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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Recently when I used a library ‘libcrypto.lib’ compiled from OpenSSL 1.1.0a in my project, some compiling errors led me to find that the header file 'evp.h' in OpenSSL 1.1.0a is incomplete. More specifically, definitions for many structures are strangely missing. For example, the definitions for structures EVP_ENCODE_CTX, EVP_CIPHER, EVP_CIPHER_CTX, EVP_MD, EVP_MD_CTX, and EVP_PKEY (maybe there are more) cannot be found in ‘evp.h’ or ‘ossl_typ.h’ or any other header files. While for OpenSSL 1.0.X, we can find definitions for these structures in ‘evp.h’ or other header files.<o:p></o:p></p></div></body></html>