Blowfish cipher, a symmetric block cipher, has an issue with weak keys that can lead to identical subkey generation. To mitigate this, it’s crucial to avoid using weak keys by implementing key-strengthening techniques. One such technique is the use of cryptographic salt, which adds randomness to the key and makes it more resistant to attacks. Another method involves key stretching, where the original key is used as a base to generate a longer key, increasing its complexity. Additionally, regular rotation of keys helps in reducing the risk associated with weak keys.
