nim-eth/tests/p2p/test_discv5_encoding.nim

231 lines
11 KiB
Nim

import
unittest, options, sequtils, stew/byteutils, stint,
eth/[rlp, keys] , eth/p2p/discoveryv5/[types, encoding, enr]
# According to test vectors:
# https://github.com/ethereum/devp2p/blob/master/discv5/discv5-wire-test-vectors.md
suite "Discovery v5 Packet Encodings":
# TODO: These tests are currently not completely representative for the code
# and thus will not necessarily notice failures. Refactor/restructure code
# where possible to make this more useful.
test "Random Packet":
const
# input
tag = "0x0101010101010101010101010101010101010101010101010101010101010101"
authTag = "0x020202020202020202020202"
randomData = "0x0404040404040404040404040404040404040404040404040404040404040404040404040404040404040404"
# expected output
randomPacketRlp = "0x01010101010101010101010101010101010101010101010101010101010101018c0202020202020202020202020404040404040404040404040404040404040404040404040404040404040404040404040404040404040404"
var data: seq[byte]
data.add(hexToByteArray[tagSize](tag))
data.add(rlp.encode(hexToByteArray[authTagSize](authTag)))
data.add(hexToSeqByte(randomData))
check data == hexToSeqByte(randomPacketRlp)
test "WHOAREYOU Packet":
const
# input
magic = "0x0101010101010101010101010101010101010101010101010101010101010101"
token = "0x020202020202020202020202"
idNonce = "0x0303030303030303030303030303030303030303030303030303030303030303"
enrSeq = 0x01'u64
# expected output
whoareyouPacketRlp = "0x0101010101010101010101010101010101010101010101010101010101010101ef8c020202020202020202020202a0030303030303030303030303030303030303030303030303030303030303030301"
let challenge = Whoareyou(authTag: hexToByteArray[authTagSize](token),
idNonce: hexToByteArray[idNonceSize](idNonce),
recordSeq: enrSeq)
var data = hexToSeqByte(magic)
data.add(rlp.encode(challenge[]))
check data == hexToSeqByte(whoareyouPacketRlp)
test "Authenticated Message Packet":
const
# input
tag = "0x93a7400fa0d6a694ebc24d5cf570f65d04215b6ac00757875e3f3a5f42107903"
authTag = "0x27b5af763c446acd2749fe8e"
idNonce = "0xe551b1c44264ab92bc0b3c9b26293e1ba4fed9128f3c3645301e8e119f179c65"
ephemeralPubkey = "0xb35608c01ee67edff2cffa424b219940a81cf2fb9b66068b1cf96862a17d353e22524fbdcdebc609f85cbd58ebe7a872b01e24a3829b97dd5875e8ffbc4eea81"
authRespCiphertext = "0x570fbf23885c674867ab00320294a41732891457969a0f14d11c995668858b2ad731aa7836888020e2ccc6e0e5776d0d4bc4439161798565a4159aa8620992fb51dcb275c4f755c8b8030c82918898f1ac387f606852"
messageCiphertext = "0xa5d12a2d94b8ccb3ba55558229867dc13bfa3648"
# expected output
authMessageRlp = "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"
let authHeader = AuthHeader(auth: hexToByteArray[authTagSize](authTag),
idNonce: hexToByteArray[idNonceSize](idNonce),
scheme: authSchemeName,
ephemeralKey: hexToByteArray[64](ephemeralPubkey),
response: hexToSeqByte(authRespCiphertext))
var data: seq[byte]
data.add(hexToSeqByte(tag))
data.add(rlp.encode(authHeader))
data.add(hexToSeqByte(messageCiphertext))
check data == hexToSeqByte(authMessageRlp)
test "Message Packet":
const
# input
tag = "0x93a7400fa0d6a694ebc24d5cf570f65d04215b6ac00757875e3f3a5f42107903"
