A stream cipher is an encryption algorithm which encrypts arbitrary length plain text, using a (fixed length) key. Some stream ciphers generate a key stream from only the key, which is then XOR-combined with the plain text, others feed back plain text or cryptotext into the algorithm to create the ...
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fixing WEP by treating all messages as one long stream
in the course of introduction to cryptography on coursera
professor suggested treating all messages as a long stream XORing them with the key
this way we will not need to change the key and will not ...
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Attacks on a stream cipher
What attacks are there against stream ciphers?
I found 2:
Bit-flipping attack. Since every input bit mention exactly one output bit, it is possible to change ciphertext bits where the corresponding ...
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Why RC4 used constant 24bits for initial vector
Why RC4 used 24-bits constant value + 40 bits random values to generate key?
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1answer
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Super-symmetric Stream cipher [closed]
What I want to know is, Is there a stream cipher with two modes Mode-1 (encrypt/decrypt) and Mode-2 (decrypt/encrypt)
i.e. it should be possible to encrypt and decrypt using Mode-1 and Mode-2 ...
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Why is there a strong distinction between stream and block ciphers?
If I don't err, in the literature a stream cipher is one in which each plaintext bit is processed individually, commonly via xor-ing with one bit of a random or pseudo-random bit stream, while a block ...
