diff --git a/go.mod b/go.mod
index b66133a4..4bc3a965 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ require (
 	github.com/pkg/errors v0.9.1
 	github.com/urfave/cli v1.22.15
 	github.com/xtaci/kcp-go/v5 v5.6.8
-	github.com/xtaci/qpp v1.0.4
+	github.com/xtaci/qpp v1.1.0
 	github.com/xtaci/smux v1.5.24
 	github.com/xtaci/tcpraw v1.2.25
 	golang.org/x/crypto v0.24.0
diff --git a/go.sum b/go.sum
index 776991ae..e683bbe0 100644
--- a/go.sum
+++ b/go.sum
@@ -71,6 +71,8 @@ github.com/xtaci/qpp v1.0.3 h1:dvbGTlxW2Dqx0TPJo2EIT/RRz0G/atETBks15LXPX24=
 github.com/xtaci/qpp v1.0.3/go.mod h1:dJS3usaXNMbWxZSWCAdxz01UgJcz9wXDkd4BccDY/V0=
 github.com/xtaci/qpp v1.0.4 h1:tIEul2yMdUv+Zk9w3ktZYJ2wOUeeOjmUnABA/zOt7C0=
 github.com/xtaci/qpp v1.0.4/go.mod h1:dJS3usaXNMbWxZSWCAdxz01UgJcz9wXDkd4BccDY/V0=
+github.com/xtaci/qpp v1.1.0 h1:PsIxn2lE2MdbbfNmNeTm1iWKw/k8DI/XkU5brOno5H0=
+github.com/xtaci/qpp v1.1.0/go.mod h1:dJS3usaXNMbWxZSWCAdxz01UgJcz9wXDkd4BccDY/V0=
 github.com/xtaci/smux v1.5.24 h1:77emW9dtnOxxOQ5ltR+8BbsX1kzcOxQ5gB+aaV9hXOY=
 github.com/xtaci/smux v1.5.24/go.mod h1:OMlQbT5vcgl2gb49mFkYo6SMf+zP3rcjcwQz7ZU7IGY=
 github.com/xtaci/tcpraw v1.2.25 h1:VDlqo0op17JeXBM6e2G9ocCNLOJcw9mZbobMbJjo0vk=
diff --git a/vendor/github.com/xtaci/qpp/qpp.go b/vendor/github.com/xtaci/qpp/qpp.go
index 2f9514d6..2c665d9d 100644
--- a/vendor/github.com/xtaci/qpp/qpp.go
+++ b/vendor/github.com/xtaci/qpp/qpp.go
@@ -56,9 +56,10 @@ func (qpp *QuantumPermutationPad) Encrypt(data []byte) {
 	switch qpp.qubits {
 	case NATIVE_BYTE_LENGTH:
 		for i := 0; i < len(data); i++ {
-			index := qpp.encRand.Uint32() % uint32(qpp.numPads)
+			rand := qpp.encRand.Uint32()
+			index := rand % uint32(qpp.numPads)
 			pad := qpp.pads[index]
-			data[i] = pad[data[i]]
+			data[i] = pad[data[i]^byte(rand&0xFF)]
 		}
 	default:
 	}
@@ -69,9 +70,10 @@ func (qpp *QuantumPermutationPad) Decrypt(data []byte) {
 	switch qpp.qubits {
 	case NATIVE_BYTE_LENGTH:
 		for i := 0; i < len(data); i++ {
-			index := qpp.decRand.Uint32() % uint32(qpp.numPads)
+			rand := qpp.encRand.Uint32()
+			index := rand % uint32(qpp.numPads)
 			rpad := qpp.rpads[index]
-			data[i] = rpad[data[i]]
+			data[i] = rpad[data[i]] ^ byte(rand&0xFF)
 		}
 	default:
 	}
@@ -95,9 +97,10 @@ func (qpp *QuantumPermutationPad) EncryptWithPRNG(data []byte, rand *rand.Rand)
 	switch qpp.qubits {
 	case NATIVE_BYTE_LENGTH:
 		for i := 0; i < len(data); i++ {
-			index := rand.Uint32() % uint32(qpp.numPads)
+			rand := rand.Uint32()
+			index := rand % uint32(qpp.numPads)
 			pad := qpp.pads[index]
-			data[i] = pad[data[i]]
+			data[i] = pad[data[i]^byte(rand&0xFF)]
 		}
 	default:
 	}
@@ -110,9 +113,10 @@ func (qpp *QuantumPermutationPad) DecryptWithPRNG(data []byte, rand *rand.Rand)
 	switch qpp.qubits {
 	case NATIVE_BYTE_LENGTH:
 		for i := 0; i < len(data); i++ {
-			index := rand.Uint32() % uint32(qpp.numPads)
+			rand := rand.Uint32()
+			index := rand % uint32(qpp.numPads)
 			rpad := qpp.rpads[index]
-			data[i] = rpad[data[i]]
+			data[i] = rpad[data[i]] ^ byte(rand&0xFF)
 		}
 	default:
 	}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index ea62977f..ccdda511 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -38,7 +38,7 @@ github.com/urfave/cli
 # github.com/xtaci/kcp-go/v5 v5.6.8
 ## explicit; go 1.21
 github.com/xtaci/kcp-go/v5
-# github.com/xtaci/qpp v1.0.4
+# github.com/xtaci/qpp v1.1.0
 ## explicit; go 1.22.3
 github.com/xtaci/qpp
 # github.com/xtaci/smux v1.5.24