77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
package main
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import (
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"crypto/hmac"
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"crypto/sha256"
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"encoding/binary"
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"encoding/hex"
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"fmt"
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"sort"
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)
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func main() {
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// 数据库查到的正确seed (活动76)
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seedHex := "162B08DAC70849C68FDBF499583199B9500EE96CCCFC64511719B54FC7D9AFC9"
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seed, _ := hex.DecodeString(seedHex)
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issueID := int64(83)
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userID := int64(9054)
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saltHex := "c4e144b991600f5a5a316d55b6929d19"
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// payload格式
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payload := fmt.Sprintf("draw:issue:%d|user:%d|salt:%s", issueID, userID, saltHex)
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fmt.Printf("Seed: %s\n", seedHex)
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fmt.Printf("Payload: %s\n", payload)
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mac := hmac.New(sha256.New, seed)
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mac.Write([]byte(payload))
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sum := mac.Sum(nil)
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totalWeight := int64(100000)
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rnd := int64(binary.BigEndian.Uint64(sum[:8]) % uint64(totalWeight))
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fmt.Printf("HMAC: %x\n", sum)
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fmt.Printf("计算随机数: %d\n", rnd)
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fmt.Printf("数据库记录: 90555\n")
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if rnd == 90555 {
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fmt.Println("\n✅ 随机数匹配！")
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} else {
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fmt.Println("\n❌ 随机数不匹配")
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}
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// 用计算的随机数选择奖品
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// 用计算的随机数选择奖品
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weights := []struct {
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ID int64
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Weight int64
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Name string
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}{
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{280, 88200, "捏捏"},
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{281, 100, "魔灵高达"},
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{282, 6500, "高达徽章"},
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{283, 3200, "打磨工具五件套"},
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{284, 800, "SD随机款"},
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{285, 800, "EG创制强袭高达"},
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{286, 100, "V2高达AB型"},
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{429, 100, "EG创制强袭超银河"},
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{430, 100, "战国异端顽驮无"},
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{431, 100, "牛高达"},
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}
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// 按ID排序（模拟后端逻辑）
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sort.Slice(weights, func(i, j int) bool {
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return weights[i].ID < weights[j].ID
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})
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var acc int64
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for _, w := range weights {
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acc += w.Weight
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if rnd < acc {
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fmt.Printf("\n计算中奖: ID %d (%s)\n", w.ID, w.Name)
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break
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}
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}
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fmt.Println("数据库实际: ID 282 (高达徽章)")
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}
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