What is the php encryption and decryption method?

How to implement php encryption and decryption: 1. You can use the "openssl_encrypt" method to implement encryption; 2. Use the "openssl_decrypt" method to implement decryption.

The operating environment of this article: Windows7 system, PHP7.1 version, DELL G3 computer

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php encryption and decryption What is the method?

php implements AES encryption and decryption

In php we use openssl_encrypt to implement encryption and openssl_decrypt to implement decryption

1: openssl_encrypt Detailed explanation of the method:

openssl_encrypt($data, $method, $key, $options = 0, $iv = "", &$tag = NULL, $aad = "", $tag_length = 16)

Parameters:

1.$data: Encrypted plain text

2.$method: Encryption method: What encryption methods can be obtained through openssl_get_cipher_methods()

3.$passwd: Encryption key [password]

4.$options: Data format options (optional) [options are:]: 0, OPENSSL_RAW_DATA=1, OPENSSL_ZERO_PADDING=2, OPENSSL_NO_PADDING=3

5.$iv: secret initialization vector (optional), please note: if the method is DES−ECB, iv does not need to be filled in

6.$tag: use AEAD password The authentication tag referenced when passing the mode (GCM or CCM) (optional)

7.$aad: Additional authentication data. (Optional)

8.$tag_length: Verify the length of the tag. In GCM mode, its range is 4 to 16 (optional)

2: Detailed explanation of openssl_decrypt method

openssl_decrypt($data, $method, $password, $options = 1, $iv = "", $tag = "", $aad = "")

Parameters:

1.$data: encryption to be decrypted information.

2.$method: Decryption method: What decryption methods can be obtained through openssl_get_cipher_methods()

3.$passwd: Decryption key [password]

4.$ options: Data format options (optional) [options are:]: 0, OPENSSL_RAW_DATA=1, OPENSSL_ZERO_PADDING=2, OPENSSL_NO_PADDING=3

5.$iv: secret initialization vector (optional), please note: If the method is DES−ECB, iv does not need to be filled in

6.$tag: Authentication tag in AEAD password mode (optional)

7.$aad: Additional authentication data. (Optional)

Three: Implement AES encryption and decryption

1: AES encryption

// 要加密的字符串 $data = 'test'; // 密钥 $key = '123456'; // 加密数据 'AES-128-ECB' 可以通过openssl_get_cipher_methods()获取 $encrypt = openssl_encrypt($data, 'AES-128-ECB', $key, 0); echo (($encrypt));

2: AES decryption

//解密字符串 $encrypt = '***'; //密钥 $key = '123456'; // 解密数据 $decrypt = openssl_decrypt($encrypt, 'AES-128-ECB', $key, 0); echo $decrypt;

This can be achieved according to the above AES encryption and decryption function

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