Source

Encryption model & independent audits — found from sitemap — Bitwarden

Checked for Bitwarden on 13 Oct 2026

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Local encryption Report an error

“Bitwarden always encrypts and/or hashes your data on your local device before anything is sent to cloud servers for storage. Bitwarden servers are only used for storing encrypted data.”
Zero knowledge Report an error

“Bitwarden is a zero knowledge encryption solution, meaning you are the only party with access to the keys required to decrypt the vault data.”
Symmetric encryption Report an error

“Bitwarden uses Advanced Encryption Standard in cipher block-chaining mode (AES-CBC), with 256 bit keys.”
Hmac Report an error

“In order to enforce integrity and authentication with AES, Bitwarden also uses Hash-based Message Authentication Code (HMAC) with SHA-256.”
Public key cryptography Report an error

“Bitwarden uses the RSA cryptosystem with Optimal Asymmetric Encryption Padding (OAEP) scheme.”
Post quantum Report an error

“Bitwarden is currently investigating post-quantum cryptography options.”