/*
* 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
*/
package net.taler.wallet.kotlin.crypto
import net.taler.wallet.kotlin.Amount
import net.taler.wallet.kotlin.Base32Crockford
import net.taler.wallet.kotlin.Timestamp
import net.taler.wallet.kotlin.crypto.Signature.PurposeBuilder
import net.taler.wallet.kotlin.exchange.DenominationRecord
import net.taler.wallet.kotlin.exchange.DenominationStatus.Unverified
import net.taler.wallet.kotlin.exchange.DenominationStatus.VerifiedBad
import net.taler.wallet.kotlin.exchange.WireFee
import kotlin.random.Random
import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertFalse
import kotlin.test.assertTrue
class SignatureTest {
private val crypto = CryptoFactory.getCrypto()
private val signature = Signature(crypto)
private class PurposeBuilderVector(val purposeNum: Int, val chunks: List, val result: String)
@Test
fun testSignaturePurposeBuilder() {
val vectors = listOf(
PurposeBuilderVector(42, listOf("46D6FNS4VAFW0"), "000004000002M8CTCZBJ9PMZR0"),
PurposeBuilderVector(
1375883724,
listOf("7H2ENBHG1AVRD5QVKYCXKAZQQQGCSEAAZ4"),
"000007AJ098WRF24XAQ302NQGTBFQ7WSV6NZFFF0SJWMNY8"
),
PurposeBuilderVector(251873401, listOf("KVSRVCV6J7QGYR0"), "0000048F0D47K7QKHPSPD4FF1XG0"),
PurposeBuilderVector(
2126178285,
listOf("EJN927GRT1HNS0K53TBPWYB4", "QGSXW3NGHPJCVTBX3KHGW7GBC1SJWPK0", "XK7GA"),
"00000BKYQBKYTX5AJ4F1HM33BJ16A7MQDSWP9F1KVR7B13D4SQMQT7731RF0PR3K5SD61V6F0M"
),
PurposeBuilderVector(
871975602,
listOf("JC26GG7M", "D5GER58NSW3MX3AB2EA0", "HVB81PFV0YYQ2170H77TQPZTB21T314P9B1N3VSXEHZ88VEPHW"),
"00000E1KZ55B54R4D10F8TB0XGAHBKR79T6MP4WMHVB81PFV0YYQ2170H77TQPZTB21T314P9B1N3VSXEHZ88VEPHW"
),
PurposeBuilderVector(
366986877,
listOf("28", "48213TXMKY8H8EGRJ9XP00D9MHRHQG5N02W5GG0", "VR4CDW7WQ2FYQF3WBG60"),
"00000B8NVZ37T4H20G8YQD4ZJ4A3M64JFDG03AD4E4DW1D80Q1C41QG8RVRFSE4ZXEY7RQ0C"
),
PurposeBuilderVector(
1369171164,
listOf(
"SJTSKNX7W7CAP848GCESA09HQQQYQN50G1GY5AHPP12D4GMZJCXMCFPYECGEBF8",
"J70SVFRH8WN1DP7DZ60BZW0",
"275VB93D2MV6NN7V97QXC16VMX07JNCC5R3HBH1TSWTW5V72G1E66HP73ANWFXE6NG"
),
"00000SJHKFJDSK5NK7BTFRERNCG8H0RXJM0K3FFFXFAA1031WAN3DC24T919Z4SV8RZDWWS0WPYS3GCXQW8MEAGPV3PZK05ZY08WQDD4DMAKCTPMZD4YZNG4VEKM0YANHGQ0E5E47B7KBGQCWA05RRT6RWDAQHZNRTP0"
),
PurposeBuilderVector(
2115762114,
listOf("Z7A3PQ7BV5G5D1P3F2EY9KN4GKVEG95KZD50", "SZ3PA4BSWF8T22TJMDZN5877Z9DQFC67K9E0"),
"00000D3Y3FVW5YEM7DEEQPB0AT3C6Y4XWK7A917PX0JB7YTASZ3PA4BSWF8T22TJMDZN5877Z9DQFC67K9E0"
),
PurposeBuilderVector(
1382722498,
listOf("0WEEY7GRA8Q8ZWS2NRP0", "FQ5YY3ZWJ64014A0SPWMCE4B58", "G03C6M9PZ45D99G4M2HZJ"),
"00000CAJDANW41RWXWF1GMHEHZSJ5BHCFQ5YY3ZWJ64014A0SPWMCE4B5A00DGTH6VWGNN560JGA7Y8"
),
PurposeBuilderVector(
1557782497,
listOf(
"CEB9E7Q87X12R172RZ8DAHSGGS60",
