[tor-bugs] #15004 [Stem]: Hidden service descriptor parsing

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#15004: Hidden service descriptor parsing
-----------------------------+--------------------
     Reporter:  atagar       |      Owner:  atagar
         Type:  enhancement  |     Status:  new
     Priority:  major        |  Milestone:
    Component:  Stem         |    Version:
   Resolution:               |   Keywords:
Actual Points:               |  Parent ID:
       Points:               |
-----------------------------+--------------------

Comment (by donncha):

 I've fetched a HS descriptor which is encrypted with basic authentication,
 and one which is using stealth authentication:

 {{{
 # Basic Authentication
 rendezvous-service-descriptor yfmvdrkdbyquyqk5vygyeylgj2qmrvrd
 version 2
 permanent-key
 -----BEGIN RSA PUBLIC KEY-----
 MIGJAoGBANHC3bZRrlFFlSu22u18wBG57JpvIhglJE+u0ctMwTnw6iyJJqqxgU6U
 R1gnXJlorQYDC5eHoM8nbBJu7LvUjYnqINz+En+FlpZhT+eqLk0v83IB4r0Fd6Bg
 ypYLygEXUfh0bwHwYfF4mkvl6YOB6I6G5jHC46I3LH15qrdHW40FAgMBAAE=
 -----END RSA PUBLIC KEY-----
 secret-id-part fluw7z3s5cghuuirq3imh5jjj5ljips6
 publication-time 2015-02-24 20:00:00
 protocol-versions 2,3
 introduction-points
 -----BEGIN MESSAGE-----
 AQEAi3xIJz0Qv97ug9kr4U0UNN2kQhkddPHuj4op3cw+fgMLqzPlFBPAJgaEKc+g
 8xBTRKUlvfkXxocfV75GyQGi2Vqu5iN1SbI5Uliu3n8IiUina5+WaOfUs9iuHJIK
 cErgfT0bUfXKDLvW6/ncsgPdb6kb+jjT8NVhR4ZrRUf9ASfcY/f2WFNTmLgOR3Oa
 f2tMLJcAck9VbCDjKfSC6e6HgtxRFe9dX513mDviZp15UAHkjJSKxKvqRRVkL+7W
 KxJGfLY56ypZa4+afBYT/yqLzY4C47/g5TTTx9fvsdp0uQ0AmjF4LeXdZ58yNjrp
 Da63SrgQQM7lZ3k4LGXzDS20FKW2/9rpWgD78QLJGeKdHngD3ERvTX4m43rtEFrD
 oB/4l2nl6fh0507ASYHy7QQQMcdjpN0OWQQKpL9SskZ8aQw1dY4KU28Gooe9ff+B
 RGm6BlVzMi+HGcqfMpGwFfYopmqJuOXjNlX7a1jRwrztpJKeu4J9iSTiuSOEiQSq
 kUyHRLO4rWJXa2/RMWfH4XSgdUaWFjOF6kaSwmI/pRZIepi/sX8BSKm+vvOnOtlr
 Tz2DVSiA2qM+P3Br9qNTDUmTu9mri6fRzzVnj+ybdTQXn60jwPw4vj4xmvVTkjfZ
 ZB2gw2+sAmZJA5pnLNGu4N8veo1Jiz7FLE0m+7yjXbcBc/GHWGTJa0Sa1Hwfp82t
 ohagQlRYKhLaRrM6ZvjnPMH5dqT/ypfBXcIQAh6td1+e1Hf/uXZPM/ZrgHeCJqF+
 PvLDuu4TYxOod+elZE5LfwDFPzCcMA8XNuuDzGQOFOMh9o4xTbQchyRSfhDGev/H
