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/*
* This file is part of GNU Taler
* (C) 2020 Taler Systems S.A.
*
* GNU Taler is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 3, or (at your option) any later version.
*
* GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
package net.taler.lib.crypto
import kotlin.random.Random
import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertFalse
import kotlin.test.assertTrue
class EllipticCurveTest {
private val crypto = CryptoFactory.getCrypto()
@Test
fun testExchangeTvgEddsaKey() {
val pri = "9TM70AKDTS57AWY9JK2J4TMBTMW6K62WHHGZWYDG0VM5ABPZKD40"
val pub = "8GSJZ649T2PXMKZC01Y4ANNBE7MF14QVK9SQEC4E46ZHKCVG8AS0"
val pubBytes = crypto.eddsaGetPublic(Base32Crockford.decode(pri))
assertEquals(pub, Base32Crockford.encode(pubBytes))
val pri2 = "C9C5X5JS2SWRTSX5AQBPFA4S2DFD6V9Q04XTTEZDQ5XSSQK2P39G"
val pub2 = "6WC3MPYM5XKPKRA2Z6SYB81CPFV3E7EC6S2GVE095X8XH63QTZCG"
val pub2Bytes = crypto.eddsaGetPublic(Base32Crockford.decode(pri2))
assertEquals(pub2, Base32Crockford.encode(pub2Bytes))
}
@Test
fun testExchangeTvgEcdheKey() {
val pri = "X4T4N0M8PVQXQEBW2BA7049KFSM7J437NSDFC6GDNM3N5J9367A0"
val pub = "M997P494MS6A95G1P0QYWW2VNPSHSX5Q6JBY5B9YMNYWP0B50X3G"
val pubBytes = crypto.ecdheGetPublic(Base32Crockford.decode(pri))
assertEquals(pub, Base32Crockford.encode(pubBytes))
val pri2 = "MB8ZSQFTVPX4V0MGT3BA1PQS12NJ7KH33DA8D22NCWTNA5BHH2YG"
val pub2 = "8T2CN1W8G3XZE9C9158A5ASS74117GK1XQ1XAX5SGBFDGHS8H5W0"
val pub2Bytes = crypto.ecdheGetPublic(Base32Crockford.decode(pri2))
assertEquals(pub2, Base32Crockford.encode(pub2Bytes))
}
@Test
fun testCreateEddsaKeyPair() {
val pair1 = crypto.createEddsaKeyPair()
val pair2 = crypto.createEddsaKeyPair()
assertFalse(pair1.privateKey contentEquals pair2.privateKey)
assertFalse(pair1.publicKey contentEquals pair2.publicKey)
}
@Test
fun testCreateEcdheKeyPair() {
val pair1 = crypto.createEcdheKeyPair()
val pair2 = crypto.createEcdheKeyPair()
assertFalse(pair1.privateKey contentEquals pair2.privateKey)
assertFalse(pair1.publicKey contentEquals pair2.publicKey)
}
@Test
@ExperimentalStdlibApi
fun testEddsaSignAndVerify() {
val msg = "Hallo world!".encodeToByteArray()
val pri = "9TM70AKDTS57AWY9JK2J4TMBTMW6K62WHHGZWYDG0VM5ABPZKD40"
val expectedSig =
"Z6H76JXPJFP3JBGSF54XBF0BVXDJ0CJBK4YT9GVR1AT916ZD57KP53YZN5G67A4YN95WGMZKQW7744483P5JDF06B6S7TMK195QGP20"
val sig = crypto.eddsaSign(msg, Base32Crockford.decode(pri))
assertEquals(expectedSig, Base32Crockford.encode(sig))
val pub = crypto.eddsaGetPublic(Base32Crockford.decode(pri))
assertTrue(crypto.eddsaVerify(msg, sig, pub))
val wrongSig = Random.nextBytes(64)
assertFalse(crypto.eddsaVerify(msg, wrongSig, pub))
val wrongPub = Random.nextBytes(32)
assertFalse(crypto.eddsaVerify(msg, sig, wrongPub))
val wrongMsg = Random.nextBytes(16)
assertFalse(crypto.eddsaVerify(wrongMsg, sig, pub))
val pri2 = "T4NK2VVZZ1ZF6EBGEQHRK7KY67PCEVAZC5YHYH612XG5R6NJXSB0"
