gnutls-3.8.1

[Bruce Dubbs]

New point version.

[Bruce Dubbs]

• Version 3.8.1 (released 2023-08-03)

libgnutls: ClientHello extensions are randomized by default

To make fingerprinting harder, TLS extensions in ClientHello messages are shuffled. As this behavior may cause compatibility issue with legacy applications that do not accept the last extension without payload, the behavior can be reverted with the %NO_SHUFFLE_EXTENSIONS priority keyword.

libgnutls: Add support for RFC 9258 external PSK importer.

This enables to deploy the same PSK across multiple TLS versions (TLS 1.2 and TLS 1.3) in a secure manner. To use, the application needs to set up a callback that formats the PSK identity using gnutls_psk_format_imported_identity().

libgnutls: %GNUTLS_NO_EXTENSIONS has been renamed to

%GNUTLS_NO_DEFAULT_EXTENSIONS.

libgnutls: Add additional PBKDF limit checks in FIPS mode as

defined in SP 800-132. Minimum salt length is 128 bits and minimum iterations bound is 1000 for PBKDF in FIPS mode.

libgnutls: Add a mechanism to control whether to enforce extended

master secret (RFC 7627). FIPS 140-3 mandates the use of TLS session hash (extended master secret, EMS) in TLS 1.2. To enforce this, a new priority keyword %FORCE_SESSION_HASH is added and if it is set and EMS is not set, the peer aborts the connection. This behavior is the default in FIPS mode, though it can be overridden through the configuration file with the "tls-session-hash" option. In either case non-EMS PRF is reported as a non-approved operation through the FIPS service indicator.

New option --attime to specify current time.

To make testing with different timestamp to the system easier, the tools doing certificate verification now provide a new option --attime, which takes an arbitrary time.

API and ABI modifications:

gnutls_psk_client_credentials_function3: New typedef
gnutls_psk_server_credentials_function3: New typedef
gnutls_psk_set_server_credentials_function3: New function
gnutls_psk_set_client_credentials_function3: New function
gnutls_psk_format_imported_identity: New function
GNUTLS_PSK_KEY_EXT: New enum member of gnutls_psk_key_flags

[Bruce Dubbs]

Fixed at commits

b67111c8a4 Update to unrar-6.2.10.
54b02d4959 Update to SDL2-2.28.2.
d5db88ea9f Update to gnutls-3.8.1.