OpenSSL evp(3openssl)
NNNNAAAAMMMMEEEEevp - high-level cryptographic functions
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS#include
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNNThe EVP library provides a high-level interface to
cryptographic functions.EEEEVVVVPPPP_SSSSeeeeaaaallll... and EEEEVVVVPPPP_OOOOppppeeeennnn... provide public key encryption
and decryption to implement digital "envelopes".The EEEEVVVVPPPP_SSSSiiiiggggnnnn... and EEEEVVVVPPPP_VVVVeeeerrrriiiiffffyyyy... functions implement
digital signatures.Symmetric encryption is available with the EEEEVVVVPPPP_EEEEnnnnccccrrrryyyypppptttt...
functions. The EEEEVVVVPPPP_DDDDiiiiggggeeeesssstttt... functions provide message
digests.Algorithms are loaded with OpenSSL_add_all_algorithms(3).
All the symmetric algorithms (ciphers) and digests can be replaced by ENGINE modules providing alternative implementations. If ENGINE implementations of ciphers or digests are registered as defaults, then the various EVP functions will automatically use those implementations automatically in preference to built in software implementations. For more information, consult the engine(3) man page. SSSSEEEEEEEE AAAALLLLSSSSOOOOEVP_DigestInit(3), EVP_EncryptInit(3), EVP_OpenInit(3),
EVP_SealInit(3), EVP_SignInit(3), EVP_VerifyInit(3),
OpenSSL_add_all_algorithms(3), engine(3)
5/Aug/2002 Last change: 0.9.8o 1