RSA PKCS1和PKCS8的ASN格式

最近要和支付宝支付做个对接，然后发现自己对RSA一无所知。。。。补知识点吧。。。。

嗯，百度了一下Sha256withRSA，出现了一大堆文章，嗯，都很好，学习中。。。。。

然后，将支付宝提供的测试密钥导入到c#，出现问题了，一直失败，好吧，c#的证书格式和支付宝提供的不一样，支付宝使用的是openssl生成的密钥，再次百度c# rsa openssl，很好，又一大堆需要学习的内容，同时也明白了，openssl的密钥格式是asn.1格式的

最后，因为文盲自己是需要.net环境的，所以重点关注了一下c#相关的内容，找了几篇文章，终于可以把PKCS8和PKCS1格式的asn密钥文件成功导入到c#中了

参考目录：

https://www.cnblogs.com/lidj/p/5220816.html  C#中使用OpenSSL的公钥加密/私钥解密

http://www.cnblogs.com/adylee/p/3611491.html  .NET导入openssl生成的公钥之BEGIN RSA PUBLIC KEY 

https://www.codeproject.com/Articles/25487/Cryptographic-Interoperability-Keys  Cryptographic Interoperability: Keys

然后，终于明白了PKCS1和PKCS8的密钥格式。。。。其实说起来也非常简单。。。。

先说说PKCS1的私钥密钥格式

-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

以上是支付宝生成的一个私钥证书，掐头去尾之后，解码一下base64得到数组

48,130,4,163,2,1,0,2,130,1,1,0,152,186,208,26,245,225,176,169,17,210,102,62,152,149,78,203,155,201,113,158,246,196,199,198,84,77,200,202,218,34,249,30,121,38,203,95,143,166,59,175,74,235,228,84,100,222,168,198,178,207,174,87,110,102,197,19,17,198,227,102,169,195,250,203,135,124,244,95,77,92,169,34,92,113,227,231,161,253,190,212,194,186,37,160,204,29,149,154,146,64,115,191,213,219,161,202,231,217,45,243,9,93,59,156,230,51,205,88,219,34,64,172,221,52,121,216,249,155,127,147,243,56,2,177,136,186,8,189,104,68,246,3,82,182,189,146,137,59,146,44,215,5,25,118,61,68,241,38,104,199,165,46,197,148,135,111,121,138,27,25,199,170,112,63,52,71,206,163,142,224,106,135,198,74,216,88,87,227,128,216,50,70,166,243,70,194,238,12,119,230,90,188,203,148,167,194,247,242,9,189,71,9,169,198,153,92,241,55,181,201,159,75,57,77,232,177,152,14,60,236,186,74,194,133,251,56,56,206,14,236,71,66,30,64,224,115,248,194,188,220,103,130,19,215,49,129,159,72,111,139,16,91,87,60,12,25,2,3,1,0,1,2,130,1,0,60,121,140,57,128,174,210,226,191,57,206,94,110,208,128,24,195,32,234,170,133,15,186,2,224,18,196,180,253,214,231,73,151,179,50,200,45,251,38,154,236,81,167,97,123,103,102,240,246,144,161,121,225,47,52,77,174,182,80,8,176,163,247,68,107,235,160,95,180,36,66,156,102,122,122,65,151,180,255,193,3,49,238,0,83,146,75,80,159,36,130,48,173,159,127,218,246,30,218,192,231,46,81,146,120,220,126,44,246,232,3,47,239,142,253,200,90,93,166,16,145,55,214,105,49,184,104,8,235,3,235,143,25,82,251,167,46,214,220,41,3,252,159,225,49,119,194,239,235,162,190,151,6,162,160,139,98,29,199,37,58,3,20,45,98,89,161,80,91,44,103,56,143,60,191,86,112,17,176,171,99,98,80,151,228,136,23,151,138,124,178,175,87,232,161,100,143,117,213,228,7,217,238,82,168,105,146,187,209,58,17,87,4,130