jose/docs/classes/jwe_flattened_encrypt.FlattenedEncrypt.md

Class: FlattenedEncrypt

jwe/flattened/encrypt.FlattenedEncrypt

The FlattenedEncrypt class is a utility for creating Flattened JWE objects.

example ESM import

import { FlattenedEncrypt } from 'jose/jwe/flattened/encrypt'

example CJS import

const { FlattenedEncrypt } = require('jose/jwe/flattened/encrypt')

example Deno import

import { FlattenedEncrypt } from 'https://deno.land/x/jose@v3.20.0/jwe/flattened/encrypt.ts'

example Usage

const encoder = new TextEncoder()

const jwe = await new FlattenedEncrypt(encoder.encode('It’s a dangerous business, Frodo, going out your door.'))
  .setProtectedHeader({ alg: 'RSA-OAEP-256', enc: 'A256GCM' })
  .setAdditionalAuthenticatedData(encoder.encode('The Fellowship of the Ring'))
  .encrypt(publicKey)

console.log(jwe)

Table of contents

Constructors

• constructor

Methods

• encrypt
• setAdditionalAuthenticatedData
• setContentEncryptionKey
• setInitializationVector
• setKeyManagementParameters
• setProtectedHeader
• setSharedUnprotectedHeader
• setUnprotectedHeader

Constructors

constructor

• new FlattenedEncrypt(plaintext)

Parameters

Name	Type	Description
plaintext	Uint8Array	Binary representation of the plaintext to encrypt.

Methods

encrypt

▸ encrypt(key, options?): Promise<FlattenedJWE>

Encrypts and resolves the value of the Flattened JWE object.

Parameters

Name	Type	Description
key	KeyLike | Uint8Array	Public Key or Secret to encrypt the JWE with.
options?	EncryptOptions	JWE Encryption options.

Returns

Promise<FlattenedJWE>

---

setAdditionalAuthenticatedData

▸ setAdditionalAuthenticatedData(aad): FlattenedEncrypt

Sets the Additional Authenticated Data on the FlattenedEncrypt object.

Parameters

Name	Type	Description
aad	Uint8Array	Additional Authenticated Data.

Returns

FlattenedEncrypt

---

setContentEncryptionKey

▸ setContentEncryptionKey(cek): FlattenedEncrypt

Sets a content encryption key to use, by default a random suitable one is generated for the JWE enc" (Encryption Algorithm) Header Parameter. You do not need to invoke this method, it is only really intended for test and vector validation purposes.

Parameters

Name	Type	Description
cek	Uint8Array	JWE Content Encryption Key.

Returns

FlattenedEncrypt

---

setInitializationVector

▸ setInitializationVector(iv): FlattenedEncrypt

Sets the JWE Initialization Vector to use for content encryption, by default a random suitable one is generated for the JWE enc" (Encryption Algorithm) Header Parameter. You do not need to invoke this method, it is only really intended for test and vector validation purposes.

Parameters

Name	Type	Description
iv	Uint8Array	JWE Initialization Vector.

Returns

FlattenedEncrypt

---

setKeyManagementParameters

▸ setKeyManagementParameters(parameters): FlattenedEncrypt

Sets the JWE Key Management parameters to be used when encrypting. Use of this is method is really only needed for ECDH-ES based algorithms when utilizing the Agreement PartyUInfo or Agreement PartyVInfo parameters. Other parameters will always be randomly generated when needed and missing.

Parameters

Name	Type	Description
parameters	JWEKeyManagementHeaderParameters	JWE Key Management parameters.

Returns

FlattenedEncrypt

---

setProtectedHeader

▸ setProtectedHeader(protectedHeader): FlattenedEncrypt

Sets the JWE Protected Header on the FlattenedEncrypt object.

Parameters

Name	Type	Description
protectedHeader	JWEHeaderParameters	JWE Protected Header.

Returns

FlattenedEncrypt

---

setSharedUnprotectedHeader

▸ setSharedUnprotectedHeader(sharedUnprotectedHeader): FlattenedEncrypt

Sets the JWE Shared Unprotected Header on the FlattenedEncrypt object.

Parameters

Name	Type	Description
sharedUnprotectedHeader	JWEHeaderParameters	JWE Shared Unprotected Header.

Returns

FlattenedEncrypt

---

setUnprotectedHeader

▸ setUnprotectedHeader(unprotectedHeader): FlattenedEncrypt

Sets the JWE Per-Recipient Unprotected Header on the FlattenedEncrypt object.

Parameters

Name	Type	Description
unprotectedHeader	JWEHeaderParameters	JWE Per-Recipient Unprotected Header.

Returns

FlattenedEncrypt