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authorBernhard Schmidt <berni@debian.org>2020-08-15 21:29:50 +0200
committerBernhard Schmidt <berni@debian.org>2020-08-15 21:29:50 +0200
commit1079962e4c06f88a54e50d997c1b7e84303d30b4 (patch)
tree4d019426928435425214ccedd6f89b70dbdf035d /src/openvpn/ssl_mbedtls.c
parent620785fe268a1221c1ba7a9cb5a70f3140a4f1ca (diff)
New upstream version 2.5~beta1upstream/2.5_beta1
Diffstat (limited to 'src/openvpn/ssl_mbedtls.c')
-rw-r--r--src/openvpn/ssl_mbedtls.c355
1 files changed, 230 insertions, 125 deletions
diff --git a/src/openvpn/ssl_mbedtls.c b/src/openvpn/ssl_mbedtls.c
index 4746261..9c87478 100644
--- a/src/openvpn/ssl_mbedtls.c
+++ b/src/openvpn/ssl_mbedtls.c
@@ -35,7 +35,7 @@
#include "syshead.h"
-#if defined(ENABLE_CRYPTO) && defined(ENABLE_CRYPTO_MBEDTLS)
+#if defined(ENABLE_CRYPTO_MBEDTLS)
#include "errlevel.h"
#include "ssl_backend.h"
@@ -43,6 +43,7 @@
#include "buffer.h"
#include "misc.h"
#include "manage.h"
+#include "pkcs11_backend.h"
#include "ssl_common.h"
#include <mbedtls/havege.h>
@@ -64,12 +65,12 @@
static const mbedtls_x509_crt_profile openvpn_x509_crt_profile_legacy =
{
/* Hashes from SHA-1 and above */
- MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 ) |
- MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_RIPEMD160 ) |
- MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 ) |
- MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
- MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) |
- MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
+ MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 )
+ |MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_RIPEMD160 )
+ |MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 )
+ |MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 )
+ |MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 )
+ |MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
0xFFFFFFF, /* Any PK alg */
0xFFFFFFF, /* Any curve */
1024, /* RSA-1024 and larger */
@@ -78,10 +79,10 @@ static const mbedtls_x509_crt_profile openvpn_x509_crt_profile_legacy =
static const mbedtls_x509_crt_profile openvpn_x509_crt_profile_preferred =
{
/* SHA-2 and above */
- MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 ) |
- MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
- MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) |
- MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
+ MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 )
+ |MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 )
+ |MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 )
+ |MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
0xFFFFFFF, /* Any PK alg */
0xFFFFFFF, /* Any curve */
2048, /* RSA-2048 and larger */
@@ -167,17 +168,7 @@ tls_ctx_free(struct tls_root_ctx *ctx)
}
#if defined(ENABLE_PKCS11)
- if (ctx->priv_key_pkcs11 != NULL)
- {
- mbedtls_pkcs11_priv_key_free(ctx->priv_key_pkcs11);
- free(ctx->priv_key_pkcs11);
- }
-#endif
-#if defined(MANAGMENT_EXTERNAL_KEY)
- if (ctx->external_key != NULL)
- {
- free(ctx->external_key);
- }
+ pkcs11h_certificate_freeCertificate(ctx->pkcs11_cert);
#endif
if (ctx->allowed_ciphers)
@@ -185,6 +176,11 @@ tls_ctx_free(struct tls_root_ctx *ctx)
free(ctx->allowed_ciphers);
}
+ if (ctx->groups)
+ {
+ free(ctx->groups);
+ }
+
CLEAR(*ctx);
ctx->initialised = false;
@@ -199,12 +195,63 @@ tls_ctx_initialised(struct tls_root_ctx *ctx)
return ctx->initialised;
}
+#ifdef HAVE_EXPORT_KEYING_MATERIAL
+int
+mbedtls_ssl_export_keys_cb(void *p_expkey, const unsigned char *ms,
+ const unsigned char *kb, size_t maclen,
+ size_t keylen, size_t ivlen,
+ const unsigned char client_random[32],
+ const unsigned char server_random[32],
+ mbedtls_tls_prf_types tls_prf_type)
+{
+ struct tls_session *session = p_expkey;
+ struct key_state_ssl *ks_ssl = &session->key[KS_PRIMARY].ks_ssl;
+ unsigned char client_server_random[64];
+
+ ks_ssl->exported_key_material = gc_malloc(session->opt->ekm_size,
+ true, NULL);
+
+ memcpy(client_server_random, client_random, 32);
+ memcpy(client_server_random + 32, server_random, 32);
+
+ const size_t ms_len = sizeof(ks_ssl->ctx->session->master);
+ int ret = mbedtls_ssl_tls_prf(tls_prf_type, ms, ms_len,
+ session->opt->ekm_label, client_server_random,
+ sizeof(client_server_random), ks_ssl->exported_key_material,
+ session->opt->ekm_size);
+
+ if (!mbed_ok(ret))
+ {
+ secure_memzero(ks_ssl->exported_key_material, session->opt->ekm_size);
+ }
+
+ secure_memzero(client_server_random, sizeof(client_server_random));
+
+ return ret;
+}
+#endif /* HAVE_EXPORT_KEYING_MATERIAL */
+
void
key_state_export_keying_material(struct key_state_ssl *ssl,
struct tls_session *session)
{
+ if (ssl->exported_key_material)
+ {
+ unsigned int size = session->opt->ekm_size;
+ struct gc_arena gc = gc_new();
+ unsigned int len = (size * 2) + 2;
+
+ const char *key = format_hex_ex(ssl->exported_key_material,
+ size, len, 0, NULL, &gc);
+ setenv_str(session->opt->es, "exported_keying_material", key);
+
+ dmsg(D_TLS_DEBUG_MED, "%s: exported keying material: %s",
+ __func__, key);
+ gc_free(&gc);
+ }
}
+
bool
tls_ctx_set_options(struct tls_root_ctx *ctx, unsigned int ssl_flags)
{
@@ -241,40 +288,29 @@ tls_ctx_restrict_ciphers_tls13(struct tls_root_ctx *ctx, const char *ciphers)
}
msg(M_WARN, "mbed TLS does not support setting tls-ciphersuites. "
- "Ignoring TLS 1.3 cipher list: %s", ciphers);
+ "Ignoring TLS 1.3 cipher list: %s", ciphers);
}
void
tls_ctx_restrict_ciphers(struct tls_root_ctx *ctx, const char *ciphers)
{
char *tmp_ciphers, *tmp_ciphers_orig, *token;
- int i, cipher_count;
- int ciphers_len;
if (NULL == ciphers)
{
return; /* Nothing to do */
-
}
- ciphers_len = strlen(ciphers);
ASSERT(NULL != ctx);
- ASSERT(0 != ciphers_len);
/* Get number of ciphers */
- for (i = 0, cipher_count = 1; i < ciphers_len; i++)
- {
- if (ciphers[i] == ':')
- {
- cipher_count++;
- }
- }
+ int cipher_count = get_num_elements(ciphers, ':');
/* Allocate an array for them */
ALLOC_ARRAY_CLEAR(ctx->allowed_ciphers, int, cipher_count+1)
/* Parse allowed ciphers, getting IDs */
- i = 0;
+ int i = 0;
tmp_ciphers_orig = tmp_ciphers = string_alloc(ciphers, NULL);
token = strtok(tmp_ciphers, ":");
@@ -308,10 +344,45 @@ tls_ctx_set_cert_profile(struct tls_root_ctx *ctx, const char *profile)
}
else
{
- msg (M_FATAL, "ERROR: Invalid cert profile: %s", profile);
+ msg(M_FATAL, "ERROR: Invalid cert profile: %s", profile);
+ }
+}
+
+void
+tls_ctx_set_tls_groups(struct tls_root_ctx *ctx, const char *groups)
+{
+ ASSERT(ctx);
+ struct gc_arena gc = gc_new();
+
+ /* Get number of groups and allocate an array in ctx */
+ int groups_count = get_num_elements(groups, ':');
+ ALLOC_ARRAY_CLEAR(ctx->groups, mbedtls_ecp_group_id, groups_count + 1)
+
+ /* Parse allowed ciphers, getting IDs */
+ int i = 0;
+ char *tmp_groups = string_alloc(groups, &gc);
+
+ const char *token;
+ while ((token = strsep(&tmp_groups, ":")))
+ {
+ const mbedtls_ecp_curve_info *ci =
+ mbedtls_ecp_curve_info_from_name(token);
+ if (!ci)
+ {
+ msg(M_WARN, "Warning unknown curve/group specified: %s", token);
+ }
