How to decrypt a code online?

Answered by Ricardo McCardle

To decrypt a code online, you can use various tools and algorithms available on the internet. One commonly used algorithm for decryption is the Advanced Encryption Standard (AES). AES is a symmetric encryption algorithm that uses a secret key to encrypt and decrypt data.

Here is a step-by-step guide on how to decrypt a code using AES online:

1. Choose the Cipher Mode of Decryption:
– ECB (Electronic Codebook): Each block of data is encrypted independently. This mode does not require an Initialization Vector (IV).
– CBC (Cipher Block Chaining): Each block of data is XORed with the previous ciphertext block before encryption. This mode requires an IV for the first block.

2. Enter the IV Used During Encryption (Optional):
– If you chose the CBC mode, you need to enter the IV that was used during encryption. The IV should be a random and unique value for each encryption.

3. Select the Key Size in Bits:
– AES supports three key sizes: 128 bits, 192 bits, and 256 bits. Choose the key size that matches the key used for encryption.

4. Enter the Secret Key Used for Encryption:
– Input the secret key that was used to encrypt the code. The key should be a string of characters or a hexadecimal value, depending on the tool you are using.

5. AES Decrypted Output (Base64):
– The online tool will then use the selected cipher mode, IV (if applicable), key size, and secret key to decrypt the code. The decrypted output will be presented as Base64, which is a commonly used format for encoding binary data.

It’s important to note that decrypting a code online requires caution, as you may be exposing sensitive information to third-party tools or services. Ensure that you are using a reliable and trustworthy online decryption tool, especially when dealing with confidential data.

Remember, online decryption tools are convenient, but it’s always a good practice to understand the underlying encryption algorithms and implement them securely on your own systems when dealing with sensitive information.

Decrypting a code online using AES involves selecting the cipher mode, providing the IV (if applicable), key size, and secret key used for encryption. The online tool will then process the decryption and provide the output in Base64 format.