| SSL_CTX_set_cipher_list.pod (72613) | SSL_CTX_set_cipher_list.pod (89837) |
|---|---|
| 1=pod 2 3=head1 NAME 4 5SSL_CTX_set_cipher_list, SSL_set_cipher_list - choose list of available SSL_CIPHERs 6 7=head1 SYNOPSIS 8 --- 20 unchanged lines hidden (view full) --- 29are simply ignored. Failure is only flagged if no ciphers could be collected 30at all. 31 32It should be noted, that inclusion of a cipher to be used into the list is 33a necessary condition. On the client side, the inclusion into the list is 34also sufficient. On the server side, additional restrictions apply. All ciphers 35have additional requirements. ADH ciphers don't need a certificate, but 36DH-parameters must have been set. All other ciphers need a corresponding | 1=pod 2 3=head1 NAME 4 5SSL_CTX_set_cipher_list, SSL_set_cipher_list - choose list of available SSL_CIPHERs 6 7=head1 SYNOPSIS 8 --- 20 unchanged lines hidden (view full) --- 29are simply ignored. Failure is only flagged if no ciphers could be collected 30at all. 31 32It should be noted, that inclusion of a cipher to be used into the list is 33a necessary condition. On the client side, the inclusion into the list is 34also sufficient. On the server side, additional restrictions apply. All ciphers 35have additional requirements. ADH ciphers don't need a certificate, but 36DH-parameters must have been set. All other ciphers need a corresponding |
| 37certificate and key. A RSA cipher can only be chosen, when a RSA certificate is 38available, the respective is valid for DSA ciphers. Ciphers using EDH need 39a certificate and key and DH-parameters. | 37certificate and key. |
| 40 | 38 |
| 39A RSA cipher can only be chosen, when a RSA certificate is available. 40RSA export ciphers with a keylength of 512 bits for the RSA key require 41a temporary 512 bit RSA key, as typically the supplied key has a length 42of 1024 bit (see 43L<SSL_CTX_set_tmp_rsa_callback(3)|SSL_CTX_set_tmp_rsa_callback(3)>). 44RSA ciphers using EDH need a certificate and key and additional DH-parameters 45(see L<SSL_CTX_set_tmp_dh_callback(3)|SSL_CTX_set_tmp_dh_callback(3)>). 46 47A DSA cipher can only be chosen, when a DSA certificate is available. 48DSA ciphers always use DH key exchange and therefore need DH-parameters 49(see L<SSL_CTX_set_tmp_dh_callback(3)|SSL_CTX_set_tmp_dh_callback(3)>). 50 51When these conditions are not met for any cipher in the list (e.g. a 52client only supports export RSA ciphers with a asymmetric key length 53of 512 bits and the server is not configured to use temporary RSA 54keys), the "no shared cipher" (SSL_R_NO_SHARED_CIPHER) error is generated 55and the handshake will fail. 56 |
|
| 41=head1 RETURN VALUES 42 43SSL_CTX_set_cipher_list() and SSL_set_cipher_list() return 1 if any cipher 44could be selected and 0 on complete failure. 45 46=head1 SEE ALSO 47 48L<ssl(3)|ssl(3)>, L<SSL_get_ciphers(3)|SSL_get_ciphers(3)>, 49L<SSL_CTX_use_certificate(3)|SSL_CTX_use_certificate(3)>, | 57=head1 RETURN VALUES 58 59SSL_CTX_set_cipher_list() and SSL_set_cipher_list() return 1 if any cipher 60could be selected and 0 on complete failure. 61 62=head1 SEE ALSO 63 64L<ssl(3)|ssl(3)>, L<SSL_get_ciphers(3)|SSL_get_ciphers(3)>, 65L<SSL_CTX_use_certificate(3)|SSL_CTX_use_certificate(3)>, |
| 66L<SSL_CTX_set_tmp_rsa_callback(3)|SSL_CTX_set_tmp_rsa_callback(3)>, 67L<SSL_CTX_set_tmp_dh_callback(3)|SSL_CTX_set_tmp_dh_callback(3)>, |
|
| 50L<ciphers(1)|ciphers(1)> 51 52=cut | 68L<ciphers(1)|ciphers(1)> 69 70=cut |