hoodie-plugin-store-crypto
Advanced tools
End-to-end crypto plugin for the Hoodie client store.
This Hoodie plugin adds methods, to add, read, update and delete encrypted documents in your users store, while still being able to add, read, update and delete unencrypted documents.
It does this by adding an object to your Hoodie-client, with similar methods to the client's store. Those methods encrypt and decrypt objects, while using the corresponding methods from Hoodie to save them.
There is no server side to this plugin!
Everything of a doc will get encrypted. Except for _id, _rev, _deleted, _attachments, _conflicts and the hoodie object!
hoodie.store.add({foo: 'bar'})
.then(function (obj) {console.log(obj)})
hoodie.cryptoStore.setup('secret')
.then(async () => {
const salt = await hoodie.cryptoStore.unlock('secret')
const obj = await hoodie.cryptoStore.add({foo: 'bar'}) // adds the object encrypted
console.log(obj) // returns it unencrypted!
})
Please read the update notes for migrating from v1 to v2!.
This project heavily uses code and inspiration by @calvinmetcalf's crypto-pouch and Hoodie's hoodie-store-client.
Thank you to those projects and their maintainers.
There are 2 ways to use this plugin in your app:
This will add the cryptoStore to your /hoodie/client.js if you use the hoodie package.
First, install the plugin as dependency of your Hoodie app:
npm install --save hoodie-plugin-store-crypto
Then add it to the hoodie.plugins array in your app’s package.json file.
{
"name": "your-hoodie-app",
...
"hoodie": {
"plugins": [
"hoodie-plugin-store-crypto"
]
}
}
You can now start your app with npm start. There should now be an cryptoStore
property on your client hoodie instance. You can access it with
hoodie.cryptoStore.
If you are using a client bundler (e.g. Browserify or Webpack), then you can import it manually.
First, install the plugin as dev-dependency of your Hoodie app:
npm install --save-dev hoodie-plugin-store-crypto
Then import it and set it up:
var Hoodie = require('@hoodie/client')
var PouchDB = require('pouchdb')
var cryptoStore = require('hoodie-plugin-store-crypto')
var hoodie = new Hoodie({ // create an instance of the hoodie-client
url: window.location.origin,
PouchDB: PouchDB
})
cryptoStore(hoodie) // sets up hoodie.cryptoStore
To use the cryptoStore you need to set a password for encryption. This can be your users password to your app, or a special password, which they will enter or you generate.
There are 4 use-cases you must put in place:
The first use of the cryptoStore. Setup can get done in your sign up function, but also if you newly added this plugin.
Use cryptoStore.setup(password, [salt]) to set the
encryption password. cryptoStore.setup(password, [salt]) will not unlock your cryptoStore instance
(just like hoodie.account.signUp)!
A salt is a second part of a password. cryptoStore.setup(password, [salt]) will save the generated salt in hoodiePluginCryptoStore/salt, and use it. More about what the salt is.
Example:
async function signUp (username, password, cryptoPassword) {
const accountProperties = await hoodie.account.signUp({
username: username,
password: password
})
await hoodie.cryptoStore.setup(cryptoPassword)
return signIn(username, password, cryptoPassword) // Call your signIn function
}
Every time your user signs in you also need to unlock the cryptoStore.
Use cryptoStore.unlock(password) for unlocking.
unlock will try to pull hoodiePluginCryptoStore/salt from the server,
to have the latest version of it.
Example:
async function signIn (username, password, cryptoPassword) {
const accountProperties = await hoodie.account.signIn({
username: username,
password: password
})
await hoodie.cryptoStore.unlock(cryptoPassword)
// now do what you do after sign in.
}
cryptoStore will automatically listen to account.on('signout') events. And locks itself if it emits an event. You don't need to add any setup for it.
Usecases for the cryptoStore.lock() method are:
window.addEventListener('beforeunload', function (event) {
// do your cleanup
hoodie.cryptoStore.lock() // lock the cryptoStore in an cryptographic saver way.
// It overwrites the key data 10 times.
})
This plugin doesn't save your users password! That results in you having to unlock the cryptoStore on every instance/tap of your web-app!
Example:
async function unlock (cryptoPassword) {
await hoodie.cryptoStore.unlock(cryptoPassword) // then unlock
// now do what you do after unlocking
}
You can change the password and salt used for encryption with cryptoStore.changePassword(oldPassword, newPassword).
This method also updates all documents, that got encrypted with the old password!
Please sync before the password change! To update all documents.
Example:
async function changePassword (oldPassword, newPassword) {
await hoodie.connectionStatus.check() // check if your app is online
if (hoodie.connectionStatus.ok) { // if your app is online: sync your users store
await hoodie.store.sync()
}
const result = await hoodie.cryptoStore.changePassword(oldPassword, newPassword)
console.log(result.notUpdated) // array of ids of all docs that weren't updated
}
setPassword got split into setup and unlock.
All reading and writing methods fail now if this plugin wasn't unlocked!
v1 didn't check if the entered password was correct! This version does now!
It uses an encrypted random string in the hoodiePluginCryptoStore/salt doc. Saved in the check-field. With the same encryption as the other docs. It will get added/updated with setup and changePassword.
