blocks|key|401066|text|密码学是一个广泛的研究领域，它包括加密和安全散列。它还包括各种其他主题，包括秘密共享、公钥系统和随机数生成。人们可以把它概括为与秘密打交道的科学。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|401067|哈希不被认为是一种加密形式。用于哈希和加密的某些算法之间存在一定的关系，但两者是不可互换的。|401068|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Cryptography is broad field of study which covers both encryption and secure hashing. It also encompasses a variety of other topics, including secret sharing, public-key systems, and random number generation. One might summarize it broadly as the science of working with secrets.

Hashing is not considered a form of encryption. There are some relationships between certain algorithms used for hashing and encryption, but the two are not interchangeable.

blocks|key|401051|text|正确，散列是一个单向函数，但哈希不被视为加密。很好地解释了Hashing+vs+Encryption和Fundamental+difference+between+Hashing+and+Encryption+algorithms的区别。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|401052|entityMap|0|LINK|mutability|MUTABLE|url|https://crypto.stackexchange.com/questions/2887/difference-between-encrypting-something-and-hashing-something|1|https://stackoverflow.com/questions/4948322/fundamental-difference-between-hashing-and-encryption-algorithms^0|T|L|0|1F|1S|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

Correct, Hashing is a one way function, but Hashing isn't considered Encryption. A good explanation of the difference <a href="https://crypto.stackexchange.com/questions/2887/difference-between-encrypting-something-and-hashing-something">Hashing vs Encryption</a> and <a href="https://stackoverflow.com/questions/4948322/fundamental-difference-between-hashing-and-encryption-algorithms">Fundamental difference between Hashing and Encryption algorithms</a>.

blocks|key|804579|text|这都是为了达到目的。散列不是关于‘找出原始消息是什么’，而是关于一个唯一的位序列，换句话说，是唯一的id，即标识原始消息的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|804580|即使是源消息中非常小的变化，也会通过所谓的雪崩效应，大幅度地改变输出位序列。|804581|entityMap^0|1I|7|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

It is all about the purpose. Hashing is not about 'find out what the original message is' but about an unique sequence of bits, in other words unique id, that identifies the original message.

Even very small changes in the source message would drastically change the resulting output bit sequence, by the so-called avalanche effect.

blocks|key|804601|text|+en+和+de+前缀很多英语单词对，如en代码和de代码。或者是有能力。En通常表示“put+En”，De一般表示“删除”。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|804602|密码是应用密码学的一种行为。加密是删除密码学的行为。|804603|可以推断出去密码是可能的。|804604|使用散列(“单向加密”)，这是不可能的。所以说你的密码散列是没有意义的，因为它不能被加密。|804605|entityMap^0|0|4|5|4|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|S|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|T|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|U|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|M|$]]

En and De prefix many English word pairs, such as en code and de code. Or en able and dis able. En generally means 'put into', and De generally means 'remove'

en cryption is the act of applying cryptography. de cryption is the act of removing cryptography. 

To en crypt infers that de crypting must be possible. 

With hashes ('one way cryptography') this is not possible. So to say you en crypt a hash makes no sense, as it cannot be de crypted.

blocks|key|771269|text|密码学被称为“秘密写作艺术”，它包括加密和解密，其中加密是将纯文本转换为密码文本，解密是指将密码文本转换为纯文本。这是一个双向的过程，因为加密的消息可以被授权的人或预期的人解密和查看。因此，只有密码技术被用于安全通信。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|771270|但在哈希中，这是一种单向机制。在此，转换值被称为消息摘要(类似密码)，在Cryptography.Hashing机制中，通过使用散列算法SHA(Secure+Hash+Algorithm)、MD5(Message+Digest+v5)等算法将数据转换为哈希值(或)消息摘要，其中转换为Hash值的数据不能被转换回Hash值，因为其主要目的是验证和增强安全性。例如：-你的在线帐户的所有密码都是以哈希的形式存储的，因为即使它被黑了，也不能查看。每次输入密码时，都会将其转换为哈希值，并使用密码的现有哈希值进行检查。|771271|entityMap^0|U|3|10|4|1A|4|1H|3|0|O|4|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|I|$]]

Cryptography is called as "The Art of Secret Writing" includes Encryption and Decryption in which Encryption means conversion for Plain Text into Cipher Text and Decryption means Conversion of Cipher Text to Plain Text. It is a two-way process since the encrypted message can be decrypted and viewed by the authorized person or the intended person. So only Cryptography is used for Secure Communication.

But in Hashing, it is a one-way mechanism. Here the converted value is called as the Message Digest like Cipher in Cryptography.Hashing mechanism converts the data into Hash Value (or) Message Digest by using Hashing Algorithms like SHA(Secure Hash Algorithm), MD5(Message Digest v5) etc.
In this the data converted into Hash Value can't be converted back as it's the main purpose is to Validate and enhance the Security.
For example:-All your passwords for your Online Accounts are stored in the form of Hash since even it is hacked it can't be viewed. Every time when you enter your password it is converted into a hash value and it is checked with the existing hash value of your password.

blocks|key|402441|text|哈希可以被解密足够的时间和计算能力，这就是为什么我们必须改变到更好的标准。这很可能是通过残忍的力量来完成的，这在数学上是不优雅的，但重点仍然是它们可以被解密。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|402442|虽然上面提到的单词在用法上有差异，但我们不应该这么傲慢，以为散列不能被解密(非机密)，它们通常不会被用于这个目的。它们仍然是加密的文本。|402443|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Hashes can be decrypted given enough time and computing power, that's why we have to change to better and better standards. Now this is probably done through brute force which is mathematically inelegant, but the point remains that they can be decrypted. 

While there are differences in the usage of the words as pointed to above, we shouldn't be so arrogant as to think that hashes can't be decrypted (made unsecret), they just usually aren't used for that purpose. They are still encrypted text.

My question is simple: encryption hides information to the point where only the people intended to see the information can actually see it. You can encrypt information and then decrypt it. Why is hashing is considered encryption if it cannot be decrypted? 

I say hashing is considered encryption because you call MD5 a cryptographic hash function.

Cryptography vs Hashing

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我的问题很简单:加密隐藏了信息，以至于只有想要看到信息的人才能真正看到它。您可以加密信息，然后解密它。如果不能解密，为什么哈希被视为加密？我认为哈希被认为是加密，因为您将MD5称为加密散列函数。

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