"M17JXQ290P209Q7EH759PW558FYZYTEHR40J18M81W",
"B918DJVWTERCHS54S0G93DFPVK9TV383DMRJR43ZTFZBAE3CVSFG"
),
"00000MTWV7FY2RWPJWFEGFT25G2E5HYGTN3K11JCM17JXQ290P209Q7EH759PW558FYZYTEHR40J18M81XD451PBFK9V1J74MK4214DNYVED7BCD0DPK2B0GFZ9ZXD9RDKF5Y"
),
PurposeBuilderVector(1662106597, listOf("621Y24CA3ZCHJJ8"), "000004B326XYAC43W48RM7YS354G"),
PurposeBuilderVector(
393436430,
listOf(
"6WMDVK6XKGEAX152ZM4SHQ77DCRQB4RYJX0MGCZFVVK3XTG",
"8TKEY2F1PMAT396GC3E191182F34FXXR12MR7Z6WMG4S10GZX7RJG"
),
"00000HGQEDEGWDS8VQ6DV70WNT2A5Z89K3EEETSHEP9HX5T190SYZQQ67VN4D9QF17GVA5D1MK861Q0MGGM17HJ7YYW0HAC3ZKEA82CGG8FYKW98"
),
PurposeBuilderVector(
1616746709,
listOf("ZQT1F901YWFDX6XZZB6R8PSQ1QJANCPF63T8RE09HRK2XQ7EE2K0F74GERH4GQ0"),
"00000BV0BPCDBZFM2YJ03XRYVTDVZYPDGHDKE3F4NASCYC7MHGW0K3H65VEEWW560YE90XH291E0"
),
PurposeBuilderVector(
691857007,
listOf("5JT5DM7KWVW7A7P764NTG0FJDWEQTQAGB253J547GXWX93204NM0"),
"00000A197KK6YB5MAV8F7SQREMFCEC9BN00Z4VRXFNEN0P4A74A8F1VSTJ6409B8"
),
PurposeBuilderVector(
582885064,
listOf("W5P2HP14MCNSKX4CZ4FZ0BDPSX2SV7MCE45V8PF7DW9EXAGK3TC0"),
"00000A12QRFCHRBC53C298SBK7T8SY8ZY0PVDKT5KPF8RW8BPHCYEVRJXTN167MR"
),
PurposeBuilderVector(
480383332,
listOf(
"49DZJY0K1WJFDK7P86Q1R2F150S50JQR8HQW059HBG9CR615N4V82",
"D0XXQKX9BB0HVJK34TKCZJ1E2JQKF06EQVXRRD2ZKX4QGXG",
"99JY6SS2HJ1J29GS1793CGE5BKSG"
),
"00000NRWM88P88JVZ5W163S4YV6FCGDE3G4Y2A1JA15FGH3FR0AK2Q0JSGC2BA9PG5M3QPYFN5DC27EACCKADKY85RAAYDW0STZFQ31MBYFMJY3P99JY6SS2HJ1J29GS1793CGE5BKSG"
),
PurposeBuilderVector(
877078324,
listOf("RC", "K1PKX78BPGNQSSZCVRB3B6PJYR", "74"),
"000006HM8WKK9GWRDMZ9T2XM5DYEFV6Y2RTSNMQP74"
),
PurposeBuilderVector(
25488155,
listOf(
"FNG58X0W2A4HV4ZY5TKS73RGNHA8KZ3B4WWDJS2V1B27F3G6G08FNHM8NYBZ45Q8",
"NQGNDPDNW4G9AEHXB1BKXQXK84"
),
"00000G01GKNHPZB0AHT1R4M93P9ZWBN7JE7H1B2MH7Y6P9SRV5J5P2P4EY70D00GZB38HBWQY8BEHBF1AVCVBR90JMX3TP2Q7VFV6G8"
),
PurposeBuilderVector(
749389285,
listOf(
"FVD8X18A3S2KHJ7143TCEHE3K083DRBG2CA0D766NMRVHX7MSN78NSYHZSWNH9V2DM",
"1TSPZ4VBKEBKCQEB2673H2FJHCZ6M19R2691NY79A0",
"P9VW044VY2TGKNNF4ZWZ1S2ACM4VJYCWP7ZGWRKR1264ZS2CQZGSXZ775AC41X5778"
),
"00000X1CNB2YAZPTHT2GM7J5734E287MRX2W760G6VGQ04RM0TECDB9HQ3TF9KAEHBKX3ZKSB2KP4V8EPDQS6TWVJWV5VJRHHRW8KWMB7SN0AE0HJ8DFHTAGP9VW044VY2TGKNNF4ZWZ1S2ACM4VJYCWP7ZGWRKR1264ZS2CQZGSXZ775AC41X5778"
),
PurposeBuilderVector(
434249902,
listOf(
"VFERBNSH7X70",
"T5DWNBWMF3BPAGWSESKF7WGTTS3JHVKAAR3DR",
"SMCA0184DN3WE934BGFE4MCE14279NYCFF0PJDQ20JRHFZXSGXE6CP1BSMGR479HAC"
),
"00000KRSW8GAXPYXGQBK2FTET5DWNBWMF3BPAGWSESKF7WGTTS3JHVKAAR3DSK8RM02G8VA7RWJ68Q0YW98RW284EKBWRYY1D4VE415H2ZZVK1TWCSC2QK91G8EK2MR"
),
PurposeBuilderVector(
1710327887,
listOf("S64XB965NEAQQ5287XHNT126BW"),
"00000635Y644ZJC9TPJCBAWNFEA4GFV3BM24CQR"
),
PurposeBuilderVector(
1247371119,
listOf("CSXX5W59E3S03412M29J0HG0R67BW4B3X946GS2T0TVYPH9HFP9FC0M7", "931KSGS0ZJG4A79BT55G0Q4Q"),
"00000EJAB5FPYSKVTBRAJW7J0682584K41301GCEQR8P7TJ8D1J5M1NQXD2K2ZCJYR18EJ637K1J1Z508MEJQMAB01E9E"
),
PurposeBuilderVector(
2024386767,
listOf(
"R2WZA0FKD57D418NB2KK84PJKHAVPEC6219X2KQJ78JFB76F0R",
"CNYD5TAC7Y3N58CN6VK9F7NBKD2NJJK3VJ91CZKBFZWDVVZB28",
"G7WQJVXXYT4JHA1NK22RXS45BM0W5H5JD7JNX3PWD2WZ27Y5Y1FB4"
),
"00000SVRN6RCZG5SYM0Z6TAET82HAP576G9D572NQCWRC42KT57F4EH4YPECY1K5FK9EJK1ZGX9A359PWTBSXAWV8NCMMRYWJ8B7WTVZZ3EYZTRJG7WQJVXXYT4JHA1NK22RXS45BM0W5H5JD7JNX3PWD2WZ27Y5Y1FB4"
),
PurposeBuilderVector(1182512118, listOf("KH32THSNNZGJPC0"), "000004A6FESZD7265N3KBBZ15CR0"),
PurposeBuilderVector(
2029783771,
listOf("N7468QH02K49BTD16S1F6FB4NKNXB0Q410"),
"000007BRZG5DQAE8CHF20568JQMT2DJ2YCYP9B7BTP1E820"
),
PurposeBuilderVector(
1111140596,
listOf("6BN45PA2RCVRR8PJ6XKRJ9ZER2BR3MY9RQ290FADAG"),
"000008J27AMF8CQA8BCM5GSQHGHD4DV7H4KYXG4QG79WKHE4J0YMTN0"
)
)
for (v in vectors) {
val builder = PurposeBuilder(v.purposeNum)
for (chunk in v.chunks) builder.put(Base32Crockford.decode(chunk))
val encodedBytes = Base32Crockford.encode(builder.build())
assertEquals(v.result, encodedBytes)
}
}
private class PaymentSignatureVector(val publicKey: String, val hash: String, val signature: String)
@Test
fun testVerifyPaymentSignature() {
val vectors = listOf(
PaymentSignatureVector(
"8GSJZ649T2PXMKZC01Y4ANNBE7MF14QVK9SQEC4E46ZHKCVG8AS0",
"CW96WR74JS8T53EC8GKSGD49QKH4ZNFTZXDAWMMV5GJ1E4BM6B8GPN5NVHDJ8ZVXNCW7Q4WBYCV61HCA3PZC2YJD850DT29RHHN7ESR",
"JSNG99MX5W4AS7AEA8D4ADCHYTHFER0GX1N064E1XX48N513AXAEHDTG8ZT7ANWQK5HGCAXGEWN7TCBTYVG3RDPBTAS5HEP608KQ40R"
),
PaymentSignatureVector(
"6WC3MPYM5XKPKRA2Z6SYB81CPFV3E7EC6S2GVE095X8XH63QTZCG",
"Z6H76JXPJFP3JBGSF54XBF0BVXDJ0CJBK4YT9GVR1AT916ZD57KP53YZN5G67A4YN95WGMZKQW7744483P5JDF06B6S7TMK195QGP20",
"T2Y4KJJPZ0F2DMNF5S81V042T20VHB5VRXQYX4RF8KRH6H2Z4JRBD05CCDJ6C625MHM5FQET00RDX2NF5QX63S9YDXEP0710VBYHY10"
),
PaymentSignatureVector(
"2X3PSPT7D6TEM97R98C0DHZREFVAVA3XTH11D5A2Z2K7GBKQ7AEG",
"JSNG99MX5W4AS7AEA8D4ADCHYTHFER0GX1N064E1XX48N513AXAEHDTG8ZT7ANWQK5HGCAXGEWN7TCBTYVG3RDPBTAS5HEP608KQ40R",
"W0783H1KZ6GX58T5ZEH5VYMTXP7P7EA3KBKQ4Y8CN8M20GY8RNA4RX1AZG6TQ70NR4XG4EZ9D606P4RDAARD2SXTKA90BJMN9VEAC00"
)
)
for (v in vectors) {
// verification succeeds as expected
assertTrue(signature.verifyPayment(v.signature, v.hash, v.publicKey))
// verification fails which different signature
val size = Base32Crockford.calculateDecodedDataLength(v.signature.length)
val sig = Base32Crockford.encode(Random.nextBytes(size))
assertFalse(signature.verifyPayment(sig, v.hash, v.publicKey))
// verification fails which different hash
val hash = Base32Crockford.encode(Random.nextBytes(64))
assertFalse(signature.verifyPayment(v.signature, hash, v.publicKey))
