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# Identity

## Definition

Variables in single quotes `'...'` can or must be changed according to your specific case.

`public_key` is the public key of an identity.

`name` is the name of an identity.

`newname` is the new name of an identity for the rename request.

`subsystem` is a subsystem, e.g. namestore.

### Identity

An identity consists of a `public key` and a `name`. An identity can be assigned to a `subsystem`. Each subsystem can only have one default identity.

### Error Response

An error response is sent in the JSON format: `{"error":"*error_description*"}`

Following numbers are added for references inside the documentation only.

Error descriptions are:

    Nr. Error Description           - Explanation
    1)  Unknown Error               - Error is not specified
    2)  No identity found           - Identity was not found with given name, public key or no identity was found at all
    3)  Missing identity public key - Identity public key length is zero
    4)  Missing identity name       - Identity name length is zero
    5)  Missing subsystem name      - Subsystem name length is zero
    6)  No data                     - No JSON data given
    7)  Data invalid                - Wrong JSON data given
    8)  Rename failed               - Rename request failed due to wrong name, etc.
    9)  Setting subsystem failed    - Setting the subsystem for an identity failed (usually this error does not occur)

Error `1)` is always possible and is not listed in following requests.

ATTENTION: Any error message from the Identity API (not REST API) can occur and can be returned in the error response. These responses are not listed here.

### Response Code

A response of a message has a HTTP response code. Usually, this code is 200 OK for a successful response. The code changes in some cases:

    a) 200 OK         - Normal response (but may contain an error message)
    b) 201 Created    - Success after POST request
    c) 204 No Content - Success PUT or DELETE request
    d) 404 Not Found  - Identity is not found with identifier
    e) 409 Conflict   - PUT or POST request not possible due to existing duplicate

`d) 404 Not Found` is always used when the error message is either `2)`, `3)` or `4)`.

## Requests

### GET Requests

Title | Returns all identities with name and public key
URL | `/identity/all`
Method | GET
URL Params | none
Data Params | none
Success Response | [{“pubkey”:”public_key”, “name”:”name”},…]
Error Response | {“error”:”error_desc”} 2
Attention | The response in this request is an array!

Title | Returns only a specific identity
URL | `/identity/pubkey/'public_key'` or `/identity/name/'name'`
Method | GET
URL Params | none
Data Params | none
Success Response | {“pubkey”:”public_key”, “name”:”name”}
Error Response | {“error”:”error_desc”} 2; 3 or 4

Title | Returns default identity for specific subsystem
URL | `/identity/subsystem/'subsystem'`
Method | GET
URL Params | none
Data Params | none
Success Response | {“pubkey”:”public_key”, “name”:”name”}
Error Response | {“error”:”error_desc”} 2; 5

### POST Request

Title | Creates an identity
URL | `/identity`
Method | POST
URL Params | none
Data Params | {“name”:’name’}
Success Response | Response Code: :literal:` b) 201 Created`
Error Response | {“error”:”error_desc”} 6; 7 or Response Code: `e) 409 Conflict` if name in use

### PUT Request

Title | Changes name of identity
URL | `/identity/pubkey/'public_key'` or `/identity/name/'name'`
Method | PUT
URL Params | none
Data Params | {“newname”:’newname’}
Success Response | Response Code: `c) 204 No Content`
Error Response | {“error”:”error_desc”} 2; 3 or 4; 6; 7; 8 or Response Code: `e) 409 Conflict` if newname in use

Title | Sets identity as default for a subsystem
URL | `/identity/subsystem/'name'`
Method | PUT
URL Params | none
Data Params | {“subsystem”:’subsystem’}
Success Response | Response Code: `c) 204 No Content`
Error Response | {“error”:”error_desc”} 2; 4; 6; 7; 9

### DELETE Request

Title | Deletes specific identity
URL | `/identity/pubkey/'public_key'` or `/identity/name/'name'`
Method | DELETE
URL Params | none
Data Params | none
Success Response | Response Code: `c) 204 No Content`
Error Response | {“error”:”error_desc”} 2; 3 or 4

### OPTIONS Request

Title | Gets request options
URL | `/identity`
Method | OPTIONS
URL Params | none
Data Params | none
Success Response |
Error Response | none