diff --git a/pattern.c b/pattern.c
index 97b0576..5eb67b4 100644
--- a/pattern.c
+++ b/pattern.c
@@ -34,7 +34,7 @@
 #include "pattern.h"
 #include "util.h"
 #include "avl.h"
-
+#include "streebog.h"
 
 /*
  * Common code for execution helper
@@ -270,7 +270,7 @@ vg_exec_context_calc_address(vg_exec_context_t *vxcp)
 {
 	EC_POINT *pubkey;
 	const EC_GROUP *pgroup;
-	unsigned char eckey_buf[96], hash1[32], hash2[20];
+	unsigned char eckey_buf[96], hash1[32], hash2[20], hash3[64];
 	int len;
 
 	vg_exec_context_consolidate_key(vxcp);
@@ -290,8 +290,16 @@ vg_exec_context_calc_address(vg_exec_context_t *vxcp)
 				 eckey_buf,
 				 sizeof(eckey_buf),
 				 vxcp->vxc_bnctx);
-	SHA256(eckey_buf, len, hash1);
-	RIPEMD160(hash1, sizeof(hash1), hash2);
+	if (vxcp->vxc_vc->vc_pubkeytype == 38) // gostcoin	
+	{
+		sph_gost512 (hash3, eckey_buf, len);
+		RIPEMD160(hash3, 64, hash2);		
+	}
+	else
+	{	
+		SHA256(eckey_buf, len, hash1);
+		RIPEMD160(hash1, sizeof(hash1), hash2);
+	}
 	memcpy(&vxcp->vxc_binres[1],
 	       hash2, 20);
 	EC_POINT_free(pubkey);
diff --git a/util.c b/util.c
index 9702871..397ea66 100644
--- a/util.c
+++ b/util.c
@@ -247,7 +247,7 @@ vg_encode_address(const EC_POINT *ppoint, const EC_GROUP *pgroup,
 {
 	unsigned char eckey_buf[128], *pend;
 	unsigned char binres[21] = {0,};
-	unsigned char hash1[32];
+	unsigned char hash1[32], hash2[64];
 
 	pend = eckey_buf;
 
@@ -259,8 +259,16 @@ vg_encode_address(const EC_POINT *ppoint, const EC_GROUP *pgroup,
 			   NULL);
 	pend = eckey_buf + 0x41;
 	binres[0] = addrtype;
-	SHA256(eckey_buf, pend - eckey_buf, hash1);
-	RIPEMD160(hash1, sizeof(hash1), &binres[1]);
+	if (addrtype == 38)
+	{
+		sph_gost512 (hash2, eckey_buf, pend - eckey_buf);
+		RIPEMD160(hash2, 64, &binres[1]);
+	}
+	else
+	{
+		SHA256(eckey_buf, pend - eckey_buf, hash1);
+		RIPEMD160(hash1, sizeof(hash1), &binres[1]);
+	}
 
 	vg_b58_encode_check(binres, sizeof(binres), result, addrtype == 38);
 }
@@ -287,6 +295,7 @@ vg_encode_script_address(const EC_POINT *ppoint, const EC_GROUP *pgroup,
 			   65,
 			   NULL);
 	binres[0] = addrtype;
+	// TODO
 	SHA256(script_buf, 69, hash1);
 	RIPEMD160(hash1, sizeof(hash1), &binres[1]);
 
diff --git a/vanitygen.c b/vanitygen.c
index 7bedb85..887234b 100644
--- a/vanitygen.c
+++ b/vanitygen.c
@@ -31,6 +31,7 @@
 
 #include "pattern.h"
 #include "util.h"
+#include "streebog.h"
 
 const char *version = VANITYGEN_VERSION;
 
@@ -44,7 +45,7 @@ vg_thread_loop(void *arg)
 {
 	unsigned char hash_buf[128];
 	unsigned char *eckey_buf;
-	unsigned char hash1[32];
+	unsigned char hash1[32], hash2[64];
 
 	int i, c, len, output_interval;
 	int hash_len;
@@ -200,8 +201,16 @@ vg_thread_loop(void *arg)
 						 vxcp->vxc_bnctx);
 			assert(len == 65);
 
-			SHA256(hash_buf, hash_len, hash1);
-			RIPEMD160(hash1, sizeof(hash1), &vxcp->vxc_binres[1]);
+			if (vcp->vc_pubkeytype == 38) // gostcoin	
+			{
+				sph_gost512 (hash2, hash_buf, hash_len);
+				RIPEMD160(hash2, 64, &vxcp->vxc_binres[1]);
+			}
+			else
+			{
+				SHA256(hash_buf, hash_len, hash1);
+				RIPEMD160(hash1, sizeof(hash1), &vxcp->vxc_binres[1]);
+			}
 
 			switch (test_func(vxcp)) {
 			case 1: