NAME
tls_load_file,
tls_unload_file,
tls_config_set_ca_file,
tls_config_set_ca_path,
tls_config_set_ca_mem,
tls_config_set_cert_file,
tls_config_set_cert_mem,
tls_config_set_crl_file,
tls_config_set_crl_mem,
tls_config_set_key_file,
tls_config_set_key_mem,
tls_config_set_ocsp_staple_mem,
tls_config_set_ocsp_staple_file,
tls_config_set_keypair_file,
tls_config_set_keypair_mem,
tls_config_set_keypair_ocsp_file,
tls_config_set_keypair_ocsp_mem,
tls_config_add_keypair_file,
tls_config_add_keypair_ocsp_mem,
tls_config_add_keypair_ocsp_file,
tls_config_add_keypair_mem,
tls_config_clear_keys,
tls_config_set_verify_depth,
tls_config_verify_client,
tls_config_verify_client_optional —
TLS certificate and key
configuration
SYNOPSIS
#include
<tls.h>
uint8_t *
tls_load_file(const char *file,
size_t *len, char
*password);
void
tls_unload_file(uint8_t *buf,
size_t len);
int
tls_config_set_ca_file(struct
tls_config *config, const char *ca_file);
int
tls_config_set_ca_path(struct
tls_config *config, const char *ca_path);
int
tls_config_set_ca_mem(struct
tls_config *config, const uint8_t *cert,
size_t len);
int
tls_config_set_cert_file(struct
tls_config *config, const char *cert_file);
int
tls_config_set_cert_mem(struct
tls_config *config, const uint8_t *cert,
size_t len);
int
tls_config_set_crl_file(struct
tls_config *config, const char *crl_file);
int
tls_config_set_crl_mem(struct
tls_config *config, const uint8_t *crl,
size_t len);
int
tls_config_set_key_file(struct
tls_config *config, const char *key_file);
int
tls_config_set_key_mem(struct
tls_config *config, const uint8_t *key,
size_t len);
int
tls_config_set_ocsp_staple_mem(struct
tls_config *config, const uint8_t *staple,
size_t len);
int
tls_config_set_ocsp_staple_file(struct
tls_config *config, const char
*staple_file);
int
tls_config_set_keypair_file(struct
tls_config *config, const char *cert_file,
const char *key_file);
int
tls_config_set_keypair_mem(struct
tls_config *config, const uint8_t *cert,
size_t cert_len, const uint8_t
*key, size_t key_len);
int
tls_config_set_keypair_ocsp_file(struct
tls_config *config, const char *cert_file,
const char *key_file, const char
*staple_file);
int
tls_config_set_keypair_ocsp_mem(struct
tls_config *config, const uint8_t *cert,
size_t cert_len, const uint8_t
*key, size_t key_len, const
uint8_t *staple, size_t staple_len);
int
tls_config_add_keypair_file(struct
tls_config *config, const char *cert_file,
const char *key_file);
int
tls_config_add_keypair_mem(struct
tls_config *config, const uint8_t *cert,
size_t cert_len, const uint8_t
*key, size_t key_len);
int
tls_config_add_keypair_ocsp_file(struct
tls_config *config, const char *cert_file,
const char *key_file, const char
*staple_file);
int
tls_config_add_keypair_ocsp_mem(struct
tls_config *config, const uint8_t *cert,
size_t cert_len, const uint8_t
*key, size_t key_len, const
uint8_t *staple, size_t staple_len);
void
tls_config_clear_keys(struct
tls_config *config);
int
tls_config_set_verify_depth(struct
tls_config *config, int verify_depth);
void
tls_config_verify_client(struct
tls_config *config);
void
tls_config_verify_client_optional(struct
tls_config *config);
DESCRIPTION
tls_load_file()
loads a certificate or key from disk into memory to be used with
tls_config_set_ca_mem(),
tls_config_set_cert_mem(),
tls_config_set_crl_mem() or
tls_config_set_key_mem(). A private key will be
decrypted if the optional password argument is
specified.
