基本MD5操作(单步) A B D functiong g(b, c, d) X](+ I F(b, c, d )(bAc)v(bAd) 2G(b,c,d)(b∧d)v(c∧d) 3 H(b,c, d )bored 4I(b,c,d)c⊕(bvd) CLSS p2i=(1+5)mod16 (5+3)mod16 A B C D p2l=7i mod 16A B C D A B C D +++ CLSs + g X[k] T[i] 2 i = (1+5i) mod 16 3 i = (5+3i) mod 16 2 i = 7i mod 16 基本MD5操作 (单步 ) Function g g(b,c,d) 1 F(b,c,d) (b c) (b d) 2 G(b,c,d) (b d) (c d) 3 H(b,c,d) b c d 4 I(b,c,d) c (b d)