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psa: Move from key handle to key identifier

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Move all the PSA crypto APIs using key handles
to use key identifiers but psa_key_open() and
psa_key_close(). This is done without modifying
any test as key handles and key identifiers are
now the same.

Update the library modules using PSA crypto APIs
to get rid of key handles.

Programs and unit tests are updated to not use
key handles in subsequent commits, not in this
one.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
This commit is contained in:
Ronald Cron
2020-08-04 09:51:30 +02:00
parent e4f6d5c5fe
commit cf56a0a320
20 changed files with 445 additions and 415 deletions
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4
docs/proposed/psa-driver-developer-guide.md
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@ -36,10 +36,6 @@ A driver therefore consists of:
Mbed TLS calls driver entry points [as specified in the PSA Cryptography Driver Interface specification](psa-driver-interface.html#driver-entry-points) except as otherwise indicated in this section.
### Key handles
Mbed TLS currently implements the interface for opening and closing persistent keys from version 1.0 beta 3 of the PSA Crypto specification. As a consequence, functions that operate on an existing key take an argument of type `psa_key_handle_t` instead of `psa_key_id_t`. Functions that create a new key take an argument of type `psa_key_handle_t *` instead of `psa_key_id_t *`.
## Building and testing your driver
<!-- TODO -->

4
docs/proposed/psa-driver-interface.md
View File

@ -580,8 +580,8 @@ psa_set_key_type(&attributes, PSA_KEY_TYPE_AES);
psa_set_key_size(&attributes, 128);
psa_set_key_algorithm(&attributes, PSA_ALG_GCM);
psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT);
psa_key_handle_t handle = 0;
psa_generate_key(&attributes, &handle);
psa_key_id_t key;
psa_generate_key(&attributes, &key);
```
## Using opaque drivers from an application