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OSSL_STORE(7) OpenSSL OSSL_STORE(7)
 

ossl_store - Store retrieval functions

#include <openssl/store.h>

A STORE is a layer of functionality to retrieve a number of supported objects from a repository of any kind, addressable as a file name or as a URI.
The functionality supports the pattern "open a channel to the repository", "loop and retrieve one object at a time", and "finish up by closing the channel".
The retrieved objects are returned as a wrapper type OSSL_STORE_INFO, from which an OpenSSL type can be retrieved.

Support for a URI scheme is called a STORE "loader", and can be added dynamically from the calling application or from a loadable engine.
Support for the 'file' scheme is built into "libcrypto". See ossl_store-file(7) for more information.

The OSS_STORE API does nothing to enforce any specific format or encoding on the pass phrase that the UI_METHOD provides. However, the pass phrase is expected to be UTF-8 encoded. The result of any other encoding is undefined.

 OSSL_STORE_CTX *ctx = OSSL_STORE_open("file:/foo/bar/data.pem");
 /*
  * OSSL_STORE_eof() simulates file semantics for any repository to signal
  * that no more data can be expected
  */
 while (!OSSL_STORE_eof(ctx)) {
     OSSL_STORE_INFO *info = OSSL_STORE_load(ctx);
     /*
      * Do whatever is necessary with the OSSL_STORE_INFO,
      * here just one example
      */
     switch (OSSL_STORE_INFO_get_type(info)) {
     case OSSL_STORE_INFO_X509:
         /* Print the X.509 certificate text */
         X509_print_fp(stdout, OSSL_STORE_INFO_get0_CERT(info));
         /* Print the X.509 certificate PEM output */
         PEM_write_X509(stdout, OSSL_STORE_INFO_get0_CERT(info));
         break;
     }
 }
 OSSL_STORE_close(ctx);

OSSL_STORE_INFO(3), OSSL_STORE_LOADER(3), OSSL_STORE_open(3), OSSL_STORE_expect(3), OSSL_STORE_SEARCH(3)

Copyright 2016-2018 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 <https://www.openssl.org/source/license.html>.
2018-11-20 1.1.1a

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