大家知道下面这段代码是什么算法吗?
06805700 /$ 53 push ebx
06805701 |. 55 push ebp
06805702 |. 8B6C24 0C mov ebp,dword ptr ss:[esp+C]
06805706 |. 56 push esi
06805707 |. 8BC5 mov eax,ebp
06805709 |. 8BCD mov ecx,ebp
0680570B |. C1E0 1F shl eax,1F
0680570E |. D1E9 shr ecx,1
06805710 |. 0BC1 or eax,ecx
06805712 |. 8B4C24 14 mov ecx,dword ptr ss:[esp+14]
06805716 |. 8BF0 mov esi,eax
06805718 |. 57 push edi
06805719 |. 8A11 mov dl,byte ptr ds:[ecx]
0680571B |. 8B3D 889A8506 mov edi,dword ptr ds:[6859A88]
06805721 |. 83E2 3F and edx,3F
06805724 |. 8BD8 mov ebx,eax
06805726 |. C1EE 1A shr esi,1A
06805729 |. 33D6 xor edx,esi
0680572B |. 41 inc ecx
0680572C |. C1EB 16 shr ebx,16
0680572F |. 8B3497 mov esi,dword ptr ds:[edi+edx*4]
06805732 |. 8A11 mov dl,byte ptr ds:[ecx]
06805734 |. 83E2 3F and edx,3F
06805737 |. 83E3 3F and ebx,3F
0680573A |. 33D3 xor edx,ebx
0680573C |. 8B9C97 00010000 mov ebx,dword ptr ds:[edi+edx*4+100]
06805743 |. 8A51 01 mov dl,byte ptr ds:[ecx+1]
06805746 |. 0BF3 or esi,ebx
06805748 |. 41 inc ecx
06805749 |. 8BD8 mov ebx,eax
0680574B |. 83E2 3F and edx,3F
0680574E |. C1EB 12 shr ebx,12
06805751 |. 83E3 3F and ebx,3F
06805754 |. 33D3 xor edx,ebx
06805756 |. 8B9C97 00020000 mov ebx,dword ptr ds:[edi+edx*4+200]
0680575D |. 8A51 01 mov dl,byte ptr ds:[ecx+1]
06805760 |. 0BF3 or esi,ebx
06805762 |. 41 inc ecx
06805763 |. 8BD8 mov ebx,eax
06805765 |. 83E2 3F and edx,3F
06805768 |. C1EB 0E shr ebx,0E
0680576B |. 83E3 3F and ebx,3F
0680576E |. 33D3 xor edx,ebx
06805770 |. 8B9C97 00030000 mov ebx,dword ptr ds:[edi+edx*4+300]
06805777 |. 8A51 01 mov dl,byte ptr ds:[ecx+1]
0680577A |. 0BF3 or esi,ebx
0680577C |. 41 inc ecx
0680577D |. 8BD8 mov ebx,eax
0680577F |. 83E2 3F and edx,3F
06805782 |. C1EB 0A shr ebx,0A
06805785 |. 83E3 3F and ebx,3F
06805788 |. 33D3 xor edx,ebx
0680578A |. 8B9C97 00040000 mov ebx,dword ptr ds:[edi+edx*4+400]
06805791 |. 8A51 01 mov dl,byte ptr ds:[ecx+1]
06805794 |. 0BF3 or esi,ebx
06805796 |. 41 inc ecx
06805797 |. 8BD8 mov ebx,eax
06805799 |. 83E2 3F and edx,3F
0680579C |. C1EB 06 shr ebx,6
0680579F |. 83E3 3F and ebx,3F
068057A2 |. 33D3 xor edx,ebx
068057A4 |. C1E8 02 shr eax,2
068057A7 |. 8B9C97 00050000 mov ebx,dword ptr ds:[edi+edx*4+500]
068057AE |. 8BD5 mov edx,ebp
068057B0 |. 0BF3 or esi,ebx
068057B2 |. 8A59 02 mov bl,byte ptr ds:[ecx+2]
068057B5 |. 41 inc ecx
068057B6 |. 83E2 1F and edx,1F
068057B9 |. D1E2 shl edx,1
068057BB |. 8A09 mov cl,byte ptr ds:[ecx]
068057BD |. 83E3 3F and ebx,3F
068057C0 |. C1ED 1F shr ebp,1F
068057C3 |. 0BD5 or edx,ebp
068057C5 |. 83E1 3F and ecx,3F
068057C8 |. 83E0 3F and eax,3F
068057CB |. 33D3 xor edx,ebx
068057CD |. 33C8 xor ecx,eax
068057CF |. 8B8497 00070000 mov eax,dword ptr ds:[edi+edx*4+700]
068057D6 |. 0B848F 00060000 or eax,dword ptr ds:[edi+ecx*4+600]
068057DD |. 0BC6 or eax,esi
068057DF |. 5F pop edi
068057E0 |. 5E pop esi
068057E1 |. 5D pop ebp
068057E2 |. 5B pop ebx
068057E3 \. C3 retn
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