libtpmtss: TSS can optionally return signature schemes supported by a key

diff --git a/src/libtpmtss/tpm_tss.h b/src/libtpmtss/tpm_tss.h
index 11e4a7c157878d4ab676b5b14eeb9abac4f0b924..a239e4dc4770542ccf024e8465e418ef76d541b0 100644 (file)
--- a/src/libtpmtss/tpm_tss.h
+++ b/src/libtpmtss/tpm_tss.h
@@ -1,4 +1,5 @@
 /*
+ * Copyright (C) 2018 Tobias Brunner
  * Copyright (C) 2016 Andreas Steffen
  * HSR Hochschule fuer Technik Rapperswil
  *
@@ -79,6 +80,15 @@ struct tpm_tss_t {
         */
        chunk_t (*get_public)(tpm_tss_t *this, uint32_t handle);
 
+       /**
+        * Return signature schemes supported by the given key (TPM 2.0 only)
+        *
+        * @param handle                key object handle
+        * @return                              enumerator over signature_params_t*
+        */
+       enumerator_t *(*supported_signature_schemes)(tpm_tss_t *this,
+                                                                                                uint32_t handle);
+
        /**
         * Retrieve the current value of a PCR register in a given PCR bank
         *