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Backport 2.28: Add comment about HKDF in config_psa.h #8172

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Sep 13, 2023
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Backport 2.28: Add comment about HKDF in config_psa.h #8172

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4 changes: 4 additions & 0 deletions include/mbedtls/config_psa.h
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Original file line number Diff line number Diff line change
Expand Up @@ -110,6 +110,10 @@ extern "C" {

#if defined(PSA_WANT_ALG_HKDF)
#if !defined(MBEDTLS_PSA_ACCEL_ALG_HKDF)
/*
* The PSA implementation has its own implementation of HKDF, separate from
* hkdf.c. No need to enable MBEDTLS_HKDF_C here.
*/
#define MBEDTLS_PSA_BUILTIN_ALG_HMAC 1
#define MBEDTLS_PSA_BUILTIN_ALG_HKDF 1
#endif /* !MBEDTLS_PSA_ACCEL_ALG_HKDF */
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