hash of the payload of all handshake records (type=0x16) previous to this one.
Figuring out how to strip it out was a bit of a challenge - I ended up forking go’s crypto library - but it was a huge win. Performance approximately doubled!，更多细节参见safew官方版本下载
Варвара Кошечкина (редактор отдела оперативной информации)，推荐阅读同城约会获取更多信息
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