+ else
+ {
+ ctx->groups[i] = ci->grp_id;
+ i++;
+ }
}
+ ctx->groups[i] = MBEDTLS_ECP_DP_NONE;
+
+ gc_free(&gc);
}
+
void
tls_ctx_check_cert_time(const struct tls_root_ctx *ctx)
{
@@ -334,13 +405,13 @@ tls_ctx_check_cert_time(const struct tls_root_ctx *ctx)
void
tls_ctx_load_dh_params(struct tls_root_ctx *ctx, const char *dh_file,
- const char *dh_inline
- )
+ bool dh_inline)
{
- if (!strcmp(dh_file, INLINE_FILE_TAG) && dh_inline)
+ if (dh_inline)
{
if (!mbed_ok(mbedtls_dhm_parse_dhm(ctx->dhm_ctx,
- (const unsigned char *) dh_inline, strlen(dh_inline)+1)))
+ (const unsigned char *) dh_file,
+ strlen(dh_file) + 1)))
{
msg(M_FATAL, "Cannot read inline DH parameters");
}
@@ -370,9 +441,7 @@ tls_ctx_load_ecdh_params(struct tls_root_ctx *ctx, const char *curve_name
int
tls_ctx_load_pkcs12(struct tls_root_ctx *ctx, const char *pkcs12_file,
- const char *pkcs12_file_inline,
- bool load_ca_file
- )
+ bool pkcs12_file_inline, bool load_ca_file)
{
msg(M_FATAL, "PKCS #12 files not yet supported for mbed TLS.");
return 0;
@@ -388,8 +457,7 @@ tls_ctx_load_cryptoapi(struct tls_root_ctx *ctx, const char *cryptoapi_cert)
void
tls_ctx_load_cert_file(struct tls_root_ctx *ctx, const char *cert_file,
- const char *cert_inline
- )
+ bool cert_inline)
{
ASSERT(NULL != ctx);
@@ -398,10 +466,11 @@ tls_ctx_load_cert_file(struct tls_root_ctx *ctx, const char *cert_file,
ALLOC_OBJ_CLEAR(ctx->crt_chain, mbedtls_x509_crt);
}
- if (!strcmp(cert_file, INLINE_FILE_TAG) && cert_inline)
+ if (cert_inline)
{
if (!mbed_ok(mbedtls_x509_crt_parse(ctx->crt_chain,
- (const unsigned char *) cert_inline, strlen(cert_inline)+1)))
+ (const unsigned char *)cert_file,
+ strlen(cert_file) + 1)))
{
msg(M_FATAL, "Cannot load inline certificate file");
}
@@ -417,8 +486,7 @@ tls_ctx_load_cert_file(struct tls_root_ctx *ctx, const char *cert_file,
int
tls_ctx_load_priv_file(struct tls_root_ctx *ctx, const char *priv_key_file,
- const char *priv_key_inline
- )
+ bool priv_key_inline)
{
int status;
ASSERT(NULL != ctx);
@@ -428,19 +496,20 @@ tls_ctx_load_priv_file(struct tls_root_ctx *ctx, const char *priv_key_file,
ALLOC_OBJ_CLEAR(ctx->priv_key, mbedtls_pk_context);
}
- if (!strcmp(priv_key_file, INLINE_FILE_TAG) && priv_key_inline)
+ if (priv_key_inline)
{
status = mbedtls_pk_parse_key(ctx->priv_key,
- (const unsigned char *) priv_key_inline, strlen(priv_key_inline)+1,
- NULL, 0);
+ (const unsigned char *) priv_key_file,
+ strlen(priv_key_file) + 1, NULL, 0);
if (MBEDTLS_ERR_PK_PASSWORD_REQUIRED == status)
{
char passbuf[512] = {0};
pem_password_callback(passbuf, 512, 0, NULL);
status = mbedtls_pk_parse_key(ctx->priv_key,
- (const unsigned char *) priv_key_inline,
- strlen(priv_key_inline)+1, (unsigned char *) passbuf,
+ (const unsigned char *) priv_key_file,
+ strlen(priv_key_file) + 1,
+ (unsigned char *) passbuf,
strlen(passbuf));
}
}
@@ -462,7 +531,8 @@ tls_ctx_load_priv_file(struct tls_root_ctx *ctx, const char *priv_key_file,
management_auth_failure(management, UP_TYPE_PRIVATE_KEY, NULL);
}
#endif
- msg(M_WARN, "Cannot load private key file %s", priv_key_file);
+ msg(M_WARN, "Cannot load private key file %s",
+ print_key_filename(priv_key_file, priv_key_inline));
return 1;
}
@@ -475,13 +545,6 @@ tls_ctx_load_priv_file(struct tls_root_ctx *ctx, const char *priv_key_file,
return 0;
}
-#ifdef MANAGMENT_EXTERNAL_KEY
-
-
-struct external_context {
- size_t signature_length;
-};
-
/**
* external_pkcs1_sign implements a mbed TLS rsa_sign_func callback, that uses
* the management interface to request an RSA signature for the supplied hash.
