|CRYPTO(3)||Library Functions Manual||CRYPTO(3)|
Symmetric ciphers including AES, Blowfish, CAST, Chacha20, IDEA, DES, RC2, and RC4 are provided by the generic interface EVP_EncryptInit(3). Low-level stand-alone interfaces include BF_set_key(3), DES_set_key(3), and RC4(3).
Auxiliary features include:
Some of the newer functions follow a naming convention using the numbers ‘0’ and ‘1’. For example consider the names of these functions:
*crl, X509_REVOKED *rev);
*x, ASN1_OBJECT *obj);
The ‘0’ 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 crl would be freed but rev would not.
The ‘1’ function uses a copy of the supplied structure pointer (or in some cases increases its link count) in the parent and so both (x and obj above) should be freed up.
|June 6, 2019||OpenBSD-current|