使用Mimekit签名时，DKIM签名存在次要问题
[英]Minor Issues with DKIM signature while signing with Mimekit
问题描述
While DKIM signing with Mimekit works perfectly, I have two small issues with the actual signature. 
使用Mimekit进行DKIM签名可以完美地工作时，实际签名有两个小问题。
DKIM-Signature: v=1; a=rsa-sha256; d=xxxxx.xx.xxx.xx; s=xxxxxx; c=relaxed/relaxed; i=kxxxx@xxxxx.xx.xxx.xx; t=1505903265; h=subject:from:reply-to:to:date:message-id:list-unsubscribe:sender: content-type:mime-version; bh=+YJ8JIQ4EA+AyTfpYN8VFp1ZiNU7BC/a3XtvhaR/VZE=; b=NLPjxuR58K9Rixf6eLtWESFphai0PoATGpC0UaEz1lqTHRCFeECbDC8HbcVBEQQfO8gyKi8pOub f4e92zbgttUIgpVZfi5xu7OMSPm5t/seycBdGfNto9bhWRoW21avcan1LPtEERthtYV0Eb6kwlEFX UFH3AhZKsvzD2YFTVyU=
DKIM-Signature: v=1; a=rsa-sha256; d=xxxx.xxx; s=xxxxx; c=relaxed/relaxed; t=1505903265; h=subject:from:reply-to:to:date:message-id:x-feedback-id:list-unsubscribe: content-type:mime-version; bh=+YJ8JIQ4EA+AyTfpYN8VFp1ZiNU7BC/a3XtvhaR/VZE=; b=kVrvAHo7Kek5jx/YEzd9WWi42wpn65r+0FOTwQ9H0fHDB738WY93Cro2p6Hq4qUBu3q6Eztc54N aXOo95mr0Mu0qFvlYM0hLWWjA9Je+fBjvoJPwuFLZVEfd8taZWFYOdYlEvsgyrPz3JMDYYio26wXy zyR+4R2Yc4SBfFP4/vs=
1) For some reason the header substring staring from "h=" and ending in ";" 1）出于某种原因，标题子字符串从“ h =“开始，以“;”结尾 doesn't preserve case, so "content-type:" should be "Content-Type:" 不保留大小写，因此“ content-type：”应为“ Content-Type：”
2) There seems to be an extra space that appears before "content-type:", how can this be removed?. 2）在“ content-type：”之前似乎有一个多余的空格，该如何删除？
1 个解决方案
解决方案1
0 已采纳 2017-09-22 06:43:30
@jstedfast's answer below @jstedfast的答案如下
The space before the content-type is probably because the header was folded there in the raw output. content-type之前的空格可能是因为标头在原始输出中折叠在那里。 The header names are lowercased for canonicalization purposes. 标头名称被小写以用于规范化目的。 I suppose I could leave them whatever case the user feeds them in as, but I went with lowercasing because that's what gmail does. 我想无论用户使用哪种情况我都可以保留它们，但是我使用了小写字母，因为gmail就是这样做的。 – jstedfast – jstedfast
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