@@ -508,11 +571,9 @@ external_pkcs1_sign( void *ctx_voidptr,
unsigned char *sig )
{
struct external_context *const ctx = ctx_voidptr;
- char *in_b64 = NULL;
- char *out_b64 = NULL;
int rv;
- unsigned char *p = sig;
- size_t asn_len = 0, oid_size = 0, sig_len = 0;
+ uint8_t *to_sign = NULL;
+ size_t asn_len = 0, oid_size = 0;
const char *oid = NULL;
if (NULL == ctx)
@@ -548,12 +609,14 @@ external_pkcs1_sign( void *ctx_voidptr,
asn_len = 10 + oid_size;
}
- sig_len = ctx->signature_length;
- if ( (SIZE_MAX - hashlen) < asn_len || (hashlen + asn_len) > sig_len)
+ if ((SIZE_MAX - hashlen) < asn_len
+ || ctx->signature_length < (asn_len + hashlen))
{
return MBEDTLS_ERR_RSA_BAD_INPUT_DATA;
}
+ ALLOC_ARRAY_CLEAR(to_sign, uint8_t, asn_len + hashlen);
+ uint8_t *p = to_sign;
if (md_alg != MBEDTLS_MD_NONE)
{
/*
@@ -578,34 +641,16 @@ external_pkcs1_sign( void *ctx_voidptr,
*p++ = MBEDTLS_ASN1_OCTET_STRING;
*p++ = hashlen;
- /* Determine added ASN length */
- asn_len = p - sig;
+ /* Double-check ASN length */
+ ASSERT(asn_len == p - to_sign);
}
/* Copy the hash to be signed */
- memcpy( p, hash, hashlen );
+ memcpy(p, hash, hashlen);
- /* convert 'from' to base64 */
- if (openvpn_base64_encode(sig, asn_len + hashlen, &in_b64) <= 0)
- {
- rv = MBEDTLS_ERR_RSA_BAD_INPUT_DATA;
- goto done;
- }
-
- /* call MI for signature */
- if (management)
- {
- out_b64 = management_query_rsa_sig(management, in_b64);
- }
- if (!out_b64)
- {
- rv = MBEDTLS_ERR_RSA_PRIVATE_FAILED;
- goto done;
- }
-
- /* decode base64 signature to binary and verify length */
- if (openvpn_base64_decode(out_b64, sig, ctx->signature_length) !=
- ctx->signature_length)
+ /* Call external signature function */
+ if (!ctx->sign(ctx->sign_ctx, to_sign, asn_len + hashlen, sig,
+ ctx->signature_length))
{
rv = MBEDTLS_ERR_RSA_PRIVATE_FAILED;
goto done;
@@ -614,14 +659,7 @@ external_pkcs1_sign( void *ctx_voidptr,
rv = 0;
done:
- if (in_b64)
- {
- free(in_b64);
- }
- if (out_b64)
- {
- free(out_b64);
- }
+ free(to_sign);
return rv;
}
@@ -634,23 +672,30 @@ external_key_len(void *vctx)
}
int
-tls_ctx_use_external_private_key(struct tls_root_ctx *ctx,
- const char *cert_file, const char *cert_file_inline)
+tls_ctx_use_external_signing_func(struct tls_root_ctx *ctx,
+ external_sign_func sign_func, void *sign_ctx)
{
ASSERT(NULL != ctx);
- tls_ctx_load_cert_file(ctx, cert_file, cert_file_inline);
-
if (ctx->crt_chain == NULL)
{
+ msg(M_WARN, "ERROR: external key requires a certificate.");
+ return 1;
+ }
+
+ if (mbedtls_pk_get_type(&ctx->crt_chain->pk) != MBEDTLS_PK_RSA)
+ {
+ msg(M_WARN, "ERROR: external key with mbed TLS requires a "
+ "certificate with an RSA key.");
return 1;
}
- ALLOC_OBJ_CLEAR(ctx->external_key, struct external_context);
- ctx->external_key->signature_length = mbedtls_pk_get_len(&ctx->crt_chain->pk);
