SSL_CTX_use_certificate(3)

NAME

       SSL_CTX_use_certificate, SSL_CTX_use_certificate_ASN1, SSL_CTX_use_cer-
       tificate_file, SSL_use_certificate, SSL_use_certificate_ASN1,
       SSL_use_certificate_file, SSL_CTX_use_certificate_chain_file,
       SSL_CTX_use_PrivateKey, SSL_CTX_use_PrivateKey_ASN1, SSL_CTX_use_Pri-
       vateKey_file, SSL_CTX_use_RSAPrivateKey, SSL_CTX_use_RSAPri-
       vateKey_ASN1, SSL_CTX_use_RSAPrivateKey_file, SSL_use_PrivateKey_file,
       SSL_use_PrivateKey_ASN1, SSL_use_PrivateKey, SSL_use_RSAPrivateKey,
       SSL_use_RSAPrivateKey_ASN1, SSL_use_RSAPrivateKey_file,
       SSL_CTX_check_private_key, SSL_check_private_key - load certificate and
       key data

SYNOPSIS

        #include <openssl/ssl.h>

        int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x);
        int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, unsigned char *d);
        int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type);
        int SSL_use_certificate(SSL *ssl, X509 *x);
        int SSL_use_certificate_ASN1(SSL *ssl, unsigned char *d, int len);
        int SSL_use_certificate_file(SSL *ssl, const char *file, int type);

        int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file);

        int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey);
        int SSL_CTX_use_PrivateKey_ASN1(int pk, SSL_CTX *ctx, unsigned char *d,
                                        long len);
        int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type);
        int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);
        int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, unsigned char *d, long len);
        int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type);
        int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey);
        int SSL_use_PrivateKey_ASN1(int pk,SSL *ssl, unsigned char *d, long len);
        int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type);
        int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);
        int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, unsigned char *d, long len);
        int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type);

        int SSL_CTX_check_private_key(const SSL_CTX *ctx);
        int SSL_check_private_key(const SSL *ssl);

DESCRIPTION

       These functions load the certificates and private keys into the SSL_CTX
       or SSL object, respectively.

       The SSL_CTX_* class of functions loads the certificates and keys into
       the SSL_CTX object ctx. The information is passed to SSL objects ssl
       created from ctx with SSL_new(3) by copying, so that changes applied to
       ctx do not propagate to already existing SSL objects.

       The SSL_* class of functions only loads certificates and keys into a
       specific SSL object. The specific information is kept, when
       SSL_clear(3) is called for this SSL object.

       SSL_CTX_use_certificate() loads the certificate x into ctx,
       SSL_use_certificate() loads x into ssl. The rest of the certificates
       needed to form the complete certificate chain can be specified using
       the SSL_CTX_add_extra_chain_cert(3) function.

       SSL_CTX_use_certificate_ASN1() loads the ASN1 encoded certificate from
       the memory location d (with length len) into ctx, SSL_use_certifi-
       cate_ASN1() loads the ASN1 encoded certificate into ssl.

       SSL_CTX_use_certificate_file() loads the first certificate stored in
       file into ctx. The formatting type of the certificate must be specified
       from the known types SSL_FILETYPE_PEM, SSL_FILETYPE_ASN1.  SSL_use_cer-
       tificate_file() loads the certificate from file into ssl.  See the
       NOTES section on why SSL_CTX_use_certificate_chain_file() should be
       preferred.

       SSL_CTX_use_certificate_chain_file() loads a certificate chain from
       file into ctx. The certificates must be in PEM format and must be
       sorted starting with the subject's certificate (actual client or server
       certificate), followed by intermediate CA certificates if applicable,
       and ending at the highest level (root) CA.  There is no corresponding
       function working on a single SSL object.

       SSL_CTX_use_PrivateKey() adds pkey as private key to ctx.
       SSL_CTX_use_RSAPrivateKey() adds the private key rsa of type RSA to
       ctx. SSL_use_PrivateKey() adds pkey as private key to ssl;
       SSL_use_RSAPrivateKey() adds rsa as private key of type RSA to ssl.  If
       a certificate has already been set and the private does not belong to
       the certificate an error is returned. To change a certificate, private
       key pair the new certificate needs to be set with SSL_use_certificate()
       or SSL_CTX_use_certificate() before setting the private key with
       SSL_CTX_use_PrivateKey() or SSL_use_PrivateKey().

