01Hash-locking（哈希锁定）的原理 哈希锁定技术的核心原理是使用带有哈希锁定机制的合约进行资产锁定实现质押效果，为不同资产之间的交易提供了信任基础。使用哈希锁定机制的合约称为哈希时间锁合约（Hash Time Locked Contract，简称 HTLC）。02HTLC 的核心是时间锁和哈希锁 时间锁是指，交易双方约定在某个时间内提交才...
This combination of hash-locking and notary scheme allows our scheme to overcome the original shortcomings of them both, while maintaining high efficiency and security. In addition to designing the transaction method, we also constructed a transaction model, conducted experiments on transaction gas ...
a cross-chain protocol is needed. The main contribution of this paper is to propose a cross-chain solution based on sidechain and hash-locking, thus constructing a value network highway.
This is not really a bug but a feature request to improve security of the app. Request 1: Verifying APK Certificate requires complex steps for a users who does not know about all this. But verifying hash of APK itself is really easy. Thi...
Hashcon 新加坡国立大学 系统设计与管理硕士 Java24进一步解决虚拟线程Pin方式 | 问的比较多的问题,虚拟线程 synchronized 不 pin 的变化: 主要是锁模式实现发生变化:-XX:LockingMode 1. 传统轻量锁(-XX:LockingMode=1),对象头 MarkWord CAS 线程ID指针这种锁定方式未来会被废弃。所以虚拟线程没有兼容...
Which should be used - ConcurrentHashMap putIfAbsent or locking the map, Should you check if the map containsKey before using ConcurrentMap's putIfAbsent, Difference between stream.max(Comparator) and stream.collect(Collectors.maxBy(Comparator) in Java
Yes, you could build the whole thing up dynamically, calculate the hash then return that in the CSP and render the script block to the page but not only is that getting super messy, it doesn't help with the maintainability problem. All of this brings us to the next feature mentioned i...
比较靠经验,测得面面俱到比较难。一是一些并发pattern是固定的比如double checking,crab locking这些模式写多了,就不会怀疑一段代码,也不用测。二是并发代码和周边组件分离测试并发相关代码或者任何复杂逻辑尽量收敛到一个小类里,用虚类依赖反转,这样就能单独测试核心代码。三代码内部留下校验函数,从内部确定哪些状态...
在配置文件中,您可以设置密码策略,确定在锁定用户帐户之前允许的连续失败登录尝试次数。该锁定机制有助于阻止通过字典式强力攻击尝试来猜测用户密码的行为。设置帐户锁定使用FAILED_LOGIN_ATTEMPTS 参数(CREATE PROFILE 或ALTER PROFILE 语句)设置该值。如果用户帐户登录尝试连续失败次数超过 FAILED_LOGIN_ATTEMPTS 设置的值,...
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