,134,110,237,72,244,103,121,168,224,129,162,118,0,111,129,92,97,231,235,7,14,155,160,3,192,122,254,240,187,207,132,169,165,221,245,12,199,155,147,135,70,1,2,129,129,0,202,115,72,100,151,178,62,38,241,127,82,55,151,72,183,17,16,172,221,127,226,74,243,192,146,33,50,103,157,180,247,90,2,251,189,145,87,166,117,136,127,161,59,107,5,89,199,162,170,105,161,233,192,76,197,182,152,110,105,90,235,159,64,203,46,47,115,133,233,163,60,122,26,20,172,220,137,112,152,68,73,115,57,175,98,174,123,86,114,124,240,148,167,142,54,79,83,98,232,198,17,202,199,221,40,50,71,136,129,233,0,52,67,246,243,242,119,209,95,49,167,226,179,144,180,52,195,185,2,129,129,0,193,32,192,90,141,198,121,213,193,159,75,178,223,253,15,186,45,181,145,202,3,176,78,33,97,7,227,169,27,135,180,168,106,126,15,159,176,184,111,143,17,145,71,24,69,56,88,81,156,149,240,143,68,22,34,63,4,141,46,177,104,184,178,81,243,167,255,114,197,223,201,61,30,247,247,42,192,28,177,235,171,106,142,62,10,208,84,67,186,206,240,71,72,56,196,137,207,30,169,45,102,60,41,18,82,88,115,134,51,213,64,215,147,121,208,81,161,180,104,128,28,85,39,76,160,212,123,97,2,129,128,26,112,137,224,209,74,239,1,9,3,22,202,185,208,62,80,85,60,46,69,88,89,111,146,19,195,144,32,166,33,15,56,203,48,243,101,250,235,123,104,19,59,12,86,130,193,97,232,37,151,92,20,250,15,76,182,247,27,92,89,10,114,166,244,162,24,130,94,215,207,128,195,117,138,131,180,221,162,61,208,149,67,30,34,128,161,198,235,216,81,230,221,147,48,104,121,93,171,138,56,235,243,238,188,60,86,172,174,240,64,108,205,102,158,230,231,32,172,208,96,220,203,39,166,91,82,148,201,2,129,129,0,157,183,49,94,194,9,35,213,252,153,42,40,153,226,255,196,251,47,28,47,237,115,61,90,228,242,156,104,173,162,213,85,244,33,158,128,186,192,227,217,226,110,209,176,112,86,227,73,66,166,240,29,15,109,67,234,82,189,57,52,136,96,204,191,64,76,33,192,136,247,136,79,241,202,110,126,235,4,132,8,1,164,179,36,215,143,234,64,165,125,249,155,60,207,159,49,43,131,206,132,212,200,172,129,217,221,129,250,70,186,16,137,252,85,174,89,251,196,104,210,182,80,148,23,112,0,22,1,2,129,128,79,166,108,232,100,185,96,200,168,202,104,109,0,32,104,240,44,55,97,98,30,27,206,230,139,35,23,223,17,237,151,152,142,78,181,5,247,92,1,26,213,64,206,142,78,244,207,98,244,35,105,249,14,184,210,169,39,46,248,98,130,70,114,130,26,22,132,184,178,1,248,20,140,45,237,112,152,195,252,148,107,48,129,82,249,253,171,24,85,78,240,158,202,132,0,64,166,58,184,202,187,83,203,56,250,161,203,37,57,251,38,115,113,75,171,165,20,152,121,186,106,116,30,97,121,81,29,76

