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otsmr
9faa4fc49a
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69 lines
1.9 KiB
Protocol Buffer
69 lines
1.9 KiB
Protocol Buffer
syntax = "proto3";
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package passwordless_recovery;
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// Recovery Process
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// - Generating: TempID and a new assymetric key pair
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// - Uploading to the server TempID + Push Tokens so the server can notify the user that someone helped him
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// Send from the person who tries to recover their account.
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// This can be done via a link, which will then be opend in the app of the contact.
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// The contact than has to manualy select from which user he got the request.
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// -> Using this phishing is harder, as the user has to manualy select the user to recovery
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// -> The user who wants to recover his account does not need to remember her old username
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message RecoveryRequest {
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string notification_id = 1;
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bytes public_key = 2;
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}
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// Used as envelope for TrustedFriendShare and RecoveryData
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message EncryptedEnvelope {
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bytes encrypted_data = 1;
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bytes iv = 2;
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bytes mac = 3;
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}
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// Send from the trusted friend to
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// This is encrypted with the received public key.
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message TrustedFriendShare {
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// This allows to display the user which user has send him his recovery data.
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User trusted_friend = 1;
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// This allows to display the userdata, showing that he is recovering the correct person.
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User share_user = 2;
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// The minimum threshold required to decrypte the shares.
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int32 threshold = 3;
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// The actual share which will become: SharedSecretData
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bytes shared_secret_data = 4;
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message User {
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int64 user_id = 1;
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string display_name = 2;
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bytes avatar = 3;
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}
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}
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// The user identity keys. Can be used to restore the data backup.
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message RecoveryData {
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int64 user_id = 1;
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bytes key_manager = 3;
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}
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// After received all shares this is decrypted by the user restoring its own
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message SharedSecretData {
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// The recovery data is encrypted in case a second factor was chosen.
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bytes recovery_data = 1;
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optional bytes encrypted_server_key_nonce = 3;
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optional bytes pin_seed = 4;
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optional bytes pin_unlock_token = 5;
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optional string email_hint = 6;
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}
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