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Comprehensive list of PHP encryption and decryption functions: safe application methods of md5, sha1, base64_encode and other functions require specific code examples
In the development of network applications, data Encryption and decryption are very important. As a popular server-side scripting language, PHP provides a variety of encryption and decryption functions. This article will introduce commonly used functions and their secure application methods, and provide specific code examples.
Secure application method:
Encrypted storage of passwords
$password = "123456"; $hashed_password = md5($password);
When the user registers or changes the password, use the md5 function to The password is encrypted and the encrypted password is stored in the database.
Secure application method:
Encrypted storage of passwords
$password = "123456"; $hashed_password = sha1($password);
Similar to the md5 function, use the sha1 function to encrypt the password , and store the encrypted password in the database.
Secure application method:
Used to encrypt URL parameters
$data = "example"; $encrypted_data = base64_encode($data); // 传递加密后的参数 echo "https://example.com/?data=" . urlencode($encrypted_data); // 接收URL参数并解密 $encrypted_data = urldecode($_GET['data']); $data = base64_decode($encrypted_data); echo $data;
When passing sensitive data, you can first use the base64_encode function to encode the data Encode and pass the encoded parameters. The receiver decodes the parameters through the base64_decode function and obtains the original data.
$data = "example"; $key = "mykey"; $encrypted_data = openssl_encrypt($data, "AES-128-ECB", $key); $decrypted_data = openssl_decrypt($encrypted_data, "AES-128-ECB", $key); echo $decrypted_data;In symmetric encryption, the same key is used for encryption and decryption . In the above example, the openssl_encrypt function is used to encrypt $data, and then the openssl_decrypt function is used to decrypt it and restore it to the original data.
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