To encode a high quality 4MP image, XOR requires a 17,000,000 bit (non-reusable) key. Other top ciphers require a 64 or 128 bit (reusable) key. XOR requires extra bits to compensate for its inherent insecurity.

If your key management system is secure enough to exchange and store a key as big as the data to encrypt, why don't you the system to protect the plaintext instead of the key?

In reply to Re^3: Short & Sweet Encryption? by Anonymous Monk
in thread Short & Sweet Encryption? by inblosam

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