JavaScript Decryption Function with UTF-8 Encoding

JavaScript Decryption Function with UTF-8 Encoding

The provided decryption function decryptedString(key, s) takes a key and an encrypted string as input and returns the decrypted string. However, it doesn't explicitly specify the encoding of the output.

To convert the decrypted result to a UTF-8 encoded string, you can use the following JavaScript code after the function returns the result:

result = decodeURIComponent(escape(result));

This code uses escape() to encode the decrypted string as a URL-encoded string and then decodeURIComponent() to decode the encoded string with UTF-8 encoding. This will ensure that the final output is a UTF-8 encoded string.

Example:

// Decrypt the string using the provided function
var decryptedResult = decryptedString(key, encryptedString);

// Convert the decrypted result to UTF-8 encoding
decryptedResult = decodeURIComponent(escape(decryptedResult));

// Now, decryptedResult contains the decrypted string in UTF-8 encoding.

By adding this line of code, you can ensure that the output of the decryption function is correctly encoded in UTF-8, allowing for proper handling and display of characters in various scenarios.