然后，就开始准备把他弄成c#所对应的RSAParameters对象

来看看各个字节所描述的意义吧

48    RSA 标示第一字节
130    长度占用字节描述方式，长度计算方式，如果小于128，自身表示长度值，否则与127进行与运算，得到的结果为长度，但与运算后的长度不得大于3，例如130表示长度占2位
4,163    长度值，计算方式为第一字节为最高位，顺序后排，例如这个值的结果就是0x04a3，即4*256+163，得到1187，此处的长度值为该字节之后的所有字节数，且需要验证通过
2    RSA 私钥证书固定字节
1    长度
0    RSA 描述头结束，该字节必须为0
2    PKCS1 长度开始标示
130    长度占用字节描述方式
1,1    长度值
0    此字节开始，连续的0值字节为填充内容，需要忽视，且忽视掉的字节数需要被长度减掉
152,186,208,26,245,225,176,169,17,210,102,62,152,149,78,203,155,201,113,158,246,196,199,198,84,77,200,202,218,34,249,30,121,38,203,95,143,166,59,175,74,235,228,84,100,222,168,198,178,207,174,87,110,102,197,19,17,198,227,102,169,195,250,203,135,124,244,95,77,92,169,34,92,113,227,231,161,253,190,212,194,186,37,160,204,29,149,154,146,64,115,191,213,219,161,202,231,217,45,243,9,93,59,156,230,51,205,88,219,34,64,172,221,52,121,216,249,155,127,147,243,56,2,177,136,186,8,189,104,68,246,3,82,182,189,146,137,59,146,44,215,5,25,118,61,68,241,38,104,199,165,46,197,148,135,111,121,138,27,25,199,170,112,63,52,71,206,163,142,224,106,135,198,74,216,88,87,227,128,216,50,70,166,243,70,194,238,12,119,230,90,188,203,148,167,194,247,242,9,189,71,9,169,198,153,92,241,55,181,201,159,75,57,77,232,177,152,14,60,236,186,74,194,133,251,56,56,206,14,236,71,66,30,64,224,115,248,194,188,220,103,130,19,215,49,129,159,72,111,139,16,91,87,60,12,25    RSAParameters.Modulus 数据
2    PKCS1 长度开始标示
3    长度占用字节描述方式
1,0,1    RSAParameters.Exponent 数据
2    PKCS1 长度开始标示
130    长度占用字节描述方式
1,0    长度值
60,121,140,57,128,174,210,226,191,57,206,94,110,208,128,24,195,32,234,170,133,15,186,2,224,18,196,180,253,214,231,73,151,179,50,200,45,251,38,154,236,81,167,97,123,103,102,240,246,144,161,121,225,47,52,77,174,182,80,8,176,163,247,68,107,235,160,95,180,36,66,156,102,122,122,65,151,180,255,193,3,49,238,0,83,146,75,80,159,36,130,48,173,159,127,218,246,30,218,192,231,46,81,146,120,220,126,44,246,232,3,47,239,142,253,200,90,93,166,16,145,55,214,105,49,184,104,8,235,3,235,143,25,82,251,167,46,214,220,41,3,252,159,225,49,119,194,239,235,162,190,151,6,162,160,139,98,29,199,37,58,3,20,45,98,89,161,80,91,44,103,56,143,60,191,86,112,17,176,171,99,98,80,151,228,136,23,151,138,124,178,175,87,232,161,100,143,117,213,228,7,217,238,82,168,105,146,187,209,58,17,87,4,130,134,110,237,72,244,103,121,168,224,129,162,118,0,111,129,92,97,231,235,7,14,155,160,3,192,122,254,240,187,207,132,169,165,221,245,12,199,155,147,135,70,1    RSAParameters.D 数据
2    PKCS1 长度开始标示
129    长度占用字节描述方式
129    长度值
0    填充的空数据
