Add SM4 cipher (GB/T 32907-2016) support from SM4 enabled mbed TLS library #2424
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For any cipher change, please go to https://github.com/shadowsocks/shadowsocks-org/issues |
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Using SM4 for anti-censoring...This PR could definitely piss off those officers of OSCCA 🤣 |
Maybe anti-(NSA's)censoring🤣 |
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Since the old repository I hosted my Mbed TLS fork has long gone, I republished the repository at https://github.com/Low-power/mbedtls/tree/mbedtls-2.7-sm4 for anyone interested in that. |
zonyitoo
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- https://datatracker.ietf.org/doc/html/rfc8998 - shadowsocks/shadowsocks-libev#2424 If anyone interested in trying these non-standard ciphers, please take some time to get some background knowledge about the SM Cipher Suites.
zonyitoo
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- https://datatracker.ietf.org/doc/html/rfc8998 - shadowsocks/shadowsocks-libev#2424 If anyone interested in trying these non-standard ciphers, please take some time to get some background knowledge about the SM Cipher Suites.
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Hello.
There is a SM4 cipher support for mbed TLS in pull request Mbed-TLS/mbedtls#1165 some years. Unfortunately that pull request was still left unmerged and became outdated in current mbed TLS versions; however I still managed to merge that pull request into the long term support branch 2.7, and with this minor modification to shadowsocks-libev, the SM4 ciphers appears fully functional in shadowsocks-libev.
The implemented ciphers in shadowsocks-libev are
sm4-128-cbc,sm4-128-ctrandsm4-128-gcm.Until Mbed-TLS/mbedtls#1165 can be merged, mbed TLS woudn't offically supporting SM4 cipher, however I opened this pull request for discuss whether to check a downstream version of mbed TLS of this SM4 support, in shadowsocks-libev.
My mbed TLS branch with SM4 support merged is available at https://git.nsscn.top/Low-power/mbedtls/tree/mbedtls-2.7-sm4