进一步，没有单向散列应该是一个可逆的功能。
取而代之的是，使用一种单向散列算法来避免密码被提取。
Instead, use a one-way hashing algorithm to prevent password extraction.
PHP的内置crypt功能可实现单向加密或单向散列。
PHP's built-in crypt function implements one-way encryption or one-way hashing.
如果你需要在本地验证用户的密码，用盐使用单向散列函数。
If you need to locally validate a user's password, use a one-way hashing function with salt.
MD 5不是可逆的功能。进一步，没有单向散列应该是一个可逆的功能。
MD5 is not a reversible function. Further, no one-way hash should be a reversible function.
现有的无陷门单向散列函数都是迭代算法，例如SHA和MD系列算法等。
The existing one-way hash functions without trapdoor are all iterative algorithms, for instance, MD and SHA family, etc.
实验表明：该方法简单，具有良好的单向散列性能，并能满足一定的安全性要求。
The experimental result shows that the method is implemented easily and fast. Therefore, the method has a good hash performance and satisfies security requirements.
性能测试的结果表明密码算法和单向散列算法在SDTA结构上获得了较好的性能。
The results show that the implementations of the encryption algorithms and one-way hash algorithms achieved relatively high performance.
结合双混沌系统以及传统散列函数的优点，提出一种新的带密钥单向散列函数的构造方法。
Combining the advantages of chaotic coupled system and conventional one-way hash algorithm, a new keyed one-way hash function was presented.
通过减少毫秒值的精度可以使用单向散列，但这是有风险的，风险的估计就留给感兴趣的读者吧。
One-way hashes could be used by eliminating some of the precision in the microseconds values, but this is best left to the reader with a desire to evaluate the risks on their own.
测试表明，HTBC算法的速度比常用单向散列函数(例如SHA1算法)稍快(5%左右)。
Test results showed that the speed of HTBC algorithm is slightly faster (about 5%) than that of hash functions in common use (for instance, SHA1 algorithm).
该方法称作DigestSearch是因为它使用惟一摘要(单向散列)值来表示一个搜索字。
The method is called DigestSearch because it USES the unique digest (one-way hash) value to represent a search word.
所高速缓存的数据的灵敏度：如果数据是个密码，您可能可以在获得已加速的性能的同时使用单向散列来安全地存储密码。
Sensitivity of data cached: if it is a password, you might be able to use a one-way hash to store the password securely while gaining accelerated performance.
为了更多的利益，利用单向加密算法或散列，像MD 514或Blowfish,15将使密码的解密成为不可能。
For added benefit, using a one-way encryption algorithm or hash, like MD5 14 or Blowfish, 15 will make decrypting the password impossible.
鉴于散列函数的单向不可逆性，介绍了一种利用散列函数实现网络远程身份鉴别的方法。
This paper introduces a method of authentication based on hash function to realize remote authentication on network, which makes use of the one-way characteristic of hash function.
鉴于散列函数的单向不可逆性，介绍了一种利用散列函数实现网络远程身份鉴别的方法。
This paper introduces a method of authentication based on hash function to realize remote authentication on network, which makes use of the one-way characteristic of hash function.
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