go/examples-cgo/mpinfull.go - incubator-milagro-crypto - Git at Google

 /*
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file
 distributed with this work for additional information
 regarding copyright ownership.  The ASF licenses this file
 to you under the Apache License, Version 2.0 (the
 "License"); you may not use this file except in compliance
 with the License.  You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing,
 software distributed under the License is distributed on an
 "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 KIND, either express or implied.  See the License for the
 specific language governing permissions and limitations
 under the License.
 */

 package main

 import (
 	"encoding/hex"
 	"fmt"

 	amclcgo "git.apache.org/incubator-milagro-crypto.git/go/amcl-cgo"
 	amclgo "git.apache.org/incubator-milagro-crypto.git/go/amcl-go"
 )

 func main() {
 	// Assign the End-User an ID
 	IDstr := "testUser@miracl.com"
 	ID := []byte(IDstr)
 	fmt.Printf("ID: ")
 	amclcgo.MPIN_printBinary(ID)
 	fmt.Printf("\n")

 	// Epoch time in days
 	date := amclcgo.MPIN_today()

 	// Epoch time in seconds
 	timeValue := amclcgo.MPIN_GET_TIME()

 	// PIN variable to create token
 	PIN1 := -1
 	// PIN variable to authenticate
 	PIN2 := -1

 	// Seed value for Random Number Generator (RNG)
 	seedHex := "9e8b4178790cd57a5761c4a6f164ba72"
 	seed, err := hex.DecodeString(seedHex)
 	if err != nil {
 		fmt.Println("Error decoding seed value")
 		return
 	}
 	rng := amclgo.NewRAND()
 	rng.Seed(len(seed), seed)

 	// Message to sign
 	var MESSAGE []byte
 	// MESSAGE := []byte("test sign message")

 	// Generate Master Secret Share 1
 	rtn, MS1 := amclcgo.MPIN_RANDOM_GENERATE_WRAP(rng)
 	if rtn != 0 {
 		fmt.Println("MPIN_RANDOM_GENERATE Error:", rtn)
 		return
 	}
 	fmt.Printf("MS1: 0x")
 	amclcgo.MPIN_printBinary(MS1[:])

 	// Generate Master Secret Share 2
 	rtn, MS2 := amclcgo.MPIN_RANDOM_GENERATE_WRAP(rng)
 	if rtn != 0 {
 		fmt.Println("MPIN_RANDOM_GENERATE Error:", rtn)
 		return
 	}
 	fmt.Printf("MS2: 0x")
 	amclcgo.MPIN_printBinary(MS2[:])

 	// Either Client or TA calculates Hash(ID)
 	HCID := amclcgo.MPIN_HASH_ID(ID)

 	// Generate server secret share 1
 	rtn, SS1 := amclcgo.MPIN_GET_SERVER_SECRET_WRAP(MS1[:])
 	if rtn != 0 {
 		fmt.Println("MPIN_GET_SERVER_SECRET Error:", rtn)
 		return
 	}
 	fmt.Printf("SS1: 0x")
 	amclcgo.MPIN_printBinary(SS1[:])

 	// Generate server secret share 2
 	rtn, SS2 := amclcgo.MPIN_GET_SERVER_SECRET_WRAP(MS2[:])
 	if rtn != 0 {
 		fmt.Println("MPIN_GET_SERVER_SECRET Error:", rtn)
 		return
 	}
 	fmt.Printf("SS2: 0x")
 	amclcgo.MPIN_printBinary(SS2[:])

 	// Combine server secret shares
 	rtn, SS := amclcgo.MPIN_RECOMBINE_G2_WRAP(SS1[:], SS2[:])
 	if rtn != 0 {
 		fmt.Println("MPIN_RECOMBINE_G2(SS1, SS2) Error:", rtn)
 		return
 	}
 	fmt.Printf("SS: 0x")
 	amclcgo.MPIN_printBinary(SS[:])

 	// Generate client secret share 1
 	rtn, CS1 := amclcgo.MPIN_GET_CLIENT_SECRET_WRAP(MS1[:], HCID)
 	if rtn != 0 {
 		fmt.Println("MPIN_GET_CLIENT_SECRET Error:", rtn)
 		return
 	}
 	fmt.Printf("Client Secret Share CS1: 0x")
 	amclcgo.MPIN_printBinary(CS1[:])

 	// Generate client secret share 2
 	rtn, CS2 := amclcgo.MPIN_GET_CLIENT_SECRET_WRAP(MS2[:], HCID)
 	if rtn != 0 {
 		fmt.Println("MPIN_GET_CLIENT_SECRET Error:", rtn)
 		return
 	}
 	fmt.Printf("Client Secret Share CS2: 0x")
 	amclcgo.MPIN_printBinary(CS2[:])

 	// Combine client secret shares
 	CS := make([]byte, amclcgo.G1S)
 	rtn, CS = amclcgo.MPIN_RECOMBINE_G1_WRAP(CS1[:], CS2[:])
 	if rtn != 0 {
 		fmt.Println("MPIN_RECOMBINE_G1 Error:", rtn)
 		return
 	}
 	fmt.Printf("Client Secret CS: 0x")
 	amclcgo.MPIN_printBinary(CS[:])

 	// Generate time permit share 1
 	rtn, TP1 := amclcgo.MPIN_GET_CLIENT_PERMIT_WRAP(date, MS1[:], HCID)
 	if rtn != 0 {
 		fmt.Println("MPIN_GET_CLIENT_PERMIT Error:", rtn)
 		return
 	}
 	fmt.Printf("TP1: 0x")
 	amclcgo.MPIN_printBinary(TP1[:])

 	// Generate time permit share 2
 	rtn, TP2 := amclcgo.MPIN_GET_CLIENT_PERMIT_WRAP(date, MS2[:], HCID)
 	if rtn != 0 {
 		fmt.Println("MPIN_GET_CLIENT_PERMIT Error:", rtn)
 		return
 	}
 	fmt.Printf("TP2: 0x")
 	amclcgo.MPIN_printBinary(TP2[:])

 	// Combine time permit shares
 	rtn, TP := amclcgo.MPIN_RECOMBINE_G1_WRAP(TP1[:], TP2[:])
 	if rtn != 0 {
 		fmt.Println("MPIN_RECOMBINE_G1(TP1, TP2) Error:", rtn)
 		return
 	}

 	// Client extracts PIN1 from secret to create Token
 	for PIN1 < 0 {
 		fmt.Printf("Please enter PIN to create token: ")
 		fmt.Scan(&PIN1)
 	}

 	rtn, TOKEN := amclcgo.MPIN_EXTRACT_PIN_WRAP(ID[:], PIN1, CS[:])
 	if rtn != 0 {
 		fmt.Printf("FAILURE: EXTRACT_PIN rtn: %d\n", rtn)
 		return
 	}
 	fmt.Printf("Client Token TK: 0x")
 	amclcgo.MPIN_printBinary(TOKEN[:])

 	//////   Client   //////

 	// Precomputation
 	rtn, G1, G2 := amclcgo.MPIN_PRECOMPUTE_WRAP(TOKEN[:], HCID)
 	if rtn != 0 {
 		fmt.Println("MPIN_PRECOMPUTE(TOKEN[:], HCID) Error:", rtn)
 		return
 	}

 	for PIN2 < 0 {
 		fmt.Printf("Please enter PIN to authenticate: ")
 		fmt.Scan(&PIN2)
 	}

 	// Send U, UT, V, timeValue and Message to server
 	var X [amclcgo.EGS]byte
 	fmt.Printf("X: 0x")
 	amclcgo.MPIN_printBinary(X[:])
 	rtn, XOut, Y1, V, U, UT := amclcgo.MPIN_CLIENT_WRAP(date, timeValue, PIN2, rng, ID[:], X[:], TOKEN[:], TP[:], MESSAGE[:])
 	if rtn != 0 {
 		fmt.Printf("FAILURE: CLIENT rtn: %d\n", rtn)
 		return
 	}
 	fmt.Printf("Y1: 0x")
 	amclcgo.MPIN_printBinary(Y1[:])
 	fmt.Printf("XOut: 0x")
 	amclcgo.MPIN_printBinary(XOut[:])

 	// Send Z=r.ID to Server
 	var R [amclcgo.EGS]byte
 	fmt.Printf("R: 0x")
 	amclcgo.MPIN_printBinary(R[:])
 	rtn, ROut, Z := amclcgo.MPIN_GET_G1_MULTIPLE_WRAP(rng, 1, R[:], HCID[:])
 	fmt.Printf("ROut: 0x")
 	amclcgo.MPIN_printBinary(ROut[:])

