How to Decrypt AES Data in ECB Mode Using Go?

Decrypting AES Data in ECB Mode Using Go

In response to the query about decrypting data using AES-ECB in Go, the following solution can be employed:

Electronic codebook (ECB) mode is a fundamental加密方法 that divides data into blocks of a specified size (e.g., AES-128 uses 16-byte blocks). Each block is then encrypted independently using the AES algorithm, resulting in the encrypted block.

To decrypt data encrypted using AES-128 ECB, follow these steps:

1. Import necessary module:

   <code class="go">import (
    "crypto/aes"
   )</code>

2. Create a new cipher:

   <code class="go">cipher, _ := aes.NewCipher([]byte(key))</code>

   Replace key with the encryption key used to encrypt the data.

3. Create an empty buffer to store the decrypted data:

   <code class="go">decrypted := make([]byte, len(data))</code>

   data represents the encrypted data.

4. Define the block size:

   <code class="go">size := 16 // block size for AES-128</code>

5. Decrypt each block:

   <code class="go">for bs, be := 0, size; bs < len(data); bs, be = bs+size, be+size {
    cipher.Decrypt(decrypted[bs:be], data[bs:be])
   }</code>

   This loop decrypts each block and stores the result in the decrypted buffer.

6. Return the decrypted data:

   <code class="go">return decrypted</code>

Remember that ECB mode has known security vulnerabilities, as identical blocks will always result in the same encrypted blocks. Consider other modes of operation, such as CBC or GCM, for more secure encryption with AES.

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