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-rw-r--r--src/lib/pk_pad/emsa.h13
1 files changed, 12 insertions, 1 deletions
diff --git a/src/lib/pk_pad/emsa.h b/src/lib/pk_pad/emsa.h
index d4fd146da..f4697d100 100644
--- a/src/lib/pk_pad/emsa.h
+++ b/src/lib/pk_pad/emsa.h
@@ -59,16 +59,27 @@ class BOTAN_DLL EMSA
size_t key_bits) = 0;
virtual ~EMSA();
+
+ virtual EMSA* clone() = 0;
};
/**
* Factory method for EMSA (message-encoding methods for signatures
* with appendix) objects
-* @param algo_spec the name of the EME to create
+* @param algo_spec the name of the EMSA to create
* @return pointer to newly allocated object of that type
*/
BOTAN_DLL EMSA* get_emsa(const std::string& algo_spec);
+/**
+* Returns the hash function used in the given EMSA scheme
+* If the hash function is not specified or not understood,
+* returns "SHA-512"
+* @param algo_spec the name of the EMSA
+* @return hash function used in the given EMSA scheme
+*/
+BOTAN_DLL std::string hash_for_emsa(const std::string& algo_spec);
+
}
#endif