diff --git a/GTProxy.cbp b/GTProxy.cbp
index b1b0531..e1c418c 100644
--- a/GTProxy.cbp
+++ b/GTProxy.cbp
@@ -86,15 +86,15 @@
 			<Option compilerVar="CC" />
 		</Unit>
 		<Unit filename="mainVar.h" />
-		<Unit filename="md5/md5.c">
-			<Option compilerVar="CC" />
-		</Unit>
-		<Unit filename="md5/md5.h" />
 		<Unit filename="packet/packet.c">
 			<Option compilerVar="CC" />
 		</Unit>
 		<Unit filename="packet/packet.h" />
 		<Unit filename="proxyStruct.h" />
+		<Unit filename="sha256/sha256.c">
+			<Option compilerVar="CC" />
+		</Unit>
+		<Unit filename="sha256/sha256.h" />
 		<Unit filename="tlse/tlse.c">
 			<Option compilerVar="CC" />
 		</Unit>
diff --git a/README.md b/README.md
index e4eb9f7..cd9ec59 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,6 @@ Now, you can look all information about GTProxy on [Wiki](https://github.com/Guc
 - [X] Making Custom Command
 # Credits
 - Thanks to all of my friend for helping me a lot of making GTProxy
-- [GTProxy - ZTzTopia](https://github.com/ZTzTopia/GTProxy) Some functions i take it from here (like KLV keys, etc)
 - [ENet - lsalzman](https://github.com/lsalzman/enet) Growtopia Network Library
 - [TLSe - eduardsui](https://github.com/eduardsui/tlse) Single C file TLS 1.2/1.3 implementation
 - [strsplit.c - mr21](https://github.com/mr21/strsplit.c) String Split
diff --git a/build.bat b/build.bat
index edebe9e..f530890 100644
--- a/build.bat
+++ b/build.bat
@@ -1,3 +1,3 @@
 @echo off
-gcc *.c utils/*.c packet/*.c events/*.c enet/*.c tlse/tlse.c md5/md5.c -DTLS_AMALGAMATION -o proxy -lws2_32 -lwinmm -lpthread
+gcc *.c utils/*.c packet/*.c events/*.c enet/*.c tlse/tlse.c sha256/sha256.c -DTLS_AMALGAMATION -o proxy -lws2_32 -lwinmm -lpthread
 proxy
diff --git a/build.sh b/build.sh
index f7f4928..672be00 100644
--- a/build.sh
+++ b/build.sh
@@ -1 +1 @@
-gcc *.c utils/*.c packet/*.c events/*.c enet/*.c tlse/tlse.c md5/*.c -lpthread -o proxy -std=c11
+gcc *.c utils/*.c packet/*.c events/*.c enet/*.c tlse/tlse.c sha256/sha256.c -lpthread -o proxy -std=c11
diff --git a/sha256/sha256.c b/sha256/sha256.c
new file mode 100644
index 0000000..e5422b7
--- /dev/null
+++ b/sha256/sha256.c
@@ -0,0 +1,164 @@
+/*********************************************************************
+* Filename:   sha256.c
+* Author:     Brad Conte (brad AT bradconte.com)
+* Copyright:
+* Disclaimer: This code is presented "as is" without any guarantees.
+* Details:    Implementation of the SHA-256 hashing algorithm.
+              SHA-256 is one of the three algorithms in the SHA2
+              specification. The others, SHA-384 and SHA-512, are not
+              offered in this implementation.
+              Algorithm specification can be found here:
+               * http://csrc.nist.gov/publications/fips/fips180-2/fips180-2withchangenotice.pdf
+              This implementation uses little endian byte order.
