我正在尝试实施 RADIUS 协议。根据 RFC 2866,对于 RADIUS 计费,计算 Authenticator 字段时的步骤如下:
计费响应数据包中的身份验证器字段称为响应身份验证器,并包含通过八位位组流计算的单向 MD5 哈希值,该八位位组流由计费响应代码、标识符、长度、计费请求中的请求身份验证器字段组成正在回复的数据包,以及响应属性(如果有),后跟共享密钥。生成的 16 个八位字节 MD5 哈希值存储在计费响应数据包的验证器字段中。
我正在尝试计算它,但无法获得正确的值: Code = 5 (0x05) 1 byte Identifier: 134 (0x86) 1 byte Length: 20 (0x0014) 2 bytes Request Authenticator: bac85592365b2e786ad3095a1cf22646 ,16 bytes 没有属性在我的回复中共享秘密:63 21 6d 40 35 32 32 35 (c!m@5225)
因此 MD% 哈希的输入将是: 05860014bac85592365b2e786ad3095a1cf2264663216d4035323235 我使用这两个网站得到: b7ac1e6909302b06bd021aede380dbc5:http://www.md5hashgenerator.com/和http://www.mir aclesalad.com/webtools/md5.php
实际响应的身份验证器为 9629702dca9469714fb423ca7b1525bc 我正在比较客户端/服务器发送的真实 RADIUS 数据包,并且我计算的身份验证器与服务器发送的身份验证器不匹配。有什么想法吗?
The RFC 2865 at the end has a couple of examples. Example 1, using the shared
secret "xyzzy5461"
User Telnet to Specified Host
The NAS at 192.168.1.16 sends an Access-Request UDP packet to the
RADIUS Server for a user named nemo logging in on port 3 with
password "arctangent".
The Request Authenticator is a 16 octet random number generated by
the NAS.
The User-Password is 16 octets of password padded at end with nulls,
XORed with MD5(shared secret|Request Authenticator).
01 00 00 38 0f 40 3f 94 73 97 80 57 bd 83 d5 cb
98 f4 22 7a 01 06 6e 65 6d 6f 02 12 0d be 70 8d
93 d4 13 ce 31 96 e4 3f 78 2a 0a ee 04 06 c0 a8
01 10 05 06 00 00 00 03
1 Code = Access-Request (1)
1 ID = 0
2 Length = 56
16 Request Authenticator
Attributes:
6 User-Name = "nemo"
18 User-Password
6 NAS-IP-Address = 192.168.1.16
6 NAS-Port = 3
The RADIUS server authenticates nemo, and sends an Access-Accept UDP
packet to the NAS telling it to telnet nemo to host 192.168.1.3.
The Response Authenticator is a 16-octet MD5 checksum of the code
(2), id (0), Length (38), the Request Authenticator from above, the
attributes in this reply, and the shared secret.
02 00 00 26 86 fe 22 0e 76 24 ba 2a 10 05 f6 bf
9b 55 e0 b2 06 06 00 00 00 01 0f 06 00 00 00 00
0e 06 c0 a8 01 03
1 Code = Access-Accept (2)
1 ID = 0 (same as in Access-Request)
2 Length = 38
16 Response Authenticator
Attributes:
6 Service-Type (6) = Login (1)
6 Login-Service (15) = Telnet (0)
6 Login-IP-Host (14) = 192.168.1.3
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