authTag = "0x27b5af763c446acd2749fe8e"
randomData = "0xa5d12a2d94b8ccb3ba55558229867dc13bfa3648"
# expected output
messageRlp = "0x93a7400fa0d6a694ebc24d5cf570f65d04215b6ac00757875e3f3a5f421079038c27b5af763c446acd2749fe8ea5d12a2d94b8ccb3ba55558229867dc13bfa3648"
var data: seq[byte]
data.add(hexToByteArray[tagSize](tag))
data.add(rlp.encode(hexToByteArray[authTagSize](authTag)))
data.add(hexToSeqByte(randomData))
check data == hexToSeqByte(messageRlp)
suite "Discovery v5 Protocol Message Encodings":
test "Ping Request":
var p: PingPacket
p.enrSeq = 1
var reqId: RequestId = 1
check encodePacket(p, reqId).toHex == "01c20101"
test "Pong Response":
var p: PongPacket
p.enrSeq = 1
p.port = 5000
p.ip = @[127.byte, 0, 0, 1]
var reqId: RequestId = 1
check encodePacket(p, reqId).toHex == "02ca0101847f000001821388"
test "FindNode Request":
var p: FindNodePacket
p.distance = 0x0100
var reqId: RequestId = 1
check encodePacket(p, reqId).toHex == "03c401820100"
test "Nodes Response (empty)":
var p: NodesPacket
p.total = 0x1
var reqId: RequestId = 1
check encodePacket(p, reqId).toHex == "04c30101c0"
test "Nodes Response (multiple)":
var p: NodesPacket
p.total = 0x1
var e1, e2: Record
check e1.fromURI("enr:-HW4QBzimRxkmT18hMKaAL3IcZF1UcfTMPyi3Q1pxwZZbcZVRI8DC5infUAB_UauARLOJtYTxaagKoGmIjzQxO2qUygBgmlkgnY0iXNlY3AyNTZrMaEDymNMrg1JrLQB2KTGtv6MVbcNEVv0AHacwUAPMljNMTg")
check e2.fromURI("enr:-HW4QNfxw543Ypf4HXKXdYxkyzfcxcO-6p9X986WldfVpnVTQX1xlTnWrktEWUbeTZnmgOuAY_KUhbVV1Ft98WoYUBMBgmlkgnY0iXNlY3AyNTZrMaEDDiy3QkHAxPyOgWbxp5oF1bDdlYE6dLCUUp8xfVw50jU")
p.enrs = @[e1, e2]
var reqId: RequestId = 1
check encodePacket(p, reqId).toHex == "04f8f20101f8eef875b8401ce2991c64993d7c84c29a00bdc871917551c7d330fca2dd0d69c706596dc655448f030b98a77d4001fd46ae0112ce26d613c5a6a02a81a6223cd0c4edaa53280182696482763489736563703235366b31a103ca634cae0d49acb401d8a4c6b6fe8c55b70d115bf400769cc1400f3258cd3138f875b840d7f1c39e376297f81d7297758c64cb37dcc5c3beea9f57f7ce9695d7d5a67553417d719539d6ae4b445946de4d99e680eb8063f29485b555d45b7df16a1850130182696482763489736563703235366b31a1030e2cb74241c0c4fc8e8166f1a79a05d5b0dd95813a74b094529f317d5c39d235"
suite "Discovery v5 Cryptographic Primitives":
test "ECDH":
const
# input
publicKey = "0x9961e4c2356d61bedb83052c115d311acb3a96f5777296dcf297351130266231503061ac4aaee666073d7e5bc2c80c3f5c5b500c1cb5fd0a76abbb6b675ad157"
secretKey = "0xfb757dc581730490a1d7a00deea65e9b1936924caaea8f44d476014856b68736"
# expected output
sharedSecret = "0x033b11a2a1f214567e1537ce5e509ffd9b21373247f2a3ff6841f4976f53165e7e"
let
pub = PublicKey.fromHex(publicKey)[]
priv = PrivateKey.fromHex(secretKey)[]
let eph = ecdhRawFull(priv, pub)
check:
eph.isOk()
eph[].data == hexToSeqByte(sharedSecret)
test "Key Derivation":
# const
# # input
# secretKey = "0x02a77e3aa0c144ae7c0a3af73692b7d6e5b7a2fdc0eda16e8d5e6cb0d08e88dd04"
# nodeIdA = "0xa448f24c6d18e575453db13171562b71999873db5b286df957af199ec94617f7"
# nodeIdB = "0x885bba8dfeddd49855459df852ad5b63d13a3fae593f3f9fa7e317fd43651409"
# idNonce = "0x0101010101010101010101010101010101010101010101010101010101010101"
# # expected output
# initiatorKey = "0x238d8b50e4363cf603a48c6cc3542967"
# recipientKey = "0xbebc0183484f7e7ca2ac32e3d72c8891"
# authRespKey = "0xe987ad9e414d5b4f9bfe4ff1e52f2fae"
# Code doesn't allow to start from shared `secretKey`, but only from the
# public and private key. Would require pulling `ecdhAgree` out of
# `deriveKeys`
skip()
