Merge pull request #8172 from ronald-cron-arm/psa-config-add-comment

Backport 2.28: Add comment about HKDF in config_psa.h
Mbed-TLS · Sep 13, 2023 · 3d9978e · 3d9978e
2 parents fcbcf57 + fa9392a
commit 3d9978e
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/include/mbedtls/config_psa.h b/include/mbedtls/config_psa.h
@@ -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 */