Commit Graph

9 Commits

Author SHA1 Message Date
Hanno Becker
939bb4d8f6 Initialize TLS 1.3 label prefix with string literal
This is in line with how the entries of the TLS 1.3 label
structure `mbedtls_ssl_tls1_3_labels` are initialized.

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
2020-09-08 10:48:55 +01:00
Hanno Becker
9cb0a146f1 Remove duplicated computation of TLS 1.3 HKDF label length
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
2020-09-08 10:48:14 +01:00
Hanno Becker
e4435ea777 Introduce TLS 1.3 labels in a single place
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
2020-09-08 10:43:52 +01:00
Hanno Becker
1981cb2972 Use uniform naming for TLS 1.3 label fields
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
2020-09-08 10:36:29 +01:00
Hanno Becker
58c5cea73b Include common.h from ssl_tls13_keys.c
`common.h` takes care of the logic of chosing the correct
configuration file, so we don't need to replicate it in
each source file.

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
2020-09-08 10:31:33 +01:00
Hanno Becker
e9cccb440c Implement TLS 1.3 key evolution function
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
2020-09-08 10:28:28 +01:00
Hanno Becker
b35d52240b Implement TLS 1.3 key derivation function Derive-Secret
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
2020-09-08 10:28:28 +01:00
Hanno Becker
3385a4d5cf Implement TLS 1.3 traffic key generation
See the documentation in library/ssl_tls13_keys.h.

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
2020-09-08 10:28:28 +01:00
Hanno Becker
be9d6648f8 Implement TLS 1.3 key derivation function HKDF-Expand-Label
This commit introduces a new file library/ssl_tls13_key.c
which will subsequently be populated with functionality relating
to the TLS 1.3 key schedule.

Those functions are expected to be internal and are documented
in the internal header library/ssl_tls13_keys.h.

The first function to be implemented is the key expansion
function `HKDF-Expand-Label`. See the documentation in
library/ssl_tls13_keys.h for more information.

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
2020-09-08 10:28:06 +01:00