from small one page howto to huge articles all in one place
poll results
Last additions:
May 25th. 2007:
April, 26th. 2006:
| You are here: manpages
evp
Section: OpenSSL (3)
Updated: 2006-07-08
Index
Return to Main Contents
NAME
evp - high-level cryptographic functions
SYNOPSIS
#include <openssl/evp.h>
DESCRIPTION
The EVP library provides a high-level interface to cryptographic
functions.
EVP_Seal... and EVP_Open... provide public key encryption
and decryption to implement digital ``envelopes''.
The EVP_Sign... and EVP_Verify... functions implement
digital signatures.
Symmetric encryption is available with the EVP_Encrypt...
functions. The EVP_Digest... functions provide message digests.
The EVP_PKEY... functions provide a high level interface to
asymmetric algorithms.
Algorithms are loaded with OpenSSL_add_all_algorithms(3).
All the symmetric algorithms (ciphers), digests and asymmetric algorithms
(public key algorithms) 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.
Although low level algorithm specific functions exist for many algorithms
their use is discouraged. They cannot be used with an ENGINE and ENGINE
versions of new algorithms cannot be accessed using the low level functions.
Also makes code harder to adapt to new algorithms and some options are not
cleanly supported at the low level and some operations are more efficient
using the high level interface.
SEE ALSO
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)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
Please read "Why adblockers are bad".
|
Other free services .
.
| 
|
|
- Running on 
-
:
: 