// verification fails which different public key
val publicKey = Base32Crockford.encode(Random.nextBytes(32))
assertFalse(signature.verifyPayment(v.signature, v.hash, publicKey))
}
}
private class WireFeeSignatureVector(val wireFee: WireFee, val masterPub: String)
@Test
fun testVerifyWireFeeSignature() {
val type = "x-taler-bank"
val vectors = listOf(
WireFeeSignatureVector(
WireFee(
wireFee = Amount("TESTKUDOS", 0, 1000000),
closingFee = Amount("TESTKUDOS", 0, 1000000),
startStamp = Timestamp(1609470000000),
endStamp = Timestamp(1641006000000),
signature = "C77EZ56ZT4ACNPGP3PX881S42413N37NJVTRPNMM9BWRVGQBK2C157HHRF61RMYPAWW6QVWV5RVKEVBD3XAVJFXAEBM2HPNS5AMPY18"
), "Y8JGNCPMM7XTF44FT7V1JRNNJQ6F4R7DZPXAKYYCJZJVEX2C45QG"
),
WireFeeSignatureVector(
WireFee(
wireFee = Amount("TESTKUDOS", 0, 1000000),
closingFee = Amount("TESTKUDOS", 0, 1000000),
startStamp = Timestamp(1577847600000),
endStamp = Timestamp(1609470000000),
signature = "4F87Z12WQM7JXEKPRPGFZVGCZPNN6Q9RVP2NA0PZ57CYQP4QXV38EQW59X3K5WAQN82BX95X57775ZJGA5EB3VA5GV9S3JBA3RGX41G"
), "0BJ4SX13W4Q64QDDSRBVTYSWT8C0X2HVB61QYSZM1B1W9JVCE0C0"
),
WireFeeSignatureVector(
WireFee(
wireFee = Amount("TESTKUDOS", 0, 1000000),
closingFee = Amount("TESTKUDOS", 0, 1000000),
startStamp = Timestamp(1672542000000),
endStamp = Timestamp(1704078000000),
signature = "9YWES9YPR2W5ACCYE4ZE4S3PE62CVX01AXXSC9KT9PZ6B52D5GSBP4DG95Y024EDE5HFGP6FEZVPKQM8PA6J9WD2NXW3QBA34MEV61R"
), "FWPD4E312RB8XZ22FGHCZGV2YPT7AX02XVRZEC7F53QKZJHY7H50"
)
)
for (v in vectors) {
// verification succeeds as expected
assertTrue(signature.verifyWireFee(type, v.wireFee, v.masterPub))
// different type fails verification
assertFalse(signature.verifyWireFee("foo", v.wireFee, v.masterPub))
// different WireFee wireFee fails verification
var wireFee = v.wireFee.copy(wireFee = Amount("TESTKUDOS", 0, 100))
assertFalse(signature.verifyWireFee(type, wireFee, v.masterPub))
// different WireFee closingFee fails verification
wireFee = v.wireFee.copy(closingFee = Amount("TESTKUDOS", 0, 100))
assertFalse(signature.verifyWireFee(type, wireFee, v.masterPub))
// different WireFee startStamp fails verification
wireFee = v.wireFee.copy(startStamp = Timestamp(v.wireFee.startStamp.ms + 1000))
assertFalse(signature.verifyWireFee(type, wireFee, v.masterPub))
// different WireFee endStamp fails verification
wireFee = v.wireFee.copy(endStamp = Timestamp(v.wireFee.endStamp.ms + 1000))
assertFalse(signature.verifyWireFee(type, wireFee, v.masterPub))
// different WireFee signature fails verification
val size = Base32Crockford.calculateDecodedDataLength(v.wireFee.signature.length)
wireFee = v.wireFee.copy(signature = Base32Crockford.encode(Random.nextBytes(size)))
assertFalse(signature.verifyWireFee(type, wireFee, v.masterPub))