+ ctx->external_key.signature_length = mbedtls_pk_get_len(&ctx->crt_chain->pk);
+ ctx->external_key.sign = sign_func;
+ ctx->external_key.sign_ctx = sign_ctx;
ALLOC_OBJ_CLEAR(ctx->priv_key, mbedtls_pk_context);
- if (!mbed_ok(mbedtls_pk_setup_rsa_alt(ctx->priv_key, ctx->external_key,
+ if (!mbed_ok(mbedtls_pk_setup_rsa_alt(ctx->priv_key, &ctx->external_key,
NULL, external_pkcs1_sign, external_key_len)))
{
return 1;
@@ -658,22 +703,67 @@ tls_ctx_use_external_private_key(struct tls_root_ctx *ctx,
return 0;
}
-#endif /* ifdef MANAGMENT_EXTERNAL_KEY */
+
+#ifdef ENABLE_MANAGEMENT
+/** Query the management interface for a signature, see external_sign_func. */
+static bool
+management_sign_func(void *sign_ctx, const void *src, size_t src_len,
+ void *dst, size_t dst_len)
+{
+ bool ret = false;
+ char *src_b64 = NULL;
+ char *dst_b64 = NULL;
+
+ if (!management || (openvpn_base64_encode(src, src_len, &src_b64) <= 0))
+ {
+ goto cleanup;
+ }
+
+ /*
+ * We only support RSA external keys and PKCS1 signatures at the moment
+ * in mbed TLS, so the signature parameter is hardcoded to this encoding
+ */
+ if (!(dst_b64 = management_query_pk_sig(management, src_b64,
+ "RSA_PKCS1_PADDING")))
+ {
+ goto cleanup;
+ }
+
+ if (openvpn_base64_decode(dst_b64, dst, dst_len) != dst_len)
+ {
+ goto cleanup;
+ }
+
+ ret = true;
+cleanup:
+ free(src_b64);
+ free(dst_b64);
+
+ return ret;
+}
+
+int
+tls_ctx_use_management_external_key(struct tls_root_ctx *ctx)
+{
+ return tls_ctx_use_external_signing_func(ctx, management_sign_func, NULL);
+}
+
+#endif /* ifdef ENABLE_MANAGEMENT */
void
tls_ctx_load_ca(struct tls_root_ctx *ctx, const char *ca_file,
- const char *ca_inline, const char *ca_path, bool tls_server
- )
+ bool ca_inline, const char *ca_path, bool tls_server)
{
if (ca_path)
{
msg(M_FATAL, "ERROR: mbed TLS cannot handle the capath directive");
}
- if (ca_file && !strcmp(ca_file, INLINE_FILE_TAG) && ca_inline)
+ if (ca_file && ca_inline)
{
if (!mbed_ok(mbedtls_x509_crt_parse(ctx->ca_chain,
- (const unsigned char *) ca_inline, strlen(ca_inline)+1)))
+ (const unsigned char *) ca_file,
+ strlen(ca_file) + 1)))
{
msg(M_FATAL, "Cannot load inline CA certificates");
}
@@ -690,8 +780,7 @@ tls_ctx_load_ca(struct tls_root_ctx *ctx, const char *ca_file,
void
tls_ctx_load_extra_certs(struct tls_root_ctx *ctx, const char *extra_certs_file,
- const char *extra_certs_inline
- )
+ bool extra_certs_inline)
{
ASSERT(NULL != ctx);
@@ -700,11 +789,11 @@ tls_ctx_load_extra_certs(struct tls_root_ctx *ctx, const char *extra_certs_file,
ALLOC_OBJ_CLEAR(ctx->crt_chain, mbedtls_x509_crt);
}
- if (!strcmp(extra_certs_file, INLINE_FILE_TAG) && extra_certs_inline)
+ if (extra_certs_inline)
{
if (!mbed_ok(mbedtls_x509_crt_parse(ctx->crt_chain,
- (const unsigned char *) extra_certs_inline,
