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TLCP中ECDHE_SM4_GCM_SM3/ECDHE_SM4_CBC_SM3，使用SM2 key exchange生成的到底是预主密钥还是主密钥？

Open emmansun opened this issue 3 years ago • 1 comments

TLCP中ECDHE_SM4_GCM_SM3/ECDHE_SM4_CBC_SM3，使用SM2 key exchange生成的到底是预主密钥还是主密钥？ 如果是预主密钥，长度是多少？这个在GB/T 38636-2020也没有看到详细信息。

emmansun avatar Oct 17 '22 03:10 emmansun

https://github.com/jntass/TASSL/blob/6e2acf2cbe6e3de1011c7cca967bed3e93b6f0a5/ssl/s3_clnt.c#L3143

这里是预主密钥，长度48

emmansun avatar Oct 17 '22 05:10 emmansun