Ask about these "unresolved external symbol" error

I use visual C++ 6.0 to compile my program . When I compile there are these error message. If you know how to solve this error,please tell me. Thank you.


--------------------Configuration: Sticker - Win32 Debug--------------------
Compiling...
StickerDoc.cpp
Linking...
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptAddRandom@8
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptInit@0
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptEnd@0
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptGetRandom@8
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptQueryRSA@8
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptDestroyContext@4
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptGenerateKeyEx@8
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptCreateContext@12
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptDecrypt@12
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptLoadIV@12
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptDeriveKey@12
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptQueryContext@8
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptRetrieveIV@8
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptEncrypt@12
Crypt.obj : error LNK2001: unresolved external symbol __imp__cryptLoadKey@12
Debug/Sticker.exe : fatal error LNK1120: 15 unresolved externals
Error executing link.exe.

Sticker.exe - 16 error(s), 0 warning(s)

Obviously some functions are missing when the compiler is trying to link the program. It could be an object file or a library which is missing. I could guess that it has something to do with RSA encryption.