# Wallet File Specification ## Wallet A wallet file in JSON format has the following basic structure: ``` { "name": "MyWallet", "version": "1.0", "scrypt": {}, "defaultOntid": "did:ont:TJNxJe2Ty8eSCjCDxDPwiS78NRAn8XPTFL", "defaultAccountAddress": "TJNxJe2Ty8eSCjCDxDPwiS78NRAn8XPTFL", "createTime": "2018-03-14T03:12:30.862Z", "identities": [], "accounts": [], "extra": null } ``` ```name``` is a label that the user has made to the wallet file. ```version``` is currently fixed at 1.0 and will be used for functional upgrades in the future. ```scrypt``` is a ScryptParameters object which describe the parameters of SCrypt algorithm used for encrypting and decrypting the private keys in the wallet. ```defaultOntid``` indicates the default identity in this wallet. ```defaultAccountAddress``` indicates the default digital assert account's address in this wallet. ```createTime``` is the createTime of this wallet, in UTC format. ```identities``` is an array of identity objects which describe the details of each identity in the wallet. ```accounts``` is an array of account objects which describe the details of each account in the wallet. ```extra``` is an object that is defined by the implementor of the client for storing extra data. This field can be null. Here is an example as below: ``` { "name": "mickey", "defaultOntid": "", "defaultAccountAddress": "", "createTime": "2018-06-30T08:52:01.519Z", "version": "1.0", "scrypt": { "n": 4096, "r": 8, "p": 8, "dkLen": 64 }, "identities": [{ "ontid": "did:ont:ATcHA9eYKyve8M74CB4p6Ssx7kwXjmREUa", "label": "mickey", "lock": false, "controls": [{ "id": "1", "algorithm": "ECDSA", "parameters": { "curve": "P-256" }, "key": "M+PnrYLVDrU0gkSzj0FAsvqCYv+HWEEUMDSyKSJACzJhZVglFU9tkfQKlLby5UCY", "address": "ATcHA9eYKyve8M74CB4p6Ssx7kwXjmREUa", "salt": "wwa12j4K0SyDP23+UDJNtA==", "enc-alg": "aes-256-gcm" }] }], "accounts": [{ "address": "AJQLNWy9X6qdeEFrSH6UzgEjadSsRiYDCS", "label": "mickey", "lock": false, "algorithm": "ECDSA", "parameters": { "curve": "P-256" }, "key": "qFbemAbu7fEjOJzAZZhGkmzp2YNxdSCuK7xyvhBAnUBX/FmAj2Ns84Y7frh6hfQv", "enc-alg": "aes-256-gcm", "salt": "u+SiqpRk17b0vIPesh4xXA==", "isDefault": false, "publicKey": "037fb6dfc9420e1d8275d9133d6d69fe64e8e3567241e7583234b9efa8b2ce7ae1", "signatureScheme": "SHA256withECDSA" }], "extra": null } ``` ## ScryptParameters ScryptParameters object has the following structure: ``` { "n": 16384, "r": 8, "p": 8, "dkLen" : 64 } ``` ```n``` is a parameter that defines the CPU/memory cost. Must be a value 2^N. ```r``` is a tuning parameter. ```p``` is a tuning parameter (parallelization parameter). A large value of p can increase computational cost of SCrypt without increasing the memory usage. ```dkLen``` is intended output length in octets of the derived key. ## Identity Identity object has the following structure: ``` { "ontid": "did:ont:TQLASLtT6pWbThcSCYU1biVqhMnzhTgLFq", "label": "MyIdentity", "lock": false, "isDefault" : false, "controls": [] } ``` ```ontid``` is the ontid of the identity. ```label``` is a label that the user has made to the identity. ```lock``` indicates whether the identity is locked by user. The client shouldn't update the infomation in a locked identity. ```isDefault``` indicates whether the identity is default. ```controls``` is an array of Controller objects which describes the details of each controller in the identity. ## Control Control object has the following structure: ``` { "algorithm": "ECDSA", "parameters": {}, "id": "1", "key": "6PYWB8m1bCnu5bQkRUKAwbZp2BHNvQ3BQRLbpLdTuizpyLkQPSZbtZfoxx", "address": "AQkGLumU1tnyJBGV1ZUmD229iQf9KRTTDL", "salt": "Rv4v3a4U1zFEq28/" } ``` ```algorithm``` is the algorithm used in the encryption system. ```parameters``` is the array of parameter objects used in the encryption system. ```id``` is the identify of this control. ```key``` is the private key of the account in the NEP-2 format. This field can be null (for watch-only addresses or non-standard addresses). ```address``` address in base58 format. ```salt``` 16 bytes salt value in base64 format. ## Parameter Parameter object has the following structure: ``` { "curve":"P-256" } ``` ```curve``` is the name of the elliptic curve. ## Account Account object has the following structure: ``` { "address": "AadQ5xRwrSsFTGzKfLHc1brzykdnf7phhD", "label": "a6575fd9", "lock": false, "algorithm": "ECDSA", "parameters": { "curve": "P-256" }, "key": "NyfxXX+xKDG2agrDy3espqX7N0k3MysTgqx5FxJGI8bkklZQO6+6BSluyBRvEsOx", "enc-alg": "aes-256-gcm", "salt": "MHct5XIedi86rQILJFi9lA==", "isDefault": false, "publicKey": "03e897f5a1ea306270e3e1e539c9065b6905e2430aae7f4802e1114f01634d7235", "signatureScheme": "SHA256withECDSA" } ``` ```address``` is the base58 encoded address of the account. ```enc-alg``` is the algorithm to encrypt the private key. ```salt``` is salt value for decryption. ```publicKey``` is the public key. ```signatureScheme``` is the signatureScheme used in signature. ```isDefault``` indicates whether the account is default. ```label``` is a label that the user has made to the account. ```lock``` indicates whether the account is locked by user. The client shouldn't spend the funds in a locked account. ```algorithm``` is the algorithms used in encryption system. ```parameters``` is the array of parameter objects used in encryption system. ```key``` is the private key of the account in the NEP-2 format. This field can be null (for watch-only addresses or non-standard addresses). ## QR Code Specification This is QR Code Specification is for both identity and account. ``` { "type":"I", "label": "MyIdentity", "algorithm": "ECDSA", "scrypt": { "n": 4096, "p": 8, "r": 8, "dkLen": 64 }, "key":"x0U3gy7mQMpzCYXwlt/oWZerSGaCUimSMN2UiSd2aKs=", "address" : "AQkGLumU1tnyJBGV1ZUmD229iQf9KRTTDL", "salt" : "Rv4v3a4U1zFEq28/", "parameters": { "curve": "P-256" } } ``` ```type``` is used to distinguish between identity or account, **I** indicates this is an identity , **A** indicates this is an account. ```label``` is the label of identity or account. ```algorithm``` is the algorithm for key pair generation. ```parameters``` is the parameters of the key pair generation algorithm. ```scrypt``` is the parameters for scrypt. ```key``` is the encrypted private key. ```address``` is the address in base58 format. ```salt``` is 16 bytes salt in base64 format.