1OSSL_STORE(7)                       OpenSSL                      OSSL_STORE(7)
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NAME

6       ossl_store - Store retrieval functions
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SYNOPSIS

9       #include <openssl/store.h>
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DESCRIPTION

12   General
13       A STORE is a layer of functionality to retrieve a number of supported
14       objects from a repository of any kind, addressable as a file name or as
15       a URI.
16
17       The functionality supports the pattern "open a channel to the
18       repository", "loop and retrieve one object at a time", and "finish up
19       by closing the channel".
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21       The retrieved objects are returned as a wrapper type OSSL_STORE_INFO,
22       from which an OpenSSL type can be retrieved.
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24   URI schemes and loaders
25       Support for a URI scheme is called a STORE "loader", and can be added
26       dynamically from the calling application or from a loadable engine.
27
28       Support for the 'file' scheme is built into "libcrypto".  See
29       ossl_store-file(7) for more information.
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31   UI_METHOD and pass phrases
32       The OSS_STORE API does nothing to enforce any specific format or
33       encoding on the pass phrase that the UI_METHOD provides.  However, the
34       pass phrase is expected to be UTF-8 encoded.  The result of any other
35       encoding is undefined.
36

EXAMPLES

38   A generic call
39        OSSL_STORE_CTX *ctx = OSSL_STORE_open("file:/foo/bar/data.pem");
40
41        /*
42         * OSSL_STORE_eof() simulates file semantics for any repository to signal
43         * that no more data can be expected
44         */
45        while (!OSSL_STORE_eof(ctx)) {
46            OSSL_STORE_INFO *info = OSSL_STORE_load(ctx);
47
48            /*
49             * Do whatever is necessary with the OSSL_STORE_INFO,
50             * here just one example
51             */
52            switch (OSSL_STORE_INFO_get_type(info)) {
53            case OSSL_STORE_INFO_X509:
54                /* Print the X.509 certificate text */
55                X509_print_fp(stdout, OSSL_STORE_INFO_get0_CERT(info));
56                /* Print the X.509 certificate PEM output */
57                PEM_write_X509(stdout, OSSL_STORE_INFO_get0_CERT(info));
58                break;
59            }
60        }
61
62        OSSL_STORE_close(ctx);
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SEE ALSO

65       OSSL_STORE_INFO(3), OSSL_STORE_LOADER(3), OSSL_STORE_open(3),
66       OSSL_STORE_expect(3), OSSL_STORE_SEARCH(3)
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69       Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
70
71       Licensed under the OpenSSL license (the "License").  You may not use
72       this file except in compliance with the License.  You can obtain a copy
73       in the file LICENSE in the source distribution or at
74       <https://www.openssl.org/source/license.html>.
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781.1.1d                            2019-10-03                     OSSL_STORE(7)
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