tls_unload_file()
unloads the memory that was returned from an earlier
tls_load_file() call, ensuring that the memory
contents is discarded.
tls_config_set_ca_file()
sets the filename used to load a file containing the root certificates.
tls_config_set_ca_path()
sets the path (directory) which should be searched for root
certificates.
tls_config_set_ca_mem()
sets the root certificates directly from memory.
tls_config_set_cert_file()
sets file from which the public certificate will be read.
tls_config_set_cert_mem()
sets the public certificate directly from memory.
tls_config_set_crl_file()
sets the filename used to load a file containing the Certificate Revocation
List (CRL).
tls_config_set_crl_mem()
sets the CRL directly from memory.
tls_config_set_key_file()
sets the file from which the private key will be read.
tls_config_set_key_mem()
directly sets the private key from memory.
tls_config_set_ocsp_staple_file()
sets a DER-encoded OCSP response to be stapled during the TLS handshake from
the specified file.
tls_config_set_ocsp_staple_mem()
sets a DER-encoded OCSP response to be stapled during the TLS handshake from
memory.
tls_config_set_keypair_file()
sets the files from which the public certificate, and private key will be
read.
tls_config_set_keypair_mem()
directly sets the public certificate, and private key from memory.
tls_config_set_keypair_ocsp_file()
sets the files from which the public certificate, private key, and
DER-encoded OCSP staple will be read.
tls_config_set_keypair_ocsp_mem()
directly sets the public certificate, private key, and DER-encoded OCSP
staple from memory.
tls_config_add_keypair_file()
adds an additional public certificate, and private key from the specified
files, used as an alternative certificate for Server Name Indication (server
only).
tls_config_add_keypair_mem()
adds an additional public certificate, and private key from memory, used as
an alternative certificate for Server Name Indication (server only).
tls_config_add_keypair_ocsp_file()
adds an additional public certificate, private key, and DER-encoded OCSP
staple from the specified files, used as an alternative certificate for
Server Name Indication (server only).
tls_config_add_keypair_ocsp_mem()
adds an additional public certificate, private key, and DER-encoded OCSP
staple from memory, used as an alternative certificate for Server Name
Indication (server only).
tls_config_clear_keys()
clears any secret keys from memory.
tls_config_set_verify_depth()
limits the number of intermediate certificates that will be followed during
certificate validation.
tls_config_verify_client()
enables client certificate verification, requiring the client to send a
certificate (server only).
tls_config_verify_client_optional()
enables client certificate verification, without requiring the client to
send a certificate (server only).
RETURN VALUES
tls_load_file() returns
NULL on error or an out of memory condition.
The other functions return 0 on success or -1 on error.
SEE ALSO
tls_config_ocsp_require_stapling(3), tls_config_set_protocols(3), tls_config_set_session_id(3), tls_configure(3), tls_init(3)
HISTORY
tls_config_set_ca_file(),
tls_config_set_ca_path(),
tls_config_set_cert_file(),
tls_config_set_cert_mem(),
tls_config_set_key_file(),
tls_config_set_key_mem(), and
tls_config_set_verify_depth() appeared in
OpenBSD 5.6 and got their final names in
OpenBSD 5.7.
tls_load_file(),
tls_config_set_ca_mem(), and
tls_config_clear_keys() appeared in
OpenBSD 5.7.
tls_config_verify_client() and
tls_config_verify_client_optional() appeared in
OpenBSD 5.9.
tls_config_set_keypair_file() and
tls_config_set_keypair_mem() appeared in
OpenBSD 6.0, and
tls_config_add_keypair_file() and
tls_config_add_keypair_mem() in
OpenBSD 6.1.
tls_config_set_crl_file() and
tls_config_set_crl_mem() appeared in
OpenBSD 6.2.
AUTHORS
Joel Sing
<jsing@openbsd.org>
with contibutions from
Ted Unangst
<tedu@openbsd.org>
and
Bob Beck
<beck@openbsd.org>.
tls_load_file() and
tls_config_set_ca_mem() were written by
Reyk Floeter
<reyk@openbsd.org>.