diff options
| author | Raymond Mao <[email protected]> | 2024-12-24 08:01:07 -0800 |
|---|---|---|
| committer | Ilias Apalodimas <[email protected]> | 2025-01-07 15:45:51 +0200 |
| commit | 27891e85f3cb3912c737bf36276f830d9d02d6c8 (patch) | |
| tree | 74f3c92e706c49b75f905a8f71ae7460c79d0240 /include | |
| parent | 9f9797aaa8d4ea22a682e6cd28a9b3e5638d132f (diff) | |
tpm: add flag in hash_algo_list and API to check if algorithm is supported
Add a bool var into hash_algo_list to indicate whether the algorithm
is supported or not and move the IS_ENABLED to only cover this var.
So that we can have the name, hash, mask and size no matter the
digest kconfigs are enabled or not.
In before, tpm2_algorithm_to_len() and tcg2_algorithm_to_mask() are used to
identify an unsupported algorithm when they return 0.
It is not the case now when hash_algo_list always provides algorithm size
and mask, thus a new API is introduced to check if an algorithm is
supported by U-Boot.
Suggested-by: Ilias Apalodimas <[email protected]>
Signed-off-by: Raymond Mao <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
Signed-off-by: Ilias Apalodimas <[email protected]>
Diffstat (limited to 'include')
| -rw-r--r-- | include/tpm-v2.h | 37 |
1 files changed, 29 insertions, 8 deletions
diff --git a/include/tpm-v2.h b/include/tpm-v2.h index 87b2c614ad2..c49eadda26c 100644 --- a/include/tpm-v2.h +++ b/include/tpm-v2.h @@ -268,6 +268,7 @@ struct digest_info { u16 hash_alg; u32 hash_mask; u16 hash_len; + bool supported; }; /* Algorithm Registry */ @@ -278,38 +279,50 @@ struct digest_info { #define TCG2_BOOT_HASH_ALG_SM3_256 0x00000010 static const struct digest_info hash_algo_list[] = { -#if IS_ENABLED(CONFIG_SHA1) { "sha1", TPM2_ALG_SHA1, TCG2_BOOT_HASH_ALG_SHA1, TPM2_SHA1_DIGEST_SIZE, - }, +#if IS_ENABLED(CONFIG_SHA1) + true, +#else + false, #endif -#if IS_ENABLED(CONFIG_SHA256) + }, { "sha256", TPM2_ALG_SHA256, TCG2_BOOT_HASH_ALG_SHA256, TPM2_SHA256_DIGEST_SIZE, - }, +#if IS_ENABLED(CONFIG_SHA256) + true, +#else + false, #endif -#if IS_ENABLED(CONFIG_SHA384) + }, { "sha384", TPM2_ALG_SHA384, TCG2_BOOT_HASH_ALG_SHA384, TPM2_SHA384_DIGEST_SIZE, - }, +#if IS_ENABLED(CONFIG_SHA384) + true, +#else + false, #endif -#if IS_ENABLED(CONFIG_SHA512) + }, { "sha512", TPM2_ALG_SHA512, TCG2_BOOT_HASH_ALG_SHA512, TPM2_SHA512_DIGEST_SIZE, - }, +#if IS_ENABLED(CONFIG_SHA512) + true, +#else + false, #endif + }, }; /* NV index attributes */ @@ -705,6 +718,14 @@ enum tpm2_algorithms tpm2_name_to_algorithm(const char *name); const char *tpm2_algorithm_name(enum tpm2_algorithms); /** + * tpm2_algorithm_supported() - Check if the algorithm supported by U-Boot + * + * @algorithm_id: algorithm defined in enum tpm2_algorithms + * Return: true if supported, otherwise false + */ +bool tpm2_algorithm_supported(enum tpm2_algorithms algo); + +/** * tpm2_algorithm_to_len() - Return an algorithm length for supported algorithm id * * @algorithm_id: algorithm defined in enum tpm2_algorithms |