       SSL_CTX_use_PrivateKey_ASN1() adds the private key of type pk stored at
       memory location d (length len) to ctx.  SSL_CTX_use_RSAPri-
       vateKey_ASN1() adds the private key of type RSA stored at memory loca-
       tion d (length len) to ctx.  SSL_use_PrivateKey_ASN1() and
       SSL_use_RSAPrivateKey_ASN1() add the private key to ssl.

       SSL_CTX_use_PrivateKey_file() adds the first private key found in file
       to ctx. The formatting type of the certificate must be specified from
       the known types SSL_FILETYPE_PEM, SSL_FILETYPE_ASN1.
       SSL_CTX_use_RSAPrivateKey_file() adds the first private RSA key found
       in file to ctx. SSL_use_PrivateKey_file() adds the first private key
       found in file to ssl; SSL_use_RSAPrivateKey_file() adds the first pri-
       vate RSA key found to ssl.

       SSL_CTX_check_private_key() checks the consistency of a private key
       with the corresponding certificate loaded into ctx. If more than one
       key/certificate pair (RSA/DSA) is installed, the last item installed
       will be checked. If e.g. the last item was a RSA certificate or key,
       the RSA key/certificate pair will be checked. SSL_check_private_key()
       performs the same check for ssl. If no key/certificate was explicitly
       added for this ssl, the last item added into ctx will be checked.

NOTES

       The internal certificate store of OpenSSL can hold several private
       key/certificate pairs at a time. The certificate used depends on the
       cipher selected, see also SSL_CTX_set_cipher_list(3).

       When reading certificates and private keys from file, files of type
       SSL_FILETYPE_ASN1 (also known as DER, binary encoding) can only contain
       one certificate or private key, consequently SSL_CTX_use_certifi-
       cate_chain_file() is only applicable to PEM formatting.  Files of type
       SSL_FILETYPE_PEM can contain more than one item.

       SSL_CTX_use_certificate_chain_file() adds the first certificate found
       in the file to the certificate store. The other certificates are added
       to the store of chain certificates using SSL_CTX_add1_chain_cert(3).
       Note: versions of OpenSSL before 1.0.2 only had a single certificate
       chain store for all certificate types, OpenSSL 1.0.2 and later have a
       separate chain store for each type. SSL_CTX_use_certifi-
       cate_chain_file() should be used instead of the SSL_CTX_use_certifi-
       cate_file() function in order to allow the use of complete certificate
       chains even when no trusted CA storage is used or when the CA issuing
       the certificate shall not be added to the trusted CA storage.

       If additional certificates are needed to complete the chain during the
       TLS negotiation, CA certificates are additionally looked up in the
       locations of trusted CA certificates, see SSL_CTX_load_verify_loca-
       tions(3).

       The private keys loaded from file can be encrypted. In order to suc-
       cessfully load encrypted keys, a function returning the passphrase must
       have been supplied, see SSL_CTX_set_default_passwd_cb(3).  (Certificate
       files might be encrypted as well from the technical point of view, it
       however does not make sense as the data in the certificate is consid-
       ered public anyway.)

       All of the functions to set a new certificate will replace any existing
       certificate of the same type that has already been set. Similarly all
       of the functions to set a new private key will replace any private key
       that has already been set. Applications should call SSL_CTX_check_pri-
       vate_key(3) or SSL_check_private_key(3) as appropriate after loading a
       new certificate and private key to confirm that the certificate and key
       match.

RETURN VALUES

       On success, the functions return 1.  Otherwise check out the error
       stack to find out the reason.

HISTORY

       Support for DER encoded private keys (SSL_FILETYPE_ASN1) in
       SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file() was added
       in 0.9.8 .

1.0.2t                            2019-09-10        SSL_CTX_use_certificate(3)

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SSL_CTX_use_certificate(3)

NAME

SYNOPSIS

DESCRIPTION

NOTES

RETURN VALUES

SEE ALSO

HISTORY