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Update to only serve GCM and CCM

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Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
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Manuel Pégourié-Gonnard 2023-10-12 11:19:00 +02:00
parent 301d2a29a7
commit f1878d8974
1 changed files with 4 additions and 10 deletions
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14
docs/architecture/psa-migration/md-cipher-dispatch.md
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@ -513,9 +513,9 @@ testing, based and what's needed by internal users of Cipher light. The new
config symbol will not be considered public so its definition may change.
Cipher light will be automatically enabled in `build_info.h` by modules that
need it, namely: CTR\_DRBG, CCM, GCM. Note: CCM and GCM currently depend on
the full `CIPHER_C` (enforced by `check_config.h`); this hard dependency would
be replaced by the above auto-enablement.
need it, namely: CCM, GCM. Note: CCM and GCM currently depend on the full
`CIPHER_C` (enforced by `check_config.h`); this hard dependency would be
replaced by the above auto-enablement.
Cipher light includes:
- info functions;
@ -533,27 +533,21 @@ This excludes:
The following API functions, and supporting types, are candidates for
inclusion in the Cipher light API, with limited features as above:
```
mbedtls_cipher_info_from_type
mbedtls_cipher_info_from_values
mbedtls_cipher_info_get_block_size
mbedtls_cipher_init
mbedtls_cipher_setup
mbedtls_cipher_setkey
mbedtls_cipher_crypt
mbedtls_cipher_free
mbedtls_cipher_update
(mbedtls_cipher_finish)
```
Note: `mbedtls_cipher_info_get_block_size()` can be hard-coded to return 16,
as all three supported block ciphers have the same block size (DES was
excluded).
Note: `mbedtls_cipher_finish()` is not required by any of the modules using
Cipher light, but it might be convenient to include it anyway as it's used in
the implementation of `mbedtls_cipher_crypt()`.
#### Cipher light dual dispatch
This is likely to come in the future, but has not been defined yet.