 	//////   Server   //////
 	rtn, HID, HTID, Y2, E, F := amclcgo.MPIN_SERVER_WRAP(date, timeValue, SS[:], U[:], UT[:], V[:], ID[:], MESSAGE[:])
 	if rtn != 0 {
 		fmt.Printf("FAILURE: SERVER rtn: %d\n", rtn)
 	}
 	fmt.Printf("Y2: 0x")
 	amclcgo.MPIN_printBinary(Y2[:])
 	fmt.Printf("HID: 0x")
 	amclcgo.MPIN_printBinary(HID[:])
 	fmt.Printf("HTID: 0x")
 	amclcgo.MPIN_printBinary(HTID[:])

 	if rtn != 0 {
 		fmt.Printf("Authentication failed Error Code %d\n", rtn)
 		err := amclcgo.MPIN_KANGAROO(E[:], F[:])
 		if err != 0 {
 			fmt.Printf("PIN Error %d\n", err)
 		}
 		return
 	} else {
 		fmt.Printf("Authenticated ID: %s \n", IDstr)
 	}

 	// send T=w.ID to client
 	var W [amclcgo.EGS]byte
 	fmt.Printf("W: 0x")
 	amclcgo.MPIN_printBinary(W[:])
 	rtn, WOut, T := amclcgo.MPIN_GET_G1_MULTIPLE_WRAP(rng, 0, W[:], HTID[:])
 	fmt.Printf("WOut: 0x")
 	amclcgo.MPIN_printBinary(WOut[:])
 	fmt.Printf("T: 0x")
 	amclcgo.MPIN_printBinary(T[:])

         // Hash all values
         HM := amclcgo.MPIN_HASH_ALL_WRAP(ID[:],U[:],UT[:],Y2[:],V[:],Z[:],T[:])

 	rtn, AES_KEY_SERVER := amclcgo.MPIN_SERVER_KEY_WRAP(Z[:], SS[:], WOut[:], HM[:],HID[:],U[:], UT[:])
 	fmt.Printf("Server Key =  0x")
 	amclcgo.MPIN_printBinary(AES_KEY_SERVER[:])

 	rtn, AES_KEY_CLIENT := amclcgo.MPIN_CLIENT_KEY_WRAP(PIN2, G1[:], G2[:], ROut[:], XOut[:], HM[:],T[:])
 	fmt.Printf("Client Key =  0x")
 	amclcgo.MPIN_printBinary(AES_KEY_CLIENT[:])

 	//////   Server   //////

 	// Initialization vector
 	IV := amclgo.GENERATE_RANDOM(rng, 12)
 	fmt.Printf("IV: 0x")
 	amclcgo.MPIN_printBinary(IV[:])

 	// header
 	HEADER := amclgo.GENERATE_RANDOM(rng, 16)
 	fmt.Printf("HEADER: 0x")
 	amclcgo.MPIN_printBinary(HEADER[:])

 	// Input plaintext
 	plaintextStr := "A test message"
 	PLAINTEXT1 := []byte(plaintextStr)
 	fmt.Printf("String to encrypt: %s \n", plaintextStr)
 	fmt.Printf("PLAINTEXT1: 0x")
 	amclcgo.MPIN_printBinary(PLAINTEXT1[:])

 	// AES-GCM Encryption
 	CIPHERTEXT, TAG1 := amclcgo.MPIN_AES_GCM_ENCRYPT(AES_KEY_SERVER[:], IV[:], HEADER[:], PLAINTEXT1[:])
 	fmt.Printf("CIPHERTEXT:  0x")
 	amclcgo.MPIN_printBinary(CIPHERTEXT[:])
 	fmt.Printf("TAG1:  0x")
 	amclcgo.MPIN_printBinary(TAG1[:])