- strlen(extra_certs_inline)+1)))
+ (const unsigned char *) extra_certs_file,
+ strlen(extra_certs_file) + 1)))
{
msg(M_FATAL, "Cannot load inline extra-certs file");
}
@@ -932,7 +1021,7 @@ tls_version_to_major_minor(int tls_ver, int *major, int *minor)
void
backend_tls_ctx_reload_crl(struct tls_root_ctx *ctx, const char *crl_file,
- const char *crl_inline)
+ bool crl_inline)
{
ASSERT(crl_file);
@@ -942,10 +1031,11 @@ backend_tls_ctx_reload_crl(struct tls_root_ctx *ctx, const char *crl_file,
}
mbedtls_x509_crl_free(ctx->crl);
- if (!strcmp(crl_file, INLINE_FILE_TAG) && crl_inline)
+ if (crl_inline)
{
if (!mbed_ok(mbedtls_x509_crl_parse(ctx->crl,
- (const unsigned char *)crl_inline, strlen(crl_inline)+1)))
+ (const unsigned char *)crl_file,
+ strlen(crl_file) + 1)))
{
msg(M_WARN, "CRL: cannot parse inline CRL");
goto err;
@@ -967,7 +1057,8 @@ err:
void
key_state_ssl_init(struct key_state_ssl *ks_ssl,
- const struct tls_root_ctx *ssl_ctx, bool is_server, struct tls_session *session)
+ const struct tls_root_ctx *ssl_ctx, bool is_server,
+ struct tls_session *session)
{
ASSERT(NULL != ssl_ctx);
ASSERT(ks_ssl);
@@ -992,6 +1083,11 @@ key_state_ssl_init(struct key_state_ssl *ks_ssl,
mbedtls_ssl_conf_ciphersuites(ks_ssl->ssl_config, ssl_ctx->allowed_ciphers);
}
+ if (ssl_ctx->groups)
+ {
+ mbedtls_ssl_conf_curves(ks_ssl->ssl_config, ssl_ctx->groups);
+ }
+
/* Disable record splitting (for now). OpenVPN assumes records are sent
* unfragmented, and changing that will require thorough review and
* testing. Since OpenVPN is not susceptible to BEAST, we can just
@@ -1012,13 +1108,11 @@ key_state_ssl_init(struct key_state_ssl *ks_ssl,
ssl_ctx->priv_key));
/* Initialise SSL verification */
-#if P2MP_SERVER
if (session->opt->ssl_flags & SSLF_CLIENT_CERT_OPTIONAL)
{
mbedtls_ssl_conf_authmode(ks_ssl->ssl_config, MBEDTLS_SSL_VERIFY_OPTIONAL);
}
else if (!(session->opt->ssl_flags & SSLF_CLIENT_CERT_NOT_REQUIRED))
-#endif
{
mbedtls_ssl_conf_authmode(ks_ssl->ssl_config, MBEDTLS_SSL_VERIFY_REQUIRED);
}
@@ -1059,6 +1153,15 @@ key_state_ssl_init(struct key_state_ssl *ks_ssl,
}
}
+#ifdef HAVE_EXPORT_KEYING_MATERIAL
+ /* Initialize keying material exporter */
+ if (session->opt->ekm_size)
+ {
+ mbedtls_ssl_conf_export_keys_ext_cb(ks_ssl->ssl_config,
+ mbedtls_ssl_export_keys_cb, session);
+ }
+#endif
+
/* Initialise SSL context */
ALLOC_OBJ_CLEAR(ks_ssl->ctx, mbedtls_ssl_context);
mbedtls_ssl_init(ks_ssl->ctx);
@@ -1075,6 +1178,8 @@ key_state_ssl_free(struct key_state_ssl *ks_ssl)
{
if (ks_ssl)
{
+ free(ks_ssl->exported_key_material);
+
if (ks_ssl->ctx)
{
mbedtls_ssl_free(ks_ssl->ctx);
@@ -1421,4 +1526,4 @@ get_ssl_library_version(void)
return mbedtls_version;
}
-#endif /* defined(ENABLE_CRYPTO) && defined(ENABLE_CRYPTO_MBEDTLS) */
+#endif /* defined(ENABLE_CRYPTO_MBEDTLS) */