base64编码的字符串是否包含空格? [英] Can a base64 encoded string contain whitespace?
问题描述
是否含有base64编码的字符串包含空格?具体来说,它可以在字符串的端中包含空格吗?
Might a base64 encoded string contain whitespace? Specifically, could it contain whitespace at the end of the string?
PS。在这里,我正在考虑整个MySQL将在VARCHAR字段中存储字符串时修剪尾随空格; - )
PS. I'm thinking about the whole "MySQL will trim trailing whitespace when storing strings in VARCHAR fields" here ;-)
推荐答案
否它不能。请参阅 Base64 ,使用 base64
,它们是字符 AZ
, az
, 0-9
, +
和 /
(最后两个可能因实现而异)以及填充字符 =
(但这也取决于实现,因为一些实现根本不使用填充)。
No it can't. See Base64 for the allowed character repository used by base64
, which are the characters A-Z
, a-z
, 0-9
, +
and /
(the last two may differ depending on the implementation) as well as the padding character =
(but that's also implementation dependent as some implementations don't use padding at all).
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