Manual Pages for UNIX Operating System command usage for man crypto

OpenSSL                                          crypto(3openssl)



NNNNAAAAMMMMEEEE
     crypto - OpenSSL cryptographic library

SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
     The OpenSSL ccccrrrryyyyppppttttoooo library implements a wide range of
     cryptographic algorithms used in various Internet standards.
     The services provided by this library are used by the
     OpenSSL implementations of SSL, TLS and S/MIME, and they
     have also been used to implement SSH, OpenPGP, and other
     cryptographic standards.

OOOOVVVVEEEERRRRVVVVIIIIEEEEWWWW
     lllliiiibbbbccccrrrryyyyppppttttoooo consists of a number of sub-libraries that
     implement the individual algorithms.

     The functionality includes symmetric encryption, public key
     cryptography and key agreement, certificate handling,
     cryptographic hash functions and a cryptographic pseudo-
     random number generator.

     SYMMETRIC CIPHERS
         blowfish(3), cast(3), des(3), idea(3), rc2(3), rc4(3),
         rc5(3)

     PUBLIC KEY CRYPTOGRAPHY AND KEY AGREEMENT
         dsa(3), dh(3), rsa(3)

     CERTIFICATES
         x509(3), x509v3(3)

     AUTHENTICATION CODES, HASH FUNCTIONS
         hmac(3), md2(3), md4(3), md5(3), mdc2(3), ripemd(3),
         sha(3)

     AUXILIARY FUNCTIONS
         err(3), threads(3), rand(3), OPENSSL_VERSION_NUMBER(3)

     INPUT/OUTPUT, DATA ENCODING
         asn1(3), bio(3), evp(3), pem(3), pkcs7(3), pkcs12(3)

     INTERNAL FUNCTIONS
         bn(3), buffer(3), lhash(3), objects(3), stack(3),
         txt_db(3)

NNNNOOOOTTTTEEEESSSS
     Some of the newer functions follow a naming convention using
     the numbers 0000 and 1111. For example the functions:

      int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev);
      int X509_add1_trust_object(X509 *x, ASN1_OBJECT *obj);




6/Oct/2002             Last change: 0.9.8o                      1






OpenSSL                                          crypto(3openssl)



     The 0000 version uses the supplied structure pointer directly
     in the parent and it will be freed up when the parent is
     freed.  In the above example ccccrrrrllll would be freed but rrrreeeevvvv
     would not.

     The 1111 function uses a copy of the supplied structure pointer
     (or in some cases increases its link count) in the parent
     and so both (xxxx and oooobbbbjjjj above) should be freed up.

SSSSEEEEEEEE AAAALLLLSSSSOOOO
     openssl(1), ssl(3)












































6/Oct/2002             Last change: 0.9.8o                      2