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Secure key-value store based on secure-container





Travis branch npm code style: standard

Secure key-value store built on secure-container.


npm install seco-keyval


import SecoKeyval from 'seco-keyval'

const kv = new SecoKeyval('db.seco', { appName: 'exodus', appVersion: '1.0.0' })
await'1-very-secure-password', { a: 1 })

await kv.set('key', 'myValue')

const value1 = kv.get('a')
console.log(value1) // -> 1

const value2 = kv.get('key')
console.log(value2) // -> 'myValue'


new SecoKeyval(file, header)

  • file (String) Filename
  • header (Object)
    • appName (String) App Name
    • appVersion (String) App Version[, initialData])

Loads the key-value store. Creates it if it doesn't exist.

  • passphrase (String | Buffer)
  • initialData (any JSON-serializable data) Will be written if the store doesn't exist.

Returns a Promise resolving when the filesystem operations are complete. You cannot call set() or get() until this is done.

kv.set(key, value)

Sets key to value. Returns a promise resolving when the data has been written to disk.


Gets key and returns the value of key. Returns undefined if the key is not set.


Deletes key. Returns a promise resolving when the data has been written to disk.


Accepts an Array of operations where each item is an Object, with the structure:

  • type The String "set" or "delete"
  • key Key to perform the operation on
  • value for set operation, the value to be set to key

Returns a promise resolving when the data has been written to disk.


Changes the passphrase to newPassphrase. Returns a promise resolving when the data has been written to disk.


Schedule for the passphrase to change to newPassphrase on the next file write. There is no guarantee that the passphrase will get changed when using this method (i.e. if set() is never called afterwards). Returns undefined.


Returns an object containing all the key-value pairs in the kv.


DANGER: Don't use this method unless you know what you're doing!

This completely replaces and overwrites the key-value store with data and writes the data to disk, with no backups of the old data.