ayo/gocommon
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mountain
2024-01-22 16:51:10 +09:00
parent 9ebfdfd049
commit 7e8afcd2a9
1 changed files with 6 additions and 1 deletions
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7
coupon/helper.go
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@ -1,6 +1,7 @@
package coupon package coupon
import ( import (
"crypto/md5"
"encoding/binary" "encoding/binary"
"encoding/hex" "encoding/hex"
"math/rand" "math/rand"
@ -41,8 +42,12 @@ func DisolveCouponCode(code string) (round string, key string) {
} }
func MakeCouponRoundHash(name string) (hash string, roundNumber uint32) { func MakeCouponRoundHash(name string) (hash string, roundNumber uint32) {
m5 := md5.New()
m5.Write([]byte(name))
hashbt := m5.Sum(nil)
roundbt := make([]byte, 8) roundbt := make([]byte, 8)
copy(roundbt, []byte(strings.ToLower(name))) copy(roundbt, hashbt[:8])
roundseed := int64(binary.BigEndian.Uint64(roundbt)) roundseed := int64(binary.BigEndian.Uint64(roundbt))
roundhash := make([]byte, 4) roundhash := make([]byte, 4)