What kind of key pair SEBAK in use?
BOScoin mainnet, a.k.a SEBAK, use key pair from stellar key pair library.
Public key make sure that every transaction is secure. The public key is always safe & can be shared with other people neccessary to get your account information and verify that you have authority about transactions. But Secret seed, however, is private information that proves you own your account. So users have to be care to keep his secret seed in safe. If not, He has possibility to lose all of his digital assets.