Clear DefinitionsEncrypted Backup
1 min read
Pronunciation
[en-kript-id bak-up]
Analogy
Like storing a safe’s combination in a locked safe.
Definition
A backup of wallet data (seed, keystore) encrypted with a passphrase to protect against unauthorized access.
Key Points Intro
Encrypted backups secure recovery via:
Key Points
Password protection: AES encryption of backup file.
Portability: Can store on cloud or external drive.
Integrity check: Includes MAC or checksum.
Standard formats: JSON keystore (Web3) or .wallet files.
Example
MetaMask exports an encrypted JSON keystore file secured by user password for later import.
Technical Deep Dive
Keystore uses PBKDF2 or scrypt to derive encryption key from password, AES-128-CTR to encrypt private key, and HMAC-SHA256 for MAC. JSON includes cipherparams and KDF params.
Security Warning
Weak passwords can be brute-forced; use strong passphrases and salt.
Caveat
Loss of password makes backup useless; store password separately.
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