{
"_id": "hoodiePluginCryptoStore/salt",
"salt": "bf11fa9bafca73586e103d60898989d4",
"check": {
"nonce": "6e9cf8a4a6eee26f19ff8c70",
"tag": "0d2cfd645fe49b8a29ce22dbbac26b1e",
"data": "5481cf42b7e3f1d15477ed8f1d938bd9fd6103903be6dd4e146f69d9f124e34f33b7f ... this is 256 chars long ..."
}
}
It will still unlock, if no password check is present on the salt-doc! But it will add a check as soon as the first encrypted doc got read without an error!
This is to ensure backwards compatibility.
The password check autofix can get deactivated
To deactivate the password check autofix add the option noPasswordCheckAutoFix.
{
"name": "your-hoodie-app",
...
"hoodie": {
"plugins": [
"hoodie-plugin-store-crypto"
],
"app": {
"hoodie-plugin-store-crypto": {
"noPasswordCheckAutoFix": true
}
}
}
}
// Or if you set up your client yourself
var Hoodie = require('@hoodie/client')
var PouchDB = require('pouchdb')
var cryptoStore = require('hoodie-plugin-store-crypto')
var hoodie = new Hoodie({ // create an instance of the hoodie-client
url: '',
PouchDB: PouchDB
})
cryptoStore(hoodie, { noPasswordCheckAutoFix: true }) // sets up hoodie.cryptoStore
Then no password check will get added, until the next password change.
This plugin uses the sha256 and pbkdf2 algorithm for generating a key from your password. The key is a 32 char Hash. And for encryption and decryption of your docs the AES-GCM algorithm gets used.
Hoodie, CouchDB and PouchDB need _id, _rev, _deleted, _attachments and _conflicts to function. They and the content of the hoodie object, are not encrypted!
Everything else goes through JSON.stringify and gets encrypted.
This includes all fields of old documents. Those fields will then get deleted!
Please be aware, that the _id of a doc is not encrypted! Don't store important or personal information in the _id!
var pbkdf2 = require('native-crypto/pbkdf2')
var randomBytes = require('randombytes')
async function deriveKey (password) {
const doc = await hoodie.store.find('hoodiePluginCryptoStore/salt')
const digest = 'sha256'
const iterations = 100000
const salt = doc.salt != null && typeof doc.salt === 'string' && doc.salt.length === 32
? doc.salt
: randomBytes(16).toString('hex')
const key = await pbkdf2(password, Buffer.from(salt, 'hex'), iterations, 256 / 8, digest)
return {
key: key,
salt: salt
}
}
var encrypt = require('native-crypto/encrypt')
var randomBytes = require('randombytes')
var ignore = [
'_id',
'_rev',
'_deleted',
'_attachments',
'_conflicts',
'hoodie'
]
async function encryptDoc (key, doc) {
var nonce = randomBytes(12)
var outDoc = {
nonce: nonce.toString('hex')
}
ignore.forEach(function (key) {
outDoc[key] = doc[key]
delete doc[key]
})
var data = JSON.stringify(doc)
const response = await encrypt(key, nonce, data, Buffer.from(outDoc._id))
outDoc.tag = response.slice(-16).toString('hex')
outDoc.data = response.slice(0, -16).toString('hex')
return outDoc
}
var decrypt = require('native-crypto/decrypt')
var ignore = [
'_id',
'_rev',
'_deleted',
'_attachments',
'_conflicts',
'hoodie'
]
async function decryptDoc (key, doc) {
var data = Buffer.from(doc.data, 'hex')
var tag = Buffer.from(doc.tag, 'hex')
var encryptedData = Buffer.concat([data, tag])
var nonce = Buffer.from(doc.nonce, 'hex')
var aad = Buffer.from(doc._id)
const outData = await decrypt(key, nonce, encryptedData, aad)
var out = JSON.parse(outData)
ignore.forEach(function (key) {
var ignoreValue = doc[key]
if (ignoreValue !== undefined) {
out[key] = ignoreValue
}
})
return out
}
cryptoStore(hoodie, options)
Setup the cryptoStore and adds it to hoodie.
| Argument | Type | Description | Required |
|---|---|---|---|
hoodie | Object | Hoodie client instance | Yes |
options.noPasswordCheckAutoFix | Boolean | Deactivate password-check autofix. Default is false | No |
Returns undefined
Required if you setup your hoodie-client yourself! Else Hoodie does it for you!
Example
var Hoodie = require('@hoodie/client')
var PouchDB = require('pouchdb')
var cryptoStore = require('hoodie-plugin-store-crypto')
var hoodie = new Hoodie({ // create an instance of the hoodie-client
url: window.location.origin,
PouchDB: PouchDB
})
cryptoStore(hoodie) // sets up hoodie.cryptoStore
hoodie.cryptoStore.setup('test')
.then(function () {
console.log('done')
})
cryptoStore.setup(password)
Setup an users encryption.
| Argument | Type | Description | Required |
|---|---|---|---|
password | String | A password for encrypting the objects | Yes |
Sets up the encryption, generates a salt and saves it in hoodiePluginCryptoStore/salt.
A salt is a string that will get used with the password together for the encryption. More about what the salt is.
This will not unlock the cryptoStore!
Rejects if there is already a local or remote hoodiePluginCryptoStore/salt or _design/cryptoStore/salt doc!
