RSA_WITH_AES_128_CBC_SHA是TLSv1.2中最简单的加密协议了，非常适合用于学习TLSv1.2的握手过程。

RSA_WITH_AES_128_CBC_SHA表示

使用RSA非对称加密进行密钥协商
使用AES128 CBC模式加密
Hash算法使用SHA-1

参考文档：rfc5246 rfc5077 rfc7627

1. tomcat配置https环境

参考：https://blog.csdn.net/chenshun123/article/details/53453402

1.1. 服务端证书私钥（server.pem）

1.2. 客户端证书私钥（client.pem）

1.3. tomcat配置

tomcat版本为 v8.5.63，server.xml如下配置，启用了双向认证

    <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"
               maxThreads="150" SSLEnabled="true"
               scheme="https"
               secure="true"
               clientAuth="true"
               sslProtocol="TLS"
               sslEnabledProtocols="TLSv1.2"
               useServerCipherSuitesOrder="true"     
               ciphers="TLS_RSA_WITH_AES_128_CBC_SHA"
               keystoreFile="D:/Tomcat/jks/server.keystore"
               keystorePass="123456"
               truststoreFile="D:/Tomcat/jks/server.keystore"
               truststorePass="123456">
    </Connector>

把 port 以及 store file路径和密码修改为实际配置

2. 握手流程

使用chrome浏览器访问：

https://192.168.0.252:8443/webks/webks/ClientSrv

抓包如下：

握手流程如下：

2.1. ClientHello

client ----> server

Handshake数据：

客户端生成的随机数为：

3defe4aeefe2823d83125a7ffaf6e8da55663f9c9b489455e3fa02dccbb4b386

注意：client_hello 数据中包含了extended_master_secret 扩展，这会影响后续master_secret数据的计算

2.2. ServerHello

server ----> client

Handshake数据：

02000035030310300d3fc259adedf24883a2003b839455c9ec65ef8d04a3a32d820b2cdb6f7d00002f00000dff010001000023000000170000

服务端生成的随机数为：

10300d3fc259adedf24883a2003b839455c9ec65ef8d04a3a32d820b2cdb6f7d

2.3. Certificate (server)

server ----> client

Handshake数据：

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

2.4. CertificateRequest

server ----> client

Handshake数据：

0d0000a003010240002e040305030603080708080809080a080b080408050806040105010601030302030301020103020202040205020602006a00683066310b3009060355040613027a68310b3009060355040813026764310b300906035504071302677a3110300e060355040a1307646576656c6f703111300f060355040b13086368656e7368756e311830160603550403130f6368656e7368756e3133312e636f6d

2.5. ServerHelloDone

server ----> client

Handshake数据：

0e000000

2.6. Certificate (client)

client ----> server

Handshake数据：

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

2.7. ClientKeyExchange

client ----> server

Handshake数据：

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

解析获取Encrypted Premaster数据：

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

使用服务端证书私钥解密：

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

pre_master_secret 数据：

struct {
ProtocolVersion client_version;
opaque random[46];
} PreMasterSecret;

030306de06b93c702efe62e8b7374c7012b2e98eeae027a8f56af5e7dff0047863277b4b87f73adb8f98f8e3a3ce1641

2.7.1 计算 Master Secret

rfc5246 第8.1节定义的计算规则为：

master_secret = PRF(pre_master_secret, "master secret",ClientHello.random + ServerHello.random)

但是此处握手因为 client_hello 消息带有 extended_master_secret 扩展，根据rfc7627 第4节定义的计算规则为：

master_secret = PRF(pre_master_secret, "extended master secret", session_hash)

其中，session_hash的计算规则在rfc7627 第3节定义：

session_hash = Hash(handshake_messages)

handshake_message为 2.1 至 2.7 的Handshake数据拼接数据：

Hash使用SHA-256，对上述handshake_message数据运算可得 session_hash 数据：

82d6bc8d19874cca5fc04db6f9ea9cdda99a15db212243d25bddb77aa49822be

使用 PRF 计算可得 master_secret 数据：

7bb571f36c38efba3eb95f5871391830116985671f8cb10de01c71c74319c49f9d2baaf1071490a19999ea56bf1e03dc

2.7.2 计算密钥

密钥包括：

两端的HMAC_SHA1的key

client_write_MAC_key[20]
server_write_MAC_key[20]

两端的AES加密密钥
client_write_key[16]
server_write_key[16]

