The use of Visual C++. Net2003 developed a document for the protection of small procedures. MD5 value of the document produced at the same time the source file using DES encryption, and signature private key encryption. Encrypted files decryption, authentication using public key to decrypt the signature and decrypt files MD5 value to determine whether a document is modified. Problems encountered: Microsoft to provide the signature function may be a problem regardless of whether it uses a public key or private key signature, using public key, private key (any one) can be decrypted. Strange! Would like to exchange with the U.S. exchanges.

Packet : 47651500cryptoapi_protectfile.zip filelist
CryptoAPI使用---文件保护程序/
CryptoAPI使用---文件保护程序/b.txt
CryptoAPI使用---文件保护程序/CryptoAPI_CryptFile.cpp
CryptoAPI使用---文件保护程序/CryptoAPI_CryptFile.sln
CryptoAPI使用---文件保护程序/CryptoAPI_CryptFile.suo
CryptoAPI使用---文件保护程序/CryptoAPI_CryptFile.vcproj
CryptoAPI使用---文件保护程序/ReadMe.txt
CryptoAPI使用---文件保护程序/Release/
CryptoAPI使用---文件保护程序/RSA_5090218.private
CryptoAPI使用---文件保护程序/RSA_5090218.public
CryptoAPI使用---文件保护程序/stdafx.cpp
CryptoAPI使用---文件保护程序/stdafx.h

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