202,115,72,100,151,178,62,38,241,127,82,55,151,72,183,17,16,172,221,127,226,74,243,192,146,33,50,103,157,180,247,90,2,251,189,145,87,166,117,136,127,161,59,107,5,89,199,162,170,105,161,233,192,76,197,182,152,110,105,90,235,159,64,203,46,47,115,133,233,163,60,122,26,20,172,220,137,112,152,68,73,115,57,175,98,174,123,86,114,124,240,148,167,142,54,79,83,98,232,198,17,202,199,221,40,50,71,136,129,233,0,52,67,246,243,242,119,209,95,49,167,226,179,144,180,52,195,185    RSAParameters.P 数据
2    PKCS1 长度开始标示
129    长度占用字节描述方式
129    长度值
0    填充的空数据
193,32,192,90,141,198,121,213,193,159,75,178,223,253,15,186,45,181,145,202,3,176,78,33,97,7,227,169,27,135,180,168,106,126,15,159,176,184,111,143,17,145,71,24,69,56,88,81,156,149,240,143,68,22,34,63,4,141,46,177,104,184,178,81,243,167,255,114,197,223,201,61,30,247,247,42,192,28,177,235,171,106,142,62,10,208,84,67,186,206,240,71,72,56,196,137,207,30,169,45,102,60,41,18,82,88,115,134,51,213,64,215,147,121,208,81,161,180,104,128,28,85,39,76,160,212,123,97    RSAParameters.Q 数据
2    PKCS1 长度开始标示
129    长度占用字节描述方式
128    长度值
26,112,137,224,209,74,239,1,9,3,22,202,185,208,62,80,85,60,46,69,88,89,111,146,19,195,144,32,166,33,15,56,203,48,243,101,250,235,123,104,19,59,12,86,130,193,97,232,37,151,92,20,250,15,76,182,247,27,92,89,10,114,166,244,162,24,130,94,215,207,128,195,117,138,131,180,221,162,61,208,149,67,30,34,128,161,198,235,216,81,230,221,147,48,104,121,93,171,138,56,235,243,238,188,60,86,172,174,240,64,108,205,102,158,230,231,32,172,208,96,220,203,39,166,91,82,148,201    RSAParameters.DP 数据
2    PKCS1 长度开始标示
129    长度占用字节描述方式
129    长度值
0    填充的空数据
157,183,49,94,194,9,35,213,252,153,42,40,153,226,255,196,251,47,28,47,237,115,61,90,228,242,156,104,173,162,213,85,244,33,158,128,186,192,227,217,226,110,209,176,112,86,227,73,66,166,240,29,15,109,67,234,82,189,57,52,136,96,204,191,64,76,33,192,136,247,136,79,241,202,110,126,235,4,132,8,1,164,179,36,215,143,234,64,165,125,249,155,60,207,159,49,43,131,206,132,212,200,172,129,217,221,129,250,70,186,16,137,252,85,174,89,251,196,104,210,182,80,148,23,112,0,22,1    RSAParameters.DQ 数据
2    PKCS1 长度开始标示
129    长度占用字节描述方式
128    长度值
79,166,108,232,100,185,96,200,168,202,104,109,0,32,104,240,44,55,97,98,30,27,206,230,139,35,23,223,17,237,151,152,142,78,181,5,247,92,1,26,213,64,206,142,78,244,207,98,244,35,105,249,14,184,210,169,39,46,248,98,130,70,114,130,26,22,132,184,178,1,248,20,140,45,237,112,152,195,252,148,107,48,129,82,249,253,171,24,85,78,240,158,202,132,0,64,166,58,184,202,187,83,203,56,250,161,203,37,57,251,38,115,113,75,171,165,20,152,121,186,106,116,30,97,121,81,29,76    RSAParameters.InverseQ 数据