 	// Send IV, HEADER, CIPHERTEXT and TAG1 to client

 	// AES-GCM Decryption
 	PLAINTEXT2, TAG2 := amclcgo.MPIN_AES_GCM_DECRYPT(AES_KEY_CLIENT[:], IV[:], HEADER[:], CIPHERTEXT[:])
 	fmt.Printf("PLAINTEXT2:  0x")
 	amclcgo.MPIN_printBinary(PLAINTEXT2[:])
 	fmt.Printf("TAG2:  0x")
 	amclcgo.MPIN_printBinary(TAG2[:])
 	fmt.Printf("Decrypted string: %s \n", string(PLAINTEXT2))
 }
	/*
	Licensed to the Apache Software Foundation (ASF) under one
	or more contributor license agreements. See the NOTICE file
	distributed with this work for additional information
	regarding copyright ownership. The ASF licenses this file
	to you under the Apache License, Version 2.0 (the
	"License"); you may not use this file except in compliance
	with the License. You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing,
	software distributed under the License is distributed on an
	"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	KIND, either express or implied. See the License for the
	specific language governing permissions and limitations
	under the License.
	*/

	package main

	import (
	"encoding/hex"
	"fmt"

	amclcgo "git.apache.org/incubator-milagro-crypto.git/go/amcl-cgo"
	amclgo "git.apache.org/incubator-milagro-crypto.git/go/amcl-go"
	)

	func main() {
	// Assign the End-User an ID
	IDstr := "testUser@miracl.com"
	ID := []byte(IDstr)
	fmt.Printf("ID: ")
	amclcgo.MPIN_printBinary(ID)
	fmt.Printf("\n")

	// Epoch time in days
	date := amclcgo.MPIN_today()

	// Epoch time in seconds
	timeValue := amclcgo.MPIN_GET_TIME()

	// PIN variable to create token
	PIN1 := -1
	// PIN variable to authenticate
	PIN2 := -1

	// Seed value for Random Number Generator (RNG)
	seedHex := "9e8b4178790cd57a5761c4a6f164ba72"
	seed, err := hex.DecodeString(seedHex)
	if err != nil {
	fmt.Println("Error decoding seed value")
	return
	}
	rng := amclgo.NewRAND()
	rng.Seed(len(seed), seed)

	// Message to sign
	var MESSAGE []byte
	// MESSAGE := []byte("test sign message")

	// Generate Master Secret Share 1
	rtn, MS1 := amclcgo.MPIN_RANDOM_GENERATE_WRAP(rng)
	if rtn != 0 {
	fmt.Println("MPIN_RANDOM_GENERATE Error:", rtn)
	return
	}
	fmt.Printf("MS1: 0x")
	amclcgo.MPIN_printBinary(MS1[:])

	// Generate Master Secret Share 2
	rtn, MS2 := amclcgo.MPIN_RANDOM_GENERATE_WRAP(rng)
	if rtn != 0 {
	fmt.Println("MPIN_RANDOM_GENERATE Error:", rtn)
	return
	}
	fmt.Printf("MS2: 0x")
	amclcgo.MPIN_printBinary(MS2[:])

	// Either Client or TA calculates Hash(ID)
	HCID := amclcgo.MPIN_HASH_ID(ID)

	// Generate server secret share 1
	rtn, SS1 := amclcgo.MPIN_GET_SERVER_SECRET_WRAP(MS1[:])
	if rtn != 0 {
	fmt.Println("MPIN_GET_SERVER_SECRET Error:", rtn)
	return
	}
	fmt.Printf("SS1: 0x")
	amclcgo.MPIN_printBinary(SS1[:])

	// Generate server secret share 2
	rtn, SS2 := amclcgo.MPIN_GET_SERVER_SECRET_WRAP(MS2[:])
	if rtn != 0 {
	fmt.Println("MPIN_GET_SERVER_SECRET Error:", rtn)
	return
	}
	fmt.Printf("SS2: 0x")
	amclcgo.MPIN_printBinary(SS2[:])

	// Combine server secret shares
	rtn, SS := amclcgo.MPIN_RECOMBINE_G2_WRAP(SS1[:], SS2[:])
	if rtn != 0 {
	fmt.Println("MPIN_RECOMBINE_G2(SS1, SS2) Error:", rtn)
	return
	}
	fmt.Printf("SS: 0x")
	amclcgo.MPIN_printBinary(SS[:])

	// Generate client secret share 1
	rtn, CS1 := amclcgo.MPIN_GET_CLIENT_SECRET_WRAP(MS1[:], HCID)
	if rtn != 0 {
	fmt.Println("MPIN_GET_CLIENT_SECRET Error:", rtn)
	return
	}
	fmt.Printf("Client Secret Share CS1: 0x")
	amclcgo.MPIN_printBinary(CS1[:])