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| badarg | 500 | password must be a string! | The password wasn't a string. |
| badarg | 500 | password is to short! | The password must be longer than 2 chars. (You should require an even longer password!) |
| unauthorized | 401 | Name or password is incorrect. | Did already setup. |
Example
async function signUp (username, password, cryptoPassword) {
const accountProperties = await hoodie.account.signUp({
username: username,
password: password
})
if (cryptoPassword == null) { // Use a separate password for encryption or the same
cryptoPassword = password
}
await hoodie.cryptoStore.setup(cryptoPassword)
return signIn(username, password, cryptoPassword) // Call your signIn function
}
cryptoStore.setup(password, salt)
Setup an user for encryption. But provide your own salt. This is not recommended!
| Argument | Type | Description | Required |
|---|---|---|---|
password | String | A password for encrypting the objects | Yes |
salt | String | To add another protection lair, as a second password. If this is missing, a salt will be generated. Which will result in a different encryption! | Yes |
Sets up the encryption and saves the salt in hoodiePluginCryptoStore/salt.
A salt is a string that will get used with the password together for the encryption.
More about what the salt is.
This will not unlock the cryptoStore!
Rejects if there is already a local or remote hoodiePluginCryptoStore/salt or _design/cryptoStore/salt doc!
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| badarg | 500 | password must be a string! | The password wasn't a string. |
| badarg | 500 | password is to short! | The password must be longer than 2 chars. (You should require an even longer password!) |
| badarg | 500 | salt must be a 32 char string! | The passed salt wasn't a string or not 32 chars long! |
| unauthorized | 401 | Name or password is incorrect. | Did already setup. |
Example
async function signUp (username, password, cryptoPassword, salt) {
const accountProperties = await hoodie.account.signUp({
username: username,
password: password
})
if (cryptoPassword == null) { // Use a separate password for encryption or the same
cryptoPassword = password
}
await hoodie.cryptoStore.setup(cryptoPassword, salt)
return signIn(username, password, cryptoPassword) // Call your signIn function
}
cryptoStore.unlock(password)
Unlock the cryptoStore. It will be ready for usage after it. The user must be setup first!
| Argument | Type | Description | Required |
|---|---|---|---|
password | String | The password used for encrypting the objects | Yes |
Uses the salt in hoodiePluginCryptoStore/salt or _design/cryptoStore/salt and unlocks the cryptoStore.
It will pull hoodiePluginCryptoStore/salt and _design/cryptoStore/salt from the remote and
reject if they don't exists or got deleted or the password mismatch.
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| badarg | 500 | password must be a string! | The password wasn't a string. |
| badarg | 500 | password is to short! | The password must be longer than 2 chars. |
| badarg | 500 | salt in "hoodiePluginCryptoStore/salt" must be a 32 char string! | The salt was changed and is not a 32 char string! |
| invalid_request | 400 | store is already unlocked! | Store is unlocked. |
| unauthorized | 401 | Name or password is incorrect. | The password wasn't correct. (user input) |
| not_found | 404 | missing | The salt-doc couldn't be found! Was it deleted or the user wasn't setup? |
Example
async function signIn (username, password, cryptoPassword) {
const accountProperties = await hoodie.account.signIn({
username: username,
password: password
})
await hoodie.cryptoStore.unlock(cryptoPassword)
// now do what you do after sign in.
}
cryptoStore.changePassword(oldPassword, newPassword)
Changes the encryption password and salt. Then it will update all encrypted documents.
All encrypted documents, that couldn't get decrypted, will not get updated! The Array, at the notUpdated field, will include all their _ids.
| Argument | Type | Description | Required |
|---|---|---|---|
oldPassword | String | The old password, that was used up until now | Yes |
newPassword | String | New password, with which the docs will be encrypted | Yes |
Resolves with an object with the new salt and an array (notUpdated) with the ids of not updated docs.
It will update all with oldPassword encrypted documents. And encrypt them with with the help of
the newPassword. It also updates the salt in hoodiePluginCryptoStore/salt.
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| badarg | 500 | New password must be a string! | The new password wasn't a string. |
| badarg | 500 | password is to short! | The password must be longer than 2 chars. |
| unauthorized | 401 | Name or password is incorrect. | The entered old password is wrong. |
Example
hoodie.cryptoStore.changePassword('my-old-password', 'secret').then(function (report) {
console.log('all documents are updated!')
console.log(report.salt) // the new salt
console.log(report.notUpdated) // array with all ids of encrypted docs that have not been updated
}).catch(function (error) {
console.error(error)
})
cryptoStore.lock()
This locks the store and every method fails until a new password is set. It also overwrites the internal key's memory in a in an cryptographic save way (10 times).
Resolves with a Boolean. true if the store is now locked, false if the store was already locked.
The cryptoStore listen automatically to hoodie.account.on('signout') events and locks itself.
cryptoStore.add(properties)
Encrypt and add a document to the users store.
| Argument | Type | Description | Required |
|---|---|---|---|
properties | Object | properties of document | Yes |
properties._id | String | If set, the document will be stored at given id | No |
Resolves with properties unencrypted and adds id (unless provided). And adds a hoodie property with createdAt and updatedAt properties. It will get encrypted.
