文件名称:sha1
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SHA (Secure Hash Algorithm，译作安全散列算法) 是美国国家安全局 (NSA) 设计，美国国家标准与技术研究院 (NIST) 发布的一系列密码散列函数。正式名称为 SHA 的家族第一个成员发布于 1993年。然而现在的人们给它取了一个非正式的名称 SHA-0 以避免与它的后继者混淆。两年之后， SHA-1，第一个 SHA 的后继者发布了。 另外还有四种变体，曾经发布以提升输出的范围和变更一些细微设计: SHA-224, SHA-256, SHA-384 和 SHA-512 (这些有时候也被称做 SHA-2)。
-SHA (Secure Hash Algorithm, Secure Hash Algorithm translated) is a U.S. National Security Agency (NSA) design, the U.S. National Institute of Standards and Technology (NIST) released a series of password hash function. Formally known as the SHA family members of the first release in 1993. But now people take it the informal name of a SHA-0 in order to avoid confusion of its successor. Two years later, SHA-1, the first successor to SHA issued. There are four variants have been released to enhance the output of some minor changes to the scope and design: SHA-224, SHA-256, SHA-384 and SHA-512 (these are sometimes also known as SHA-2).
-SHA (Secure Hash Algorithm, Secure Hash Algorithm translated) is a U.S. National Security Agency (NSA) design, the U.S. National Institute of Standards and Technology (NIST) released a series of password hash function. Formally known as the SHA family members of the first release in 1993. But now people take it the informal name of a SHA-0 in order to avoid confusion of its successor. Two years later, SHA-1, the first successor to SHA issued. There are four variants have been released to enhance the output of some minor changes to the scope and design: SHA-224, SHA-256, SHA-384 and SHA-512 (these are sometimes also known as SHA-2).
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