nim-libp2p/tests/testecnist.nim

## Nim-Libp2p
## Copyright (c) 2018 Status Research & Development GmbH
## Licensed under either of
##  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
##  * MIT license ([LICENSE-MIT](LICENSE-MIT))
## at your option.
## This file may not be copied, modified, or distributed except according to
## those terms.
import unittest
import nimcrypto/utils
import ../libp2p/crypto/ecnist

const
  TestsCount = 10 # number of random tests

  # Test vectors obtained from BearSSL test vectors (test_crypto.c) by
  # conversion of raw values to ASN.1 DER binary encoded form.
  SignatureSecKeys = [
    """30770201010420C9AFA9D845BA75166B5C215767B1D6934E50C3DB36E89B127B
       8A622B120F6721A00A06082A8648CE3D030107A1440342000460FED4BA255A9D
       31C961EB74C6356D68C049B8923B61FA6CE669622E60F29FB67903FE1008B8BC
       99A41AE9E95628BC64F2F1B20C2D7E9F5177A3C294D4462299""",
    """30770201010420C9AFA9D845BA75166B5C215767B1D6934E50C3DB36E89B127B
       8A622B120F6721A00A06082A8648CE3D030107A1440342000460FED4BA255A9D
       31C961EB74C6356D68C049B8923B61FA6CE669622E60F29FB67903FE1008B8BC
       99A41AE9E95628BC64F2F1B20C2D7E9F5177A3C294D4462299""",
    """3081A402010104306B9D3DAD2E1B8C1C05B19875B6659F4DE23C3B667BF297BA
       9AA47740787137D896D5724E4C70A825F872C9EA60D2EDF5A00706052B810400
       22A16403620004EC3A4E415B4E19A4568618029F427FA5DA9A8BC4AE92E02E06
       AAE5286B300C64DEF8F0EA9055866064A254515480BC138015D9B72D7D57244E
       A8EF9AC0C621896708A59367F9DFB9F54CA84B3F1C9DB1288B231C3AE0D4FE73
       44FD2533264720""",
    """3081A402010104306B9D3DAD2E1B8C1C05B19875B6659F4DE23C3B667BF297BA
       9AA47740787137D896D5724E4C70A825F872C9EA60D2EDF5A00706052B810400
       22A16403620004EC3A4E415B4E19A4568618029F427FA5DA9A8BC4AE92E02E06
       AAE5286B300C64DEF8F0EA9055866064A254515480BC138015D9B72D7D57244E
       A8EF9AC0C621896708A59367F9DFB9F54CA84B3F1C9DB1288B231C3AE0D4FE73
       44FD2533264720""",
    """3081DC020101044200FAD06DAA62BA3B25D2FB40133DA757205DE67F5BB0018F
       EE8C86E1B68C7E75CAA896EB32F1F47C70855836A6D16FCC1466F6D8FBEC67DB
       89EC0C08B0E996B83538A00706052B81040023A18189038186000401894550D0
       785932E00EAA23B694F213F8C3121F86DC97A04E5A7167DB4E5BCD371123D46E
       45DB6B5D5370A7F20FB633155D38FFA16D2BD761DCAC474B9A2F5023A4004931
       01C962CD4D2FDDF782285E64584139C2F91B47F87FF82354D6630F746A28A0DB
       25741B5B34A828008B22ACC23F924FAAFBD4D33F81EA66956DFEAA2BFDFCF5""",
    """3081DC020101044200FAD06DAA62BA3B25D2FB40133DA757205DE67F5BB0018F
       EE8C86E1B68C7E75CAA896EB32F1F47C70855836A6D16FCC1466F6D8FBEC67DB
       89EC0C08B0E996B83538A00706052B81040023A18189038186000401894550D0
       785932E00EAA23B694F213F8C3121F86DC97A04E5A7167DB4E5BCD371123D46E
       45DB6B5D5370A7F20FB633155D38FFA16D2BD761DCAC474B9A2F5023A4004931
       01C962CD4D2FDDF782285E64584139C2F91B47F87FF82354D6630F746A28A0DB
       25741B5B34A828008B22ACC23F924FAAFBD4D33F81EA66956DFEAA2BFDFCF5"""
  ]

