Module phcrypto 

Pubhubs specific crypto

Functions

attr_id

Derives an Id for an Attr.

attr_signing_key

Computes the jwt::HS256 key used to sign Attr from the secret shared between the authentication server and pubhubs central.

auths_attr_keys

Derives attribute keys for a given attr::Attribute and a list of timestamps.

combine_master_enc_key_parts

Computes the x B from x_T * B and x_PHC, used by PHC to create the constellation

constellation_id

Derives an id::Id for a constellation::Inner.

jwt_id

Derives an id::Id for a jwt::JWT.

phc_user_object_hmac

Derives an hmac for a user object stored at pubhubs central.

pseud_factor_for_hub

Computes the pseudonymisation factor $g_H$ for the hub identified by hub_id, from the transcryptor’s pseud_factor_secret. See crate::api::sso for the exact formula.

sealing_secret

Computes the crypto::SealingKey used to seal messages between servers shared a secret.

t_encrypted_hub_pseudonym

Turns the given polymorphic pseudonym pp (which should be Id_U elgamal encrypted for x) into an encrypted hub pseudonym (which should be g_H Id_U elgamal encrypted for x_PHC).