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general.test.mjs
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general.test.mjs
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import test from 'ava'
import * as crypto from 'crypto'
const root = !('WEBCRYPTO' in process.env) ? '#dist' : '#dist/webcrypto'
const { GeneralEncrypt, generalDecrypt, generateKeyPair } = await import(root)
test.before(async (t) => {
const encode = TextEncoder.prototype.encode.bind(new TextEncoder())
t.context.plaintext = encode('It’s a dangerous business, Frodo, going out your door.')
t.context.additionalAuthenticatedData = encode('The Fellowship of the Ring')
t.context.initializationVector = crypto.randomFillSync(new Uint8Array(12))
t.context.secret = crypto.randomFillSync(new Uint8Array(32))
t.context.secret2 = crypto.randomFillSync(new Uint8Array(16))
})
test('General JWE encryption', async (t) => {
const generalJwe = await new GeneralEncrypt(t.context.plaintext)
.setAdditionalAuthenticatedData(t.context.additionalAuthenticatedData)
.setProtectedHeader({ enc: 'A256GCM' })
.setSharedUnprotectedHeader({ foo: 'bar' })
.addRecipient(t.context.secret)
.setUnprotectedHeader({ alg: 'A256GCMKW' })
.addRecipient(t.context.secret2)
.setUnprotectedHeader({ alg: 'A128GCMKW' })
.encrypt()
t.true(generalJwe.aad && typeof generalJwe.aad === 'string')
t.true(generalJwe.ciphertext && typeof generalJwe.ciphertext === 'string')
t.true(generalJwe.iv && typeof generalJwe.iv === 'string')
t.true(generalJwe.protected && typeof generalJwe.protected === 'string')
t.true(
generalJwe.unprotected &&
typeof generalJwe.unprotected === 'object' &&
Object.keys(generalJwe.unprotected).length === 1,
)
t.true(generalJwe.tag && typeof generalJwe.tag === 'string')
t.is(generalJwe.recipients.length, 2)
for (const recipient of generalJwe.recipients) {
t.true(recipient.encrypted_key && typeof recipient.encrypted_key === 'string')
t.true(
recipient.header &&
typeof recipient.header === 'object' &&
Object.keys(recipient.header).length !== 0,
)
}
for (const secret of [t.context.secret, t.context.secret2]) {
await generalDecrypt(generalJwe, secret)
}
})
test('General JWE encryption (single recipient dir)', async (t) => {
const generalJwe = await new GeneralEncrypt(t.context.plaintext)
.setAdditionalAuthenticatedData(t.context.additionalAuthenticatedData)
.setProtectedHeader({ enc: 'A256GCM' })
.setSharedUnprotectedHeader({ alg: 'A256GCMKW' })
.addRecipient(t.context.secret)
.encrypt()
t.true(generalJwe.aad && typeof generalJwe.aad === 'string')
t.true(generalJwe.ciphertext && typeof generalJwe.ciphertext === 'string')
t.true(generalJwe.iv && typeof generalJwe.iv === 'string')
t.true(generalJwe.protected && typeof generalJwe.protected === 'string')
t.true(generalJwe.tag && typeof generalJwe.tag === 'string')
t.true(
generalJwe.unprotected &&
typeof generalJwe.unprotected === 'object' &&
Object.keys(generalJwe.unprotected).length === 1,
)
t.is(generalJwe.recipients.length, 1)
t.true(
generalJwe.recipients[0].encrypted_key &&
typeof generalJwe.recipients[0].encrypted_key === 'string',
)
t.false('header' in generalJwe.recipients[0])
await generalDecrypt(generalJwe, t.context.secret)
})
test('General JWE encryption (single recipient ECDH-ES)', async (t) => {
const kp = await generateKeyPair('ECDH-ES')
const generalJwe = await new GeneralEncrypt(t.context.plaintext)
.setAdditionalAuthenticatedData(t.context.additionalAuthenticatedData)
.setProtectedHeader({ enc: 'A256GCM' })
.setSharedUnprotectedHeader({ alg: 'ECDH-ES' })
.addRecipient(kp.publicKey)
.encrypt()
t.true(generalJwe.aad && typeof generalJwe.aad === 'string')
t.true(generalJwe.ciphertext && typeof generalJwe.ciphertext === 'string')
t.true(generalJwe.iv && typeof generalJwe.iv === 'string')
t.true(generalJwe.protected && typeof generalJwe.protected === 'string')
t.true(generalJwe.tag && typeof generalJwe.tag === 'string')
t.deepEqual(generalJwe.recipients, [{}])
t.true(
generalJwe.unprotected &&
typeof generalJwe.unprotected === 'object' &&
Object.keys(generalJwe.unprotected).length === 1,
)
await generalDecrypt(generalJwe, kp.privateKey)
})
test('General JWE format validation', async (t) => {
const encrypt = new GeneralEncrypt(t.context.plaintext)
.setProtectedHeader({ bar: 'baz' })
.setSharedUnprotectedHeader({ foo: 'bar' })
.setAdditionalAuthenticatedData(t.context.additionalAuthenticatedData)
encrypt.addRecipient(t.context.secret).setUnprotectedHeader({ alg: 'A256GCMKW', enc: 'A256GCM' })
const generalJwe = await encrypt.encrypt()
{
await t.throwsAsync(generalDecrypt(null, t.context.secret), {
message: 'General JWE must be an object',
code: 'ERR_JWE_INVALID',
})
}
{
await t.throwsAsync(generalDecrypt({ recipients: null }, t.context.secret), {
message: 'JWE Recipients missing or incorrect type',
code: 'ERR_JWE_INVALID',
})
}
{
await t.throwsAsync(generalDecrypt({ recipients: [null] }, t.context.secret), {
message: 'JWE Recipients missing or incorrect type',
code: 'ERR_JWE_INVALID',
})
}
{
const jwe = { ...generalJwe, recipients: [] }
await t.throwsAsync(generalDecrypt(jwe, t.context.secret), {
message: 'JWE Recipients has no members',
code: 'ERR_JWE_INVALID',
})
}
{
const jwe = { ...generalJwe, recipients: [{}] }
await t.throwsAsync(generalDecrypt(jwe, t.context.secret), {
message: 'decryption operation failed',
code: 'ERR_JWE_DECRYPTION_FAILED',
})
}
{
const jwe = { ...generalJwe, recipients: [generalJwe.recipients[0]] }
await t.notThrowsAsync(generalDecrypt(jwe, t.context.secret))
}
{
const jwe = { ...generalJwe, recipients: [generalJwe.recipients[0], {}] }
await t.notThrowsAsync(generalDecrypt(jwe, t.context.secret))
}
{
const jwe = { ...generalJwe, recipients: [{}, generalJwe.recipients[0]] }
await t.notThrowsAsync(generalDecrypt(jwe, t.context.secret))
}
})
test('decrypt empty data', async (t) => {
const jwe = await new GeneralEncrypt(new Uint8Array(0))
.setProtectedHeader({ alg: 'dir', enc: 'A128GCM' })
.addRecipient(new Uint8Array(16))
.encrypt()
t.is(jwe.ciphertext, '')
const { plaintext } = await generalDecrypt(jwe, new Uint8Array(16))
t.is(plaintext.byteLength, 0)
})