从 Linux 命令行生成 sha256
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Generating a sha256 from the Linux command line
提问by hendry
I know the string "foobar" generates the SHA 256 hash c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2using
http://hash.online-convert.com/sha256-generator
我知道字符串“foobar”c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2使用
http://hash.online-convert.com/sha256-generator生成 SHA 256 哈希
However the command line shell:
但是命令行外壳:
hendry@x201 ~$ echo foobar | sha256sum
aec070645fe53ee3b3763059376134f058cc337247c978add178b6ccdfb0019f -
Generates a different hash. What am I missing?
生成不同的哈希。我错过了什么?
采纳答案by mvds
echowill normally output a newline, which is suppressed with -n. Try this:
echo通常会输出一个换行符,用-n. 尝试这个:
echo -n foobar | sha256sum
回答by Thomas Owens
I believe that echooutputs a trailing newline. Try using -nas a parameter to echo to skip the newline.
我相信echo输出尾随换行符。尝试使用-n作为参数来回显以跳过换行符。
回答by Nordic Mainframe
echo produces a trailing newline character which is hashed too. try:
echo 生成一个尾随换行符,该字符也经过哈希处理。尝试:
/bin/echo -n foobar | sha256sum
回答by Nicholas Knight
echo -nworks and is unlikely to ever disappear due to massive historical usage, however per recent versions of the POSIX standard, new conforming applications are "encouraged to use printf".
echo -n由于大量的历史使用,工作并且不太可能消失,但是根据POSIX 标准的最新版本,“鼓励使用printf”新的符合标准的应用程序。
回答by Sucrentheitroad
If the command sha256sum is not available (on mavericks for example), you can use :
如果命令 sha256sum 不可用(例如在小牛上),您可以使用:
echo -n "foobar" | shasum -a 256
echo -n "foobar" | shasum -a 256
回答by Farahmand
If you have installed openssl, you can use:
如果已安装openssl,则可以使用:
echo -n "foobar" | openssl dgst -sha256
For other algorithms you can replace -sha256with -md4, -md5, -ripemd160, -sha, -sha1, -sha224, -sha384, -sha512or -whirlpool.
对于其他算法,您可以替换-sha256为-md4、-md5、-ripemd160、-sha、-sha1、-sha224、-sha384、-sha512或-whirlpool。

