIV_KEY);
        let decrypted = decrypt.decrypt(this.state.text);
        this.setState({
            text: decrypted
        })
    }
    
    
}

/**
 * 样式属性
 */
const styles = StyleSheet.create({
    container: {
        flex: 1,
        backgroundColor: '#DDD'
    }
});

AppRegistry.registerComponent('abcd', () => RSAEncryptDemo);

8). 效果

加解密效果.gif

9). 签名

    /**
     * 签名
     */
    sign() {
        let encrypt = new JSEncrypt();
        // 私钥加密
        encrypt.setPrivateKey(PRIV_KEY);
        let encrypted = encrypt.sign(this.state.data, this.digestMethod, "md5");
        console.log(encrypted);
        this.setState({
            text: encrypted
        })
    }
    
    /**
     * 算法
     */
    digestMethod(text) {
        return text
    }

10). 验证

    /**
     * 验证
     */
    verify() {
        let decrypt = new JSEncrypt();
        // 公钥解密
        decrypt.setPublicKey(PUB_KEY);
        let decrypted = decrypt.verify(this.state.data, this.state.text,this.digestMethod);
        console.log(decrypted);
        this.setState({
            text: decrypted+''
        })
    }
    
    /**
     * 算法
     */
    digestMethod(text) {
        return text
    }

11). 效果

签名验证.gif

注：RSA使用公钥加密，私钥解密。 私钥签名，公钥验证。服务器端存储私钥。