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Add methods to generate keys using ECDH

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This commit is contained in:
Jerko Steiner 2019-12-07 10:13:06 -03:00
parent d0f14f83f9
commit 67c38498f4
6 changed files with 305 additions and 69 deletions
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2
jest.setup.js
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@ -1 +1,3 @@
require('fake-indexeddb/auto')
// eslint-disable-next-line
window.crypto = require('isomorphic-webcrypto')

242
package-lock.json generated
View File

@ -2279,41 +2279,37 @@
"@types/yargs": "^12.0.9"
}
},
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}
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@ -2782,6 +2778,28 @@
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}
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@ -3360,6 +3378,12 @@
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},
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@ -3380,6 +3404,15 @@
"minimalistic-assert": "^1.0.0"
}
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"dev": true,
"requires": {
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}
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"resolved": "https://registry.npmjs.org/assert/-/assert-1.5.0.tgz",
@ -3466,6 +3499,24 @@
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"dev": true
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"dev": true,
"requires": {
"base-64": "^0.1.0"
}
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"dev": true,
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@ -3875,6 +3926,12 @@
}
}
},
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},
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"resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz",
@ -3897,12 +3954,6 @@
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},
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"dev": true
},
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"version": "1.0.2",
"resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
@ -4692,6 +4743,13 @@
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},
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"dev": true,
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},
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"resolved": "https://registry.npmjs.org/component-bind/-/component-bind-1.0.0.tgz",
@ -5948,6 +6006,16 @@
}
}
},
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}
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"resolved": "https://registry.npmjs.org/express/-/express-4.17.1.tgz",
@ -7939,6 +8007,25 @@
"integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
"dev": true
},
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"version": "2.3.2",
"resolved": "https://registry.npmjs.org/isomorphic-webcrypto/-/isomorphic-webcrypto-2.3.2.tgz",
"integrity": "sha512-XbUC6ZwVvJfts2FYfAuNRU99tt89EzTknZcKZjxx6/6hxNeLgF6sIDbA/RdA3spbcNrXYyPOHa90khbUgZWarw==",
"dev": true,
"requires": {
"@peculiar/webcrypto": "^1.0.19",
"@unimodules/core": "*",
"@unimodules/react-native-adapter": "*",
"asmcrypto.js": "^0.22.0",
"b64-lite": "^1.3.1",
"b64u-lite": "^1.0.1",
"expo-random": "*",
"msrcrypto": "^1.5.6",
"react-native-securerandom": "^0.1.1",
"str2buf": "^1.3.0",
"webcrypto-shim": "^0.1.4"
}
},
"isstream": {
"version": "0.1.2",
"resolved": "https://registry.npmjs.org/isstream/-/isstream-0.1.2.tgz",
@ -9841,6 +9928,12 @@
"resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
"integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
},
"msrcrypto": {
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"dev": true
},
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"version": "0.0.8",
"resolved": "https://registry.npmjs.org/mute-stream/-/mute-stream-0.0.8.tgz",
@ -9981,23 +10074,6 @@
}
}
},
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"resolved": "https://registry.npmjs.org/node-rsa/-/node-rsa-0.4.2.tgz",
"integrity": "sha1-1jkXKewWqDDtWjgEKzFX0tXXJTA=",
"dev": true,
"requires": {
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},
"dependencies": {
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"resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
"integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y=",
"dev": true
}
}
},
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"resolved": "https://registry.npmjs.org/node-sass/-/node-sass-4.13.0.tgz",
@ -10839,6 +10915,30 @@
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"dev": true,
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"tslib": "^1.10.0"
},
"dependencies": {
"@types/node": {
"version": "10.17.6",
"resolved": "https://registry.npmjs.org/@types/node/-/node-10.17.6.tgz",
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"dev": true
}
}
},
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"version": "1.0.17",
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"dev": true
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@ -10939,6 +11039,16 @@
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}
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@ -12447,6 +12557,12 @@
"integrity": "sha1-NbCYdbT/SfJqd35QmzCQoyJr8ks=",
"dev": true
},
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"version": "1.3.0",
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"integrity": "sha512-xIBmHIUHYZDP4HyoXGHYNVmxlXLXDrtFHYT0eV6IOdEj3VO9ccaF1Ejl9Oq8iFjITllpT8FhaXb4KsNmw+3EuA==",
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@ -12876,12 +12992,6 @@
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}
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@ -13776,6 +13886,22 @@
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},
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}
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"dev": true
},
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"version": "4.0.2",
"resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-4.0.2.tgz",

