yaole
45 lines
990 B
Go
45 lines
990 B
Go
// +build generic32
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package ec256
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import (
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"fmt"
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"math/big"
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"testing"
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"xdx.jelly/xgcl/gmath"
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)
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// 窗口为8的预计算点
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func TestGenCurvePrecompute8(t *testing.T) {
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table := make([]*big.Int, 0, 2*256)
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// for i = i[k], i[i] = 0 or 1
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// table[i] is i[0] + i[1]*2^32 + i[2]*2^64 + ... + i[7]*2^{224}
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for i := 0; i < 256; i++ {
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k := new(big.Int)
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for j := 7; j >= 0; j-- {
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if (i>>j)&1 != 0 {
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k.Add(k, gmath.BigInt1)
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}
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k.Lsh(k, 32)
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}
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x, y := c256.ScalarBaseMult(k.Bytes())
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table = append(table, x)
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table = append(table, y)
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}
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for _, x := range table {
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var out [c256Limbs]uint32
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c256FromBig(&out, x)
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fmt.Printf("0x%08x,0x%08x,0x%08x,0x%08x,0x%08x,0x%08x,0x%08x,0x%08x,0x%08x\n",
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out[0], out[1], out[2], out[3], out[4], out[5], out[6], out[7], out[8],
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)
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// fmt.Printf("&curvePoint{gfP{0x%x,0x%x,0x%x,0x%x},gfP{0x%x,0x%x,0x%x,0x%x},*newGFp(1),*newGFp(1)},\n",
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// x.x[0], x.x[1], x.x[2], x.x[3],
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// x.y[0], x.y[1], x.y[2], x.y[3])
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}
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}
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