Test vectors for STUN
draft-ietf-behave-stun-test-vectors-00

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Abstract

This document includes test vectors for the MESSAGE-INTEGRITY and FINGERPRINT attributes of the STUN protocol.

Table of Contents

1.  Introduction
2.  Test vectors
    2.1.  Sample request
    2.2.  Sample IPv4 response
    2.3.  Sample IPv6 response
3.  Security Considerations
4.  IANA Considerations
5.  Acknowledgements
6.  Normative References
Appendix A.  Source code for test vectors

1.  Introduction

The Session Traversal Utilities for NAT (STUN)[I‑D.ietf‑behave‑rfc3489bis] (Rosenberg, J., Mahy, R., Matthews, P., and D. Wing, “Session Traversal Utilities for (NAT) (STUN),” July 2008.) protocol defines two different hashes that may be included in messages exchanged by peers implementing that protocol:

FINGERPRINT attribute:

a 32-bits Circular Redundancy Check.

MESSAGE-INTEGRITY attribute:

a HMAC-SHA1 authentication code.

This document documents sample properly-formatted STUN messages including these hashes, for the sake of testing implementations of the STUN protocol.

2.  Test vectors

All included vectors are represented as a series of hexadecimal values in network byte order. Each pair of hexadecimal digits represents one byte.

Messages follow the ICE Connectivity Checks use case of STUN, (see [I‑D.ietf‑mmusic‑ice] (Rosenberg, J., “Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) Traversal for Offer/Answer Protocols,” October 2007.)). They include both FINGERPRINT and MESSAGE-INTEGRITY attributes.

2.1.  Sample request

This request uses the following parameters:

Username:

"evtj:h6vY" (without quotes)

Password:

"VOkJxbRl1RmTxUk/WvJxBt" (without quotes)

00 01 00 44     Request type and message length
21 12 a4 42     Message cookie
b7 e7 a7 01  }
bc 34 d6 86  }  Transaction ID
fa 87 df ae  }
00 24 00 04
6e 00 01 ff
80 29 00 08
93 2f f9 b1
51 26 3b 36
00 06 00 09     USERNAME attribute header
65 76 74 6a  }
3a 68 36 76  }  Username (9 bytes) and padding (3 bytes)
59 20 20 20  }
00 08 00 14     MESSAGE-INTEGRITY attribute header
62 4e eb dc  }
3c c9 2d d8  }
4b 74 bf 85  }  HMAC-SHA1 fingerprint
d1 c0 f5 de  }
36 87 bd 33  }
80 28 00 04     FINGERPRINT attribute header
ad 8a 85 ff     CRC32 fingerprint

2.2.  Sample IPv4 response

This response used the following parameter:

Password:

"VOkJxbRl1RmTxUk/WvJxBt" (without quotes)

Mapped address:

192.0.2.1 port 32853

01 01 00 3c     Response type and message length
21 12 a4 42     Message cookie
b7 e7 a7 01  }
bc 34 d6 86  }  Transaction ID
fa 87 df ae  }
80 22 00 0b
74 65 73 74
20 76 65 63
74 6f 72 20
00 20 00 08
00 01 a1 47
e1 12 a6 43
00 08 00 14     MESSAGE-INTEGRITY attribute header
2b 91 f5 99  }
fd 9e 90 c3  }
8c 74 89 f9  }  HMAC-SHA1 fingerprint
2a f9 ba 53  }
f0 6b e7 d7  }
80 28 00 04     FINGERPRINT attribute header
c0 7d 4c 96     CRC32 fingerprint

2.3.  Sample IPv6 response

This response used the following parameter:

Password:

"VOkJxbRl1RmTxUk/WvJxBt" (without quotes)

Mapped address:

2001:db8:1234:5678:11:2233:4455:6677 port 32853

01 01 00 48     Response type and message length
21 12 a4 42     Message cookie
b7 e7 a7 01  }
bc 34 d6 86  }  Transaction ID
fa 87 df ae  }
80 22 00 0b
74 65 73 74
20 76 65 63
74 6f 72 20
00 20 00 14
00 02 a1 47
01 13 a9 fa
a5 d3 f1 79
bc 25 f4 b5
be d2 b9 d9
00 08 00 14     MESSAGE-INTEGRITY attribute header
a3 82 95 4e  }
4b e6 7b f1  }
17 84 c9 7c  }  HMAC-SHA1 fingerprint
82 92 c2 75  }
bf e3 ed 41  }
80 28 00 04     FINGERPRINT attribute header
c8 fb 0b 4c     CRC32 fingerprint

3.  Security Considerations

There are no security considerations.

4.  IANA Considerations

This document raises no IANA considerations.

5.  Acknowledgements

The author would like to thank Marc Petit-Huguenin for his comments, and Brian Korver, Alfred E. Heggestad and Gustavo García for their review.

6. Normative References

Appendix A.  Source code for test vectors

const unsigned char req[] =
  "\x00\x01\x00\x44"
  "\x21\x12\xa4\x42"
  "\xb7\xe7\xa7\x01\xbc\x34\xd6\x86\xfa\x87\xdf\xae"
  "\x00\x24\x00\x04"
    "\x6e\x00\x01\xff"
  "\x80\x29\x00\x08"
    "\x93\x2f\xf9\xb1\x51\x26\x3b\x36"
  "\x00\x06\x00\x09"
    "\x65\x76\x74\x6a\x3a\x68\x36\x76\x59\x20\x20\x20"
  "\x00\x08\x00\x14"
    "\x62\x4e\xeb\xdc\x3c\xc9\x2d\xd8\x4b\x74\xbf\x85"
    "\xd1\xc0\xf5\xde\x36\x87\xbd\x33"
  "\x80\x28\x00\x04"
    "\xad\x8a\x85\xff";

const unsigned char respv4[] =
  "\x01\x01\x00\x3c"
  "\x21\x12\xa4\x42"
  "\xb7\xe7\xa7\x01\xbc\x34\xd6\x86\xfa\x87\xdf\xae"
  "\x80\x22\x00\x0b"
    "\x74\x65\x73\x74\x20\x76\x65\x63\x74\x6f\x72\x20"
  "\x00\x20\x00\x08"
    "\x00\x01\xa1\x47\xe1\x12\xa6\x43"
  "\x00\x08\x00\x14"
    "\x2b\x91\xf5\x99\xfd\x9e\x90\xc3\x8c\x74\x89\xf9"
    "\x2a\xf9\xba\x53\xf0\x6b\xe7\xd7"
  "\x80\x28\x00\x04"
    "\xc0\x7d\x4c\x96";

const unsigned char respv6[] =
  "\x01\x01\x00\x48"
  "\x21\x12\xa4\x42"
  "\xb7\xe7\xa7\x01\xbc\x34\xd6\x86\xfa\x87\xdf\xae"
  "\x80\x22\x00\x0b"
    "\x74\x65\x73\x74\x20\x76\x65\x63\x74\x6f\x72\x20"
  "\x00\x20\x00\x14"
    "\x00\x02\xa1\x47"
    "\x01\x13\xa9\xfa\xa5\xd3\xf1\x79"
    "\xbc\x25\xf4\xb5\xbe\xd2\xb9\xd9"
  "\x00\x08\x00\x14"
    "\xa3\x82\x95\x4e\x4b\xe6\x7b\xf1\x17\x84\xc9\x7c"
    "\x82\x92\xc2\x75\xbf\xe3\xed\x41"
  "\x80\x28\x00\x04"
    "\xc8\xfb\x0b\x4c";

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