长度共计为 72 字节。

根据 rfc5246 第6.3节定义，密钥数据计算公式为：

key_block = PRF(SecurityParameters.master_secret, "key expansion",
                      SecurityParameters.server_random + SecurityParameters.client_random);

master_secret 数据：

7bb571f36c38efba3eb95f5871391830116985671f8cb10de01c71c74319c49f9d2baaf1071490a19999ea56bf1e03dc

server_random 数据：

10300d3fc259adedf24883a2003b839455c9ec65ef8d04a3a32d820b2cdb6f7d

client_random 数据：

3defe4aeefe2823d83125a7ffaf6e8da55663f9c9b489455e3fa02dccbb4b386

使用 PRF 计算可得 key_blob 数据：

0d19a4197332db8266200724604c063d8cf116ff958513064070ba5137176bb621b27b80cc4c26e060381c0e233f4e1896bf61147da34652b824d8d1b789ddc05a94a4debb81d40f

client_write_MAC_key[20]：0d19a4197332db8266200724604c063d8cf116ff

server_write_MAC_key[20]：958513064070ba5137176bb621b27b80cc4c26e0

client_write_key[16]：60381c0e233f4e1896bf61147da34652

server_write_key[16]：b824d8d1b789ddc05a94a4debb81d40f

至此两端均可计算出密钥数据了

2.8. CertificateVerify

client ----> server

Handshake数据：

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

提取签名数据：

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

使用客户端证书私钥解密：

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

提取 hash 数据：

82d6bc8d19874cca5fc04db6f9ea9cdda99a15db212243d25bddb77aa49822be

与 2.7.1 节计算的 session_hash 数据一致，验签通过（参考 rfc5246 第7.4.8节）

2.9. ChangeCipherSpec (client)

client ----> server

2.10. Finished (client)

client ----> server

这是一个TLSCiphertext结构（参考 rfc2546 附录A.1节），

提取 Encrypted Handshake Message 数据：

977c701d3c6f0ae4d284751816a7ab73b40e90b26d209e2d9128031874b8311fdf8f50edfef9db071c12ab4fbc41e931268ce046c53f4ab4670988e481fbc335

前16个字节为AES-CBC解密模式的IV数据：

977c701d3c6f0ae4d284751816a7ab73

之后为密文数据：

b40e90b26d209e2d9128031874b8311fdf8f50edfef9db071c12ab4fbc41e931268ce046c53f4ab4670988e481fbc335

使用2.7.2节计算的 client_write_key[16]：60381c0e233f4e1896bf61147da34652 作为AES-CBC解密模式密钥进行解密获取原始数据：

1400000c83c23dd8f9220c593a2673492ec78d22bfea15e8f20cdade865c49d7424828e30b0b0b0b0b0b0b0b0b0b0b0b

去填充后获取Handshake及MAC数据：

1400000c83c23dd8f9220c593a2673492ec78d22bfea15e8f20cdade865c49d7424828e3

这是一个 GenericStreamCipher 结构（参考 rfc2546 附录A.1节），content 为Handshake结构（参考 rfc2546 第7.4节），解析如下：

偏移	长度	数据	说明
0x00	1	14	HandshakeType.finished
0x01	3	00000c	length
0x04	12	83c23dd8f9220c593a267349	Finished.verify_data
0x10	20	2ec78d22bfea15e8f20cdade865c49d7424828e3	MAC

2.10.1 计算 verify_data

根据 rfc5246 第7.4.9节定义，verify_data 的计算规则为：

verify_data = PRF(master_secret, finished_label, Hash(handshake_messages))

handshake_message为 2.1 至 2.8 的Handshake数据拼接数据（不包括ChangeCipherSpec）：

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

使用SHA-256对 handshake_message 运算：

397d4f853bf33a533370ab3f60b13b1bfb0cd20761bde164658a402280e5dc1a

finished_label为：“client finished”；master_secret 为2.7.1节计算结果；

使用 PRF 计算可得 verify_data 数据：

83c23dd8f9220c593a267349

与表格中所列 Finished.verify_data 数据一致，校验通过。

2.10.2 计算 MAC

根据 rfc5246 第6.2.3.1节定义，MAC的计算规则为：

MAC(MAC_write_key, seq_num +
                            TLSCompressed.type +
                            TLSCompressed.version +
                            TLSCompressed.length +
                            TLSCompressed.fragment);

seq_num 初始值为0000000000000000，8个字节；

TLSCompressed结构定义参考 rfc2546 附录A.1节：

type = Handshake = 0x16，1个字节；

version = 0x0303，2个字节；

length = 0x0010，2个字节，表示Finished消息体的长度；

fragment = 1400000c83c23dd8f9220c593a267349，16个字节

则进行MAC运算的原始数据为：

000000000000000016030300101400000c83c23dd8f9220c593a267349

使用2.7.2节计算的 client_write_MAC_key[20]：0d19a4197332db8266200724604c063d8cf116ff作为MAC_write_key，使用 HMAC-SHA1 计算MAC结果为：