这么一看，openssl生成的PKCS1格式的内容，变成c#中的RSAParameters好简单啊

嗯，再看看PKCS8的

-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----

用同样的方式掐头去尾解个码，得到

48,130,4,189,2,1,0,48,13,6,9,42,134,72,134,247,13,1,1,1,5,0,4,130,4,167,48,130,4,163,2,1,0,2,130,1,1,0,152,186,208,26,245,225,176,169,17,210,102,62,152,149,78,203,155,201,113,158,246,196,199,198,84,77,200,202,218,34,249,30,121,38,203,95,143,166,59,175,74,235,228,84,100,222,168,198,178,207,174,87,110,102,197,19,17,198,227,102,169,195,250,203,135,124,244,95,77,92,169,34,92,113,227,231,161,253,190,212,194,186,37,160,204,29,149,154,146,64,115,191,213,219,161,202,231,217,45,243,9,93,59,156,230,51,205,88,219,34,64,172,221,52,121,216,249,155,127,147,243,56,2,177,136,186,8,189,104,68,246,3,82,182,189,146,137,59,146,44,215,5,25,118,61,68,241,38,104,199,165,46,197,148,135,111,121,138,27,25,199,170,112,63,52,71,206,163,142,224,106,135,198,74,216,88,87,227,128,216,50,70,166,243,70,194,238,12,119,230,90,188,203,148,167,194,247,242,9,189,71,9,169,198,153,92,241,55,181,201,159,75,57,77,232,177,152,14,60,236,186,74,194,133,251,56,56,206,14,236,71,66,30,64,224,115,248,194,188,220,103,130,19,215,49,129,159,72,111,139,16,91,87,60,12,25,2,3,1,0,1,2,130,1,0,60,121,140,57,128,174,210,226,191,57,206,94,110,208,128,24,195,32,234,170,133,15,186,2,224,18,196,180,253,214,231,73,151,179,50,200,45,251,38,154,236,81,167,97,123,103,102,240,246,144,161,121,225,47,52,77,174,182,80,8,176,163,247,68,107,235,160,95,180,36,66,156,102,122,122,65,151,180,255,193,3,49,238,0,83,146,75,80,159,36,130,48,173,159,127,218,246,30,218,192,231,46,81,146,120,220,126,44,246,232,3,47,239,142,253,200,90,93,166,16,145,55,214,105,49,184,104,8,235,3,235,143,25,82,251,167,46,214,220,41,3,252,159,225,49,119,194,239,235,162,190,151,6,162,160,139,98,29,199,37,58,3,20,45,98,89,161,80,91,44,103,56,143,60,191,86,112,17,176,171,99,98,80,151,228,136,23,151,138,124,178,175,87,232,161,100,143,117,213,228,7,217,238,82,168,105,146,187,209,58,17,87,4,130,134,110,237,72,244,103,121,168,224,129,162,118,0,111,129,92,97,231,235,7,14,155,160,3,192,122,254,240,187,207,132,169,165,221,245,12,199,155,147,135,70,1,2,129,129,0,202,115,72,100,151,178,62,38,241,127,82,55,151,72,183,17,16,172,221,127,226,74,243,192,146,33,50,103,157,180,247,90,2,251,189,145,87,166,117,136,127,161,59,107,5,89,199,162,170,105,161,233,192,76,197,182,152,110,105,90,235,159,64,203,46,47,115,133,233,163,60,122,26,20,172,220,137,112,152,68,73,115,57,175,98,174,123,86,114,124,240,148,167,142,54,79,83,98,232,198,17,202,199,221,40,50,71,136,129,233,0,52,67,246,243,242,119,209,95,49,167,226,179,144,180,52,195,185,2,129,129,0,193,32,192,90,141,198,121,213,193,159,75,178,223,253,15,186,45,181,145,202,3,176,78,33,97,7,227,169,27,135,180,168,106,126,15,159,176,184,111,143,17,145,71,24,69,56,88,81,156,149,240,143,68,22,34,63,4,141,46,177,104,184,178,81,243,167,255,114,197,223,201,61,30,247,247,42,192,28,177,235,171,106,142,62,10,208,84,67,186,206,240,71,72,56,196,137,207,30,169,45,102,60,41,18,82,88,115,134,51,213,64,215,147,121,208,81,161,180,104,128,28,85,39,76,160,212,123,97,2,129,128,26,112,137,224,209,74,239,1,9,3,22,202,185,208,62,80,85,60,46,69,88,89,111,146,19,195,144,32,166,33,15,56,203,48,243,101,250,235,123,104,19,59,12,86,130,193,97,232,37,151,92,20,250,15,76,182,247,27,92,89,10,114,166,244,162,24,130,94,215,207,128,195,117,138,131,180,221,162,61,208,149,67,30,34,128,161,198,235,216,81,230,221,147,48,104,121,93,171,138,56,235,243,238,188,60,86,172,174,240,64,108,205,102,158,230,231,32,172,208,96,220,203,39,166,91,82,148,201,2,129,129,0,157,183,49,94,194,9,35,213,252,153,42,40,153,226,255,196,251,47,28,47,237,115,61,90,228,242,156,104,173,162,213,85,244,33,158,128,186,192,227,217,226,110,209,176,112,86,227,73,66,166,240,29,15,109,67,234,82,189,57,52,136,96,204,191,64,76,33,192,136,247,136,79,241,202,110,126,235,4,132,8,1,164,179,36,215,143,234,64,165,125,249,155,60,207,159,49,43,131,206,132,212,200,172,129,217,221,129,250,70,186,16,137,252,85,174,89,251,196,104,210,182,80,148,23,112,0,22,1,2,129,128,79,166,108,232,100,185,96,200,168,202,104,109,0,32,104,240,44,55,97,98,30,27,206,230,139,35,23,223,17,237,151,152,142,78,181,5,247,92,1,26,213,64,206,142,78,244,207,98,244,35,105,249,14,184,210,169,39,46,248,98,130,70,114,130,26,22,132,184,178,1,248,20,140,45,237,112,152,195,252,148,107,48,129,82,249,253,171,24,85,78,240,158,202,132,0,64,166,58,184,202,187,83,203,56,250,161,203,37,57,251,38,115,113,75,171,165,20,152,121,186,106,116,30,97,121,81,29,76