{
"_id": "12345678-1234-1234-1234-123456789ABC",
"foo": "bar",
"hoodie": {
"createdAt": "2018-05-26T18:38:32.920Z",
"updatedAt": "2018-05-26T18:38:32.920Z"
}
}
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| bad_request | 400 | Document must be a JSON object | properties isn't an object. |
| Conflict | 409 | Object with id "id" already exists | An object with this _id already exists. |
Example
hoodie.cryptoStore.add({foo: 'bar'}).then(function (doc) {
console.log(doc.foo) // bar
}).catch(function (error) {
console.error(error)
})
cryptoStore.add([properties])
Encrypt and add one or more documents to the users store.
| Argument | Type | Description | Required |
|---|---|---|---|
arrayOfProperties | Array | Array of properties, see cryptoStore.add(properties) | Yes |
It adds _id (unless provided) and a hoodie property with createdAt and updatedAt properties. And encrypts them.
Resolves with an array of the added documents, unencrypted.
[
{
"_id": "12345678-1234-1234-1234-123456789ABC",
"foo": "bar",
"hoodie": {
"createdAt": "2018-05-26T18:38:32.920Z",
"updatedAt": "2018-05-26T18:38:32.920Z"
}
}
]
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| bad_request | 400 | Document must be a JSON object | properties isn't an object. |
| Conflict | 409 | Object with id "id" already exists | An object with this _id already exists. |
Example
hoodie.cryptoStore.add([{foo: 'bar'}, {bar: 'baz'}]).then(function (docs) {
console.log(docs.length) // 2
}).catch(function (error) {
console.error(error)
})
cryptoStore.find(id)
Find a document in the users store. And decrypt encrypted documents.
| Argument | Type | Description | Required |
|---|---|---|---|
id | String | Unique id of the document | Yes |
Resolves with properties unencrypted. Works on encrypted and unencrypted documents.
{
"_id": "12345678-1234-1234-1234-123456789ABC",
"foo": "bar",
"hoodie": {
"createdAt": "2018-05-26T18:38:32.920Z",
"updatedAt": "2018-05-26T18:38:32.920Z"
}
}
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| Not found | 404 | Object with id "id" is missing | There is no object with this _id. |
Example
hoodie.cryptoStore.find('12345678-1234-1234-1234-123456789ABC').then(function (doc) {
console.log(doc)
}).catch(function (error) {
console.error(error)
})
cryptoStore.find(doc)
Find a document in the users store. And decrypt encrypted documents.
| Argument | Type | Description | Required |
|---|---|---|---|
doc | Object | Document with _id property | Yes |
Resolves with properties unencrypted. Works on encrypted and unencrypted documents.
{
"_id": "12345678-1234-1234-1234-123456789ABC",
"foo": "bar",
"hoodie": {
"createdAt": "2018-05-26T18:38:32.920Z",
"updatedAt": "2018-05-26T18:38:32.920Z"
}
}
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| Not found | 404 | Object with id "id" is missing | There is no object with this _id. |
Example
hoodie.cryptoStore.find(doc).then(function (doc) {
console.log(doc)
}).catch(function (error) {
console.error(error)
})
cryptoStore.find([doc])
Find one or more documents in the users store. And decrypt encrypted documents.
| Argument | Type | Description | Required |
|---|---|---|---|
idsOrDocs | Array | Array of id (String) or doc (Object) items | Yes |
Resolves with array of properties unencrypted. Works on encrypted and unencrypted documents.
[
{
"_id": "12345678-1234-1234-1234-123456789ABC",
"foo": "bar",
"hoodie": {
"createdAt": "2018-05-26T18:38:32.920Z",
"updatedAt": "2018-05-26T18:38:32.920Z"
}
}
]
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| Not found | 404 | Object with id "id" is missing | There is no object with this _id. |
Example
hoodie.cryptoStore.find([
doc,
"12345678-1234-1234-1234-123456789ABC"
]).then(function (docs) {
console.log(docs.length) // 2
}).catch(function (error) {
console.error(error)
})
cryptoStore.findOrAdd(id, doc)
Find a document in the users store. And decrypt encrypted documents. If no document is present: doc will get added (and encrypted).
| Argument | Type | Description | Required |
|---|---|---|---|
id | String | Unique id of the document | Yes |
doc | Object | Document that will be saved if no document with the id exists | Yes |
Resolves with properties unencrypted. Works on encrypted and unencrypted documents. If doc gets added, it will also encrypt it and add a hoodie property with createdAt and updatedAt properties.
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| missing_id | 412 | _id is required for puts | id is not a string or an object with an _id. |
Example
hoodie.cryptoStore.findOrAdd('12345678-1234-1234-1234-123456789ABC', doc).then(function (doc) {
console.log(doc)
}).catch(function (error) {
console.error(error)
})
cryptoStore.findOrAdd(doc)
Find a document in the users store. And decrypt encrypted documents. If no document is present: doc will get added (and encrypted).
| Argument | Type | Description | Required |
|---|---|---|---|
doc | Object | Document with _id property | Yes |
Resolves with properties unencrypted. Works on encrypted and unencrypted documents. If doc gets added, it will also encrypt it and add a hoodie property with createdAt and updatedAt properties.
