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54 lines
1.6 KiB
TypeScript
54 lines
1.6 KiB
TypeScript
import { RSA, RSAKeyPair } from './types';
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import * as NodeRSA from 'node-rsa';
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const nodeRSAOptions: NodeRSA.Options = {
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// Must use pkcs1 otherwise any data encrypted with NodeRSA will crash the
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// app when decrypted by RN-RSA.
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// https://github.com/amitaymolko/react-native-rsa-native/issues/66#issuecomment-932768139
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encryptionScheme: 'pkcs1',
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};
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const rsa: RSA = {
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generateKeyPair: async (keySize: number): Promise<RSAKeyPair> => {
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const keys = new NodeRSA();
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keys.setOptions(nodeRSAOptions);
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keys.generateKeyPair(keySize, 65537);
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// Sanity check
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if (!keys.isPrivate()) throw new Error('No private key was generated');
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if (!keys.isPublic()) throw new Error('No public key was generated');
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return keys;
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},
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loadKeys: async (publicKey: string, privateKey: string): Promise<RSAKeyPair> => {
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const keys = new NodeRSA();
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keys.setOptions(nodeRSAOptions);
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// Don't specify the import format, and let it auto-detect because
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// react-native-rsa might not create a key in the expected format.
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keys.importKey(publicKey);
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if (privateKey) keys.importKey(privateKey);
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return keys;
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},
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encrypt: async (plaintextUtf8: string, rsaKeyPair: RSAKeyPair): Promise<string> => {
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return rsaKeyPair.encrypt(plaintextUtf8, 'base64', 'utf8');
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},
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decrypt: async (ciphertextBase64: string, rsaKeyPair: RSAKeyPair): Promise<string> => {
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return rsaKeyPair.decrypt(ciphertextBase64, 'utf8');
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},
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publicKey: (rsaKeyPair: RSAKeyPair): string => {
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return rsaKeyPair.exportKey('pkcs1-public-pem');
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},
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privateKey: (rsaKeyPair: RSAKeyPair): string => {
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return rsaKeyPair.exportKey('pkcs1-private-pem');
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},
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};
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export default rsa;
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