Ask about these "unresolved external symbol" error

This is a discussion on Ask about these "unresolved external symbol" error within the C++ Programming forums, part of the General Programming Boards category; I use visual C++ 6.0 to compile my program . When I compile there are these error message. If you ...

  1. #1
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    Lightbulb 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)

  2. #2
    Registered User raimo's Avatar
    Join Date
    Jun 2002
    Posts
    107
    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.

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