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| missing_id | 412 | _id is required for puts | id is not a string or an object with an _id. |
Example
hoodie.cryptoStore.findOrAdd(doc).then(function (doc) {
console.log(doc)
}).catch(function (error) {
console.error(error)
})
cryptoStore.findOrAdd(idsOrDocs)
Find one or more documents in the users store. And decrypt encrypted documents. If a document is not present: a new one will get added (and encrypted).
| Argument | Type | Description | Required |
|---|---|---|---|
idsOrDocs | Array | Array of documents with _id property or ids | Yes |
Resolves with an array of properties unencrypted. Works on encrypted and unencrypted documents. If a doc gets added, it will also encrypt it and add a hoodie property with createdAt and updatedAt properties.
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| missing_id | 412 | _id is required for puts | id is not a string or an object with an _id. |
Example
hoodie.cryptoStore.findOrAdd([
doc,
'12345678-1234-1234-1234-123456789ABC'
]).then(function (docs) {
console.log(docs.length) // 2
}).catch(function (error) {
console.error(error)
})
cryptoStore.findAll(filterFunction)
Find all documents. And decrypt encrypted documents. The filterFunction filters out documents, the same way as Array.prototype.filter does.
| Argument | Type | Description | Required |
|---|---|---|---|
filterFunction | Function | Function that will be called for every doc with doc, index and arrayOfAllDocs. And returns true if doc should be returned, false if not. | No |
Resolves with array of properties unencrypted. Works on encrypted and unencrypted documents.
[
{
"_id": "12345678-1234-1234-1234-123456789ABC",
"foo": "bar",
"hoodie": {
"createdAt": "2018-05-26T18:38:32.920Z",
"updatedAt": "2018-05-26T18:38:32.920Z"
}
}
]
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
Example
function filter (doc, index, allDocs) {
return index % 2 === 0
}
hoodie.cryptoStore.findAll(filter).then(function (docs) {
console.log(docs.length)
}).catch(function (error) {
console.error(error)
})
cryptoStore.update(id, changedProperties)
Find a document with id and update all changedProperties. Then encrypt it.
| Argument | Type | Description | Required |
|---|---|---|---|
id | String | Unique id of the document | Yes |
changedProperties | Object | Properties that should be changed | Yes |
Resolves with updated properties unencrypted. Works on encrypted and unencrypted documents. Unencrypted documents will get encrypted!
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| bad_request | 400 | Document must be a JSON object | changedProperties isn't an object. |
| not_found | 404 | missing | There is no object with this _id. |
| - | - | Must provide change | changedProperties isn't an object or function. |
Example
hoodie.cryptoStore.update('12345678-1234-1234-1234-123456789ABC', {foo: 'bar'}).then(function (doc) {
console.log(doc)
}).catch(function (error) {
console.error(error)
})
cryptoStore.update(id, updateFunction)
Find a document with id and update it with an updateFunction. Then encrypt it.
The document will be how the updateFunction changes it. This can add, update and delete field on the document.
| Argument | Type | Description | Required |
|---|---|---|---|
id | String | Unique id of the document | Yes |
updateFunction | Function | Function that get the document passed and changes the document. | Yes |
Resolves with updated properties unencrypted. Works on encrypted and unencrypted documents. Unencrypted documents will get encrypted!
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| bad_request | 400 | Document must be a JSON object | updateFunction isn't an object or function. |
| not_found | 404 | missing | There is no object with this _id. |
| - | - | Must provide change | updateFunction isn't an object or function. |
Example
function updater (doc) {
doc.foo = 'bar'
}
hoodie.cryptoStore.update('12345678-1234-1234-1234-123456789ABC', updater).then(function (doc) {
console.log(doc.foo) // bar
}).catch(function (error) {
console.error(error)
})
cryptoStore.update(doc)
Find a document with _id of that object. And assigns all properties of this object to the doc. And then encrypts it.
| Argument | Type | Description | Required |
|---|---|---|---|
doc | Object | Properties that should be changed with a _id property | Yes |
Resolves with updated properties unencrypted. Works on encrypted and unencrypted documents. Unencrypted documents will get encrypted!
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| bad_request | 400 | Document must be a JSON object | doc isn't an object with an _id field. |
| not_found | 404 | missing | There is no object with this _id. |
Example
hoodie.cryptoStore.update({
_id: '12345678-1234-1234-1234-123456789ABC',
foo: 'bar'
}).then(function (doc) {
console.log(doc)
}).catch(function (error) {
console.error(error)
})
cryptoStore.update(arrayOfDocs)
Find one or more documents. It uses the _id of every object to find the document. Then all properties of that object will get assigned to the doc. And then encrypts it.
| Argument | Type | Description | Required |
|---|---|---|---|
arrayOfDocs | Array | Array properties that should be changed with a _id property | Yes |
Resolves with an array of updated properties unencrypted. Works on encrypted and unencrypted documents. Unencrypted documents will get encrypted!
