Settings

Some of Simple JWT’s behavior can be customized through settings variables in settings.py:

# Django project settings.py

from datetime import timedelta

...

SIMPLE_JWT = {
    'ACCESS_TOKEN_LIFETIME': timedelta(minutes=5),
    'REFRESH_TOKEN_LIFETIME': timedelta(days=1),
    'ROTATE_REFRESH_TOKENS': False,
    'BLACKLIST_AFTER_ROTATION': True,

    'ALGORITHM': 'HS256',
    'SIGNING_KEY': settings.SECRET_KEY,
    'VERIFYING_KEY': None,
    'AUDIENCE': None,
    'ISSUER': None,

    'AUTH_HEADER_TYPES': ('Bearer',),
    'USER_ID_FIELD': 'id',
    'USER_ID_CLAIM': 'user_id',

    'AUTH_TOKEN_CLASSES': ('rest_framework_simplejwt.tokens.AccessToken',),
    'TOKEN_TYPE_CLAIM': 'token_type',

    'JTI_CLAIM': 'jti',

    'SLIDING_TOKEN_REFRESH_EXP_CLAIM': 'refresh_exp',
    'SLIDING_TOKEN_LIFETIME': timedelta(minutes=5),
    'SLIDING_TOKEN_REFRESH_LIFETIME': timedelta(days=1),
}

Above, the default values for these settings are shown.

ACCESS_TOKEN_LIFETIME

A datetime.timedelta object which specifies how long access tokens are valid. This timedelta value is added to the current UTC time during token generation to obtain the token’s default “exp” claim value.

REFRESH_TOKEN_LIFETIME

A datetime.timedelta object which specifies how long refresh tokens are valid. This timedelta value is added to the current UTC time during token generation to obtain the token’s default “exp” claim value.

ROTATE_REFRESH_TOKENS

When set to True, if a refresh token is submitted to the TokenRefreshView, a new refresh token will be returned along with the new access token. This new refresh token will be supplied via a “refresh” key in the JSON response. New refresh tokens will have a renewed expiration time which is determined by adding the timedelta in the REFRESH_TOKEN_LIFETIME setting to the current time when the request is made. If the blacklist app is in use and the BLACKLIST_AFTER_ROTATION setting is set to True, refresh tokens submitted to the refresh view will be added to the blacklist.

BLACKLIST_AFTER_ROTATION

When set to True, causes refresh tokens submitted to the TokenRefreshView to be added to the blacklist if the blacklist app is in use and the ROTATE_REFRESH_TOKENS setting is set to True.

ALGORITHM

The algorithm from the PyJWT library which will be used to perform signing/verification operations on tokens. To use symmetric HMAC signing and verification, the following algorithms may be used: 'HS256', 'HS384', 'HS512'. When an HMAC algorithm is chosen, the SIGNING_KEY setting will be used as both the signing key and the verifying key. In that case, the VERIFYING_KEY setting will be ignored. To use asymmetric RSA signing and verification, the following algorithms may be used: 'RS256', 'RS384', 'RS512'. When an RSA algorithm is chosen, the SIGNING_KEY setting must be set to a string that contains an RSA private key. Likewise, the VERIFYING_KEY setting must be set to a string that contains an RSA public key.

SIGNING_KEY

The signing key that is used to sign the content of generated tokens. For HMAC signing, this should be a random string with at least as many bits of data as is required by the signing protocol. For RSA signing, this should be a string that contains an RSA private key that is 2048 bits or longer. Since Simple JWT defaults to using 256-bit HMAC signing, the SIGNING_KEY setting defaults to the value of the SECRET_KEY setting for your django project. Although this is the most reasonable default that Simple JWT can provide, it is recommended that developers change this setting to a value that is independent from the django project secret key. This will make changing the signing key used for tokens easier in the event that it is compromised.

VERIFYING_KEY

The verifying key which is used to verify the content of generated tokens. If an HMAC algorithm has been specified by the ALGORITHM setting, the VERIFYING_KEY setting will be ignored and the value of the SIGNING_KEY setting will be used. If an RSA algorithm has been specified by the ALGORITHM setting, the VERIFYING_KEY setting must be set to a string that contains an RSA public key.

AUDIENCE

The audience claim to be included in generated tokens and/or validated in decoded tokens. When set to None, this field is excluded from tokens and is not validated.

ISSUER

The issuer claim to be included in generated tokens and/or validated in decoded tokens. When set to None, this field is excluded from tokens and is not validated.

AUTH_HEADER_TYPES

The authorization header type(s) that will be accepted for views that require authentication. For example, a value of 'Bearer' means that views requiring authentication would look for a header with the following format: Authorization: Bearer <token>. This setting may also contain a list or tuple of possible header types (e.g. ('Bearer', 'JWT')). If a list or tuple is used in this way, and authentication fails, the first item in the collection will be used to build the “WWW-Authenticate” header in the response.

USER_ID_FIELD

The database field from the user model that will be included in generated tokens to identify users. It is recommended that the value of this setting specifies a field that does not normally change once its initial value is chosen. For example, specifying a “username” or “email” field would be a poor choice since an account’s username or email might change depending on how account management in a given service is designed. This could allow a new account to be created with an old username while an existing token is still valid which uses that username as a user identifier.

USER_ID_CLAIM

The claim in generated tokens which will be used to store user identifiers. For example, a setting value of 'user_id' would mean generated tokens include a “user_id” claim that contains the user’s identifier.

AUTH_TOKEN_CLASSES

A list of dot paths to classes that specify the types of token that are allowed to prove authentication. More about this in the “Token types” section below.

TOKEN_TYPE_CLAIM

The claim name that is used to store a token’s type. More about this in the “Token types” section below.

JTI_CLAIM

The claim name that is used to store a token’s unique identifier. This identifier is used to identify revoked tokens in the blacklist app. It may be necessary in some cases to use another claim besides the default “jti” claim to store such a value.

SLIDING_TOKEN_LIFETIME

A datetime.timedelta object which specifies how long sliding tokens are valid to prove authentication. This timedelta value is added to the current UTC time during token generation to obtain the token’s default “exp” claim value. More about this in the “Sliding tokens” section below.

SLIDING_TOKEN_REFRESH_LIFETIME

A datetime.timedelta object which specifies how long sliding tokens are valid to be refreshed. This timedelta value is added to the current UTC time during token generation to obtain the token’s default “exp” claim value. More about this in the “Sliding tokens” section below.

SLIDING_TOKEN_REFRESH_EXP_CLAIM

The claim name that is used to store the expiration time of a sliding token’s refresh period. More about this in the “Sliding tokens” section below.