258 lines
9.7 KiB
Nim
258 lines
9.7 KiB
Nim
# Stint
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# Copyright 2018 Status Research & Development GmbH
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# Licensed under either of
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#
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
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#
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import ../stint, unittest, strutils, math
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suite "Testing input and output procedures":
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test "Creation from decimal strings":
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block:
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let a = "123456789".parse(Stint[64])
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let b = 123456789.stint(64)
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check: a == b
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check: 123456789'i64 == cast[int64](a)
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block:
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let a = "123456789".parse(Stuint[64])
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let b = 123456789.stuint(64)
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check: a == b
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check: 123456789'u64 == cast[uint64](a)
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block:
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let a = "-123456789".parse(Stint[64])
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let b = (-123456789).stint(64)
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check: a == b
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check: -123456789'i64 == cast[int64](a)
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test "Creation from hex strings":
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block:
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let a = "0xFF".parse(Stint[64], radix = 16)
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let b = 255.stint(64)
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check: a == b
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check: 255'i64 == cast[int64](a)
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block:
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let a = "0xFF".parse(Stuint[64], radix = 16)
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let b = 255.stuint(64)
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check: a == b
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check: 255'u64 == cast[uint64](a)
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let a2 = hexToUint[64]("0xFF")
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check: a == a2
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block:
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let a = "0xFFFF".parse(Stint[16], 16)
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let b = (-1'i16).stint(16)
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check: a == b
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check: -1'i16 == cast[int16](a)
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test "Conversion to decimal strings":
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block:
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let a = 1234567891234567890.stint(128)
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check: a.toString == "1234567891234567890"
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check: $a == "1234567891234567890"
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block:
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let a = 1234567891234567890.stuint(128)
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check: a.toString == "1234567891234567890"
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check: $a == "1234567891234567890"
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block:
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let a = (-1234567891234567890).stint(128)
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check: a.toString == "-1234567891234567890"
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check: $a == "-1234567891234567890"
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test "Conversion to hex strings":
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block:
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let a = 0x1234567890ABCDEF.stint(128)
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check: a.toHex.toUpperAscii == "1234567890ABCDEF"
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block:
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let a = 0x1234567890ABCDEF.stuint(128)
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check: a.toHex.toUpperAscii == "1234567890ABCDEF"
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# TODO: negative hex
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test "Hex dump":
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block:
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let a = 0x1234'i32.stint(32)
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check: a.dumpHex(bigEndian).toUpperAscii == "00001234"
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block:
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let a = 0x1234'i32.stint(32)
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check: a.dumpHex(littleEndian).toUpperAscii == "34120000"
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test "Back and forth bigint conversion consistency":
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block:
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let s = "1234567890123456789012345678901234567890123456789"
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let a = parse(s, StInt[512])
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check: a.toString == s
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check: $a == s
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block:
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let s = "1234567890123456789012345678901234567890123456789"
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let a = parse(s, StUInt[512])
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check: a.toString == s
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check: $a == s
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test "Truncate: int, int64, uint, uint64":
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block:
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let x = 100.stuint(128)
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check:
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x.truncate(int) == 100
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x.truncate(int64) == 100'i64
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x.truncate(uint64) == 100'u64
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x.truncate(uint) == 100'u
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block:
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let x = pow(2.stuint(128), 64) + 1
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check:
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# x.truncate(int) == 1 # This is undefined
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# x.truncate(int64) == 1'i64 # This is undefined
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x.truncate(uint64) == 1'u64
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x.truncate(uint) == 1'u
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test "toInt, toInt64, toUint, toUint64 - word size (32/64-it) specific":
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when not defined(stint_test):
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# stint_test forces word size of 32-bit
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# while stint uses uint64 by default.
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block:
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let x = pow(2.stuint(128), 32) + 1
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when sizeof(int) == 4: # 32-bit machines
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check:
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x.truncate(uint) == 1'u
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x.truncate(uint64) == 2'u64^32 + 1
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else:
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check:
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x.truncate(uint) == 2'u^32 + 1
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x.truncate(uint64) == 2'u64^32 + 1
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else:
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echo "Next test skipped when Stint forces uint32 backend in test mode"
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suite "Testing conversion functions: Hex, Bytes, Endianness using secp256k1 curve":
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let
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SECPK1_N_HEX = "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141".toLowerAscii
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SECPK1_N = "115792089237316195423570985008687907852837564279074904382605163141518161494337".u256
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SECPK1_N_BYTES = [byte(255), 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 254, 186, 174, 220, 230, 175, 72, 160, 59, 191, 210, 94, 140, 208, 54, 65, 65]
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test "explicit conversions from basic types":