2ec78d22bfea15e8f20cdade865c49d7424828e3

与表格中所列 MAC 数据一致，校验通过。

2.11. NewSessionTicket

server ----> client

参考 rfc5077 第3.3节定义

Handshake数据：

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

2.12. ChangeCipherSpec (server)

server ----> client

2.13. Finished (server)

server ----> client

参考2.10节数据处理方法，

提取 Encrypted Handshake Message 数据：

19815312fc7c55bd42d5990938a4b36d556535c3e3bd2e79a48cb6d16a02869c10dcc6b86072aed08222b959a35e76e3796a94c7e35d2ccad6f73077bb10d9bc

使用2.7.2节计算的 client_write_key[16]：60381c0e233f4e1896bf61147da34652 作为AES-CBC解密模式密钥进行解密获取Handshake及MAC数据：

1400000cf3bd666f0519f59dd62935224643eccf7fb0d847e83af62d58693b7f6e4e8b4c

偏移	长度	数据	说明
0x00	1	14	HandshakeType.finished
0x01	3	00000c	length
0x04	12	f3bd666f0519f59dd6293522	Finished.verify_data
0x10	20	4643eccf7fb0d847e83af62d58693b7f6e4e8b4c	MAC

2.13.1 计算 verify_data

handshake_message为 2.1 至 2.11 的Handshake数据拼接数据（不包括ChangeCipherSpec）：

（2.10节的Handshake数据为明文数据：1400000c83c23dd8f9220c593a267349）

使用SHA-256对 handshake_message 运算：

3ae4a1aae4ec42dd84b9e6edf2812bb5c7fa0667a48b10bccd6af0423e138260

finished_label为：“server finished”；master_secret 为2.7.1节计算结果；

使用 PRF 计算可得 verify_data 数据：

f3bd666f0519f59dd6293522

与表格中所列 Finished.verify_data 数据一致，校验通过。

2.13.2 计算 MAC

seq_num 初始值为0000000000000000，8个字节；

TLSCompressed结构定义参考 rfc2546 附录A.1节：

type = Handshake = 0x16，1个字节；

version = 0x0303，2个字节；

length = 0x0010，2个字节，表示Finished消息体的长度；

fragment = 1400000cf3bd666f0519f59dd6293522，16个字节

则进行MAC运算的原始数据为：

000000000000000016030300101400000cf3bd666f0519f59dd6293522

使用2.7.2节计算的 server_write_MAC_key[20]：958513064070ba5137176bb621b27b80cc4c26e0作为MAC_write_key，使用 HMAC-SHA1 计算MAC结果为：

4643eccf7fb0d847e83af62d58693b7f6e4e8b4c

与表格中所列 MAC 数据一致，校验通过。

3. 数据保护

从ChangeCipherSpec之后的网络交互数据都已经是加密的数据了（2.10节和2.13节的Finished数据即为加密数据），使用的是TLSCiphertext结构（参考 rfc5246 第6.2.3节）

3.1 客户端请求数据

提取密文数据：

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

提取前16个字节作为IV：

38baa62e9854384bcf779481425ad34d

之后为密文数据：

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

使用2.7.2节计算的 client_write_key[16]：60381c0e233f4e1896bf61147da34652 作为密钥进行解密获取明文数据（去填充）：

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

其中最后20个字节为MAC：

e44662cd09a0b7be7bcb744f62a8a35f0bdb2ccd

其余为客户端请求数据，转为UTF-8编码：

GET /webks/webks/ClientSrv HTTP/1.1
Host: 192.168.0.252:8443
Connection: keep-alive
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: none
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9

