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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| import crypto from 'crypto'; | ||
| import randomBytes from './randomBytes'; | ||
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| /** | ||
| * Crypto replacement for expo | ||
| * | ||
| * @module otplib-expo/crypto | ||
| */ | ||
| export default { | ||
| createHmac: crypto.createHmac, | ||
| randomBytes | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| import crypto from './crypto'; | ||
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| describe('crypto', () => { | ||
| it('should expose an object with a used method', () => { | ||
| expect(typeof crypto).toBe('object'); | ||
| expect(typeof crypto.createHmac).toBe('function'); | ||
| expect(typeof crypto.randomBytes).toBe('function'); | ||
| }); | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| import hotp from 'otplib-hotp'; | ||
| import totp from 'otplib-totp'; | ||
| import authenticator from 'otplib-authenticator'; | ||
| import crypto from './crypto'; | ||
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| /** | ||
| * otplib-expo | ||
| * | ||
| * One-Time Password Library for use with https://expo.io | ||
| * | ||
| * @module otplib-expo | ||
| * @since 10.0.0 | ||
| */ | ||
| authenticator.options = { crypto }; | ||
| hotp.options = { crypto }; | ||
| totp.options = { crypto }; | ||
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| module.exports = { | ||
| authenticator, | ||
| hotp, | ||
| totp | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| /** | ||
| * randomBytes naive implementation. | ||
| * | ||
| * Required for expo applications that don't offer a native | ||
| * secure random implementaton | ||
| * | ||
| * @module otplib-expo/randomBytes | ||
| * @param {string} size - the size | ||
| * @return {Buffer} | ||
| */ | ||
| function randomBytes(size) { | ||
| if (size > 65536) { | ||
| throw new Error('Requested size of random bytes is too large'); | ||
| } | ||
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| if (size < 1) { | ||
| throw new Error('Requested size must be more than 0'); | ||
| } | ||
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| const rawBytes = new Uint8Array(size).map(() => randomUint8()); | ||
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| return new Buffer(rawBytes.buffer); | ||
| } | ||
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| function randomUint8() { | ||
| const low = 0; | ||
| const high = 255; | ||
| return Math.floor(Math.random() * (high - low + 1) + low); | ||
| } | ||
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| export default randomBytes; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| import randomBytes from './randomBytes'; | ||
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| describe('randomBytes', () => { | ||
| const tooLarge = 'Requested size of random bytes is too large'; | ||
| const wrongSize = 'Requested size must be more than 0'; | ||
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| it('should return a buffer', () => { | ||
| const result = randomBytes(10); | ||
| expect(result).toBeInstanceOf(Buffer); | ||
| expect(result).toHaveLength(10); | ||
| }); | ||
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| it('should throw when size is too big', () => { | ||
| expect(() => randomBytes(65537)).toThrowError(tooLarge); | ||
| }); | ||
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| it('should throw when size is < 1', () => { | ||
| expect(() => randomBytes(0)).toThrowError(wrongSize); | ||
| }); | ||
| }); |