英文:
Why do these base64 encoding outputs differ, given the same input string?
问题
当从相同的输入字符串获取Base64编码的字符串时，我发现JavaScript、Groovy和Go得到的结果是相同的，但GNU base64稍有不同。为什么会这样呢？
JavaScript (nodejs v0.10.33):
new Buffer('Laurence Tureaud is Mr. T').toString('base64');
TGF1cmVuY2UgVHVyZWF1ZCBpcyBNci4gVA==
Groovy (2.3.7 on Java 8):
'Laurence Tureaud is Mr. T'.bytes.encodeBase64().toString()
TGF1cmVuY2UgVHVyZWF1ZCBpcyBNci4gVA==
Go (1.4):
b64.StdEncoding.EncodeToString([]byte("Laurence Tureaud is Mr. T"))
TGF1cmVuY2UgVHVyZWF1ZCBpcyBNci4gVA==
GNU base64 (GNU coreutils 8.12.197-032bb with UTF-8 term charset):
echo 'Laurence Tureaud is Mr. T' | base64
TGF1cmVuY2UgVHVyZWF1ZCBpcyBNci4gVAo=
英文:
When getting a bas64 encoded string from the same input string I find that JavaScript, Groovy, and Go have the same result, but GNU base64 is slightly different. Why is that?
JavaScript (nodejs v0.10.33):
new Buffer('Laurence Tureaud is Mr. T').toString('base64');
TGF1cmVuY2UgVHVyZWF1ZCBpcyBNci4gVA==
Groovy (2.3.7 on Java 8):
'Laurence Tureaud is Mr. T'.bytes.encodeBase64().toString()
TGF1cmVuY2UgVHVyZWF1ZCBpcyBNci4gVA==
Go (1.4):
b64.StdEncoding.EncodeToString([]byte("Laurence Tureaud is Mr. T"))
TGF1cmVuY2UgVHVyZWF1ZCBpcyBNci4gVA==
GNU base64 (GNU coreutils 8.12.197-032bb with UTF-8 term charset):
echo 'Laurence Tureaud is Mr. T' | base64
TGF1cmVuY2UgVHVyZWF1ZCBpcyBNci4gVAo=
答案1
得分: 7
echo 'Laurence Tureaud is Mr. T'的翻译结果如下：
回声在字符串后添加一个换行符。
尝试以下命令以删除换行符：
echo -n 'Laurence Tureaud is Mr. T' | base64
你将得到 TGF1cmVuY2UgVHVyZWF1ZCBpcyBNci4gVA==。
英文:
> echo 'Laurence Tureaud is Mr. T'
Echo adds a newline after the string.
Try the following to remove the newline:
echo -n 'Laurence Tureaud is Mr. T' | base64
And you get TGF1cmVuY2UgVHVyZWF1ZCBpcyBNci4gVA==
答案2
得分: 4
所有的输出都是相同的。
唯一的区别是，当使用 echo 命令时，Bash 会在末尾添加一个换行符 (\n)。因此，输出中会多出一个附加字符（= 字符只是 base64 编码中的填充字符）。
英文:
All output is the same.
The only difference is that bash appends a newline (\n) to the end when using echo. Therefore the is an additional character appended to the output (the character = is only a padding in base64).
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论