You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
1.1 KiB
46 lines
1.1 KiB
package secp256k1
|
|
|
|
import (
|
|
"bytes"
|
|
"math/big"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
|
|
underlyingSecp256k1 "github.com/btcsuite/btcd/btcec"
|
|
)
|
|
|
|
func Test_genPrivKey(t *testing.T) {
|
|
|
|
empty := make([]byte, 32)
|
|
oneB := big.NewInt(1).Bytes()
|
|
onePadded := make([]byte, 32)
|
|
copy(onePadded[32-len(oneB):32], oneB)
|
|
t.Logf("one padded: %v, len=%v", onePadded, len(onePadded))
|
|
|
|
validOne := append(empty, onePadded...)
|
|
tests := []struct {
|
|
name string
|
|
notSoRand []byte
|
|
shouldPanic bool
|
|
}{
|
|
{"empty bytes (panics because 1st 32 bytes are zero and 0 is not a valid field element)", empty, true},
|
|
{"curve order: N", underlyingSecp256k1.S256().N.Bytes(), true},
|
|
{"valid because 0 < 1 < N", validOne, false},
|
|
}
|
|
for _, tt := range tests {
|
|
tt := tt
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
if tt.shouldPanic {
|
|
require.Panics(t, func() {
|
|
genPrivKey(bytes.NewReader(tt.notSoRand))
|
|
})
|
|
return
|
|
}
|
|
got := genPrivKey(bytes.NewReader(tt.notSoRand))
|
|
fe := new(big.Int).SetBytes(got[:])
|
|
require.True(t, fe.Cmp(underlyingSecp256k1.S256().N) < 0)
|
|
require.True(t, fe.Sign() > 0)
|
|
})
|
|
}
|
|
}
|