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72 行
2.5 KiB
TypeScript
72 行
2.5 KiB
TypeScript
import { PublicKeyAlgorithm, PublicKeyCrypto, PublicKeyCryptoProvider } from '../types';
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import NodeRSA from 'node-rsa';
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import { webcrypto } from 'crypto';
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import buildRsaCryptoProvider from './webCrypto/buildRsaCryptoProvider';
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const legacyRSAOptions: 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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// Allows NodeRSA to work with pkcs1-v1.5 in newer NodeJS versions:
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environment: 'browser',
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};
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const legacyRsa: PublicKeyCrypto<NodeRSA> = {
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generateKeyPair: async () => {
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const keys = new NodeRSA();
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keys.setOptions(legacyRSAOptions);
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const keySize = 2048;
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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 { keyPair: keys, keySize };
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},
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loadKeys: async (publicKey: string, privateKey: string) => {
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const keys = new NodeRSA();
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keys.setOptions(legacyRSAOptions);
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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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// Unlimited, but probably not a good idea to encrypt a large amount of data (>=1 KiB).
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// Breaking input into blocks is handled by NodeRSA, but seems to use ECB mode.
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maximumPlaintextLengthBytes: null,
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encrypt: async (plaintextUtf8: string, rsaKeyPair: NodeRSA) => {
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// eslint-disable-next-line @typescript-eslint/no-explicit-any -- Workaround for incorrect types after improving type safety
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return rsaKeyPair.encrypt(plaintextUtf8 as any, 'buffer', 'utf8') as Buffer<ArrayBuffer>;
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},
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decrypt: async (ciphertext: Buffer, rsaKeyPair: NodeRSA) => {
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return rsaKeyPair.decrypt(ciphertext, 'utf8');
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},
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publicKey: async (rsaKeyPair: NodeRSA) => {
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return rsaKeyPair.exportKey('pkcs1-public-pem');
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},
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privateKey: async (rsaKeyPair: NodeRSA) => {
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return rsaKeyPair.exportKey('pkcs1-private-pem');
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},
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};
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const rsa: PublicKeyCryptoProvider = {
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[PublicKeyAlgorithm.Unknown]: null,
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[PublicKeyAlgorithm.RsaV1]: legacyRsa,
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[PublicKeyAlgorithm.RsaV2]: buildRsaCryptoProvider(PublicKeyAlgorithm.RsaV2, webcrypto),
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[PublicKeyAlgorithm.RsaV3]: buildRsaCryptoProvider(PublicKeyAlgorithm.RsaV3, webcrypto),
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};
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export default rsa;
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