BPasswordPro

This APP is used to store you account and password to ethereum block chain , but before upload to block chain, we use your private key to encrypt it where is create at launch time.

Firstly, launch the app and create a block chain account with your password, this process will create a block chain public and private key locally, no one know this account's private key, and it will be encrypted by the password input and save the cipher text locally. No server will save you password and cipher text, so it's definitely safe.

Secondly, because of no server to save your private information, so please export your ciphered text as a QR code image to somewhere to backup your account. if you lose it or delete app without backup of this account, no one can find your account and password.It totally decentralized application, fully block chain ,completely safe, even you yourself can't steal this when you lost this ciphered text or forget the password to decrypt this ciphered text, so be careful about this QR code image. Also don't be worried too much about this QR code image, even someone steal this image, he can't decrypt you account expect he also get your password which is no place to be stored. The password only is stored in your brain, so don't forget password of this application.Do you known the story about someone lost his bitcoin account?

Thirdly, please apply the free BPTs and Diamonds of the trial version, the block chain will send some BPTs and Diamonds to use.The BPTs are used to by membership of this App.Before you create an Account-Password pair on block chain, you must recharge your membership firstly.It costs 2 BPTs per month, It authorize you to operate on block chain.But the operation on block chain is not free, then it require diamonds to reward the miner of block chain.So the Diamonds is used to reward them, and their duty is to make sure the block chain be safe and never lost data. It costs about 4 Diamonds per operation, but it is not constant value, it depends on the difficult of mining process and the price of gas used to operate block chain.

Fourthly, after save you saving Account-Password encrypted data to block chain , you can synchronize these data anytime and anywhere, even you can see them on some block chain explorer such as :etherscan.io but these data is encrypted by your private key.So before you look the Account-Password value, you should decrypt your block chain account and then the app can use you private key to decrypt the data. For the sake of safety, the private key must be remove from memory sometimes later, the default duration of private key opened is 5 minutes, you can change it in the setting tab page.