MirBSD manpage: evp(3)
EVP(3) OpenSSL EVP(3)
evp - high-level cryptographic functions
#include <openssl/evp.h>
The EVP library provides a high-level interface to crypto-
graphic functions.
EVP_Seal... and EVP_Open... provide public key encryption
and decryption to implement digital "envelopes".
The EVP_Sign... and EVP_Verify... functions implement digi-
tal signatures.
Symmetric encryption is available with the EVP_Encrypt...
functions. The EVP_Digest... functions provide message dig-
ests.
Algorithms are loaded with OpenSSL_add_all_algorithms(3).
All the symmetric algorithms (ciphers) and digests can be
replaced by ENGINE modules providing alternative implementa-
tions. 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.
EVP_DigestInit(3), EVP_EncryptInit(3), EVP_OpenInit(3),
EVP_SealInit(3), EVP_SignInit(3), EVP_VerifyInit(3),
OpenSSL_add_all_algorithms(3), engine(3)
MirBSD #10-current 2005-02-05 1