The process of generating private key by bitcoin wallet includes the following steps:

First, you need to choose a credible bitcoin wallet software. There are many different types of wallet software to choose from, such as desktop wallet, mobile wallet, hardware wallet and so on. You can search online, consult other bitcoin users or read articles about bitcoin wallet evaluation to choose a wallet software that suits you.

Next, you need to start your wallet software and create a new bitcoin wallet. Once you create a new wallet, the software will generate a public key and a private key pair.

In the bitcoin network, each user has a public key and private key pair associated with it. The public key is like a bank account, which can be publicly displayed to others to receive bitcoin payments. The private key is a secret code that only you know, and it can be used to sign the bitcoin, thus proving that you are the owner of the bitcoin address.

Wallet software uses a random number generator to generate the private key. This random number generator is provided by wallet software to ensure that the private key is randomly generated, safe and unpredictable.

The private key consists of a series of random numbers and letters. In wallet software, it is usually stored in a format called WIF(WalletImportFormat). WIF format contains a version byte, a compression flag, a 32-byte private key and a checksum. Storing the private key in WIF format can ensure easy backup and import into other wallet software.

After the private key is generated, it should be backed up to a safe place, such as paper backup or hardware wallet backup. In this way, even if your computer or mobile device is stolen or damaged, you can get your bitcoin wallet back and access your private key. Remember not to disclose the private key to others, because this may lead to your bitcoin being stolen.