[GH-ISSUE #3910] [Nodejs实现frpc visitor协议]报文长度解密请教

gitea-mirror commented

2026-05-05 14:00:33 -06:00

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Originally created by @ldjking on GitHub (Jan 5, 2024).
Original GitHub issue: https://github.com/fatedier/frp/issues/3910

Describe the feature request

在login成功后，得到明文的loginMsg，然后是16位的iv
然后是一段长度11的报文，第一位的typeByte 解密成功，后面8位的length解密失败，请教下如何正确解密length
encIv=[254,227,8,89,13,152,208,92,96,1,1,246,23,212,226,165]
encKey=[149,153,7,126,193,218,153,19,241,238,169,213,110,245,169,6]
enc typeDec=[r] typeByte=[114]
lengthBufferEnc=[8] data=[75,18,190,54,122,219,197,234]
lengthBufferDec=[8] data=[77,89,172,136,76,161,30,47]
declength=[5573675715248856623]

Describe alternatives you've considered

No response

Affected area

Docs
Installation
Performance and Scalability
Security
User Experience
Test and Release
Developer Infrastructure
Client Plugin
Server Plugin
Extensions
Others

Originally created by @ldjking on GitHub (Jan 5, 2024). Original GitHub issue: https://github.com/fatedier/frp/issues/3910 ### Describe the feature request 在login成功后，得到明文的loginMsg，然后是16位的iv 然后是一段长度11的报文，第一位的typeByte 解密成功，后面8位的length解密失败，请教下如何正确解密length encIv=[254,227,8,89,13,152,208,92,96,1,1,246,23,212,226,165] encKey=[149,153,7,126,193,218,153,19,241,238,169,213,110,245,169,6] enc typeDec=[r] typeByte=[114] lengthBufferEnc=[8] data=[75,18,190,54,122,219,197,234] lengthBufferDec=[8] data=[77,89,172,136,76,161,30,47] declength=[5573675715248856623] ### Describe alternatives you've considered _No response_ ### Affected area - [ ] Docs - [ ] Installation - [ ] Performance and Scalability - [ ] Security - [ ] User Experience - [ ] Test and Release - [ ] Developer Infrastructure - [ ] Client Plugin - [ ] Server Plugin - [ ] Extensions - [x] Others

gitea-mirror

2026-05-05 14:00:33 -06:00

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gitea-mirror commented

2026-05-05 14:00:36 -06:00

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@ldjking commented on GitHub (Jan 5, 2024):

整个报文长度11 一起解密可以成功。
单独解密1个字节，8个字节，2个字节，这样子不行。

@ldjking commented on GitHub (Jan 5, 2024): 整个报文长度11 一起解密可以成功。单独解密1个字节，8个字节，2个字节，这样子不行。

gitea-mirror commented

2026-05-05 14:00:37 -06:00

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@github-actions[bot] commented on GitHub (Jan 27, 2024):

Issues go stale after 21d of inactivity. Stale issues rot after an additional 7d of inactivity and eventually close.

@github-actions[bot] commented on GitHub (Jan 27, 2024): Issues go stale after 21d of inactivity. Stale issues rot after an additional 7d of inactivity and eventually close.

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