Merge pull request #5 from phpseclib/master

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[Triple]DES, Rijndael: Fix overflow in OFB mode

Related to: https://github.com/phpseclib/phpseclib/issues/77
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Merge pull request #9 from phpseclib/master

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Merge pull request #10 from phpseclib/master

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Merge pull request #11 from phpseclib/master

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DES / 3DES Performance Update

DES / 3DES Performance Update.
Inline en/decrypting gives additional ~25% performance.
100% compatible with the current DES/TribleDES.php
Strong testet on Windows/Linux 32/64bit with php4/5.0/5.1//5.2/5.3/5.4
Merge pull request #94 from petrich/DES-3DES-Performance-Update

DES/3DES performance update