Lines Matching refs:TWOFISH
473 /* now given a 20 byte key what keysize does Twofish want to use? */
479 printf("Twofish suggested a key size of %d\n", keysize);
603 \index{blowfish\_desc} \index{xtea\_desc} \index{rc2\_desc} \index{rc5\_desc} \index{rc6\_desc} \index{saferp\_desc} \index{aes\_desc} \index{twofish\_desc}
618 \hline Twofish & twofish\_desc & 16 & 16, 24, 32 & 16 \\
657 Note that \textit{Twofish} has additional configuration options (Figure \ref{fig:twofishopts}) that take place at build time. These options are found in
658 the file \textit{tomcrypt\_cfg.h}. The first option is \textit{TWOFISH\_SMALL} which when defined will force the Twofish code
659 to not pre-compute the Twofish \textit{$g(X)$} function as a set of four $8 \times 32$ s-boxes. This means that a scheduled
660 key will require less ram but the resulting cipher will be slower. The second option is \textit{TWOFISH\_TABLES} which when
661 defined will force the Twofish code to use pre-computed tables for the two s-boxes $q_0, q_1$ as well as the multiplication
663 speed increase is useful when \textit{TWOFISH\_SMALL} is defined since the s-boxes and MDS multiply form the heart of the
664 Twofish round function.
667 \index{Twofish build options} \index{TWOFISH\_SMALL} \index{TWOFISH\_TABLES}
671 \hline \textbf{TWOFISH\_SMALL} & \textbf{TWOFISH\_TABLES} & \textbf{Speed and Memory (per key)} \\
680 \caption{Twofish Build Options}
965 /* register twofish first */
975 find_cipher("twofish"), /* index of desired cipher */
2214 of the cipher\footnote{The cipher must have a 64 or 128 bit block size. Such as CAST5, Blowfish, DES, AES, Twofish, etc.} you
5289 \subsection{TWOFISH\_SMALL and TWOFISH\_TABLES}
5290 Twofish is a 128-bit symmetric block cipher that is provided within the library. The cipher itself is flexible enough
5291 to allow some trade-offs in the implementation. When TWOFISH\_SMALL is defined the scheduled symmetric key for Twofish
5293 defined will also greatly slow down the cipher. When this macro is not defined Twofish will pre-compute the
5296 When TWOFISH\_TABLES is defined the cipher will use pre-computed (and fixed in code) tables required to work. This is
5297 useful when TWOFISH\_SMALL is defined as the table values are computed on the fly. When this is defined the code size
5298 will increase by approximately 500 bytes. If this is defined but TWOFISH\_SMALL is not the cipher will still work but