test "Nonce Signing":
const
# input
idNonce = "0xa77e3aa0c144ae7c0a3af73692b7d6e5b7a2fdc0eda16e8d5e6cb0d08e88dd04"
ephemeralKey = "0x9961e4c2356d61bedb83052c115d311acb3a96f5777296dcf297351130266231503061ac4aaee666073d7e5bc2c80c3f5c5b500c1cb5fd0a76abbb6b675ad157"
localSecretKey = "0xfb757dc581730490a1d7a00deea65e9b1936924caaea8f44d476014856b68736"
# expected output
idNonceSig = "0xc5036e702a79902ad8aa147dabfe3958b523fd6fa36cc78e2889b912d682d8d35fdea142e141f690736d86f50b39746ba2d2fc510b46f82ee08f08fd55d133a4"
let
c = Codec(privKey: PrivateKey.fromHex(localSecretKey)[])
signature = signIDNonce(c, hexToByteArray[idNonceSize](idNonce),
hexToByteArray[64](ephemeralKey))
check signature.toRaw() == hexToByteArray[64](idNonceSig)
test "Encryption/Decryption":
const
# input
encryptionKey = "0x9f2d77db7004bf8a1a85107ac686990b"
nonce = "0x27b5af763c446acd2749fe8e"
pt = "0x01c20101"
ad = "0x93a7400fa0d6a694ebc24d5cf570f65d04215b6ac00757875e3f3a5f42107903"
# expected output
messageCiphertext = "0xa5d12a2d94b8ccb3ba55558229867dc13bfa3648"
let encrypted = encryptGCM(hexToByteArray[aesKeySize](encryptionKey),
hexToByteArray[authTagSize](nonce),
hexToSeqByte(pt),
hexToByteArray[tagSize](ad))
check encrypted == hexToSeqByte(messageCiphertext)
test "Authentication Header and Encrypted Message Generation":
# Can't work directly with the provided shared secret as keys are derived
# inside makeAuthHeader, and passed on one call up.
# The encryption of the auth-resp-pt uses one of these keys, as does the
# encryption of the message itself. So the whole test depends on this.
skip()
suite "Discovery v5 Additional":
test "Encryption/Decryption":
let
encryptionKey = hexToByteArray[aesKeySize]("0x9f2d77db7004bf8a1a85107ac686990b")
nonce = hexToByteArray[authTagSize]("0x27b5af763c446acd2749fe8e")
ad = hexToByteArray[tagSize]("0x93a7400fa0d6a694ebc24d5cf570f65d04215b6ac00757875e3f3a5f42107903")
pt = hexToSeqByte("0xa1")
let ct = encryptGCM(encryptionKey, nonce, pt, ad)
let decrypted = decryptGCM(encryptionKey, nonce, ct, ad)
check decrypted.get() == pt
test "Decryption":
let
encryptionKey = hexToByteArray[aesKeySize]("0x9f2d77db7004bf8a1a85107ac686990b")
nonce = hexToByteArray[authTagSize]("0x27b5af763c446acd2749fe8e")
ad = hexToByteArray[tagSize]("0x93a7400fa0d6a694ebc24d5cf570f65d04215b6ac00757875e3f3a5f42107903")
pt = hexToSeqByte("0x01c20101")
ct = hexToSeqByte("0xa5d12a2d94b8ccb3ba55558229867dc13bfa3648")
# valid case
check decryptGCM(encryptionKey, nonce, ct, ad).get() == pt
# invalid tag/data sizes
var invalidCipher: seq[byte] = @[]
check decryptGCM(encryptionKey, nonce, invalidCipher, ad).isNone()
invalidCipher = repeat(byte(4), gcmTagSize)
check decryptGCM(encryptionKey, nonce, invalidCipher, ad).isNone()
# invalid tag/data itself
invalidCipher = repeat(byte(4), gcmTagSize + 1)
check decryptGCM(encryptionKey, nonce, invalidCipher, ad).isNone()