The eSignus Backup Center stores
- The second part of the seed, its name is Recover Key.
- The portfolio structure backup.
- The passphrase.
all encrypted previously with an AES key generated internally in the HASHWallet Link card. This means that eSignus have no access to any information stored in the eSignus Backup Center. The data only is useful when it is inside the correct card. The Backup Center is Zero Knowledge.
For more information please review eSignus Backup Center