+*********************************************************************/
+
+/*************************** HEADER FILES ***************************/
+#include <stdlib.h>
+#include <memory.h>
+#include <string.h>
+
+#include "sha256.h"
+
+/****************************** MACROS ******************************/
+#define ROTLEFT(a,b) (((a) << (b)) | ((a) >> (32-(b))))
+#define ROTRIGHT(a,b) (((a) >> (b)) | ((a) << (32-(b))))
+
+#define CH(x,y,z) (((x) & (y)) ^ (~(x) & (z)))
+#define MAJ(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+#define EP0(x) (ROTRIGHT(x,2) ^ ROTRIGHT(x,13) ^ ROTRIGHT(x,22))
+#define EP1(x) (ROTRIGHT(x,6) ^ ROTRIGHT(x,11) ^ ROTRIGHT(x,25))
+#define SIG0(x) (ROTRIGHT(x,7) ^ ROTRIGHT(x,18) ^ ((x) >> 3))
+#define SIG1(x) (ROTRIGHT(x,17) ^ ROTRIGHT(x,19) ^ ((x) >> 10))
+
+/**************************** VARIABLES *****************************/
+static const WORD k[64] = {
+	0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5,0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5,
+	0xd807aa98,0x12835b01,0x243185be,0x550c7dc3,0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174,
+	0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc,0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da,
+	0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7,0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967,
+	0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13,0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85,
+	0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3,0xd192e819,0xd6990624,0xf40e3585,0x106aa070,
+	0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5,0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3,
+	0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208,0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
+};
+
+/*********************** FUNCTION DEFINITIONS ***********************/
+void sha256Transform(SHA256_CTX *ctx, const BYTE data[])
+{
+	WORD a, b, c, d, e, f, g, h, i, j, t1, t2, m[64];
+
+	for (i = 0, j = 0; i < 16; ++i, j += 4)
+		m[i] = (data[j] << 24) | (data[j + 1] << 16) | (data[j + 2] << 8) | (data[j + 3]);
+	for ( ; i < 64; ++i)
+		m[i] = SIG1(m[i - 2]) + m[i - 7] + SIG0(m[i - 15]) + m[i - 16];
+
+	a = ctx->state[0];
+	b = ctx->state[1];
+	c = ctx->state[2];
+	d = ctx->state[3];
+	e = ctx->state[4];
+	f = ctx->state[5];
+	g = ctx->state[6];
+	h = ctx->state[7];
+
+	for (i = 0; i < 64; ++i) {
+		t1 = h + EP1(e) + CH(e,f,g) + k[i] + m[i];
+		t2 = EP0(a) + MAJ(a,b,c);
+		h = g;
+		g = f;
+		f = e;
+		e = d + t1;
+		d = c;
+		c = b;
+		b = a;
+		a = t1 + t2;
+	}
+
+	ctx->state[0] += a;
+	ctx->state[1] += b;
+	ctx->state[2] += c;
+	ctx->state[3] += d;
+	ctx->state[4] += e;
+	ctx->state[5] += f;
+	ctx->state[6] += g;
+	ctx->state[7] += h;
+}
+
+void sha256Init(SHA256_CTX *ctx)
+{
+	ctx->datalen = 0;
+	ctx->bitlen = 0;
+	ctx->state[0] = 0x6a09e667;
+	ctx->state[1] = 0xbb67ae85;
+	ctx->state[2] = 0x3c6ef372;
+	ctx->state[3] = 0xa54ff53a;
+	ctx->state[4] = 0x510e527f;
+	ctx->state[5] = 0x9b05688c;
+	ctx->state[6] = 0x1f83d9ab;
+	ctx->state[7] = 0x5be0cd19;
+}
+
+void sha256Update(SHA256_CTX *ctx, const BYTE data[], size_t len)
+{
+	WORD i;
+
+	for (i = 0; i < len; ++i) {
+		ctx->data[ctx->datalen] = data[i];
+		ctx->datalen++;
+		if (ctx->datalen == 64) {
+			sha256Transform(ctx, ctx->data);
+			ctx->bitlen += 512;
+			ctx->datalen = 0;
+		}
+	}
+}
+
+void sha256UpdateLen(SHA256_CTX *ctx, const BYTE data[]) {
+	sha256Update(ctx, data, strlen(data));
+}
+
+void sha256Final(SHA256_CTX *ctx, BYTE hash[])
+{
+	WORD i;
+
+	i = ctx->datalen;
+
+	// Pad whatever data is left in the buffer.
+	if (ctx->datalen < 56) {
+		ctx->data[i++] = 0x80;
+		while (i < 56)
+			ctx->data[i++] = 0x00;
+	}
+	else {
+		ctx->data[i++] = 0x80;
+		while (i < 64)
+			ctx->data[i++] = 0x00;
+		sha256Transform(ctx, ctx->data);
+		memset(ctx->data, 0, 56);
+	}
+
+	// Append to the padding the total message's length in bits and transform.
+	ctx->bitlen += ctx->datalen * 8;
+	ctx->data[63] = ctx->bitlen;
+	ctx->data[62] = ctx->bitlen >> 8;
+	ctx->data[61] = ctx->bitlen >> 16;
+	ctx->data[60] = ctx->bitlen >> 24;
+	ctx->data[59] = ctx->bitlen >> 32;
+	ctx->data[58] = ctx->bitlen >> 40;
+	ctx->data[57] = ctx->bitlen >> 48;
+	ctx->data[56] = ctx->bitlen >> 56;
+	sha256Transform(ctx, ctx->data);
+
+	// Since this implementation uses little endian byte ordering and SHA uses big endian,
+	// reverse all the bytes when copying the final state to the output hash.
