利用vc的开发环境，使用openssl协议提供的库实现了消息摘要的生成和验证-Vc development environment by using the openssl library implements protocol provides message digest generation and verification

EVP_MD_CTX_init EVP_DigestInit_ex EVP_DigestUpdate EVP_DigestFinal_ex EVP_MD_CTX_cleanup openssl-摘要算法-openssl-digest ECP _ MD _ CTX _ init _ digestinit _ ECP前 _ digestupdate ECP _ digestfinal _ ECP前 E

使用openssl库进行用evp形式进行摘要-Use openssl library digest form with evp