  SignaturePubKeys = [
    """3059301306072A8648CE3D020106082A8648CE3D0301070342000460FED4BA25
       5A9D31C961EB74C6356D68C049B8923B61FA6CE669622E60F29FB67903FE1008
       B8BC99A41AE9E95628BC64F2F1B20C2D7E9F5177A3C294D4462299""",
    """3059301306072A8648CE3D020106082A8648CE3D0301070342000460FED4BA25
       5A9D31C961EB74C6356D68C049B8923B61FA6CE669622E60F29FB67903FE1008
       B8BC99A41AE9E95628BC64F2F1B20C2D7E9F5177A3C294D4462299""",
    """3076301006072A8648CE3D020106052B8104002203620004EC3A4E415B4E19A4
       568618029F427FA5DA9A8BC4AE92E02E06AAE5286B300C64DEF8F0EA90558660
       64A254515480BC138015D9B72D7D57244EA8EF9AC0C621896708A59367F9DFB9
       F54CA84B3F1C9DB1288B231C3AE0D4FE7344FD2533264720""",
    """3076301006072A8648CE3D020106052B8104002203620004EC3A4E415B4E19A4
       568618029F427FA5DA9A8BC4AE92E02E06AAE5286B300C64DEF8F0EA90558660
       64A254515480BC138015D9B72D7D57244EA8EF9AC0C621896708A59367F9DFB9
       F54CA84B3F1C9DB1288B231C3AE0D4FE7344FD2533264720""",
    """30819B301006072A8648CE3D020106052B81040023038186000401894550D078
       5932E00EAA23B694F213F8C3121F86DC97A04E5A7167DB4E5BCD371123D46E45
       DB6B5D5370A7F20FB633155D38FFA16D2BD761DCAC474B9A2F5023A400493101
       C962CD4D2FDDF782285E64584139C2F91B47F87FF82354D6630F746A28A0DB25
       741B5B34A828008B22ACC23F924FAAFBD4D33F81EA66956DFEAA2BFDFCF5""",
    """30819B301006072A8648CE3D020106052B81040023038186000401894550D078
       5932E00EAA23B694F213F8C3121F86DC97A04E5A7167DB4E5BCD371123D46E45
       DB6B5D5370A7F20FB633155D38FFA16D2BD761DCAC474B9A2F5023A400493101
       C962CD4D2FDDF782285E64584139C2F91B47F87FF82354D6630F746A28A0DB25
       741B5B34A828008B22ACC23F924FAAFBD4D33F81EA66956DFEAA2BFDFCF5"""
  ]

  SignatureMessages = [
    "sample", "test", "sample", "test", "sample", "test"
  ]

  SignatureVectors = [
    """3046022100EFD48B2AACB6A8FD1140DD9CD45E81D69D2C877B56AAF991C34D0E
       A84EAF3716022100F7CB1C942D657C41D436C7A1B6E29F65F3E900DBB9AFF406
       4DC4AB2F843ACDA8""",
    """3045022100F1ABB023518351CD71D881567B1EA663ED3EFCF6C5132B354F28D3
       B0B7D383670220019F4113742A2B14BD25926B49C649155F267E60D3814B4C0C
       C84250E46F0083""",
    """3065023021B13D1E013C7FA1392D03C5F99AF8B30C570C6F98D4EA8E354B63A2
       1D3DAA33BDE1E888E63355D92FA2B3C36D8FB2CD023100F3AA443FB107745BF4
       BD77CB3891674632068A10CA67E3D45DB2266FA7D1FEEBEFDC63ECCD1AC42EC0
       CB8668A4FA0AB0""",
    """306402306D6DEFAC9AB64DABAFE36C6BF510352A4CC27001263638E5B16D9BB5
       1D451559F918EEDAF2293BE5B475CC8F0188636B02302D46F3BECBCC523D5F1A
       1256BF0C9B024D879BA9E838144C8BA6BAEB4B53B47D51AB373F9845C0514EEF
       B14024787265""",
    """308187024201511BB4D675114FE266FC4372B87682BAECC01D3CC62CF2303C92
       B3526012659D16876E25C7C1E57648F23B73564D67F61C6F14D527D549728104
       21E7D87589E1A702414A171143A83163D6DF460AAF61522695F207A58B95C064
       4D87E52AA1A347916E4F7A72930B1BC06DBE22CE3F58264AFD23704CBB63B29B
       931F7DE6C9D949A7ECFC""",
    """30818702410E871C4A14F993C6C7369501900C4BC1E9C7B0B4BA44E04868B30B
       41D8071042EB28C4C250411D0CE08CD197E4188EA4876F279F90B3D8D74A3C76
       E6F1E4656AA8024200CD52DBAA33B063C3A6CD8058A1FB0A46A4754B034FCC64
       4766CA14DA8CA5CA9FDE00E88C1AD60CCBA759025299079D7A427EC3CC5B619B
       FBC828E7769BCD694E86"""
  ]

  # This test vectors was generated using Go `crypto/ecdsa.go`.
  # Its non-deterministic ECDSA signatures.

  NDPrivateKeys = [
    """3077020101042068A2F6BCCA486C323C883328D890BA1C64A0B0CC9A8527D681
       0AE8FDBB1B695CA00A06082A8648CE3D030107A144034200048EA1E33E80527E
       FCAFB3E8924DD0CB3CF37DC406C65F6D69D6117B3F08A51E5280E2FE8AFAB32A
       3EB1F4701BC7171FA62DDF46764A00E4024F286EADF3691FA0""",
    """3081A402010104301BC69416E84B85827018F7FC9EFCB6E426C1369ECA33CF45
       10DBE38E065D5F78CB8F75185DCF2DBF5E239F18C424CF23A00706052B810400
       22A164036200040B63293E10AE9348832D96F3EC1A4789D7F4F3F4F16E119E52
       4227768FED3787D2FDEE6F4B9F2749EDBF4A0F1F72CACD1C7B3E9A7E2BD6E611
       90D71133C55E479D7F73EECD73CE9BF471CDDAE9C234F394FAC6258E3B877FE2
       5D6397D4B266CD""",
    """3081DC020101044201251023BBE7AA0121F34F39BD409021C4C3BB323E4729BF
       D6842103C5628EC88F081BD01A8B27F25268CB4CFE46AE2741925EBCA3FA95C1
       2A6D32AF161AEE2DB806A00706052B81040023A18189038186000400887F1A85
       48791B40C677D80E70F5DFE84B50F301C4067222BDF1EE75B805227287A309C2
       0C7E33E6FE93F651D6ABCE76E644DC16B220E34E68DCB5858262B00A07015923
       7B66B29CABBDC352420E3652F6DCF6EB4EC6E08B0957EDC9ACC35CD684B99A78
       E638C7937608749855C98C147DD46EE776234BA781D31C4FB05BB1D3648027"""
  ]

  NDPublicKeys = [
    """3059301306072A8648CE3D020106082A8648CE3D030107034200048EA1E33E80
       527EFCAFB3E8924DD0CB3CF37DC406C65F6D69D6117B3F08A51E5280E2FE8AFA
       B32A3EB1F4701BC7171FA62DDF46764A00E4024F286EADF3691FA0""",
    """3076301006072A8648CE3D020106052B81040022036200040B63293E10AE9348
       832D96F3EC1A4789D7F4F3F4F16E119E524227768FED3787D2FDEE6F4B9F2749
       EDBF4A0F1F72CACD1C7B3E9A7E2BD6E61190D71133C55E479D7F73EECD73CE9B
       F471CDDAE9C234F394FAC6258E3B877FE25D6397D4B266CD""",
    """30819B301006072A8648CE3D020106052B81040023038186000400887F1A8548
       791B40C677D80E70F5DFE84B50F301C4067222BDF1EE75B805227287A309C20C
       7E33E6FE93F651D6ABCE76E644DC16B220E34E68DCB5858262B00A070159237B
       66B29CABBDC352420E3652F6DCF6EB4EC6E08B0957EDC9ACC35CD684B99A78E6
       38C7937608749855C98C147DD46EE776234BA781D31C4FB05BB1D3648027"""
  ]