3.1.1 计算MAC

seq_num 为0000000000000001，8个字节；

TLSCompressed结构定义参考 rfc2546 附录A.1节：

type = Application Data = 0x17，1个字节；

version = 0x0303，2个字节；

length = 0x0246，2个字节，表示客户端请求数据的长度；

fragment = 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，582个字节

则进行MAC运算的原始数据为：

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

使用2.7.2节计算的 client_write_MAC_key[20]：0d19a4197332db8266200724604c063d8cf116ff作为MAC_write_key，使用 HMAC-SHA1 计算MAC结果为：

e44662cd09a0b7be7bcb744f62a8a35f0bdb2ccd

3.2 服务端返回数据

提取密文数据：

8926bcd7a79659d2d6822ece0b66ee590cfd96f0863f5b74f6456cdbd2cce4db878c73785f1edb412e0ecb97d54fce74300c6a673af621b3c849ede3013de046e80c99c7594b34b5033dee5a077fdac3d9c0bf602f284e09cce080527e75379360efef954bbe94c62440c5cf80158d49c340cec0fcfb5d016c7bdeed2ee3161e537f5935770ac787dba20a41620d400e2e0291decd09d28d31d145760aaf25d07aef1ceeab764534eb703ddf0242decfec59536fe86cb19b0d67c3938587900842608dbff5bb5d9d471cc4e85fa0d2a5

提取前16个字节作为IV：

8926bcd7a79659d2d6822ece0b66ee59

之后为密文数据：

0cfd96f0863f5b74f6456cdbd2cce4db878c73785f1edb412e0ecb97d54fce74300c6a673af621b3c849ede3013de046e80c99c7594b34b5033dee5a077fdac3d9c0bf602f284e09cce080527e75379360efef954bbe94c62440c5cf80158d49c340cec0fcfb5d016c7bdeed2ee3161e537f5935770ac787dba20a41620d400e2e0291decd09d28d31d145760aaf25d07aef1ceeab764534eb703ddf0242decfec59536fe86cb19b0d67c3938587900842608dbff5bb5d9d471cc4e85fa0d2a5

使用2.7.2节计算的 server_write_key[16]：b824d8d1b789ddc05a94a4debb81d40f作为密钥进行解密获取明文数据（去填充）：

485454502f312e3120323030200d0a436f6e74656e742d547970653a20746578742f68746d6c3b636861727365743d5554462d380d0a436f6e74656e742d4c656e6774683a20360d0a446174653a204d6f6e2c2032312041756720323032332031313a32363a313020474d540d0a4b6565702d416c6976653a2074696d656f75743d36300d0a436f6e6e656374696f6e3a206b6565702d616c6976650d0a0d0a646464646464dcb3c3f98a2c7645b3be4ece10648040f70d42dc

其中最后20个字节为MAC：

dcb3c3f98a2c7645b3be4ece10648040f70d42dc

其余为客户端请求数据，转为UTF-8编码：

HTTP/1.1 200 
Content-Type: text/html;charset=UTF-8
Content-Length: 6
Date: Mon, 21 Aug 2023 11:26:10 GMT
Keep-Alive: timeout=60
Connection: keep-alive

dddddd

3.2.1 计算MAC

seq_num 为0000000000000001，8个字节；

TLSCompressed结构定义参考 rfc2546 附录A.1节：

type = Application Data = 0x17，1个字节；

version = 0x0303，2个字节；

length = 0x00A6，2个字节，表示客户端请求数据的长度；

fragment = 485454502f312e3120323030200d0a436f6e74656e742d547970653a20746578742f68746d6c3b636861727365743d5554462d380d0a436f6e74656e742d4c656e6774683a20360d0a446174653a204d6f6e2c2032312041756720323032332031313a32363a313020474d540d0a4b6565702d416c6976653a2074696d656f75743d36300d0a436f6e6e656374696f6e3a206b6565702d616c6976650d0a0d0a646464646464，166个字节

则进行MAC运算的原始数据为：

000000000000000117030300A6485454502f312e3120323030200d0a436f6e74656e742d547970653a20746578742f68746d6c3b636861727365743d5554462d380d0a436f6e74656e742d4c656e6774683a20360d0a446174653a204d6f6e2c2032312041756720323032332031313a32363a313020474d540d0a4b6565702d416c6976653a2074696d656f75743d36300d0a436f6e6e656374696f6e3a206b6565702d616c6976650d0a0d0a646464646464

使用2.7.2节计算的 server_write_MAC_key[20]：958513064070ba5137176bb621b27b80cc4c26e0作为MAC_write_key，使用 HMAC-SHA1 计算MAC结果为：

dcb3c3f98a2c7645b3be4ece10648040f70d42dc