EVP_PBE_CIPHERINIT - Online Linux Manual PageSection : 3ossl
Updated : 2022-03-15
Source : 3.0.2
Note : OpenSSL
NAMEEVP_PBE_CipherInit, EVP_PBE_CipherInit_ex, EVP_PBE_find, EVP_PBE_find_ex − Password based encryption routines
SYNOPSIS​ #include <openssl/evp.h> ​ ​ int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen, ​ ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de); ​ int EVP_PBE_CipherInit_ex(ASN1_OBJECT *pbe_obj, const char *pass, int passlen, ​ ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de, ​ OSSL_LIB_CTX *libctx, const char *propq); ​ ​ int EVP_PBE_find(int type, int pbe_nid, int *pcnid, int *pmnid, ​ EVP_PBE_KEYGEN **pkeygen); ​ int EVP_PBE_find_ex(int type, int pbe_nid, int *pcnid, int *pmnid, ​ EVP_PBE_KEYGEN **pkeygen, EVP_PBE_KEYGEN_EX **keygen_ex);
DESCRIPTION
PBE operations​EVP_PBE_CipherInit() and EVP_PBE_CipherInit_ex() initialise an EVP_CIPHER_CTX ​ctx for encryption (en_de=1) or decryption (en_de=0) using the password ​pass of length passlen. The PBE algorithm type and parameters are extracted from an OID pbe_obj and parameters param. ​EVP_PBE_CipherInit_ex() also allows the application to specify a library context ​libctx and property query propq to select appropriate algorithm implementations.
PBE algorithm search​EVP_PBE_find() and EVP_PBE_find_ex() search for a matching algorithm using two parameters: 1. An algorithm type type which can be: • ​EVP_PBE_TYPE_OUTER − A PBE algorithm • ​EVP_PBE_TYPE_PRF − A pseudo-random function • ​EVP_PBE_TYPE_KDF − A key derivation function 2. A pbe_nid which can represent the algorithm identifier with parameters e.g. ​NID_pbeWithSHA1AndRC2_CBC or an algorithm class e.g. NID_pbes2. They return the algorithm's cipher ID pcnid, digest ID pmnid and a key generation function for the algorithm pkeygen. EVP_PBE_CipherInit_ex() also returns an extended key generation function keygen_ex which takes a library context and property query. If a NULL is supplied for any of pcnid, pmnid, pkeygen or pkeygen_ex then this parameter is not returned.
NOTESThe arguments pbe_obj and param to EVP_PBE_CipherInit() and EVP_PBE_CipherInit_ex() together form an X509_ALGOR and can often be extracted directly from this structure.
RETURN VALUESReturn value is 1 for success and 0 if an error occurred.
SEE ALSO​PKCS5_PBE_keyivgen (3), ​PKCS12_PBE_keyivgen_ex (3), ​PKCS5_v2_PBE_keyivgen_ex (3), ​PKCS12_pbe_crypt_ex (3), ​PKCS12_create_ex (3)
HISTORY​EVP_PBE_CipherInit_ex() and EVP_PBE_find_ex() were added in OpenSSL 3.0.
COPYRIGHTCopyright 2021 The OpenSSL Project Authors. All Rights Reserved. Licensed under the Apache License 2.0 (the ‟License”). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>. 0
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