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| bad_request | 400 | Document must be a JSON object | This element in the array isn't an object with an _id field. |
| not_found | 404 | missing | There is no object with this _id. |
Example
hoodie.cryptoStore.update([
{
_id: '12345678-1234-1234-1234-123456789ABC',
foo: 'bar'
},
otherDoc
]).then(function (docs) {
console.log(docs.length) // 2
}).catch(function (error) {
console.error(error)
})
cryptoStore.updateOrAdd(id, doc)
Try to find and update a doc with id. If none exist add one with id as its `_id' and doc as its properties. And encrypt the document.
| Argument | Type | Description | Required |
|---|---|---|---|
id | String | Unique id of the document | Yes |
doc | Object | Properties that should be changed or added if doc doesn't exist | Yes |
Resolves with updated properties unencrypted. Updates existing documents and adds nonexistent docs. Works on encrypted and unencrypted documents. Unencrypted documents will get encrypted! If the doc gets added, it will encrypt it and add a hoodie property with createdAt and updatedAt properties added.
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| bad_request | 400 | Document must be a JSON object | doc isn't an object. |
Example
hoodie.cryptoStore.updateOrAdd('12345678-1234-1234-1234-123456789ABC', {foo: 'bar'}).then(function (doc) {
console.log(doc)
}).catch(function (error) {
console.error(error)
})
cryptoStore.updateOrAdd(doc)
Try to find and update a doc with _id. If none exist add this doc as it. And encrypt the document.
| Argument | Type | Description | Required |
|---|---|---|---|
doc | Object | Properties that should be changed or added with a _id property | Yes |
Resolves with updated properties unencrypted. Updates existing documents and adds nonexistent docs. Works on encrypted and unencrypted documents. Unencrypted documents will get encrypted! If the doc gets added, it will encrypt it and add a hoodie property with createdAt and updatedAt properties added.
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| bad_request | 400 | Document must be a JSON object | doc isn't an object with an _id field. |
Example
hoodie.cryptoStore.updateOrAdd({
_id: '12345678-1234-1234-1234-123456789ABC',
foo: 'bar'
}).then(function (doc) {
console.log(doc)
}).catch(function (error) {
console.error(error)
})
cryptoStore.updateOrAdd(arrayOfDocs)
Try to find and update one or more documents. It uses the _id of every object to find the document. If a document doesn't exist, that object will get added as it. And encrypt the document.
| Argument | Type | Description | Required |
|---|---|---|---|
arrayOfDocs | Array | Array properties that should be changed or added with a _id property | Yes |
Resolves with an array of updated properties unencrypted. Updates existing documents and adds nonexistent docs. Works on encrypted and unencrypted documents. Unencrypted documents will get encrypted! If the doc gets added, it will encrypt it and add a hoodie property with createdAt and updatedAt properties added.
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| bad_request | 400 | Document must be a JSON object | This element in the array isn't an object with an _id field. |
Example
hoodie.cryptoStore.updateOrAdd([
{
_id: '12345678-1234-1234-1234-123456789ABC',
foo: 'bar'
},
otherDoc
]).then(function (docs) {
console.log(docs.length) // 2
}).catch(function (error) {
console.error(error)
})
cryptoStore.updateAll(changedProperties)
Find all documents and update them. Assign changedProperties to every document. And then encrypt all documents.
| Argument | Type | Description | Required |
|---|---|---|---|
changedProperties | Object | Properties that should be changed by all documents | Yes |
Resolves with updated properties unencrypted. Works on encrypted and unencrypted documents. Unencrypted documents will get encrypted!
This updates and encrypts all documents with its idPrefix!
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| - | - | Must provide object or function | changedProperties isn't an object or a function. |
Example
// This updates and encrypts all documents in the users store!
hoodie.cryptoStore.updateAll({foo: 'bar'}).then(function (docs) {
console.log(docs) // all docs!
}).catch(function (error) {
console.error(error)
})
// This updates and encrypts all documents that have an _id that starts with 'foo/'!
hoodie.cryptoStore.withIdPrefix('foo/').updateAll({foo: 'bar'}).then(function (docs) {
console.log(docs) // all docs whose _id starts with 'foo/'!
}).catch(function (error) {
console.error(error)
})
cryptoStore.updateAll(updateFunction)
Find all documents and update them. The updateFunction will be get called on every document. And then encrypt all documents.
| Argument | Type | Description | Required |
|---|---|---|---|
updateFunction | Function | Function that get the document passed and changes the document. | Yes |
Resolves with updated properties unencrypted. Works on encrypted and unencrypted documents. Unencrypted documents will get encrypted!
This updates and encrypts all documents with its idPrefix!
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| - | - | Must provide object or function | changedProperties isn't an object or a function. |
Example
// This updates and encrypts all documents in the users store!
hoodie.cryptoStore.updateAll(function (doc) {
doc.foo = 'bar'
}).then(function (docs) {
console.log(docs) // all docs!
}).catch(function (error) {
console.error(error)
})
// This updates and encrypts all documents that have an _id that starts with 'foo/'!
hoodie.cryptoStore.withIdPrefix('foo/').updateAll(function (doc) {
doc.foo = 'bar'
}).then(function (docs) {
console.log(docs) // all docs whose _id starts with 'foo/'!
}).catch(function (error) {
console.error(error)
})
cryptoStore.remove(id)
Find a document with id and removes it.
| Argument | Type | Description | Required |
|---|---|---|---|
id | String | Unique id of the document | Yes |
Resolves with properties unencrypted. Works on encrypted and unencrypted documents. It set the document to deleted. Unencrypted documents will get encrypted! It adds deletedAt to the hoodie property.
