需求: 微信7.0之后朋友圈图片使用cdn上传，想研究下。tcp抓包后发现tcp头部由一些字段，有人知道rsavalue是如何生成的吗？
日志:
ver:1
weixinnum:430020974
province:24
city:1
isp:1
seq:5
clientversion:402653751
clientostype:iOS12.1
authkey:3043020101043C303A020101020101020419A1996E020320141D0204102659650204AFA8973D02032016D90204BDAF120E02047BD06071020460A74AE5020400F76D680400
nettype:1
acceptdupack:1
rsaver:1
rsavalue:8FF4D6FC0B89AB63DFD1B6CBFE98E6417C3FA9C7C367DEC63B3EDED67ACDCAD51098FFDF336D6F59C0673AA9CAF151E311D56D19E0F74A3C2D5936F5F46CC0C2CCD78F89018B564E567AEA4F6882A87C4ECFC23149E487A2E80F4253C194C6DE3D5F2D6B5A0C302944D9138111B13F0526876E1BB26CE181F723EC1E4347D6CC
filetype:20202
wxchattype:0
taskid:0
lastretcode:0
cli-quic-flag:0
isstorevideo:0
nocheckaeskey:1
enablehit:1
existancecheck:0
apptype:102
filekey:[TEMP]43552802_638085518923_638085518945
totalsize:610182
rawtotalsize:610182
offset:0
hasthumb:1
thumbtotalsize:28016
rawthumbsize:28016
rawthumbmd5:d9739df8927040c3c7bae52d5e7dc61a
thumbcrc:2896646210
filedata:xxxxxxxxxxxxxxxxxxxxxxx
**代码: 无
操作步骤: 朋友圈发布图片，用WireShark抓包
** 任何其他描述: 想知道rsavalue是怎样生成的。
** 环境: ios