Combining stream ciphers and block ciphers

Exploring Cipherspace: Combining stream ciphers and block ciphers

http://eprint.iacr.org/2008/473

This paper looks at the possibility of combining a block
cipher and a stream cipher to get a strong hybrid cipher. It
includes two specific proposals for combining AES-128 and
RC4-128 to get a cipher that takes a 256-bit key and is
significantly faster than AES-256, and arguably more secure.

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ちゃんと読んでないけど「ふーん」という感じ．
速度を優先して，強度を無視しているような希ガス．