jwt_encrypt.EncryptJWT.md

Class: EncryptJWT

The EncryptJWT class is a utility for creating Compact JWE formatted JWT strings.

example Usage

const jwt = await new jose.EncryptJWT({ 'urn:example:claim': true })
  .setProtectedHeader({ alg: 'dir', enc: 'A256GCM' })
  .setIssuedAt()
  .setIssuer('urn:example:issuer')
  .setAudience('urn:example:audience')
  .setExpirationTime('2h')
  .encrypt(secretKey)

console.log(jwt)

Table of contents

Constructors

• constructor

Methods

• encrypt
• replicateAudienceAsHeader
• replicateIssuerAsHeader
• replicateSubjectAsHeader
• setAudience
• setContentEncryptionKey
• setExpirationTime
• setInitializationVector
• setIssuedAt
• setIssuer
• setJti
• setKeyManagementParameters
• setNotBefore
• setProtectedHeader
• setSubject

Constructors

constructor

• new EncryptJWT(payload)

Parameters

Name	Type	Description
payload	JWTPayload	The JWT Claims Set object.

Methods

encrypt

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

Encrypts and returns the JWT.

Parameters

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

Returns

Promise<string>

---

replicateAudienceAsHeader

▸ replicateAudienceAsHeader(): EncryptJWT

Replicates the "aud" (Audience) Claim as a JWE Protected Header Parameter as per RFC7519#section-5.3.

Returns

EncryptJWT

---

replicateIssuerAsHeader

▸ replicateIssuerAsHeader(): EncryptJWT

Replicates the "iss" (Issuer) Claim as a JWE Protected Header Parameter as per RFC7519#section-5.3.

Returns

EncryptJWT

---

replicateSubjectAsHeader

▸ replicateSubjectAsHeader(): EncryptJWT

Replicates the "sub" (Subject) Claim as a JWE Protected Header Parameter as per RFC7519#section-5.3.

Returns

EncryptJWT

---

setAudience

▸ setAudience(audience): EncryptJWT

Set "aud" (Audience) Claim.

Parameters

Name	Type	Description
audience	string | string[]	"aud" (Audience) Claim value to set on the JWT Claims Set.

Returns

EncryptJWT

---

setContentEncryptionKey

▸ setContentEncryptionKey(cek): EncryptJWT

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

EncryptJWT

---

setExpirationTime

▸ setExpirationTime(input): EncryptJWT

Set "exp" (Expiration Time) Claim.

Parameters

Name	Type	Description
input	string | number	"exp" (Expiration Time) Claim value to set on the JWT Claims Set. When number is passed that is used as a value, when string is passed it is resolved to a time span and added to the current timestamp.

Returns

EncryptJWT

---

setInitializationVector

▸ setInitializationVector(iv): EncryptJWT

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

EncryptJWT

---

setIssuedAt

▸ setIssuedAt(input?): EncryptJWT

Set "iat" (Issued At) Claim.

Parameters

Name	Type	Description
input?	number	"iat" (Issued At) Claim value to set on the JWT Claims Set. Default is current timestamp.

Returns

EncryptJWT

---

setIssuer

▸ setIssuer(issuer): EncryptJWT

Set "iss" (Issuer) Claim.

Parameters

Name	Type	Description
issuer	string	"Issuer" Claim value to set on the JWT Claims Set.

Returns

EncryptJWT

---

setJti

▸ setJti(jwtId): EncryptJWT

Set "jti" (JWT ID) Claim.

Parameters

Name	Type	Description
jwtId	string	"jti" (JWT ID) Claim value to set on the JWT Claims Set.

Returns

EncryptJWT

---

setKeyManagementParameters

▸ setKeyManagementParameters(parameters): EncryptJWT

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

EncryptJWT

---

setNotBefore

▸ setNotBefore(input): EncryptJWT

Set "nbf" (Not Before) Claim.

Parameters

Name	Type	Description
input	string | number	"nbf" (Not Before) Claim value to set on the JWT Claims Set. When number is passed that is used as a value, when string is passed it is resolved to a time span and added to the current timestamp.

Returns

EncryptJWT

---

setProtectedHeader

▸ setProtectedHeader(protectedHeader): EncryptJWT

Sets the JWE Protected Header on the EncryptJWT object.

Parameters

Name	Type	Description
protectedHeader	CompactJWEHeaderParameters	JWE Protected Header. Must contain an "alg" (JWE Algorithm) and "enc" (JWE Encryption Algorithm) properties.

Returns

EncryptJWT

---

setSubject

▸ setSubject(subject): EncryptJWT

Set "sub" (Subject) Claim.

Parameters

Name	Type	Description
subject	string	"sub" (Subject) Claim value to set on the JWT Claims Set.

Returns

EncryptJWT