// startStamp changes below one second don't affect verification
wireFee = v.wireFee.copy(startStamp = Timestamp(v.wireFee.startStamp.ms + 999))
assertTrue(signature.verifyWireFee(type, wireFee, v.masterPub))
// startStamp changes below one second don't affect verification
wireFee = v.wireFee.copy(endStamp = Timestamp(v.wireFee.endStamp.ms + 999))
assertTrue(signature.verifyWireFee(type, wireFee, v.masterPub))
// different masterPub fails verification
val masterPub = Base32Crockford.encode(Random.nextBytes(32))
assertFalse(signature.verifyWireFee(type, v.wireFee, masterPub))
}
}
private class DenominationRecordSignatureVector(val denominationRecord: DenominationRecord, val masterPub: String)
@Test
fun testVerifyDenominationRecordSignature() {
val vectors = listOf(
DenominationRecordSignatureVector(
DenominationRecord(
value = Amount("TESTKUDOS", 4, 0),
denomPub = "020000XX26WN5X7ECKERVGBWTFM3KJ7AT0N8T7RQB7W7G4Q5K0W1BT8QFQBMMTR925TC6RX4QGVVVXH2ZMJVWDRR58BRXNDCFBZTH7RNS1KVWZQGEWME1D6QX79R0V6V9S0NC9H8YP0W6MJD7YSV5VQZWCR1JXRTSS0HPHDV4V6AVX34TSMHGRDQXZYVTEBGVWNF8TNR2P5296TCZR0G2001",
denomPubHash = "MY54RXQ1WTZPFD3VZ4QJH6RHFPTYE78Y4DQ3GANTWK2Z0SQ99AK90K5H0P419EY4QWV6S4Q6QG52HYFCVRCPEQNG22RM3E7XW2YFJ9R",
feeWithdraw = Amount("TESTKUDOS", 0, 3000000),
feeDeposit = Amount("TESTKUDOS", 0, 3000000),
feeRefresh = Amount("TESTKUDOS", 0, 4000000),
feeRefund = Amount("TESTKUDOS", 0, 2000000),
stampStart = Timestamp(1593449948000),
stampExpireWithdraw = Timestamp(1594054748000),
stampExpireLegal = Timestamp(1688057948000),
stampExpireDeposit = Timestamp(1656521948000),
masterSig = "2PEF4EHTKE2R89KHQBZ6NAQW34YEMAP044DTJXJ9TFX224YW07BB2X1VHEYH425N2RNDZS9XFEAQK54GV6Q6CTNSE1Z038TZ4V3MM1R",
status = Unverified, isOffered = false, isRevoked = false, exchangeBaseUrl = "example.org"
),
"C5K3YXPHSDVYPCB79D5AC4FYCKQ9D0DN3N3MBA5D54BG42SX0ZRG"
),
DenominationRecordSignatureVector(
DenominationRecord(
value = Amount("TESTKUDOS", 0, 10000000),
denomPub = "020000XWWS2DFXM1G8YR6NXVF07R0DH7GRE1J7ZC2YENN7Q60ZHX9S7FEVQDBFP1041DN0GFASZR6A7RSJ3EYRV1YD5ACAZRDQNH5P5KEBTSK5XA76YYWTW5VA7N1V1VRVF0CF7VZ8GSJNQ91FSJGNKGR82DB7H82TPAGMR1B5DG5SY2WP3NB5YJD90H64E09C0YC8FCCWRGC09HFNPG2001",
denomPubHash = "J73HZJTR76GRZKBEKQC4X289056V5RMY4JS932XM8BAENQ83YAF9W2WYKRBN87TN8ENXP61JC7HMC7PYK9MZ8S289FCD07EM95AJGMR",
feeWithdraw = Amount("TESTKUDOS", 0, 1000000),
feeDeposit = Amount("TESTKUDOS", 0, 1000000),
feeRefresh = Amount("TESTKUDOS", 0, 3000000),
feeRefund = Amount("TESTKUDOS", 0, 1000000),
stampStart = Timestamp(1593450307000),
stampExpireWithdraw = Timestamp(1594055107000),
stampExpireLegal = Timestamp(1688058307000),
stampExpireDeposit = Timestamp(1656522307000),