2
package.json
View File

@ -61,7 +61,6 @@
"@babel/core": "^7.7.2",
"@babel/polyfill": "^7.7.0",
"@babel/preset-env": "^7.7.1",
"@trust/webcrypto": "^0.9.2",
"@types/classnames": "^2.2.9",
"@types/debug": "^4.1.5",
"@types/ejs": "^2.6.3",
@ -93,6 +92,7 @@
"eslint-plugin-import": "^2.18.2",
"eslint-plugin-react": "^7.16.0",
"fake-indexeddb": "^3.0.0",
"isomorphic-webcrypto": "^2.3.2",
"jest": "^24.9.0",
"loose-envify": "^1.4.0",
"node-sass": "^4.13.0",

33
src/client/crypto/index.test.ts Normal file
View File

@ -0,0 +1,33 @@
import { encrypt, decrypt, generateECDHKeyPair, deriveECDHKey } from './index'
describe('crypto', () => {
let keypair1: CryptoKeyPair
let keypair2: CryptoKeyPair
let derived1: CryptoKey
let derived2: CryptoKey
beforeAll(async () => {
keypair1 = await generateECDHKeyPair()
keypair2 = await generateECDHKeyPair()
derived1 = await deriveECDHKey({
privateKey: keypair1.privateKey,
publicKey: keypair2.publicKey,
})
derived2 = await deriveECDHKey({
privateKey: keypair2.privateKey,
publicKey: keypair1.publicKey,
})
})
describe('encrypt and decrypt', () => {
it('can be encrypted with one pair and decrypted with other', async () => {
const message = 'test message'
const encrypted = await encrypt(derived1, message)
const decrypted = await decrypt(derived2, encrypted)
expect(decrypted).toEqual(message)
})
})
})

75
src/client/crypto/index.ts
View File

@ -0,0 +1,75 @@
export async function generateECDHKeyPair() {
const key = await window.crypto.subtle.generateKey(
{
name: 'ECDH',
namedCurve: 'P-256',
},
/* extractable */ false,
['deriveKey'],
)
return key
}
export async function deriveECDHKey(params: {
privateKey: CryptoKey
publicKey: CryptoKey
}) {
const { privateKey, publicKey } = params
const derivedKey = await window.crypto.subtle.deriveKey(
{
name: 'ECDH',
public: publicKey,
},
privateKey,
{
name: 'AES-CTR',
length: 256,
},
/* extractable */ false,
['encrypt', 'decrypt'],
)
return derivedKey
}
export async function encrypt(key: CryptoKey, data: string): Promise<string> {
const encrypted = await window.crypto.subtle.encrypt(
{
name: 'AES-CTR',
counter: new Uint8Array(16),
length: 128,
},
key,
str2ab(data),
)
return ab2str(encrypted)
}
export async function decrypt(key: CryptoKey, data: string): Promise<string> {
const arrayBuffer = str2ab(data)
const decrypted = await window.crypto.subtle.decrypt(
{
name: 'AES-CTR',
counter: new ArrayBuffer(16),
length: 128,
},
key,
arrayBuffer,
)
return ab2str(decrypted)
}
function ab2str(buf: ArrayBuffer): string {
return String.fromCharCode.apply(
null, new Uint16Array(buf) as unknown as number[])
}
function str2ab(str: string): ArrayBuffer {
const buf = new ArrayBuffer(str.length*2) // 2 bytes for each char
const bufView = new Uint16Array(buf)
for (let i=0, strLen=str.length; i < strLen; i++) {
bufView[i] = str.charCodeAt(i)
}
return buf
}

20
src/client/db/index.test.ts
View File

@ -4,16 +4,16 @@ describe('db', () => {
const TEST_DB = 'TEST_DB'
async function getError(promise: Promise<unknown>): Promise<Error> {
let error: Error
try {
await promise
} catch (err) {
error = err
}
expect(error!).toBeTruthy()
return error!
}
// async function getError(promise: Promise<unknown>): Promise<Error> {
// let error: Error
// try {
// await promise
// } catch (err) {
// error = err
// }
// expect(error!).toBeTruthy()
// return error!
// }
afterEach(async () => {
db && db.close()