Comments (6)
ZZMarquis
commented on July 17, 2024
hash指什么的hash？
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caoliangccut20121192
commented on July 17, 2024
就是国密把公钥X，和公钥Y全hash方法
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caoliangccut20121192
commented on July 17, 2024
e := calculateE(digest, &priv.Curve, pubX, pubY, userId, in) 假如我知道这个值，是否可以恢复公钥
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ZZMarquis
commented on July 17, 2024
你是说知道e，能不能把pubX和pubY反推出来？
我觉得是不行的，hash算法是不可逆的。
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caoliangccut20121192
commented on July 17, 2024
你写的那个签名r和s出来有时候为什么是31字节啊
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ZZMarquis
commented on July 17, 2024
R和S实际都是一个大数，如果恰巧是一个较小的数转成字节数组时就有可能是31字节，如果你需要32字节，在前面再加上一个0x00字节就行。
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Related Issues (17)
- 函数notEncrypted中的bug HOT 1
- x509转成publice key HOT 1
- sm2 Decrypt HOT 1
- 问题 关于公钥的 X, Y 如何生成 pem文件的字符串 HOT 3
- sm2签名在gmssl服务端验证失败 HOT 2
- 建议 HOT 1
- 针对sm2.Verify的cpu性能问题，有提升方案吗 HOT 3
- 能否加一个zeroPadding,不知道咋写 HOT 3
- Public key raw bytes length must be 64 HOT 7
- 仿造招行Java的Sm2SignWithSm3，实现的签名方法报错，请教大佬 HOT 7
- 为什么会出现 data[0] != 4 这个问题 HOT 1
- sign/verify结果输出问题 HOT 1
- sm2验签偶发性失败 HOT 8
- Java端SM2加密，golang无法解密，golang端SM2加密，java无法解密 HOT 1
- SM4加密结果JAVA无法解密 HOT 5
- sm2进行加解密时，建议对公钥的X和Y的[]byte类型进行填充 HOT 1
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