  NDMessages = [
    "sample", "sample", "sample", "test", "test", "test",
    "sample", "sample", "sample", "test", "test", "test",
    "sample", "sample", "sample", "test", "test", "test",
  ]

  NDSignatures = [
    """304502210088C7E8176CBA8EBE0672391AB698101FC78F187AE029ACF7EA846633
       2892B59B022078DA1A6792B7450084085881A482313C846F66162C15D9B50CBC2F
       19427ACC9C""",
    """30450221008C4CD62BB25709AE0F060AAACF6FE63B87FACE3DA2B77EE545AC2289
       7E250897022060A59D99C681DD736A6C18DC4ABF3635E749886A748908CB4E8E77
       457212FC47""",
    """3046022100F86C58A4607DDBD3E2C780B4FCB64848F9216D22FFBCE898BA8F9D05
       3EAF656E022100A5C2688897C0CC471602FF86D445B09EFB12EC64C75D9096A528
       1D90948952DE""",
    """304402206CCE912F77B6E20709CD2A7D7C5E046674DBC958C247B1E3F7AEC766CF
       A8EF72022056BF2A26EBD7AE4DA3080C75A2B2F247A941B87C941DC91F4FCBF19C
       8B106DEC""",
    """3046022100D940CBF42025B33E23C67390CBF160F78A6FE76DA6721F6551F4CA67
       E0C8D88D022100B51E501945EF340DBB5440D44242E71F67835E5B46C5F3E19FB8
       F5C24F036DA2""",
    """3045022100A6BE7BADFD38D2ABEF78CE48471DA0D6580E33C2BAF4B48D1155247D
       B5645E1E02206505D23CD41C10D1E55878FD9CF4072420F2DF7212728604F72DC2
       B1BB8DFAB0""",
    """306402307566A2ACC93DF36170A0A2A98CA18A979E5F3052488FAA272DDEE8306A
       CD6B48259E2BE3170346D3EFAA69B973909BA702300B066D618D3D1FB61328594B
       79C45F1AAE4F8C99F8FAED79A9ED8C729BC1932F11E5D05A4410FABF394CCFC6AA
       9A6AB9""",
    """3066023100AF3FCC8CCF5B2256ABF638BC18001985F4A8D9845EC6E1BE8E708D21
       E60256E8CD00833EFC0F2E793BDC9B433482A09A023100DBA731B3D6B14CE8EE96
       EDC083B97A01CE46A4B2F0583FCB9A2B7F12AC62985942DF386579E2CBBAF75C90
       C468B7D1CB""",
    """3065023100E9022EB07F766FCC68D345CF758FBC54EFCAC086CD8625DFDE588F67
       D06A4357DE5F9ED39298F5D9299C7AB24E6E5984023006838D2A052990DB3A5BCC
       12CAE45863DEC9023625C12D143DD4F75FCC50625FB35108BA2090C1FCAC48353F
       54A03021""",
    """3066023100C77C91B69D2064DD312A149C8074DCAC7FC734EB70AF3FF52F7F7D6E
       4253C163FF1A574ADC30C58DDD58CF06F883B880023100F780E8D1F094F6112EC7
       8317CF1BDEB068D1BB472D8CB6E49A707409F0A22C867A254EE80F8949260E31AB
       5AF9AD4060""",
    """3065023100D9027A9485BAB5BE90F2D9FCB14A494CA8B829C7A815F40DD17235D2
       4296927122CBC11A1417D9856E815DF81AF3950202305A617D78CEA2586A55EB85
