put dh_set_pg_dhparam() in own c file

src/pk/dh/dh_set.c

@@ -46,42 +46,6 @@ LBL_ERR:
    return err;
 }
 
-/**
-  Import DH key parts p and g from dhparam
-
-      dhparam data: openssl dhparam -outform DER -out dhparam.der 2048
-
-  @param dhparam    The DH param DER encoded data
-  @param dhparamlen The length of dhparam data
-  @param key        [out] Where the newly created DH key will be stored
-  @return CRYPT_OK if successful, note: on error all allocated memory will be freed automatically.
-*/
-int dh_set_pg_dhparam(const unsigned char *dhparam, unsigned long dhparamlen, dh_key *key)
-{
-   int err;
-
-   LTC_ARGCHK(key         != NULL);
-   LTC_ARGCHK(ltc_mp.name != NULL);
-   LTC_ARGCHK(dhparam     != NULL);
-   LTC_ARGCHK(dhparamlen  > 0);
-
-   if ((err = mp_init_multi(&key->x, &key->y, &key->base, &key->prime, NULL)) != CRYPT_OK) {
-      return err;
-   }
-   if ((err = der_decode_sequence_multi(dhparam, dhparamlen,
-                                        LTC_ASN1_INTEGER, 1UL, key->prime,
-                                        LTC_ASN1_INTEGER, 1UL, key->base,
-                                        LTC_ASN1_EOL,     0UL, NULL)) != CRYPT_OK) {
-      goto LBL_ERR;
-   }
-
-   return CRYPT_OK;
-
-LBL_ERR:
-   dh_free(key);
-   return err;
-}
-
 /**
   Import DH key parts p and g from built-in DH groups
 

src/pk/dh/dh_set_pg_dhparam.c

@@ -0,0 +1,54 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ */
+
+#include "tomcrypt.h"
+
+#ifdef LTC_MDH
+
+/**
+  Import DH key parts p and g from dhparam
+
+      dhparam data: openssl dhparam -outform DER -out dhparam.der 2048
+
+  @param dhparam    The DH param DER encoded data
+  @param dhparamlen The length of dhparam data
+  @param key        [out] Where the newly created DH key will be stored
+  @return CRYPT_OK if successful, note: on error all allocated memory will be freed automatically.
+*/
+int dh_set_pg_dhparam(const unsigned char *dhparam, unsigned long dhparamlen, dh_key *key)
+{
+   int err;
+
+   LTC_ARGCHK(key         != NULL);
+   LTC_ARGCHK(ltc_mp.name != NULL);
+   LTC_ARGCHK(dhparam     != NULL);
+   LTC_ARGCHK(dhparamlen  > 0);
+
+   if ((err = mp_init_multi(&key->x, &key->y, &key->base, &key->prime, NULL)) != CRYPT_OK) {
+      return err;
+   }
+   if ((err = der_decode_sequence_multi(dhparam, dhparamlen,
+                                        LTC_ASN1_INTEGER, 1UL, key->prime,
+                                        LTC_ASN1_INTEGER, 1UL, key->base,
+                                        LTC_ASN1_EOL,     0UL, NULL)) != CRYPT_OK) {
+      goto LBL_ERR;
+   }
+
+   return CRYPT_OK;
+
+LBL_ERR:
+   dh_free(key);
+   return err;
+}
+
+#endif /* LTC_MDH */
+
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */