How yii implements data encryption and decryption

1. Encrypt the password and verify whether the password transmitted by the client is correct

1. Encrypt the password

$hash = Yii::$app->getSecurity()->generatePasswordHash($password);

2. Verify the password passed by the client to determine whether it is correct

//$password:客户端传递的明文密码,$hash:对密码进行加密后的哈希值 
if (Yii::$app->getSecurity()->validatePassword($password, $hash)) { 
  // 验证成功(密码正确) 
} else { 
  // 验证失败(密码错误) 
}

2. Generate a pseudo-random data

When we reset the password, we often send an email to In the user's mailbox, give him a reset password. At this time, we can use Yii's pseudo-random data method to generate a pseudo-random data as a password for the user

//默认生成32为随机字符,可以指定位数生成指定位数的伪随机数 
$key = Yii::$app->getSecurity()->generateRandomString();

3. Yii common data encryption and decryption

Common encryption methods in Yii include: encryptByPassword() and encryptByKey()

Common decryption methods in Yii include: decryptByPassword() and decryptByKey()

1. encryptByPassword() and decryptByPassword()

Encryption:

//$data:需要加密的信息,$secretKey:加密时使用的密钥(key) 
$encryptedData = Yii::$app->getSecurity()->encryptByPassword($data, $secretKey);

Decryption:

//$encryptedData:需要解密的信息,$secretKey:加密时使用的密钥(key) 
$data = Yii::$app->getSecurity()->decryptByPassword($encryptedData, $secretKey);

2. encryptByKey() and decryptByKey()

Encryption:

//$data:需要加密的信息,$secretKey:加密时使用的密钥(key) 
$encryptedData = Yii::$app->getSecurity()->encryptByPassword($data, $secretKey);

Decryption:

//$encryptedData:需要解密的信息,$secretKey:加密时使用的密钥(key) 
$data = Yii::$app->getSecurity()->decryptByKey($encryptedData, $secretKey);

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