masterSig = "HPBAY19C1B5H3FAYWKRQFS8VC693658SNSK3BB304BNAG950BS881GMVPVN0YBG67K9J9E4A9BFN7VAQEY1D5G6YAGVPFQWX0GRQ62G",
status = Unverified, isOffered = false, isRevoked = false, exchangeBaseUrl = "example.org"
),
"NF8G14QFVWJSQPNFC3M2JKNMGJESS8ZWZX9V43PG40YXWRWA88VG"
)
)
for (v in vectors) {
// verification succeeds as expected
assertTrue(signature.verifyDenominationRecord(v.denominationRecord, v.masterPub))
// different masterPub fails verification
val masterPub = Base32Crockford.encode(Random.nextBytes(32))
assertFalse(signature.verifyDenominationRecord(v.denominationRecord, masterPub))
// different value fails verification
val value = v.denominationRecord.value + Amount.min(v.denominationRecord.value.currency)
assertFalse(
signature.verifyDenominationRecord(
v.denominationRecord.copy(value = value),
v.masterPub
)
)
// different denomPubHash fails verification
val calculatedDenomPubHash = crypto.sha512(Base32Crockford.decode(v.denominationRecord.denomPub))
assertEquals(v.denominationRecord.denomPubHash, Base32Crockford.encode(calculatedDenomPubHash))
val denomPubHash = Base32Crockford.encode(Random.nextBytes(calculatedDenomPubHash.size))
assertFalse(
signature.verifyDenominationRecord(
v.denominationRecord.copy(denomPubHash = denomPubHash),
v.masterPub
)
)
// different feeWithdraw fails verification
val feeWithdraw = v.denominationRecord.feeWithdraw + Amount.min(v.denominationRecord.feeWithdraw.currency)
assertFalse(
signature.verifyDenominationRecord(
v.denominationRecord.copy(feeWithdraw = feeWithdraw),
v.masterPub
)
)
// different feeDeposit fails verification
val feeDeposit = v.denominationRecord.feeDeposit + Amount.min(v.denominationRecord.feeDeposit.currency)
assertFalse(
signature.verifyDenominationRecord(
v.denominationRecord.copy(feeDeposit = feeDeposit),
v.masterPub
)
)
// different feeRefresh fails verification
val feeRefresh = v.denominationRecord.feeRefresh + Amount.min(v.denominationRecord.feeRefresh.currency)
assertFalse(
signature.verifyDenominationRecord(
v.denominationRecord.copy(feeRefresh = feeRefresh),
v.masterPub
)
)
// different feeRefund fails verification
val feeRefund = v.denominationRecord.feeRefund + Amount.min(v.denominationRecord.feeRefund.currency)
assertFalse(
signature.verifyDenominationRecord(
v.denominationRecord.copy(feeRefund = feeRefund),
v.masterPub
)
)
// different stampStart fails verification
val stampStart = Timestamp(v.denominationRecord.stampStart.ms + 1000)
assertFalse(
signature.verifyDenominationRecord(
v.denominationRecord.copy(stampStart = stampStart),
v.masterPub
)
)
// different stampExpireWithdraw fails verification
val stampExpireWithdraw = Timestamp(v.denominationRecord.stampExpireWithdraw.ms + 1000)
assertFalse(
signature.verifyDenominationRecord(
v.denominationRecord.copy(stampExpireWithdraw = stampExpireWithdraw),
