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Symmetric encryption and decryption

YT_GraphiX answered on December 26, 2022 Popularity 9/10 Helpfulness 1/10

answer Symmetric encryption and decryption

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Symmetric encryption and decryption

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# Simple XOR-based symmetric encryption and decryption

def simple_xor_encrypt_decrypt(input_bytes, key):
    encrypted = []
    for byte in input_bytes:
        encrypted_byte = byte ^ key
        encrypted.append(encrypted_byte)
    return bytes(encrypted)

if __name__ == '__main__':
    message = "This is a secret message."
    key = 42  # Replace this with your own secret key (an integer)

    # Encrypt the message
    encrypted_message = simple_xor_encrypt_decrypt(message.encode(), key)
    print("Encrypted message:", encrypted_message)

    # Decrypt the message
    decrypted_message = simple_xor_encrypt_decrypt(encrypted_message, key)
    print("Decrypted message:", decrypted_message.decode())

Popularity 9/10 Helpfulness 1/10 Language python

Source: chat.openai.com

Tags: encryption python symmetric

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Contributed on Oct 29 2023

YT_GraphiX

0 Answers Avg Quality 2/10

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<?php
  
// Store a string into the variable which
// need to be Encrypted
$simple_string = "Welcome to GeeksforGeeks";
  
// Display the original string
echo "Original String: " . $simple_string . "\n";
  
// Store cipher method
$ciphering = "BF-CBC";
  
// Use OpenSSl encryption method
$iv_length = openssl_cipher_iv_length($ciphering);
$options = 0;
  
// Use random_bytes() function which gives
// randomly 16 digit values
$encryption_iv = random_bytes($iv_length);
  
// Alternatively, we can use any 16 digit
// characters or numeric for iv
$encryption_key = openssl_digest(php_uname(), 'MD5', TRUE);
  
// Encryption of string process starts
$encryption = openssl_encrypt($simple_string, $ciphering,
        $encryption_key, $options, $encryption_iv);
  
// Display the encrypted string
echo "Encrypted String: " . $encryption . "\n";
  
// Decryption of string process starts
// Used random_bytes() which gives randomly
// 16 digit values
$decryption_iv = random_bytes($iv_length);
  
// Store the decryption key
$decryption_key = openssl_digest(php_uname(), 'MD5', TRUE);
  
// Descrypt the string
$decryption = openssl_decrypt ($encryption, $ciphering,
            $decryption_key, $options, $encryption_iv);
  
// Display the decrypted string
echo "Decrypted String: " . $decryption;
  
?>

Popularity 10/10 Helpfulness 1/10 Language whatever

Source: www.geeksforgeeks.org

Tags: encryption e

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Contributed on Dec 26 2022

Pacome Gueu

0 Answers Avg Quality 2/10

Symmetric encryption and decryption

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