{
"_id": "12345678-1234-1234-1234-123456789ABC",
"_deleted": true,
"foo": "bar",
"hoodie": {
"createdAt": "2018-05-26T18:38:32.920Z",
"updatedAt": "2018-05-30T00:05:46.976Z",
"deletedAt": "2018-05-30T00:05:46.976Z"
}
}
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| not_found | 404 | missing | There is no object with this _id. |
Example
hoodie.cryptoStore.remove('12345678-1234-1234-1234-123456789ABC').then(function (doc) {
console.log(doc)
}).catch(function (error) {
console.error(error)
})
cryptoStore.remove(doc)
Find a document using the _id of that doc. It will update, remove, and encrypt the document.
| Argument | Type | Description | Required |
|---|---|---|---|
doc | Object | Properties that should be changed with a _id property | Yes |
Resolves with properties unencrypted. Works on encrypted and unencrypted documents. It set the document to deleted and updates properties. Unencrypted documents will get encrypted! It adds deletedAt to the hoodie property.
{
"_id": "12345678-1234-1234-1234-123456789ABC",
"_deleted": true,
"foo": "bar",
"hoodie": {
"createdAt": "2018-05-26T18:38:32.920Z",
"updatedAt": "2018-05-30T00:05:46.976Z",
"deletedAt": "2018-05-30T00:05:46.976Z"
}
}
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| bad_request | 400 | Document must be a JSON object | doc isn't an object with an _id field. |
| not_found | 404 | missing | There is no object with this _id. |
Example
hoodie.cryptoStore.remove({
_id: '12345678-1234-1234-1234-123456789ABC',
foo: 'bar'
}).then(function (doc) {
console.log(doc.foo) // bar
}).catch(function (error) {
console.error(error)
})
cryptoStore.remove(idsOrDocs)
Find one or more documents using the _id of that doc. It will update, remove, and encrypt all those documents.
| Argument | Type | Description | Required |
|---|---|---|---|
idsOrDocs | Array | Properties that should be changed with a _id property or ids | Yes |
Resolves with properties unencrypted. Works on encrypted and unencrypted documents. It set the document to deleted and updates properties. Unencrypted documents will get encrypted! It adds deletedAt to the hoodie property.
[
{
"_id": "12345678-1234-1234-1234-123456789ABC",
"_deleted": true,
"foo": "bar",
"hoodie": {
"createdAt": "2018-05-26T18:38:32.920Z",
"updatedAt": "2018-05-30T00:05:46.976Z",
"deletedAt": "2018-05-30T00:05:46.976Z"
}
}
]
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
| bad_request | 400 | Document must be a JSON object | That element of the array isn't an object with an _id field or a string. |
| not_found | 404 | missing | There is no object with this _id. |
Example
hoodie.cryptoStore.remove([
doc,
'12345678-1234-1234-1234-123456789ABC'
]).then(function (docs) {
console.log(docs.length) // 2
}).catch(function (error) {
console.error(error)
})
cryptoStore.removeAll(filterFunction)
Remove all documents. If a filterFunction gets passed, it will behave like Array.prototype.filter. The resulting documents will get then removed and encrypted.
| Argument | Type | Description | Required |
|---|---|---|---|
filterFunction | Function | Function that will be called for every doc with doc, index and arrayOfAllDocs. And returns true if doc should be returned, false if not. | No |
Resolves with updated properties unencrypted. Works on encrypted and unencrypted documents. Unencrypted documents will get encrypted!
[
{
"_id": "12345678-1234-1234-1234-123456789ABC",
"_deleted": true,
"foo": "bar",
"hoodie": {
"createdAt": "2018-05-26T18:38:32.920Z",
"updatedAt": "2018-05-30T00:05:46.976Z",
"deletedAt": "2018-05-30T00:05:46.976Z"
}
}
]
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| unauthorized | 401 | Name or password is incorrect. | This plugin wasn't unlocked yet. |
Example
// Just like Array.prototype.filter()
function filter (doc, index, allDocs) {
return index % 2 === 0
}
hoodie.cryptoStore.removeAll(filter).then(function (docs) {
console.log(docs.length)
}).catch(function (error) {
console.error(error)
})
cryptoStore.isEncrypted(object)
Checks if the object matches the structure of an encrypted document.
| Argument | Type | Description | Required |
|---|---|---|---|
object | Object | Document or object to be checked if it has the structure of an encrypted document. | Yes |
Returns a Boolean. Returns true if the passed object matches and encrypted document, and false if it is not.
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| bad_request | 400 | Document must be a JSON object | object isn't an object. |
Example
async function test () {
const obj = await hoodie.cryptoStore.add({
_id: 'test',
value: 3
})
hoodie.cryptoStore.isEncrypted(obj) // false; because the obj was decrypted!
const doc = await hoodie.store.find('test')
return hoodie.cryptoStore.isEncrypted(doc) // will return true
}
cryptoStore.isEncrypted(Promise.resolve(object))
Resolves the Promise. Then checks if the resulting object matches the structure of an encrypted document.
| Argument | Type | Description | Required |
|---|---|---|---|
Promise | Promise | Promise that will resolve into an Object. That object will then be check if it has the structure of an encrypted document. | Yes |
Resolves a Boolean. Resolves true if the passed object matches and encrypted document, and false if it is not.