v.masterPub
)
)
// different stampExpireLegal fails verification
val stampExpireLegal = Timestamp(v.denominationRecord.stampExpireLegal.ms + 1000)
assertFalse(
signature.verifyDenominationRecord(
v.denominationRecord.copy(stampExpireLegal = stampExpireLegal),
v.masterPub
)
)
// different stampExpireDeposit fails verification
val stampExpireDeposit = Timestamp(v.denominationRecord.stampExpireDeposit.ms + 1000)
assertFalse(
signature.verifyDenominationRecord(
v.denominationRecord.copy(stampExpireDeposit = stampExpireDeposit),
v.masterPub
)
)
// different masterPub fails verification
val size = Base32Crockford.calculateDecodedDataLength(v.denominationRecord.masterSig.length)
val masterSig = Base32Crockford.encode(Random.nextBytes(size))
assertFalse(
signature.verifyDenominationRecord(
v.denominationRecord.copy(masterSig = masterSig),
v.masterPub
)
)
// different status does not affect verification
assertTrue(
signature.verifyDenominationRecord(
v.denominationRecord.copy(status = VerifiedBad),
v.masterPub
)
)
// different exchangeBaseUrl does not affect verification
assertTrue(
signature.verifyDenominationRecord(
v.denominationRecord.copy(exchangeBaseUrl = "foo.bar"),
v.masterPub
)
)
}
}
private class WireAccountSignatureVector(val paytoUri: String, val signature: String, val masterPub: String)
@Test
fun testVerifyWireAccount() {
val paytoUri = "payto://x-taler-bank/localhost/Exchange"
val vectors = listOf(
WireAccountSignatureVector(
paytoUri,
"7THNYN5G12GXZABHP187XJZ3ACTDKAWGHWYM2ERA1VGE4JMGPADXT37ZM8D4DVAQTSP8CR61VAD4ZZSWKRPP5KQ12JCTVHCKDD3KA3R",
"QPJSEA4SM8E67106C6MN2TMG4308J20C1T0D411WED1FJ00VF8ZG"
),
WireAccountSignatureVector(
paytoUri,
"6JJDJ0HG3AGRTEY1FFGHR89367GPE4FS7TC8Z26N34PHFAMSRXQ4FA7P96CDS6625SRNAN4DY1NK4TNBQXKRXQ9QR82HEVCB2FF1E18",
"8QBE0SRR84GWJ1FX2QCGGNRZTWA2FCV6YQC98Q26DRRJ0QBQE930"
),
WireAccountSignatureVector(
paytoUri,
"X5EYQJ388P8AH1PPYD2GFQ9Y1NGA7HV0TXAW6GJ7C0D6R6GAY0059HCDBE98TKJJT6MB1S660FV13DV46JDKJ622MR961XVGP6DG618",
"802M037TN8GHBXEGBPC7J41HJC06TWBWXYH36AYQHRJ7NVHJBQQ0"
)
)
for (v in vectors) {
// verification succeeds as expected
assertTrue(signature.verifyWireAccount(v.paytoUri, v.signature, v.masterPub))
// different paytoUri fails verification
assertFalse(signature.verifyWireAccount("foo", v.signature, v.masterPub))
// different paytoUri fails verification
val size = Base32Crockford.calculateDecodedDataLength(v.signature.length)
val sig = Base32Crockford.encode(Random.nextBytes(size))
assertFalse(signature.verifyWireAccount(v.paytoUri, sig, v.masterPub))
// different paytoUri fails verification
val masterPub = Base32Crockford.encode(Random.nextBytes(32))
assertFalse(signature.verifyWireAccount(v.paytoUri, sig, masterPub))
}
}
}