Stream cipher attacks
Methods to break a stream cipher / From Wikipedia, the free encyclopedia
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Stream ciphers, where plaintext bits are combined with a cipher bit stream by an exclusive-or operation (xor), can be very secure if used properly[citation needed]. However, they are vulnerable to attacks if certain precautions are not followed:
- keys must never be used twice
- valid decryption should never be relied on to indicate authenticity
Methods to break a stream cipher