再看看这个数据对应的意义如何？

48    RSA 标示第一字节
130    长度占用字节描述方式，长度计算方式，如果小于128，自身表示长度值，否则与127进行与运算，得到的结果为长度，但与运算后的长度不得大于3，例如130表示长度占2位
4,189    长度值，计算方式为第一字节为最高位，顺序后排，例如这个值的结果就是0x04bd，即4*256+189，得到1213，此处的长度值为该字节之后的所有字节数，且需要验证通过
2    RSA 私钥证书固定字节
1    长度
0    RSA 描述头结束，该字节必须为0
48    PKCS8 长度开始标示
13    长度占用字节描述方式
6    此处字节值必须为6，不知道为什么
9    长度值
42,134,72,134,247,13,1,1,1    此处9个字节的值为固定，需验证通过，貌似是个PKCS8的版本描述？Expected OID 1.2.840.113549.1.1.1
5,0    如果此字节是5，则必须跟一个0，否则为其他填充数据，跳过第一个字节，0所在的字节为长度占用字节描述方式，并按照规则，跳过指定的长度的内容
4    验证字节，此字节必须为4，也不知道为什么
130    长度占用字节描述方式
4,167    长度值，该值与字后的字节总数相等，应该也需要验证通过，根据Cryptographic Interoperability: Keys中的代码，他验证了这个值不能大于后边的字节总长度
48    PKCS8 长度开始标示
130    长度占用字节描述方式
4,163    长度值，该值与字后的字节总数相等，应该也需要验证通过，根据Cryptographic Interoperability: Keys中的代码，他验证了这个值不能小于后边的字节总长度
2    RSA 私钥证书固定字节
1    长度
0    RSA 描述头结束，该字节必须为0
2    PKCS1 长度开始标示
130    长度占用字节描述方式
1,1    长度值
0    填充数据
152,186,208,26,245,225,176,169,17,210,102,62,152,149,78,203,155,201,113,158,246,196,199,198,84,77,200,202,218,34,249,30,121,38,203,95,143,166,59,175,74,235,228,84,100,222,168,198,178,207,174,87,110,102,197,19,17,198,227,102,169,195,250,203,135,124,244,95,77,92,169,34,92,113,227,231,161,253,190,212,194,186,37,160,204,29,149,154,146,64,115,191,213,219,161,202,231,217,45,243,9,93,59,156,230,51,205,88,219,34,64,172,221,52,121,216,249,155,127,147,243,56,2,177,136,186,8,189,104,68,246,3,82,182,189,146,137,59,146,44,215,5,25,118,61,68,241,38,104,199,165,46,197,148,135,111,121,138,27,25,199,170,112,63,52,71,206,163,142,224,106,135,198,74,216,88,87,227,128,216,50,70,166,243,70,194,238,12,119,230,90,188,203,148,167,194,247,242,9,189,71,9,169,198,153,92,241,55,181,201,159,75,57,77,232,177,152,14,60,236,186,74,194,133,251,56,56,206,14,236,71,66,30,64,224,115,248,194,188,220,103,130,19,215,49,129,159,72,111,139,16,91,87,60,12,25        RSAParameters.Modulus 数据
2    PKCS1 长度开始标示
3    长度占用字节描述方式
1,0,1    RSAParameters.Exponent 数据
2    PKCS1 长度开始标示
130    长度占用字节描述方式
1,0    长度值
.......之后和PKCS1的格式就一毛一样了。。。

额。。。。知道这几个关键格式，那么自己就可以很方便的双向转换了。。。。

简单来说，PKCS1和PKCS8的主要分歧开始在第八个字节，PKCS1直接进入到长度、数据的阶段了，而PKCS8则开始了一个验证阶段，但是验证阶段结束后，后边的数据和PKCS1开始进入到长度、数据阶段的内容又一毛一样。。。。

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附：c# 导入PKCS1和PKCS8密钥