       63B3563385753A6F84D2AF02C61F889DF6EDD6F1D0A3DE07BD859D7CB1D8264726
       696130D6""",
    """306502307F476CBE232E1BFED31061713B5611852B730ACB4053C6AB2D85C4563A
       581A773B4A76F65D8DDB76D09BC038AEB3B2AC023100C778A6DCB18451A251DD9D
       BD55F18CC45FAC16EA458270A6C7B8E0D7BC91264C66CDDB8013C17EC98365B0FA
       6B0049AA""",
    """30818802420137C1D1943C9ABCA116D87B46C2D7A146AE358F1378ACA58D405735
       20B6BEDECDC500EF9172B363B862734C528ED01484822E168FB6BFDB2342A0AB45
       8DD3B7BB8B024200FEDC89C8BF2611ABD27FDAD58E5DAAC9DD744D744017E29002
       573D0F6F8A6B13D6901ADC07D5C6D1746910340D8C2C0D6109F939C0172D1F229A
       818E0C6643E774""",
    """3081880242012173FFB97D1318F53F50818DAADB5B600ED928F39CD98F712C44BB
       810AB4EE74D02C385DFEBEFCC2DC56DE4EB2794681EC0345B170C3BEFCDF2A1693
       9DC6DDF58D024201724AB5BED8F88B30E84CB0A2ED4BDD12EB2222C9E4FC0897B9
       4390FD44FFE118A7EDB948E1AB7FDB1A19C920A4160DA4596DA5D2731D10143DE5
       103FFF93A51EF6""",
    """30818602416BADAFFFF67959764ADC0F45AB0911DE85D0FC0608A0AD60C14456E1
       01CBF51CBBEB9D0B2E71EBE3EC1B4D45851ED71CAFE0A83DF593C803350A6BB36E
       0EB18A21024169E20B6463357D4363BE05DF3B4FF5BC21FFAC652C7005E0314A3D
       A443D3B537608139CE14A94C7C3A53063910F1062E385A4464022C5E662CC53833
       EB870435E2""",
    """308187024158F13B64E188FF6BB766D129E087420D2070752D1E1F29BF64EE13C9
       5FF222D7E5DF595EC21FED066A83C0027CE60C1A7BD92B4641E34CBB34ECFDE5F6
       6762659D024201105D3482639186FC0322933998FE0E71E0BA359ED9BB8DE127E5
       73A88311F735FFD87CF279B667A2AF681122EDA9F7FC7784E0E942A287C917C7EC
       DFE2F8E6368C""",
    """30818802420145D48CA13B92808CAA7959574CDACF9959ED72A9ADC6FFCA0FD417
       0F2EFD854C8C479099F0784D717A56EC9F5777A0096CD251F96F2CCB6061D2C8CA
       CD09EB606C0242011683C215C7DE99E3D4FF8D543C6CFDCC49577A8978D10C818C
       002A51D7C8D7FBC1814D82EDA9521F19C8895DCE6CAE97F8926CCCE3863D5E120F
       77B6D2C891AB7F""",
    """308187024200F235341F4C39641FFBA7FFB1551C36E34F606F4C2970DE00096A37
       722D83D07D0ADFB3D33492F2645B15A19FFAF6424A03487CE2E099069006037956
       9972DC798A02412B6F169D23303B0C7764620514EF308F010EFB4E3A69912967EE
       303B177FA12B58C4602183BCB58D5DB30917584EDFE4BE4B42EC0EE3E3FB75BDA8
       C05CB9C3A2DA"""
  ]

suite "EC NIST-P256/384/521 test suite":