Rejects with:
| Name | Status | Description | Why |
|---|---|---|---|
| bad_request | 400 | Document must be a JSON object | object isn't an object. |
| Error | - | - | Rejects with that error the passed Promise rejects to. |
Example
function isEncrypted (id) {
return hoodie.cryptoStore.isEncrypted(
hoodie.store.find(id)
)
}
cryptoStore.on(eventName, handler)
Add an event-handler. It behaves like hoodie-store-client's on. But will not emit events for unencrypted documents or documents it couldn't decrypted. It will also decrypt the document.
| Argument | Type | Description | Required |
|---|---|---|---|
eventName | String | Event type. One of add, update, remove or change. | Yes |
handler | Function | Event Handler, that will be called every time that event emits. | Yes |
Returns the cryptoStore. handler will get called with an updated doc. If the event is change, than the first argument is a eventName.
Rejects with:
| Name | Description |
|---|---|
| Error | ... |
Example
function changeHandler (eventName, doc) {
console.log(eventName, doc)
}
hoodie.cryptoStore.on('change', changeHandler)
.on('add', function (doc) { // .on returns the cryptoStore
console.log('a doc with ' + doc._id + 'was added')
})
cryptoStore.one(eventName, handler)
Add an one-time event-handler. It behaves like hoodie-store-client's one. But will not emit events for unencrypted documents or documents it couldn't decrypted. It will also decrypt the document.
| Argument | Type | Description | Required |
|---|---|---|---|
eventName | String | Event type. One of add, update, remove or change. | Yes |
handler | Function | Event Handler, that will be called one time that event emits. | Yes |
Returns the cryptoStore. handler will get called with an updated doc. If the event is change, than the first argument is a eventName. After that event get emitted, that handler will get removed.
Rejects with:
| Name | Description |
|---|---|
| Error | ... |
Example
function changeHandler (eventName, doc) {
console.log(eventName, doc)
}
hoodie.cryptoStore.one('change', changeHandler)
.one('add', function (doc) { // .on returns the cryptoStore
console.log('a doc with ' + doc._id + 'was added')
})
cryptoStore.off(eventName, handler)
Remove an event-handler. It behaves like hoodie-store-client's off.
| Argument | Type | Description | Required |
|---|---|---|---|
eventName | String | Event type. One of add, update, remove or change. | Yes |
handler | Function | Event Handler, that will be removed | Yes |
Returns the cryptoStore.
Rejects with:
| Name | Description |
|---|---|
| Error | ... |
Example
var changeHandler = function (eventName, doc) {
console.log(eventName, doc)
}
hoodie.cryptoStore.on('change', changeHandler)
hoodie.cryptoStore.off('change', changeHandler)
cryptoStore.withIdPrefix(prefix)
| Argument | Type | Description | Required |
|---|---|---|---|
prefix | String | Section that will be added before every id. | Yes |
Returns subset of cryptoStore API with _id property implicitly prefixed by passed string.
Rejects with:
| Name | Description |
|---|---|
| Error | ... |
Example
var userData = hoodie.cryptoStore.withIdPrefix('user/')
// Only emits changes for docs with a 'user/'-prefix.
userData.on('change', function (eventName, doc) {
console.log(eventName, doc)
})
userData.add({
_id: 'test-user', // will be saved as 'user/test-user'
name: 'Tester'
})
.then(function (doc) {
console.log(doc._id) // 'user/test-user'
return userData.find('test-user')
})
.then(function (doc) {
doc.isTester = true
userData.update(doc) // 'user/test-user' and 'test-user' work!
})
cryptoStore.withPassword(password, salt)
| Argument | Type | Description | Required |
|---|---|---|---|
password | String | A password for encrypting the objects | Yes |
salt | String | A second password part, to add another protection lair. If this is missing a salt will be generated. Which will result in a different encryption! | No |
Resolves with an object containing the used salt and a subset of cryptoStore API. This API will have the encryption key from password and salt. If no salt or a now correct one, got passed, a new salt will get created.
This also works if the main instance isn't unlocked!
{
"salt": "1234567890",
"store": {
"add": function () {},
"withPassword": function () {},
...
}
}
Rejects with:
| Name | Description |
|---|---|
| Error | ... |
Example
var result = hoodie.cryptoStore.withPassword('secretPassword')
.then(function (result) {
var store = result.store
var salt = result.salt
// Only emits changes for docs that are encrypted with this password and salt.
store.on('change', function (eventName, doc) {
console.log(eventName, doc)
})
store.add({foo: 'bar'})
// you must save the salt! Only with the same salt it is the same encryption!
hoodie.cryptoStore.findOrAdd({
_id: 'secondPasswordSalt',
salt: salt
})
})
| Event | Description | Arguments |
|---|---|---|
add | Is emitted every time a doc is added/created. | doc the added document. |
update | Is emitted every time a doc is updated/changed. | doc the changed document |
remove | Is emitted every time a doc is removed. | doc the removed document. |
change | Is emitted every time a doc is added, updated or removed. | event what did happen? (add, update or remove), doc the changed document. |
FAQs
End-to-end crypto plugin for the Hoodie client store.
We found that hoodie-plugin-store-crypto demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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