| 60 | |
| 61 | |
| 62 | void CryptData::EncryptBlock20(byte *Buf) |
| 63 | { |
| 64 | uint A,B,C,D,T,TA,TB; |
| 65 | A=RawGet4(Buf+0)^Key20[0]; |
| 66 | B=RawGet4(Buf+4)^Key20[1]; |
| 67 | C=RawGet4(Buf+8)^Key20[2]; |
| 68 | D=RawGet4(Buf+12)^Key20[3]; |
| 69 | for(int I=0;I<NROUNDS;I++) |
| 70 | { |
| 71 | T=((C+rotls(D,11,32))^Key20[I&3]); |
| 72 | TA=A^substLong(T); |
| 73 | T=((D^rotls(C,17,32))+Key20[I&3]); |
| 74 | TB=B^substLong(T); |
| 75 | A=C; |
| 76 | B=D; |
| 77 | C=TA; |
| 78 | D=TB; |
| 79 | } |
| 80 | RawPut4(C^Key20[0],Buf+0); |
| 81 | RawPut4(D^Key20[1],Buf+4); |
| 82 | RawPut4(A^Key20[2],Buf+8); |
| 83 | RawPut4(B^Key20[3],Buf+12); |
| 84 | UpdKeys20(Buf); |
| 85 | } |
| 86 | |
| 87 | |
| 88 | void CryptData::DecryptBlock20(byte *Buf) |