  test "[secp256r1] Private key serialize/deserialize test":
    for i in 0..<TestsCount:
      var rkey1, rkey2: EcPrivateKey
      var skey2 = newSeq[byte](256)
      var key = EcPrivateKey.random(Secp256r1)
      var skey1 = key.getBytes()
      check:
        key.toBytes(skey2) > 0
      check:
        rkey1.init(skey1) == Asn1Status.Success
        rkey2.init(skey2) == Asn1Status.Success
      var rkey3 = EcPrivateKey.init(skey1)
      var rkey4 = EcPrivateKey.init(skey2)
      check:
        rkey1 == key
        rkey2 == key
        rkey3 == key
        rkey4 == key

  test "[secp256r1] Public key serialize/deserialize test":
    for i in 0..<TestsCount:
      var rkey1, rkey2: EcPublicKey
      var skey2 = newSeq[byte](256)
      var pair = EcKeyPair.random(Secp256r1)
      var skey1 = pair.pubkey.getBytes()
      check:
        pair.pubkey.toBytes(skey2) > 0
        rkey1.init(skey1) == Asn1Status.Success
        rkey2.init(skey2) == Asn1Status.Success
      var rkey3 = EcPublicKey.init(skey1)
      var rkey4 = EcPublicKey.init(skey2)
      check:
        rkey1 == pair.pubkey
        rkey2 == pair.pubkey
        rkey3 == pair.pubkey
        rkey4 == pair.pubkey

  test "[secp256r1] ECDHE test":
    for i in 0..<TestsCount:
      var kp1 = EcKeyPair.random(Secp256r1)
      var kp2 = EcKeyPair.random(Secp256r1)
      var shared1 = kp2.pubkey.scalarMul(kp1.seckey)
      var shared2 = kp1.pubkey.scalarMul(kp2.seckey)
      check:
        isNil(shared1) == false
        isNil(shared2) == false
        shared1 == shared2

  test "[secp256r1] ECDSA test vectors":
    for i in 0..<2:
      var sk = EcPrivateKey.init(stripSpaces(SignatureSecKeys[i]))
      var expectpk = EcPublicKey.init(stripSpaces(SignaturePubKeys[i]))
      var checkpk = sk.getKey()
      check expectpk == checkpk
      var checksig = sk.sign(SignatureMessages[i])
      var expectsig = EcSignature.init(stripSpaces(SignatureVectors[i]))
      check:
        checksig == expectsig
        checksig.verify(SignatureMessages[i], checkpk) == true
      checksig.buffer[len(checksig.buffer) - 1] = 0x80'u8
      check checksig.verify(SignatureMessages[i], checkpk) == false

  test "[secp256r1] ECDSA non-deterministic test vectors":
    var sk = EcPrivateKey.init(stripSpaces(NDPrivateKeys[0]))
    var pk = EcPublicKey.init(stripSpaces(NDPublicKeys[0]))
    var checkpk = sk.getKey()
    check pk == checkpk
    for i in 0..<6:
      var message = NDMessages[i]
      var checksig = EcSignature.init(stripSpaces(NDSignatures[i]))
      check checksig.verify(message, pk) == true
      checksig.buffer[len(checksig.buffer) - 1] = 0x80'u8
      check checksig.verify(message, pk) == false

  test "[secp256r1] Generate/Sign/Serialize/Deserialize/Verify test":
    var message = "message to sign"
    for i in 0..<TestsCount:
      var kp = EcKeyPair.random(Secp256r1)
      var sig = kp.seckey.sign(message)
      var sersk = kp.seckey.getBytes()
      var serpk = kp.pubkey.getBytes()
      var sersig = sig.getBytes()
      var seckey = EcPrivateKey.init(sersk)
      var pubkey = EcPublicKey.init(serpk)
      var csig = EcSignature.init(sersig)
      check csig.verify(message, pubkey) == true
      csig.buffer[len(csig.buffer) - 1] = 0x80'u8
      check csig.verify(message, pubkey) == false

