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_use_certificate_chain_file(SSL *ssl, 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,
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(SSL_CTX *ctx);
- int SSL_check_private_key(SSL *ssl);
+ int SSL_CTX_check_private_key(const SSL_CTX *ctx);
+ int SSL_check_private_key(const SSL *ssl);
=head1 DESCRIPTION
The SSL_CTX_* class of functions loads the certificates and keys into the
SSL_CTX object B<ctx>. The information is passed to SSL objects B<ssl>
-created from B<ctx> with L<SSL_new(3)|SSL_new(3)> by copying, so that
+created from B<ctx> with L<SSL_new(3)> by copying, so that
changes applied to B<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
-L<SSL_clear(3)|SSL_clear(3)> is called for this SSL object.
+L<SSL_clear(3)> is called for this SSL object.
SSL_CTX_use_certificate() loads the certificate B<x> into B<ctx>,
SSL_use_certificate() loads B<x> into B<ssl>. The rest of the
certificates needed to form the complete certificate chain can be
specified using the
-L<SSL_CTX_add_extra_chain_cert(3)|SSL_CTX_add_extra_chain_cert(3)>
+L<SSL_CTX_add_extra_chain_cert(3)>
function.
SSL_CTX_use_certificate_ASN1() loads the ASN1 encoded certificate from
SSL_CTX_use_certificate_chain_file() loads a certificate chain from
B<file> into B<ctx>. The certificates must be in PEM format and must
-be sorted starting with the certificate to the highest level (root CA).
-There is no corresponding function working on a single SSL object.
+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. SSL_use_certificate_chain_file() is
+similar except it loads the cerificate chain into B<ssl>.
SSL_CTX_use_PrivateKey() adds B<pkey> as private key to B<ctx>.
SSL_CTX_use_RSAPrivateKey() adds the private key B<rsa> of type RSA
to B<ctx>. SSL_use_PrivateKey() adds B<pkey> as private key to B<ssl>;
SSL_use_RSAPrivateKey() adds B<rsa> as private key of type RSA to B<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 B<pk>
stored at memory location B<d> (length B<len>) to B<ctx>.
=head1 NOTES
-The internal certificate store of OpenSSL can hold two private key/certificate
-pairs at a time: one key/certificate of type RSA and one key/certificate
-of type DSA. The certificate used depends on the cipher select, see
-also L<SSL_CTX_set_cipher_list(3)|SSL_CTX_set_cipher_list(3)>.
+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 L<SSL_CTX_set_cipher_list(3)>.
When reading certificates and private keys from file, files of type
SSL_FILETYPE_ASN1 (also known as B<DER>, binary encoding) can only contain
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
-L<SSL_CTX_add_extra_chain_cert(3)|SSL_CTX_add_extra_chain_cert(3)>.
-There exists only one extra chain store, so that the same chain is appended
-to both types of certificates, RSA and DSA! If it is not intented to use
-both type of certificate at the same time, it is recommended to use the
-SSL_CTX_use_certificate_chain_file() instead of the
-SSL_CTX_use_certificate_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.
+to the store of chain certificates using L<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_certificate_chain_file()
+should be used instead of the SSL_CTX_use_certificate_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
-L<SSL_CTX_load_verify_locations(3)|SSL_CTX_load_verify_locations(3)>.
+L<SSL_CTX_load_verify_locations(3)>.
The private keys loaded from file can be encrypted. In order to successfully
load encrypted keys, a function returning the passphrase must have been
supplied, see
-L<SSL_CTX_set_default_passwd_cb(3)|SSL_CTX_set_default_passwd_cb(3)>.
+L<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 considered public anyway.)
=head1 SEE ALSO
-L<ssl(3)|ssl(3)>, L<SSL_new(3)|SSL_new(3)>, L<SSL_clear(3)|SSL_clear(3)>,
-L<SSL_CTX_load_verify_locations(3)|SSL_CTX_load_verify_locations(3)>,
-L<SSL_CTX_set_default_passwd_cb(3)|SSL_CTX_set_default_passwd_cb(3)>,
-L<SSL_CTX_set_cipher_list(3)|SSL_CTX_set_cipher_list(3)>,
-L<SSL_CTX_add_extra_chain_cert(3)|SSL_CTX_add_extra_chain_cert(3)>
+L<ssl(3)>, L<SSL_new(3)>, L<SSL_clear(3)>,
+L<SSL_CTX_load_verify_locations(3)>,
+L<SSL_CTX_set_default_passwd_cb(3)>,
+L<SSL_CTX_set_cipher_list(3)>,
+L<SSL_CTX_set_client_cert_cb(3)>,
+L<SSL_CTX_add_extra_chain_cert(3)>
=cut
projects / openssl.git / blobdiff