+++ /dev/null
-=pod
-
-=head1 NAME
-
-X509_LOOKUP_hash_dir, X509_LOOKUP_file,
-X509_load_cert_file,
-X509_load_crl_file,
-X509_load_cert_crl_file - Default OpenSSL certificate
-lookup methods
-
-=head1 SYNOPSIS
-
- #include <openssl/x509_vfy.h>
-
- X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void);
- X509_LOOKUP_METHOD *X509_LOOKUP_file(void);
-
- int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type);
- int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type);
- int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type);
-
-=head1 DESCRIPTION
-
-B<X509_LOOKUP_hash_dir> and B<X509_LOOKUP_file> are two certificate
-lookup methods to use with B<X509_STORE>, provided by OpenSSL library.
-
-Users of the library typically do not need to create instances of these
-methods manually, they would be created automatically by
-L<X509_STORE_load_locations(3)> or
-L<SSL_CTX_load_verify_locations(3)>
-functions.
-
-Internally loading of certificates and CRLs is implemented via functions
-B<X509_load_cert_crl_file>, B<X509_load_cert_file> and
-B<X509_load_crl_file>. These functions support parameter I<type>, which
-can be one of constants B<FILETYPE_PEM>, B<FILETYPE_ASN1> and
-B<FILETYPE_DEFAULT>. They load certificates and/or CRLs from specified
-file into memory cache of B<X509_STORE> objects which given B<ctx>
-parameter is associated with.
-
-Functions B<X509_load_cert_file> and
-B<X509_load_crl_file> can load both PEM and DER formats depending of
-type value. Because DER format cannot contain more than one certificate
-or CRL object (while PEM can contain several concatenated PEM objects)
-B<X509_load_cert_crl_file> with B<FILETYPE_ASN1> is equivalent to
-B<X509_load_cert_file>.
-
-Constant B<FILETYPE_DEFAULT> with NULL filename causes these functions
-to load default certificate store file (see
-L<X509_STORE_set_default_paths(3)>.
-
-
-Functions return number of objects loaded from file or 0 in case of
-error.
-
-Both methods support adding several certificate locations into one
-B<X509_STORE>.
-
-This page documents certificate store formats used by these methods and
-caching policy.
-
-=head2 File Method
-
-The B<X509_LOOKUP_file> method loads all the certificates or CRLs
-present in a file into memory at the time the file is added as a
-lookup source.
-
-File format is ASCII text which contains concatenated PEM certificates
-and CRLs.
-
-This method should be used by applications which work with a small
-set of CAs.
-
-=head2 Hashed Directory Method
-
-B<X509_LOOKUP_hash_dir> is a more advanced method, which loads
-certificates and CRLs on demand, and caches them in memory once
-they are loaded. As of OpenSSL 1.0.0, it also checks for newer CRLs
-upon each lookup, so that newer CRLs are as soon as they appear in
-the directory.
-
-The directory should contain one certificate or CRL per file in PEM format,
-with a file name of the form I<hash>.I<N> for a certificate, or
-I<hash>.B<r>I<N> for a CRL.
-The I<hash> is the value returned by the L<X509_NAME_hash(3)> function applied
-to the subject name for certificates or issuer name for CRLs.
-The hash can also be obtained via the B<-hash> option of the L<x509(1)> or
-L<crl(1)> commands.
-
-The .I<N> or .B<r>I<N> suffix is a sequence number that starts at zero, and is
-incremented consecutively for each certificate or CRL with the same I<hash>
-value.
-Gaps in the sequence numbers are not supported, it is assumed that there are no
-more objects with the same hash beyond the first missing number in the
-sequence.
-
-Sequence numbers make it possible for the directory to contain multiple
-certificates with same subject name hash value.
-For example, it is possible to have in the store several certificates with same
-subject or several CRLs with same issuer (and, for example, different validity
-period).
-
-When checking for new CRLs once one CRL for given hash value is
-loaded, hash_dir lookup method checks only for certificates with
-sequence number greater than that of the already cached CRL.
-
-Note that the hash algorithm used for subject name hashing changed in OpenSSL
-1.0.0, and all certificate stores have to be rehashed when moving from OpenSSL
-0.9.8 to 1.0.0.
-
-OpenSSL includes a L<c_rehash(1)> utility which creates symlinks with correct
-hashed names for all files with .pem suffix in a given directory.
-
-=head1 SEE ALSO
-
-L<PEM_read_PrivateKey(3)>,
-L<d2i_X509_bio(3)>,
-L<X509_STORE_load_locations(3)>,
-L<X609_store_add_lookup(3)>,
-L<SSL_CTX_load_verify_locations(3)>,
-
-=head1 COPYRIGHT
-
-Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
-
-Licensed under the OpenSSL license (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
-L<https://www.openssl.org/source/license.html>.
-
-=cut
projects / openssl.git / blobdiff