md: move PSA conversion functions from md_psa.h to psa_util.h
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/include/mbedtls/psa_util.h b/include/mbedtls/psa_util.h
index 5f6a053..249b8d4 100644
--- a/include/mbedtls/psa_util.h
+++ b/include/mbedtls/psa_util.h
@@ -148,6 +148,43 @@
int bits_is_sloppy);
#endif /* PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY */
+/**
+ * \brief This function returns the PSA algorithm identifier
+ * associated with the given digest type.
+ *
+ * \param md_type The type of digest to search for. Must not be NONE.
+ *
+ * \warning If \p md_type is \c MBEDTLS_MD_NONE, this function will
+ * not return \c PSA_ALG_NONE, but an invalid algorithm.
+ *
+ * \warning This function does not check if the algorithm is
+ * supported, it always returns the corresponding identifier.
+ *
+ * \return The PSA algorithm identifier associated with \p md_type,
+ * regardless of whether it is supported or not.
+ */
+static inline psa_algorithm_t mbedtls_md_psa_alg_from_type(mbedtls_md_type_t md_type)
+{
+ return PSA_ALG_CATEGORY_HASH | (psa_algorithm_t) md_type;
+}
+
+/**
+ * \brief This function returns the given digest type
+ * associated with the PSA algorithm identifier.
+ *
+ * \param psa_alg The PSA algorithm identifier to search for.
+ *
+ * \warning This function does not check if the algorithm is
+ * supported, it always returns the corresponding identifier.
+ *
+ * \return The MD type associated with \p psa_alg,
+ * regardless of whether it is supported or not.
+ */
+static inline mbedtls_md_type_t mbedtls_md_type_from_psa_alg(psa_algorithm_t psa_alg)
+{
+ return (mbedtls_md_type_t) (psa_alg & PSA_ALG_HASH_MASK);
+}
+
/**@}*/
#endif /* MBEDTLS_PSA_CRYPTO_C */