PB中调用WINAPI crypt32的示例，包含PB10\PB8-PB call WINAPI crypt32 example, contains PB10 \ PB8

六种加密算法源码，包括CRC32校验，DES加密，MD5，rsa数字签名，RSA演示，简单加密-Six encryption algorithm source code, including the CRC32 checksum, DES encryption, MD5, rsa digital signature, RSA presentation, simple encryption

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