Trong PHP, có thể sử dụng một chuỗi mã hóa và giải mã một chuỗi bằng cách sử dụng một trong các tiện ích mở rộng mật mã được gọi là hàm openSSL để mã hóa và giải mã. hàm openSSL_encrypt (): hàm openSSL_encrypt () được sử dụng để mã hóa dữ liệu. The openssl_encrypt() function is used to encrypt the data. Syntax: string openssl_encrypt( string $data, string $method, string $key,
$options = 0, string $iv, string $tag= NULL,
string $aad, int $tag_length = 16 )
Parameters:
Giá trị trả về: Nó trả về chuỗi được mã hóa thành công hoặc sai khi thất bại. It returns the encrypted string on success or FALSE on failure. hàm openSSL_decrypt () Hàm openSSL_decrypt () được sử dụng để giải mã dữ liệu. The openssl_decrypt() function is used to decrypt the data. Syntax: string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
Parameters:
$ tag_length: Nó giữ độ dài của thẻ xác thực. Độ dài của thẻ xác thực nằm trong khoảng từ 4 đến 16 cho chế độ GCM. It returns the decrypted string on success or FALSE on failure. Giá trị trả về: Nó trả về chuỗi được mã hóa thành công hoặc sai khi thất bại. First declare a string and store it into variable and use openssl_encrypt() function to encrypt the given string and use openssl_decrypt() function to descrypt the given string. hàm openSSL_decrypt () Hàm openSSL_decrypt () được sử dụng để giải mã dữ liệu. This example illustrates the encryption and decryption of string.
$ TAG: Nó giữ thẻ xác thực bằng chế độ mật mã AEAD (GCM hoặc CCM). Khi xác thực không thành công openSSL_decrypt () trả về sai. Giá trị trả về: Nó trả về chuỗi được giải mã thành công hoặc sai khi thất bại. Cách tiếp cận: Đầu tiên khai báo một chuỗi và lưu trữ nó vào biến và sử dụng hàm openSSL_encrypt () để mã hóa chuỗi đã cho và sử dụng hàm openSSL_decrypt () để giải thích chuỗi đã cho. Ví dụ 1: Ví dụ này minh họa mã hóa và giải mã chuỗi.
string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
1$simple_string;string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
4 = string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
6;string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
8 string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
9string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
4Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks1 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks8 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks8 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks5 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks2 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks5 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks4 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks1 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks2 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks3 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks4 = Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks6 ;Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks8 = Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks030
Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks2 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks5 string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
4= 5
Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks5 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks2 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks5 $simple_string2Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks1 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks2 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks3 $simple_stringOriginal String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks5____ string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
4Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks7
Output: Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks
Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks6 ;
Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks030
string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
1= 0;Ví dụ 1: Ví dụ này minh họa mã hóa và giải mã chuỗi.
string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
1$simple_string;string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
4 = string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
6;string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
8 string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
9string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
4Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks1
Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks8 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks5 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks2 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks5 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks4 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks1 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks2 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks3 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks4 = Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks6 ;Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks8 = Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks030 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks2 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks3 $simple_stringOriginal String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks5____ string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
4Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks7 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks8 $simple_string6Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks5 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks2 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks5 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks4 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks1 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks2 Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks3 $simple_stringOriginal String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks5____ string openssl_decrypt( string $data, string $method, string $key,
int $options = 0, string $iv, string $tag, string $aad)
4Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks7
Output: Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks References:
Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks6 ; |