+	for (i = 0; i < 4; ++i) {
+		hash[i]      = (ctx->state[0] >> (24 - i * 8)) & 0x000000ff;
+		hash[i + 4]  = (ctx->state[1] >> (24 - i * 8)) & 0x000000ff;
+		hash[i + 8]  = (ctx->state[2] >> (24 - i * 8)) & 0x000000ff;
+		hash[i + 12] = (ctx->state[3] >> (24 - i * 8)) & 0x000000ff;
+		hash[i + 16] = (ctx->state[4] >> (24 - i * 8)) & 0x000000ff;
+		hash[i + 20] = (ctx->state[5] >> (24 - i * 8)) & 0x000000ff;
+		hash[i + 24] = (ctx->state[6] >> (24 - i * 8)) & 0x000000ff;
+		hash[i + 28] = (ctx->state[7] >> (24 - i * 8)) & 0x000000ff;
+	}
+}
diff --git a/sha256/sha256.h b/sha256/sha256.h
new file mode 100644
index 0000000..aac5354
--- /dev/null
+++ b/sha256/sha256.h
@@ -0,0 +1,35 @@
+/*********************************************************************
+* Filename:   sha256.h
+* Author:     Brad Conte (brad AT bradconte.com)
+* Copyright:
+* Disclaimer: This code is presented "as is" without any guarantees.
+* Details:    Defines the API for the corresponding SHA1 implementation.
+*********************************************************************/
+
+#ifndef SHA256_H
+#define SHA256_H
+
+/*************************** HEADER FILES ***************************/
+#include <stddef.h>
+
+/****************************** MACROS ******************************/
+#define SHA256_BLOCK_SIZE 32            // SHA256 outputs a 32 byte digest
+
+/**************************** DATA TYPES ****************************/
+typedef unsigned char BYTE;             // 8-bit byte
+typedef unsigned int  WORD;             // 32-bit word, change to "long" for 16-bit machines
+
+typedef struct {
+	BYTE data[64];
+	WORD datalen;
+	unsigned long long bitlen;
+	WORD state[8];
+} SHA256_CTX;
+
+/*********************** FUNCTION DECLARATIONS **********************/
+void sha256Init(SHA256_CTX *ctx);
+void sha256Update(SHA256_CTX *ctx, const BYTE data[], size_t len);
+void sha256UpdateLen(SHA256_CTX *ctx, const BYTE data[]);
+void sha256Final(SHA256_CTX *ctx, BYTE hash[]);
+
+#endif   // SHA256_H
diff --git a/utils/utils.c b/utils/utils.c
index b84ae9e..37f8c2d 100644
--- a/utils/utils.c
+++ b/utils/utils.c
@@ -6,7 +6,7 @@
 #include <stdint.h>
 
 #include "utils.h"
-#include "../md5/md5.h"
+#include "../sha256/sha256.h"
 
 char** strsplit(const char* s, const char* delim, size_t* nb) { // https://github.com/mr21/strsplit.c
     void* data;
@@ -120,16 +120,36 @@ char* generateGID() {
     return result;
 }
 
-char* generateKlv(char* gameVersion, char* hash, char* rid, char* protocol, char isAndroid) {
-    uint8_t md5Data[16];
-    /*if (!isAndroid) md5String(CatchMessage("%s42e2ae20305244ddaf9b0de5e897fc74%sccc18d2e2ca84e0a81ba29a0af2edc9c%s92e9bf1aad214c69b1f3a18a03aae8dc%s58b92130c89c496b96164b776d956242", gameVersion, protocol, hash, rid), md5Data);
-    else*/ md5String(CatchMessage("%s13c93f386db9da3e00dda16d770b0c83%s6b1c01f9128a62a2c97b1a0da4612168%s3402d278d8519a522c94d122e98e2e49%sba95613bc0fd94a9d89c5919670e7d5d", gameVersion, protocol, hash, rid), md5Data);
-    char* result = malloc(33);
-    for (int a = 0, b = 0; a < 16; a++) {
-        sprintf(result + b, "%02X", md5Data[a]);
+char* sha256Gen(char* data) {
+    char* result = malloc(65); // 32 + 1
+    BYTE sha256res[32];
+    SHA256_CTX ctx;
+    sha256Init(&ctx);
+    sha256UpdateLen(&ctx, data);
+    sha256Final(&ctx, sha256res);
+
+    for (int a = 0, b = 0; a < 32; a++) {
+        sprintf(result + b, "%02x", sha256res[a]);
         b += 2;
     }
-    result[32] = '\0';
+    result[64] = '\0';
+
+    return result;
+}
+
+char* generateKlv(char* gameVersion, char* hash, char* rid, char* protocol, char isAndroid) {
+    char* gameVersion_sha256 = sha256Gen(gameVersion);
+    char* hash_sha256 = sha256Gen(hash);
+    char* protocol_sha256 = sha256Gen(protocol);
+    char* rid_sha256 = sha256Gen(rid);
+
+    char* result = sha256Gen(CatchMessage("%s198c4213effdbeb93ca64ea73c1f505f%s82a2e2940dd1b100f0d41d23b0bb6e4d%sc64f7f09cdd0c682e730d2f936f36ac2%s27d8da6190880ce95591215f2c9976a6", gameVersion_sha256, hash_sha256, protocol_sha256, rid_sha256));
+
+    free(gameVersion_sha256);
+    free(hash_sha256);
+    free(protocol_sha256);
+    free(rid_sha256);
+
     return result;
 }