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Author SHA1 Message Date
Hanno Becker
f2ed4482d7 Add CID field to internal structure representing TLS records 
This commit adds a static array `cid` to the internal structure
`mbedtls_record` representing encrypted and decrypted TLS records.

The expected evolution of state of this field is as follows:
- When handling an incoming record, the caller of `mbedtls_decrypt_buf()`
  has to make sure the CID array field in `mbedtls_record` has been
  properly set. Concretely, it will be copied from the CID from the record
  header during record parsing.
- During decryption in `mbedtls_decrypt_buf()`, the transforms
  incoming CID is compared to the CID in the `mbedtls_record`
  structure representing the record to be decrypted.
- For an outgoing TLS record, the caller of `mbedtls_encrypt_buf()`
  clears the CID in the `mbedtls_record` structure.
- During encryption in `mbedtls_encrypt_buf()`, the CID field in
  `mbedtls_record` will be copied from the out-CID in the transform.
 2019-06-03 14:47:36 +01:00
Hanno Becker
1c1f046804 Replace 'ingoing' -> 'incoming' in CID debug messages 2019-06-03 14:43:16 +01:00
Hanno Becker
c5f2422116 Document behaviour of mbedtls_ssl_get_peer_cid() for empty CIDs 2019-06-03 14:43:16 +01:00
Hanno Becker
5a29990367 Improve structure of client-side CID extension parsing 
Group configuring CID values together.
 2019-06-03 14:43:16 +01:00
Hanno Becker
2262648b69 Improve debugging output of client-side CID extension parsing 2019-06-03 14:43:16 +01:00
Hanno Becker
08556bf8fb Improve structure of ssl_parse_cid_ext() 
Group configuring CID values together.
 2019-06-03 14:43:16 +01:00
Hanno Becker
064b732d11 Use unused extension ID as tentative ID for CID extension 2019-06-03 14:43:16 +01:00
Hanno Becker
554b6ea30a Correct compile-time guard around unhexify() in ssl_server2 2019-06-03 14:43:16 +01:00
Hanno Becker
a34ff5b9a2 Correct compile-time guard around CID extension writing func on srv 2019-06-03 14:43:16 +01:00
Hanno Becker
b7ee0cf3f9 Make integer truncation explicit in mbedtls_ssl_set_cid() 2019-06-03 14:43:16 +01:00
Hanno Becker
fcffdccb85 Grep for dbug msgs witnessing use of CID in ssl_client2/ssl_server2 2019-06-03 14:43:16 +01:00
Hanno Becker
dec2552a92 Change formating of CID debug output in ssl_client2/ssl_server2 2019-06-03 14:43:16 +01:00
Hanno Becker
b1f89cd602 Implement mbedtls_ssl_get_peer_cid() 2019-06-03 14:43:16 +01:00
Hanno Becker
9ecb6c676c Grep for dbg msg witnessing copying of CIDs to SSL transform 2019-06-03 14:43:16 +01:00
Hanno Becker
4bf7465840 Copy CIDs into SSL transform if use of CID has been negotiated 2019-06-03 14:43:16 +01:00
Hanno Becker
1327fa7d14 Add fields holding in/out CIDs to SSL record transformation struct 
These will be copied from the CID fields in mbedtls_ssl_handshake_params
(outgoing CID) and mbedtls_ssl_context (incoming CID) when the transformation
is set up at the end of the handshake.
 2019-06-03 14:43:16 +01:00
Hanno Becker
a6a4c7623c Grep for dbg msg witnessing parsing of CID extension in ServerHello 2019-06-03 14:43:16 +01:00
Hanno Becker
a8373a11c0 Implement parsing of CID extension in ServerHello 2019-06-03 14:43:16 +01:00
Hanno Becker
4bc9e9d3f6 Grep for dbg msg witnessing writing of CID extension in ServerHello 2019-06-03 14:43:16 +01:00
Hanno Becker
51de2d3f69 Implement writing of CID extension in ServerHello 2019-06-03 14:43:16 +01:00
Hanno Becker
7dee2c6369 Grep for dbg msg witnessing parsing of CID extension in ClientHello 2019-06-03 14:43:16 +01:00
Hanno Becker
89dcc881d4 Implement parsing of CID extension in ClientHello 2019-06-03 14:43:16 +01:00
Hanno Becker
6b78c83829 Grep for dbg msg witnessing writing of CID extension in ClientHello 2019-06-03 14:43:16 +01:00
Hanno Becker
49770ffd93 Implement writing of CID extension in ClientHello 2019-06-03 14:43:16 +01:00
Hanno Becker
189a01309f Check static bounds of CID lengths in check_config.h 2019-06-03 14:43:16 +01:00
Hanno Becker
0652bc50c7 Add identifier for CID extension 
Note: The current draft

   https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-04

does not yet specify the extension value, so we
use a temporary value of 42.
 2019-06-03 14:43:16 +01:00
Hanno Becker
f157a97b75 Modify CID tests in ssl-opt.sh to grep for CID config debug msgs 2019-06-03 14:43:16 +01:00
Hanno Becker
ca092246a7 Allow configuring own CID fields through mbedtls_ssl_get_peer_cid() 2019-06-03 14:43:16 +01:00
Hanno Becker
2f28c1031f Add fields to SSL structures describing state and config of CID ext 
* mbedtls_ssl_context gets fields indicating whether the CID extension
  should be negotiated in the next handshake, and, if yes, which CID
  the user wishes the peer to use.

  This information does not belong to mbedtls_ssl_handshake_params
  because (a) it is configured prior to the handshake, and (b) it
  applies to all subsequent handshakes.

* mbedtls_ssl_handshake_params gets fields indicating the state of CID
  negotiation during the handshake. Specifically, it indicates if the
  use of the CID extension has been negotiated, and if so, which CID
  the peer wishes us to use for outgoing messages.
 2019-06-03 14:43:16 +01:00
Hanno Becker
35c36a6760 Guard CID implementations by MBEDTLS_SSL_CID 2019-06-03 14:42:08 +01:00
Hanno Becker
5f925be378 Indicate ssl-opt.sh CID tests only test the stub CID code 2019-06-03 14:42:08 +01:00
Hanno Becker
f1f9a82320 Add warnings about status of implementation of CID API 2019-06-03 14:42:08 +01:00
Hanno Becker
9bae30d00d Fix use of requires_config_enabled in ssl-opt.sh 
requires_config_enabled doesn't support multiple config options.
Tests having multiple configuration dependencies must be prefixed
with multiple invocations of requires_config_enabled instead.
 2019-06-03 14:42:08 +01:00
Hanno Becker
d029a2b57f Fix typo in CID test in ssl-opt.sh 2019-06-03 14:42:08 +01:00
Hanno Becker
957dd921f1 Print peer CID from ssl_client2 2019-06-03 14:42:08 +01:00
Hanno Becker
735c716e2a Print peer CID from ssl_server2 2019-06-03 14:42:08 +01:00
Hanno Becker
982182f342 Improve wording of CID debug msg in ssl_server2 example application 2019-06-03 14:42:08 +01:00
Hanno Becker
4f664cbb5c Clarify that mbedtls_ssl_set_cid() applies to all subsequent HSs 2019-06-03 14:42:08 +01:00
Hanno Becker
318a87b336 Document that the use of CID is disabled by default. 
(Even if MBEDTLS_SSL_CID is set in config.h)
 2019-06-03 14:42:08 +01:00
Hanno Becker
9742809531 Reference CID Draft in Connection ID documentation in config.h 2019-06-03 14:42:08 +01:00
Hanno Becker
7cf463e3cc Add basic Connection ID tests to ssl-opt.sh 2019-06-03 14:42:08 +01:00
Hanno Becker
a7d2542248 ssl_server2: Add cmd line options to configure use of CID extension 2019-06-03 14:42:08 +01:00
Hanno Becker
90cb359cf0 ssl_client2: Add cmd line options to configure use of CID extension 2019-06-03 14:42:08 +01:00
Hanno Becker
1f583eecd8 ssl_client2: Add helper to unhexify binary command line data 2019-06-03 14:42:08 +01:00
Hanno Becker
f8542cf620 Add dummy implementations for CID API 2019-06-03 14:42:08 +01:00
Hanno Becker
f8c10269d1 Update version_features.c 2019-06-03 14:42:08 +01:00
Hanno Becker
ebafe8b7cc Update query_config.c 2019-06-03 14:42:08 +01:00
Hanno Becker
bb47cd906f Add dep of MBEDTLS_SSL_CID on MBEDTLS_SSL_PROTO_DTLS to config check 2019-06-03 14:42:08 +01:00
Hanno Becker
019f4b58de Add API for the use of the DTLS Connection ID extension 2019-06-03 14:42:08 +01:00
Hanno Becker
2234e650f7 Add new configuration option controlling CID extension 2019-06-03 14:42:08 +01:00