M1卡密钥批量更改工具。目前M1卡已经出现了漏洞，变得不是那么安全，特别是在部分扇区存在不加密的情况下，安全性大打折扣，使破解变得更为容易，破解成本更为低廉。那么使用本工具对所有扇区进行批量加密，可以相对的提高IC卡的安全性。-Currently there have been loopholes M1 card, become less secure, especially in the presence of non-encrypted, security compromised in some sectors, make it easier to crack, crack a cheaper. Then use this tool to all sectors for bulk encryption, it can increase the relative safety of the IC card.