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type
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UInt256 = Stuint[256]
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Int128 = Stint[128]
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let x = 10.uint16
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check:
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x.to(UInt256).bits == 256
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x.to(Int128).bits == 128
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test "hex -> uint256":
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check: SECPK1_N_HEX.parse(Stuint[256], radix = 16) == SECPK1_N
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test "uint256 -> hex":
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check: SECPK1_N.dumpHex == SECPK1_N_HEX
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test "hex -> big-endian array -> uint256":
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check: readUintBE[256](SECPK1_N_BYTES) == SECPK1_N
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test "uint256 -> minimal big-endian array -> uint256":
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# test drive the conversion logic by testing the first 25 factorials:
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var f = 1.stuint(256)
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for i in 2 .. 25:
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f = f * i.stuint(256)
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let
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bytes = f.toByteArrayBE
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nonZeroBytes = significantBytesBE(bytes)
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fRestored = Uint256.fromBytesBE(bytes.toOpenArray(bytes.len - nonZeroBytes,
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bytes.len - 1))
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check f == fRestored
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test "uint256 -> big-endian array -> hex":
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check: SECPK1_N.toByteArrayBE == SECPK1_N_BYTES
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# This is a sample of signatures generated with a known-good implementation of the ECDSA
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# algorithm, which we use to test our ECC backends. If necessary, it can be generated from scratch
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# with the following code:
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#
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# """python
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# from devp2p import crypto
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# from eth_utils import encode_hex
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# msg = b'message'
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# msghash = crypto.sha3(b'message')
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# for secret in ['alice', 'bob', 'eve']:
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# print("'{}': dict(".format(secret))
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# privkey = crypto.mk_privkey(secret)
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# pubkey = crypto.privtopub(privkey)
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# print(" privkey='{}',".format(encode_hex(privkey)))
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# print(" pubkey='{}',".format(encode_hex(crypto.privtopub(privkey))))
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# ecc = crypto.ECCx(raw_privkey=privkey)
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# sig = ecc.sign(msghash)
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# print(" sig='{}',".format(encode_hex(sig)))
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# print(" raw_sig='{}')".format(crypto._decode_sig(sig)))
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# doAssert crypto.ecdsa_recover(msghash, sig) == pubkey
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# """
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type
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testKeySig = object
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privkey*: string
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pubkey*: string
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raw_sig*: tuple[v: int, r, s: string]
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serialized_sig*: string
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let
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alice = testKeySig(
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privkey: "9c0257114eb9399a2985f8e75dad7600c5d89fe3824ffa99ec1c3eb8bf3b0501",
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pubkey: "5eed5fa3a67696c334762bb4823e585e2ee579aba3558d9955296d6c04541b426078dbd48d74af1fd0c72aa1a05147cf17be6b60bdbed6ba19b08ec28445b0ca",
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raw_sig: (
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v: 1,
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r: "B20E2EA5D3CBAA83C1E0372F110CF12535648613B479B64C1A8C1A20C5021F38", # Decimal "80536744857756143861726945576089915884233437828013729338039544043241440681784",
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s: "0434D07EC5795E3F789794351658E80B7FAF47A46328F41E019D7B853745CDFD" # Decimal "1902566422691403459035240420865094128779958320521066670269403689808757640701"
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),
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serialized_sig: "b20e2ea5d3cbaa83c1e0372f110cf12535648613b479b64c1a8c1a20c5021f380434d07ec5795e3f789794351658e80b7faf47a46328f41e019d7b853745cdfd01"
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)
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bob = testKeySig(
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privkey: "38e47a7b719dce63662aeaf43440326f551b8a7ee198cee35cb5d517f2d296a2",
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pubkey: "347746ccb908e583927285fa4bd202f08e2f82f09c920233d89c47c79e48f937d049130e3d1c14cf7b21afefc057f71da73dec8e8ff74ff47dc6a574ccd5d570",
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raw_sig: (
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v: 1,
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r: "5C48EA4F0F2257FA23BD25E6FCB0B75BBE2FF9BBDA0167118DAB2BB6E31BA76E", # Decimal "41741612198399299636429810387160790514780876799439767175315078161978521003886",
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s: "691DBDAF2A231FC9958CD8EDD99507121F8184042E075CF10F98BA88ABFF1F36" # Decimal "47545396818609319588074484786899049290652725314938191835667190243225814114102"
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),
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serialized_sig: "5c48ea4f0f2257fa23bd25e6fcb0b75bbe2ff9bbda0167118dab2bb6e31ba76e691dbdaf2a231fc9958cd8edd99507121f8184042e075cf10f98ba88abff1f3601"
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)
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eve = testKeySig(
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privkey: "876be0999ed9b7fc26f1b270903ef7b0c35291f89407903270fea611c85f515c",
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pubkey: "c06641f0d04f64dba13eac9e52999f2d10a1ff0ca68975716b6583dee0318d91e7c2aed363ed22edeba2215b03f6237184833fd7d4ad65f75c2c1d5ea0abecc0",
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raw_sig: (
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v: 0,
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r: "BABEEFC5082D3CA2E0BC80532AB38F9CFB196FB9977401B2F6A98061F15ED603", # Decimal "84467545608142925331782333363288012579669270632210954476013542647119929595395",
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s: "603D0AF084BF906B2CDF6CDDE8B2E1C3E51A41AF5E9ADEC7F3643B3F1AA2AADF" # Decimal "43529886636775750164425297556346136250671451061152161143648812009114516499167"
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),
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serialized_sig: "babeefc5082d3ca2e0bc80532ab38f9cfb196fb9977401b2f6a98061f15ed603603d0af084bf906b2cdf6cdde8b2e1c3e51a41af5e9adec7f3643b3f1aa2aadf00"
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)
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test "Alice signature":
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check: alice.raw_sig.r.parse(Stuint[256], 16) == "80536744857756143861726945576089915884233437828013729338039544043241440681784".u256
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check: alice.raw_sig.s.parse(Stuint[256], 16) == "1902566422691403459035240420865094128779958320521066670269403689808757640701".u256
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test "Bob signature":
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check: bob.raw_sig.r.parse(Stuint[256], 16) == "41741612198399299636429810387160790514780876799439767175315078161978521003886".u256
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check: bob.raw_sig.s.parse(Stuint[256], 16) == "47545396818609319588074484786899049290652725314938191835667190243225814114102".u256
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test "Eve signature":
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check: eve.raw_sig.r.parse(Stuint[256], 16) == "84467545608142925331782333363288012579669270632210954476013542647119929595395".u256
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check: eve.raw_sig.s.parse(Stuint[256], 16) == "43529886636775750164425297556346136250671451061152161143648812009114516499167".u256
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