--- /dev/null
+/* 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: $Format:%ai$ */