Use the export keys functionality, to call the public API
`mbedtls_ssl_tls_prf()`, and remove the function
`mbedtls_ssl_get_dtls_srtp_key_material()`.
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
Force using IPv4 in the GNU_CLI SRTP tests, as introduced for
other tests in #1918.
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
1. Check allocation success.
2. Check parameter correctness in the use_srtp extension
in server and client.
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
Add a comment that describes that the feature only supportes the
`use_srtp` extension, and not hte full DTLS-SRTP RFC.
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
Improve readability of the code:
1. move common code to `ssl_internal.h` as `static inline`.
2. Add comments.
3. Use local variables for extension size.
4. Change function signature, by adding buffer size and output length.
5. Take server srtp profile out of the loop.
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
Since `gnutls-cli` resolves `localhost` as an IPv6 address, and the server
is bound to IPv4 address, gnutl-cli fails to negotiate DTLS sessions.
Force the server to bind to IPv6 address, as a workaround.
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
Fix compilation errors when `MBEDTLS_DTLS_SRTP` not set
1. Add file missed in previous commmit.
2. In sample applications, set `DFL_FORCE_SRTP_PROFILE` to 0.
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
1. Add DTLS-SRTP tests in `ssl-opts.sh`
2. Add logs for the tests to filter.
3. Add function to get the profile informations.
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
Set authmode to `MBEDTLS_SSL_VERIFY_REQUIRED` when using dtls-srtp,
in case authmode was not set. This is to support self signed certificates
received by the server, which is the case with webRTC. Certificate fingerprints
are verified outside the dtls stack, as defined in RFC 5763.
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
1. Set correct mki from the `use_srtp` extension.
2. Use mki value received from the client as the mki used by server.
3. Use `mbedtls_ssl_dtls_srtp_set_mki_value()` as a client API only.
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
Add dtls-srtp to `ssl_client2` and `ssl_server2` examples,
for reference and for allowing in tests.
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
Return a debg message that was removed in previous commit,
Whic is searched in the ssl-opts.sh test.
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
Enforce CertificateRequest, client and server Certificates, and
CertificateVerify messages, which are mandatory in DTLS-SRTP,
as defined in RFC 5764 section 4.1
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
