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simplify EntranceServer crypto

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This commit is contained in:
wish
2023-12-31 19:56:20 +11:00
parent 57bf1ca6e4
commit 3db6ee7b25
1 changed files with 2 additions and 2 deletions
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4
server/entranceserver/crypto.go
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@@ -16,8 +16,8 @@ func CalcSum32(data []byte) uint32 {
tableIdx1 := int((data[len(data)>>1] + 1) & 0xFF) tableIdx1 := int((data[len(data)>>1] + 1) & 0xFF)
out := make([]byte, 4) out := make([]byte, 4)
for i := 0; i < len(data); i++ { for i := 0; i < len(data); i++ {
key := _sum32Table0[(tableIdx0+i)%7] ^ _sum32Table1[(tableIdx1+i)%9] key := data[i] ^ _sum32Table0[(tableIdx0+i)%7] ^ _sum32Table1[(tableIdx1+i)%9]
out[i&3] = (out[i&3] + (data[i] ^ key)) & 0xFF out[i&3] = (out[i&3] + key) & 0xFF
} }
return binary.BigEndian.Uint32(out) return binary.BigEndian.Uint32(out)
} }