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# lr_decrypt_ex

Decrypts a string encrypted by lr_encrypt_ex.

## C Language

    char* lr_decrypt_ex(const char* ciphertext);

## Java

    String lr.decrypt_ex( String ciphertext);

## Arguments

Name | Comments
--- | ---
ciphertext | The encrypted string to decrypt.

The lr_decrypt_ex function is used to decrypt messages encrypted by lr_encrypt_ex.

The AES key must be set before this function can be used. For details, see Add an AES key in the Help Center.

Tip: You can add an lr_decrypt_ex function call by right-clicking a string you want to encode in the script and selecting Encrypt String (Stronger Encryption). The string is encrypted and inserted as an argument of lr_decrypt_ex.

## Return Values

This function returns the decrypted string.

## Parameterization

The argument ciphertext can be parameterized.

## Examples

C

Copy code

    Action()
    {
        char* ciphertext;
        char* plaintext;

        ciphertext = lr_encrypt_ex("hello world!");
        plaintext = lr_decrypt_ex(ciphertext);

        lr_output_message("ciphertext is %s", ciphertext);
        lr_output_message("plaintext is %s", plaintext);

        return 0;
    }

Java

Copy code

    import lrapi.lr;

    public class Actions
    {

        public int init() throws Throwable {
            return 0;
        }//end of init

        public int action() throws Throwable {
            String ciphertext = "Hello World!";
            String encrypted = lr.encrypt_ex(ciphertext);
            String decrypted = lr.decrypt_ex(encrypted);
            lr.output_message(decrypted);
            return 0;
        }//end of action

        public int end() throws Throwable {
            return 0;
        }//end of end

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