# Improving Registration Lock with Secure Value Recovery

DevFeed: [Improving Registration Lock with Secure Value Recovery](<https://devfeed.tech/articles/improving-registration-lock-with-secure-value-recovery-1779.md>)

Original publisher: [Read original article](<https://signal.org/blog/improving-registration-lock/>)

Published: 2020-01-27T00:00:00Z

Content type: release

Language: en

Sources: [Signal Blog](<https://devfeed.tech/sources/signal-blog.md>)

Topics: [Security](<https://devfeed.tech/topics/security.md>), [passwords](<https://devfeed.tech/topics/passwords.md>), [Access Control](<https://devfeed.tech/topics/access-control.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>)

Tags: [access-control](<https://devfeed.tech/tags/access-control.md>), [code](<https://devfeed.tech/tags/code.md>), [hashing](<https://devfeed.tech/tags/hashing.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [passwords](<https://devfeed.tech/tags/passwords.md>), [release](<https://devfeed.tech/tags/release.md>), [security](<https://devfeed.tech/tags/security.md>)

## AI overview

Signal's beta release changes Registration Lock PIN protection by transitioning it to Secure Value Recovery. The change derives a random 256-bit value for access control, reducing the risk of offline brute-force attacks against stored PIN data while preserving PIN usability.

## Source excerpt

Registration Lock allows you to set a PIN that is required for account registration in addition to standard SMS-based verification. Today's Signal beta release enhances the security of these PINs by transitioning them to use Secure Value Recovery. Read more...