pk: wrap curve_id before passing it to PSA
Add a helper function in PSA utils
diff --git a/include/mbedtls/psa_util.h b/include/mbedtls/psa_util.h
index f17e6af..435aca8 100644
--- a/include/mbedtls/psa_util.h
+++ b/include/mbedtls/psa_util.h
@@ -244,6 +244,19 @@
}
}
+/* Translations for ECC */
+
+/* This function transforms an ECC group identifier from
+ * https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-8
+ * into a PSA ECC group identifier. */
+static inline psa_ecc_curve_t mbedtls_psa_parse_tls_ecc_group(
+ uint16_t tls_ecc_grp_reg_id )
+{
+ /* The PSA identifiers are currently aligned with those from
+ * the TLS Supported Groups registry, so no conversion is necessary. */
+ return( (psa_ecc_curve_t) tls_ecc_grp_reg_id );
+}
+
#endif /* MBEDTLS_USE_PSA_CRYPTO */
#endif /* MBEDTLS_PSA_UTIL_H */