	// Generate client secret share 2
	rtn, CS2 := amclcgo.MPIN_GET_CLIENT_SECRET_WRAP(MS2[:], HCID)
	if rtn != 0 {
	fmt.Println("MPIN_GET_CLIENT_SECRET Error:", rtn)
	return
	}
	fmt.Printf("Client Secret Share CS2: 0x")
	amclcgo.MPIN_printBinary(CS2[:])

	// Combine client secret shares
	CS := make([]byte, amclcgo.G1S)
	rtn, CS = amclcgo.MPIN_RECOMBINE_G1_WRAP(CS1[:], CS2[:])
	if rtn != 0 {
	fmt.Println("MPIN_RECOMBINE_G1 Error:", rtn)
	return
	}
	fmt.Printf("Client Secret CS: 0x")
	amclcgo.MPIN_printBinary(CS[:])

	// Generate time permit share 1
	rtn, TP1 := amclcgo.MPIN_GET_CLIENT_PERMIT_WRAP(date, MS1[:], HCID)
	if rtn != 0 {
	fmt.Println("MPIN_GET_CLIENT_PERMIT Error:", rtn)
	return
	}
	fmt.Printf("TP1: 0x")
	amclcgo.MPIN_printBinary(TP1[:])

	// Generate time permit share 2
	rtn, TP2 := amclcgo.MPIN_GET_CLIENT_PERMIT_WRAP(date, MS2[:], HCID)
	if rtn != 0 {
	fmt.Println("MPIN_GET_CLIENT_PERMIT Error:", rtn)
	return
	}
	fmt.Printf("TP2: 0x")
	amclcgo.MPIN_printBinary(TP2[:])

	// Combine time permit shares
	rtn, TP := amclcgo.MPIN_RECOMBINE_G1_WRAP(TP1[:], TP2[:])
	if rtn != 0 {
	fmt.Println("MPIN_RECOMBINE_G1(TP1, TP2) Error:", rtn)
	return
	}

	// Client extracts PIN1 from secret to create Token
	for PIN1 < 0 {
	fmt.Printf("Please enter PIN to create token: ")
	fmt.Scan(&PIN1)
	}

	rtn, TOKEN := amclcgo.MPIN_EXTRACT_PIN_WRAP(ID[:], PIN1, CS[:])
	if rtn != 0 {
	fmt.Printf("FAILURE: EXTRACT_PIN rtn: %d\n", rtn)
	return
	}
	fmt.Printf("Client Token TK: 0x")
	amclcgo.MPIN_printBinary(TOKEN[:])

	////// Client //////

	// Precomputation
	rtn, G1, G2 := amclcgo.MPIN_PRECOMPUTE_WRAP(TOKEN[:], HCID)
	if rtn != 0 {
	fmt.Println("MPIN_PRECOMPUTE(TOKEN[:], HCID) Error:", rtn)
	return
	}

	for PIN2 < 0 {
	fmt.Printf("Please enter PIN to authenticate: ")
	fmt.Scan(&PIN2)
	}

	// Send U, UT, V, timeValue and Message to server
	var X [amclcgo.EGS]byte
	fmt.Printf("X: 0x")
	amclcgo.MPIN_printBinary(X[:])
	rtn, XOut, Y1, V, U, UT := amclcgo.MPIN_CLIENT_WRAP(date, timeValue, PIN2, rng, ID[:], X[:], TOKEN[:], TP[:], MESSAGE[:])
	if rtn != 0 {
	fmt.Printf("FAILURE: CLIENT rtn: %d\n", rtn)
	return
	}
	fmt.Printf("Y1: 0x")
	amclcgo.MPIN_printBinary(Y1[:])
	fmt.Printf("XOut: 0x")
	amclcgo.MPIN_printBinary(XOut[:])

	// Send Z=r.ID to Server
	var R [amclcgo.EGS]byte
	fmt.Printf("R: 0x")
	amclcgo.MPIN_printBinary(R[:])
	rtn, ROut, Z := amclcgo.MPIN_GET_G1_MULTIPLE_WRAP(rng, 1, R[:], HCID[:])
	fmt.Printf("ROut: 0x")
	amclcgo.MPIN_printBinary(ROut[:])