  test "[secp384r1] Private key serialize/deserialize test":
    for i in 0..<TestsCount:
      var rkey1, rkey2: EcPrivateKey
      var skey2 = newSeq[byte](256)
      var key = EcPrivateKey.random(Secp384r1)
      var skey1 = key.getBytes()
      check:
        key.toBytes(skey2) > 0
      check:
        rkey1.init(skey1) == Asn1Status.Success
        rkey2.init(skey2) == Asn1Status.Success
      var rkey3 = EcPrivateKey.init(skey1)
      var rkey4 = EcPrivateKey.init(skey2)
      check:
        rkey1 == key
        rkey2 == key
        rkey3 == key
        rkey4 == key

  test "[secp384r1] Public key serialize/deserialize test":
    for i in 0..<TestsCount:
      var rkey1, rkey2: EcPublicKey
      var skey2 = newSeq[byte](256)
      var pair = EcKeyPair.random(Secp384r1)
      var skey1 = pair.pubkey.getBytes()
      check:
        pair.pubkey.toBytes(skey2) > 0
        rkey1.init(skey1) == Asn1Status.Success
        rkey2.init(skey2) == Asn1Status.Success
      var rkey3 = EcPublicKey.init(skey1)
      var rkey4 = EcPublicKey.init(skey2)
      check:
        rkey1 == pair.pubkey
        rkey2 == pair.pubkey
        rkey3 == pair.pubkey
        rkey4 == pair.pubkey

  test "[secp384r1] ECDHE test":
    for i in 0..<TestsCount:
      var kp1 = EcKeyPair.random(Secp384r1)
      var kp2 = EcKeyPair.random(Secp384r1)
      var shared1 = kp2.pubkey.scalarMul(kp1.seckey)
      var shared2 = kp1.pubkey.scalarMul(kp2.seckey)
      check:
        isNil(shared1) == false
        isNil(shared2) == false
        shared1 == shared2

  test "[secp384r1] ECDSA test vectors":
    for i in 2..<4:
      var sk = EcPrivateKey.init(stripSpaces(SignatureSecKeys[i]))
      var expectpk = EcPublicKey.init(stripSpaces(SignaturePubKeys[i]))
      var checkpk = sk.getKey()
      check expectpk == checkpk
      var checksig = sk.sign(SignatureMessages[i])
      var expectsig = EcSignature.init(stripSpaces(SignatureVectors[i]))
      check:
        checksig == expectsig
        checksig.verify(SignatureMessages[i], checkpk) == true
      checksig.buffer[len(checksig.buffer) - 1] = 0x80'u8
      check checksig.verify(SignatureMessages[i], checkpk) == false

  test "[secp384r1] ECDSA non-deterministic test vectors":
    var sk = EcPrivateKey.init(stripSpaces(NDPrivateKeys[1]))
    var pk = EcPublicKey.init(stripSpaces(NDPublicKeys[1]))
    var checkpk = sk.getKey()
    check pk == checkpk
    for i in 6..<12:
      var message = NDMessages[i]
      var checksig = EcSignature.init(stripSpaces(NDSignatures[i]))
      check checksig.verify(message, pk) == true
      checksig.buffer[len(checksig.buffer) - 1] = 0x80'u8
      check checksig.verify(message, pk) == false

  test "[secp384r1] Generate/Sign/Serialize/Deserialize/Verify test":
    var message = "message to sign"
    for i in 0..<TestsCount:
      var kp = EcKeyPair.random(Secp384r1)
      var sig = kp.seckey.sign(message)
      var sersk = kp.seckey.getBytes()
      var serpk = kp.pubkey.getBytes()
      var sersig = sig.getBytes()
      var seckey = EcPrivateKey.init(sersk)
      var pubkey = EcPublicKey.init(serpk)
      var csig = EcSignature.init(sersig)
      check csig.verify(message, pubkey) == true
      csig.buffer[len(csig.buffer) - 1] = 0x80'u8
      check csig.verify(message, pubkey) == false

