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common/math, tests/fuzzers: use big.Int clone (#26006)
* common/math, tests/fuzzers: use big.Int clone * common/math: license
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| // Copyright 2022 The go-ethereum Authors | ||
| // This file is part of the go-ethereum library. | ||
| // | ||
| // The go-ethereum library is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // The go-ethereum library 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 Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| package math | ||
|
|
||
| import ( | ||
| "math/big" | ||
| "testing" | ||
|
|
||
| big2 "github.com/holiman/big" | ||
| ) | ||
|
|
||
| // TestFastModexp tests some cases found during fuzzing. | ||
| func TestFastModexp(t *testing.T) { | ||
| for i, tc := range []struct { | ||
| base string | ||
| exp string | ||
| mod string | ||
| }{ | ||
| {"0xeffffff900002f00", "0x40000000000000", "0x200"}, | ||
| {"0xf000", "0x4f900b400080000", "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"}, | ||
| {"5", "1435700818", "72"}, | ||
| {"0xffff", "0x300030003000300030003000300030003000302a3000300030003000300030003000300030003000300030003000300030003030623066307f3030783062303430383064303630343036", "0x300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"}, | ||
| {"0x3133", "0x667f00000000000000000000000000ff002a000000000000000000000000000000000000000000000000000000000000667fff30783362773057ee756a6c266134643831646230313630", "0x3030000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"}, | ||
| } { | ||
| var ( | ||
| base, _ = new(big.Int).SetString(tc.base, 0) | ||
| exp, _ = new(big.Int).SetString(tc.exp, 0) | ||
| mod, _ = new(big.Int).SetString(tc.mod, 0) | ||
| base2, _ = new(big2.Int).SetString(tc.base, 0) | ||
| exp2, _ = new(big2.Int).SetString(tc.exp, 0) | ||
| mod2, _ = new(big2.Int).SetString(tc.mod, 0) | ||
| ) | ||
| var a = new(big2.Int).Exp(base2, exp2, mod2).String() | ||
| var b = new(big.Int).Exp(base, exp, mod).String() | ||
| if a != b { | ||
| t.Errorf("test %d: %#x ^ %#x mod %#x \n have %x\n want %x", i, base, exp, mod, a, b) | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| // Copyright 2020 The go-ethereum Authors | ||
| // This file is part of the go-ethereum library. | ||
| // | ||
| // The go-ethereum library is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // The go-ethereum library 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 Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
|
|
||
| "github.com/ethereum/go-ethereum/tests/fuzzers/modexp" | ||
| ) | ||
|
|
||
| func main() { | ||
| if len(os.Args) != 2 { | ||
| fmt.Fprintf(os.Stderr, "Usage: debug <file>\n") | ||
| fmt.Fprintf(os.Stderr, "Example\n") | ||
| fmt.Fprintf(os.Stderr, " $ debug ../crashers/4bbef6857c733a87ecf6fd8b9e7238f65eb9862a\n") | ||
| os.Exit(1) | ||
| } | ||
| crasher := os.Args[1] | ||
| data, err := os.ReadFile(crasher) | ||
| if err != nil { | ||
| fmt.Fprintf(os.Stderr, "error loading crasher %v: %v", crasher, err) | ||
| os.Exit(1) | ||
| } | ||
| modexp.Fuzz(data) | ||
| } |
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