Welcome to Anastasis

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2021-10-28 06:00:07

A ‘keep-your-own-key’ crypto-custody solution with password-less key recovery via multi-factor multi-party authentication.

Anastasis is a key recovery system that allows the user to securely deposit shares of a core secret with an open set of escrow providers, to recover it if the secret is lost. The core secret itself is protected from the escrow providers by giving each provider only part of the information, and additionally by encrypting it with an identity-based key unknown to the providers. Anastasis is a GNU package.

Only the authorized user can recover the key by following standard authentication procedures (SMS-TAN, Video Identification, security question, e-mail, etc.)

Anastasis lets you save your secret on several escrow providers. You can choose different combinations of these providers to recover your secret. The various providers provide different authentication methods (like SMS, secure question or E-Mail) which the user has to supply to recover their secret.

Anastasis is based on well-known cryptographic techniques. Our resulting solution offers post-quantum security. A compromised database of an individual Anastasis service provider by itself never leaks information that would be by itself sufficient to recover any core secret of any user.

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