| 摘要 |
FIELD: electricity. ^ SUBSTANCE: method of unit coding of a message M represented in a binary form includes the following sequence of actions: generation of a secret key in the form of a set of subkeys K, Q1, Q2,ÇQu. R1, R2Ç,Rh, where hëÑ1, breakdown of the message into subunits M1 M2,Ç,MU; Mu+1, Mu+2,Ç,M2u;Ç; Miu+1 Miu+2,Ç,M(i+1)u;Ç; M(w.1)u+1,Ç, Mwu, where i=1, 2,Ç, w, uëÑ1 and wëÑ1, formation of data units Bi, where i=1, 2,Ç, w, by generation of additional messages T(1), T(2),Ç, T(h) , breakdown of messages T(j) where j=1, 2,Ç, h, into subunits T1Çè(i) T2Çè(j)ÇTwÇè(j), coding of subunits M(i-1)u+1 M(i-1)u+2,Ç MjU depending on subkeys Q1 Q2,Ç, QU, coding of subunits TiÇè(1), TiÇè(2),Ç, TiÇè(h) depending on subkeys R1 R2,Ç,Rh and combination of transformed subunits M(i-1)u+1 M(i-1)u+2,Ç, Miu, TiÇè(1), TiÇè(2),Ç, TjÇè(h), and coding of data units Bi depending on a subkey K. ^ EFFECT: increased information capacitance of a cryptogram without reduction in its resistance level. ^ 3 cl, 1 ex |
