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Specify the order of PBKDF2 inputs

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Might make the implementer's life a bit simpler, and is not a big
constraint on applications.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
This commit is contained in:
Manuel Pégourié-Gonnard 2021-04-30 12:42:36 +02:00
parent 421390f52f
commit 3d72267db5
1 changed files with 4 additions and 3 deletions
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7
include/psa/crypto_values.h
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@ -1737,14 +1737,15 @@
* For example, `PSA_ALG_PBKDF2_HMAC(PSA_ALG_SHA256)` specifies PBKDF2
* using the PRF HMAC-SHA-256.
*
* This key derivation algorithm uses the following inputs:
* - #PSA_KEY_DERIVATION_INPUT_PASSWORD is the password to be hashed.
* This key derivation algorithm uses the following inputs, which must be
* provided in the following order:
* - #PSA_KEY_DERIVATION_INPUT_COST is the iteration count.
* This input step must be used exactly once.
* - #PSA_KEY_DERIVATION_INPUT_SALT is the salt.
* This input step must be used one or more times; if used several times, the
* inputs will be concatenated. This can be used to build the final salt
* from multiple sources, both public and secret (also known as pepper).
* - #PSA_KEY_DERIVATION_INPUT_COST is the iteration count.
* - #PSA_KEY_DERIVATION_INPUT_PASSWORD is the password to be hashed.
* This input step must be used exactly once.
*
* \param hash_alg A hash algorithm (\c PSA_ALG_XXX value such that