get util tests to pass

src/util/Makefile.am

@@ -78,6 +78,7 @@ libtalerutil_la_SOURCES = \
   auditor_signatures.c \
   config.c \
   crypto.c \
+  crypto_helper_common.c \
   crypto_helper_denom.c \
   crypto_helper_esign.c \
   crypto_wire.c \

src/util/crypto_helper_denom.c

@@ -498,6 +498,7 @@ more:
           }
           *ec = TALER_EC_NONE;
           finished = true;
+          ds.cipher = TALER_DENOMINATION_RSA;
           ds.details.blinded_rsa_signature = rsa_signature;
           break;
         }