  test "[secp521r1] Private key serialize/deserialize test":
    for i in 0..<TestsCount:
      var rkey1, rkey2: EcPrivateKey
      var skey2 = newSeq[byte](256)
      var key = EcPrivateKey.random(Secp521r1)
      var skey1 = key.getBytes()
      check:
        key.toBytes(skey2) > 0
      check:
        rkey1.init(skey1) == Asn1Status.Success
        rkey2.init(skey2) == Asn1Status.Success
      var rkey3 = EcPrivateKey.init(skey1)
      var rkey4 = EcPrivateKey.init(skey2)
      check:
        rkey1 == key
        rkey2 == key
        rkey3 == key
        rkey4 == key

  test "[secp521r1] Public key serialize/deserialize test":
    for i in 0..<TestsCount:
      var rkey1, rkey2: EcPublicKey
      var skey2 = newSeq[byte](256)
      var pair = EcKeyPair.random(Secp521r1)
      var skey1 = pair.pubkey.getBytes()
      check:
        pair.pubkey.toBytes(skey2) > 0
        rkey1.init(skey1) == Asn1Status.Success
        rkey2.init(skey2) == Asn1Status.Success
      var rkey3 = EcPublicKey.init(skey1)
      var rkey4 = EcPublicKey.init(skey2)
      check:
        rkey1 == pair.pubkey
        rkey2 == pair.pubkey
        rkey3 == pair.pubkey
        rkey4 == pair.pubkey

  test "[secp521r1] ECDHE test":
    for i in 0..<TestsCount:
      var kp1 = EcKeyPair.random(Secp521r1)
      var kp2 = EcKeyPair.random(Secp521r1)
      var shared1 = kp2.pubkey.scalarMul(kp1.seckey)
      var shared2 = kp1.pubkey.scalarMul(kp2.seckey)
      check:
        isNil(shared1) == false
        isNil(shared2) == false
        shared1 == shared2

  test "[secp521r1] ECDSA test vectors":
    for i in 4..<6:
      var sk = EcPrivateKey.init(stripSpaces(SignatureSecKeys[i]))
      var expectpk = EcPublicKey.init(stripSpaces(SignaturePubKeys[i]))
      var checkpk = sk.getKey()
      check expectpk == checkpk
      var checksig = sk.sign(SignatureMessages[i])
      var expectsig = EcSignature.init(stripSpaces(SignatureVectors[i]))
      check:
        checksig == expectsig
        checksig.verify(SignatureMessages[i], checkpk) == true
      checksig.buffer[len(checksig.buffer) - 1] = 0x80'u8
      check checksig.verify(SignatureMessages[i], checkpk) == false

  test "[secp521r1] ECDSA non-deterministic test vectors":
    var sk = EcPrivateKey.init(stripSpaces(NDPrivateKeys[2]))
    var pk = EcPublicKey.init(stripSpaces(NDPublicKeys[2]))
    var checkpk = sk.getKey()
    check pk == checkpk
    for i in 12..<18:
      var message = NDMessages[i]
      var checksig = EcSignature.init(stripSpaces(NDSignatures[i]))
      check checksig.verify(message, pk) == true
      checksig.buffer[len(checksig.buffer) - 1] = 0x80'u8
      check checksig.verify(message, pk) == false

  test "[secp521r1] Generate/Sign/Serialize/Deserialize/Verify test":
    var message = "message to sign"
    for i in 0..<TestsCount:
      var kp = EcKeyPair.random(Secp521r1)
      var sig = kp.seckey.sign(message)
      var sersk = kp.seckey.getBytes()
      var serpk = kp.pubkey.getBytes()
      var sersig = sig.getBytes()
      var seckey = EcPrivateKey.init(sersk)
      var pubkey = EcPublicKey.init(serpk)
      var csig = EcSignature.init(sersig)
      check csig.verify(message, pubkey) == true
      csig.buffer[len(csig.buffer) - 1] = 0x80'u8
      check csig.verify(message, pubkey) == false