Audiovox P965 Arkusz Danych Pobierz pdf (Strona 214)

API in C

211

SET(c, d, a, b, 14, 17, T15);

SET(b, c, d, a, 15, 22, T16);

#undef SET

/* Round 2. */

/* Let [abcd k s i] denote the operation

a = b + ((a + G(b,c,d) + X[k] + T[i]) <<< s). */

#define G(x, y, z) (((x) & (z)) | ((y) & ~(z)))

#define SET(a, b, c, d, k, s, Ti)\

t = a + G(b,c,d) + X[k] + Ti;\

a = ROTATE_LEFT(t, s) + b

/* Do the following 16 operations. */

SET(a, b, c, d, 1, 5, T17);

SET(d, a, b, c, 6, 9, T18);

SET(c, d, a, b, 11, 14, T19);

SET(b, c, d, a, 0, 20, T20);

SET(a, b, c, d, 5, 5, T21);

SET(d, a, b, c, 10, 9, T22);

SET(c, d, a, b, 15, 14, T23);

SET(b, c, d, a, 4, 20, T24);

SET(a, b, c, d, 9, 5, T25);

SET(d, a, b, c, 14, 9, T26);

SET(c, d, a, b, 3, 14, T27);

SET(b, c, d, a, 8, 20, T28);

SET(a, b, c, d, 13, 5, T29);

SET(d, a, b, c, 2, 9, T30);

SET(c, d, a, b, 7, 14, T31);

SET(b, c, d, a, 12, 20, T32);

#undef SET

/* Round 3. */

/* Let [abcd k s t] denote the operation

a = b + ((a + H(b,c,d) + X[k] + T[i]) <<< s). */

#define H(x, y, z) ((x) ^ (y) ^ (z))

#define SET(a, b, c, d, k, s, Ti)\

t = a + H(b,c,d) + X[k] + Ti;\

a = ROTATE_LEFT(t, s) + b

/* Do the following 16 operations. */

SET(a, b, c, d, 5, 4, T33);

SET(d, a, b, c, 8, 11, T34);

SET(c, d, a, b, 11, 16, T35);

SET(b, c, d, a, 14, 23, T36);

SET(a, b, c, d, 1, 4, T37);

SET(d, a, b, c, 4, 11, T38);

SET(c, d, a, b, 7, 16, T39);

SET(b, c, d, a, 10, 23, T40);

SET(a, b, c, d, 13, 4, T41);

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Audiovox P965 Arkusz Danych Strona 214

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