- NAME
- SYNOPSIS
- DESCRIPTION
- NOTES
- RESTRICTIONS
- RETURN VALUES
- SEE ALSO

# NAME

SSL_CTX_set_cert_store, SSL_CTX_get_cert_store - manipulate X509 certificate verification storage

# SYNOPSIS

     #include <openssl/ssl.h>

     void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store);
     X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx);

# DESCRIPTION

`SSL_CTX_set_cert_store()` sets/replaces the certificate verification storage of ctx to/with store. If another X509_STORE object is currently set in ctx, it will be X509_STORE_free()ed.

`SSL_CTX_get_cert_store()` returns a pointer to the current certificate verification storage.

# NOTES

In order to verify the certificates presented by the peer, trusted CA certificates must be accessed. These CA certificates are made available via lookup methods, handled inside the X509_STORE. From the X509_STORE the X509_STORE_CTX used when verifying certificates is created.

Typically the trusted certificate store is handled indirectly via using SSL_CTX_load_verify_locations. Using the `SSL_CTX_set_cert_store()` and `SSL_CTX_get_cert_store()` functions it is possible to manipulate the X509_STORE object beyond the SSL_CTX_load_verify_locations call.

Currently no detailed documentation on how to use the X509_STORE object is available. Not all members of the X509_STORE are used when the verification takes place. So will e.g. the `verify_callback()` be overridden with the `verify_callback()` set via the SSL_CTX_set_verify family of functions. This document must therefore be updated when documentation about the X509_STORE object and its handling becomes available.

# RESTRICTIONS

The X509_STORE structure used by an SSL_CTX is used for verifying peer certificates and building certificate chains, it is also shared by every child SSL structure. Applications wanting finer control can use functions such as `SSL_CTX_set1_verify_cert_store()` instead.

# RETURN VALUES

`SSL_CTX_set_cert_store()` does not return diagnostic output.

`SSL_CTX_get_cert_store()` returns the current setting.

# SEE ALSO

ssl, SSL_CTX_load_verify_locations, SSL_CTX_set_verify