#ifdef HAVE_NETTLE
 #include <nettle/md5.h>
+#include <nettle/ripemd160.h>
 #include <nettle/sha.h>
 #else
 #include "md5.h"
        size_t siglen, unhashedlen;
        struct sha1_ctx sha1_context;
        struct md5_ctx md5_context;
+#ifdef NETTLE_WITH_RIPEMD160
+       struct ripemd160_ctx ripemd160_context;
+#endif
 #ifdef NETTLE_WITH_SHA224
        struct sha224_ctx sha224_context;
 #endif
                }
                sha1_digest(&sha1_context, 20, hash);
                break;
+       case OPENPGP_HASH_RIPEMD160:
+#ifdef NETTLE_WITH_RIPEMD160
+               ripemd160_init(&ripemd160_context);
+               for (i = 0; i < chunks; i++) {
+                       ripemd160_update(&ripemd160_context, hashlen[i],
+                               hashdata[i]);
+               }
+               ripemd160_digest(&ripemd160_context, RIPEMD160_DIGEST_SIZE,
+                       hash);
+#else
+               logthing(LOGTHING_INFO, "RIPEMD160 support not available.");
+               return -1;
+#endif
        case OPENPGP_HASH_SHA224:
 #ifdef NETTLE_WITH_SHA224
                sha224_init(&sha224_context);