	////// Server //////
	rtn, HID, HTID, Y2, E, F := amclcgo.MPIN_SERVER_WRAP(date, timeValue, SS[:], U[:], UT[:], V[:], ID[:], MESSAGE[:])
	if rtn != 0 {
	fmt.Printf("FAILURE: SERVER rtn: %d\n", rtn)
	}
	fmt.Printf("Y2: 0x")
	amclcgo.MPIN_printBinary(Y2[:])
	fmt.Printf("HID: 0x")
	amclcgo.MPIN_printBinary(HID[:])
	fmt.Printf("HTID: 0x")
	amclcgo.MPIN_printBinary(HTID[:])

	if rtn != 0 {
	fmt.Printf("Authentication failed Error Code %d\n", rtn)
	err := amclcgo.MPIN_KANGAROO(E[:], F[:])
	if err != 0 {
	fmt.Printf("PIN Error %d\n", err)
	}
	return
	} else {
	fmt.Printf("Authenticated ID: %s \n", IDstr)
	}

	// send T=w.ID to client
	var W [amclcgo.EGS]byte
	fmt.Printf("W: 0x")
	amclcgo.MPIN_printBinary(W[:])
	rtn, WOut, T := amclcgo.MPIN_GET_G1_MULTIPLE_WRAP(rng, 0, W[:], HTID[:])
	fmt.Printf("WOut: 0x")
	amclcgo.MPIN_printBinary(WOut[:])
	fmt.Printf("T: 0x")
	amclcgo.MPIN_printBinary(T[:])

	// Hash all values
	HM := amclcgo.MPIN_HASH_ALL_WRAP(ID[:],U[:],UT[:],Y2[:],V[:],Z[:],T[:])

	rtn, AES_KEY_SERVER := amclcgo.MPIN_SERVER_KEY_WRAP(Z[:], SS[:], WOut[:], HM[:],HID[:],U[:], UT[:])
	fmt.Printf("Server Key = 0x")
	amclcgo.MPIN_printBinary(AES_KEY_SERVER[:])

	rtn, AES_KEY_CLIENT := amclcgo.MPIN_CLIENT_KEY_WRAP(PIN2, G1[:], G2[:], ROut[:], XOut[:], HM[:],T[:])
	fmt.Printf("Client Key = 0x")
	amclcgo.MPIN_printBinary(AES_KEY_CLIENT[:])

	////// Server //////

	// Initialization vector
	IV := amclgo.GENERATE_RANDOM(rng, 12)
	fmt.Printf("IV: 0x")
	amclcgo.MPIN_printBinary(IV[:])

	// header
	HEADER := amclgo.GENERATE_RANDOM(rng, 16)
	fmt.Printf("HEADER: 0x")
	amclcgo.MPIN_printBinary(HEADER[:])

	// Input plaintext
	plaintextStr := "A test message"
	PLAINTEXT1 := []byte(plaintextStr)
	fmt.Printf("String to encrypt: %s \n", plaintextStr)
	fmt.Printf("PLAINTEXT1: 0x")
	amclcgo.MPIN_printBinary(PLAINTEXT1[:])

	// AES-GCM Encryption
	CIPHERTEXT, TAG1 := amclcgo.MPIN_AES_GCM_ENCRYPT(AES_KEY_SERVER[:], IV[:], HEADER[:], PLAINTEXT1[:])
	fmt.Printf("CIPHERTEXT: 0x")
	amclcgo.MPIN_printBinary(CIPHERTEXT[:])
	fmt.Printf("TAG1: 0x")
	amclcgo.MPIN_printBinary(TAG1[:])

	// Send IV, HEADER, CIPHERTEXT and TAG1 to client

	// AES-GCM Decryption
	PLAINTEXT2, TAG2 := amclcgo.MPIN_AES_GCM_DECRYPT(AES_KEY_CLIENT[:], IV[:], HEADER[:], CIPHERTEXT[:])
	fmt.Printf("PLAINTEXT2: 0x")
	amclcgo.MPIN_printBinary(PLAINTEXT2[:])
	fmt.Printf("TAG2: 0x")
	amclcgo.MPIN_printBinary(TAG2[:])
	fmt.Printf("Decrypted string: %s \n", string(PLAINTEXT2))
	}