val pub2 = "2X3PSPT7D6TEM97R98C0DHZREFVAVA3XTH11D5A2Z2K7GBKQ7AEG"
val data2 =
"00000J00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
val expectedSig2 =
"RFC59ZWJB88TD03F4GTQD3RWKH3KKRVEY2T1VN7CFEF51SCZ4BX8HGHC708GW1SN7Y4XFEDE3A5PFZEJ7PR7V09YZXX10DM608T1W20"
val sig2 = crypto.eddsaSign(Base32Crockford.decode(data2), Base32Crockford.decode(pri2))
assertEquals(expectedSig2, Base32Crockford.encode(sig2))
assertTrue(crypto.eddsaVerify(Base32Crockford.decode(data2), sig2, Base32Crockford.decode(pub2)))
}
@Test
fun testExchangeTvgEddsaEcdh() {
val ecdhePrivateKey = "4AFZWMSGTVCHZPQ0R81NWXDCK4N58G7SDBBE5KXE080Y50370JJG"
val ecdhePublicKey = "FXFN5GPAFTKVPWJDPVXQ87167S8T82T5ZV8CDYC0NH2AE14X0M30"
val ecdhePublicKeyBytes = crypto.ecdheGetPublic(Base32Crockford.decode(ecdhePrivateKey))
assertEquals(ecdhePublicKey, Base32Crockford.encode(ecdhePublicKeyBytes))
val eddsaPrivateKey = "1KG54M8T3X8BSFSZXCR3SQBSR7Y9P53NX61M864S7TEVMJ2XVPF0"
val eddsaPublicKey = "7BXWKG6N224C57RTDV8XEAHR108HG78NMA995BE8QAT5GC1S7E80"
val eddsaPublicKeyBytes = crypto.eddsaGetPublic(Base32Crockford.decode(eddsaPrivateKey))
assertEquals(eddsaPublicKey, Base32Crockford.encode(eddsaPublicKeyBytes))
val keyMaterial =
"PKZ42Z56SVK2796HG1QYBRJ6ZQM2T9QGA3JA4AAZ8G7CWK9FPX175Q9JE5P0ZAX3HWWPHAQV4DPCK10R9X3SAXHRV0WF06BHEC2ZTKR"
val keyMaterial1Bytes = crypto.keyExchangeEddsaEcdhe(
Base32Crockford.decode(eddsaPrivateKey),
Base32Crockford.decode(ecdhePublicKey)
)
assertEquals(keyMaterial, Base32Crockford.encode(keyMaterial1Bytes))
val keyMaterial2Bytes = crypto.keyExchangeEcdheEddsa(
Base32Crockford.decode(ecdhePrivateKey),
Base32Crockford.decode(eddsaPublicKey)
)
assertEquals(keyMaterial, Base32Crockford.encode(keyMaterial2Bytes))
val ecdhePrivateKey2 = "3AMRJ1KC87VWX9MVQMW8MB9YVX5DMS6P5V2SYZNCZ44XVMSDVEFG"
val ecdhePublicKey2 = "CFFVCRFTNP7701KZC7187BC42MGSVCMBWK38F23E7T9VVK9D41Q0"
val ecdhePublicKeyBytes2 = crypto.ecdheGetPublic(Base32Crockford.decode(ecdhePrivateKey2))
assertEquals(ecdhePublicKey2, Base32Crockford.encode(ecdhePublicKeyBytes2))
val eddsaPrivateKey2 = "8AZTVPCXNCVBKJVQ6XS7Z38KB9JB38WJ7Z80F9FTCX1WHZACTXJ0"
val eddsaPublicKey2 = "T3F1VYAVZX3DVCNJTB3BNQTRZGXN446QP2VD847CB6N5V75RT2B0"
val eddsaPublicKeyBytes2 = crypto.eddsaGetPublic(Base32Crockford.decode(eddsaPrivateKey2))
assertEquals(eddsaPublicKey2, Base32Crockford.encode(eddsaPublicKeyBytes2))
val keyMaterial2 =
"FPQSHC6MWWJGEPXXVF76Q8C4PBJFE59RSGRGFQ3Z6ESR67HMG7FAK6JTCQ4ZKHSVNNCF53DX8FY55EA2193N2A6KD510AEV5TBVZRJR"
val keyMaterial1Bytes2 = crypto.keyExchangeEddsaEcdhe(
Base32Crockford.decode(eddsaPrivateKey2),
Base32Crockford.decode(ecdhePublicKey2)
)
assertEquals(keyMaterial2, Base32Crockford.encode(keyMaterial1Bytes2))
val keyMaterial2Bytes2 = crypto.keyExchangeEcdheEddsa(
Base32Crockford.decode(ecdhePrivateKey2),
Base32Crockford.decode(eddsaPublicKey2)
)
assertEquals(keyMaterial2, Base32Crockford.encode(keyMaterial2Bytes2))
}
}
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