 HpY9qxRyua+PjDCmE/F3YiFy77ITJLhCyYEdzVw43hCVY52inEauvHRzqTl7Lc53
 PhnSIW6rDWsrrSMWApCC5WRSOSKfh0u4vO13bVLTb/QmuvMEhGiXDVI3/0NEpqKF
 ewqyiG9Dvv67A3/IjTe3aMRGfWREHFnEG9bonn03uoufgmQb4h9ci9+QU52sl16F
 rxRpxLyMRp8dpUzZbK3qxtASp09Lc2pdgItWcMMTtPObcd7KVV/xkVqm3ezaUbRF
 Nw5qDFxkG85ohTvFt3wnfxkpytMhWoBv9F0ZMEFRLY2j+cb8IqXN5dyz6rGqgSYY
 dtItQvI7Lq3XnOSFy3uCGC9Vzr6PRPQIrVH/56rSRaEyM8TgVWyaQQ3xm26x9Fe2
 jUg50lG/WVzsRueBImuai1KCRC4FB/cg/kVu/s+5f5H4Z/GSD+4UpDyg3i2RYuy9
 WOA/AGEeOLY5FkOTARcWteUbi6URboaouX2lnAXK6vX6Ysn8HgE9JATVbVC/96c9
 GnWaf9yCr6Q0BvrHkS7hsJJj+VwaNPW4POSqhL+p0p+2eSWZVMlFFxNr+BNKONk+
 RAssIHF1xVRHzzl75wjzhzuq0A0crHcHb64P+glkPt4iI7SqejyCrMQh6BWia6RT
 c+NwXTnbcibB56McF+xWoyHne6dg1F0urA61JfQboyWOy+Z+cNPjEIcwWhJr/+Gx
 v7/yf3V1kNECa90L7BeUmFGKxL7SvgyapevWqkIQCZEcOnobXQRdWUmNqSoZmOxB
 u5eDcvrdF9p5wG5IStpzO9OConG3SQb46S9OSU3O7PnjKFId6KRIM7VsprMIIBTz
 HKy6ufKyMXgyxxnvE5TZQcLzA4Wv8vHWET3t3WSQEwSPx45IAbjsE587YNOkjK1X
 HNT3ypfRdJacxtttR7Y5Y/XF4tJmXkCfb5RoEqIPrQTmiLYh0h02i6CqeFK9u7j/
 yAdKY3NrCBuqPM4mWCdjvtgC9i1Q98LCDiVESRrvLlfvv3iWozDUZ3qIU4TnSgti
 U5+xKrmlKcWHHgADS56IECgCQyr2nZEhcNK7vKvg+KgA667tRm7M35w9eHz+J7lg
 x5v5GYPH4J1UjPEb5Cwl+Vlr0XIqbhMX9MZWimpOJ0l5TisOLuTJ9ennREsFPZjN
 U4IZQht7gifFlemn7D4a+UXHu95bHxDBMPJky7iYc2U3r50+JWRF+LO1L2TNDQlV
 iPO8AOoI0V0cGaYE+0ZUgpUDk8fxUH5CAPCn+dbsqDh165G6590cF9eF4/yrlf2V
 nbhZipPQyOTrmiCkBPQ1zuXYyfFHrJL7yK4ykiBV8c/VLT8nxeKfPwW3USKOScnx
 k68qqFZ6lNFxlDwPAJR3F2H+PN5JZ8H1lTE56ujgTBpArXMPYpKri4a0lG+8QnYK
 D6jOJIli5QtVQxES4X64NDwducoGHnquMZs3ScvJQPSOuTvuqaad4FrTCZGbv6Ic
 emUAHDsxjffMQ9IJYulluCTVWgS/AiBk31yiUB0GsAqZYcWz5kKgTpOXBQhulACM
 waokEqbyH2Vtvc1peiPi+Vh6EhTSiDoEVZ2w9GrOnjgpyK6zxzH0aIhJJxlQu8it
 w+xj/3+79Bf8myVesgzCWvXbkmvc6jJaoHGopV8lTM2JUn4xYCSz71Bt4wQBKZX4
 hFXDlDZaY1k/QRP/zTfQ8pjbcohDgUVW8eftJz3ND5Iy8D3nRF9/BQB3PWox4vyQ
 Fj94Eoe8NmEArIKWjUoSkn+EDgNcdHGBIaQ5is0N8r9n4E2cgMj57i4Fm37k8c6+
 hlilrggVJ8qTBGs57M0ldqRLwt1bM6SkU//oMGel7Ft3EDd98W/6RXRkmAbsLhRx
 7VMb4WCUBrIZLxo1/StwHa13RyTHAt0GKPu549l3oTZezsSad8vlurbnIbxtK9Cl
 hp6mYPd3Djoe5OaLe8Gnu23ko+S2+kfHIjOwkza9R5w6AzLjkjYS3C8oRwuxKOft
 lj/7xMZWDrfyw5H86L0QiaZnkmD+nig1+S+Rn39mmuEgl2iwZO/ihlncUJQTEULb
 7IHpmofr+5ya5xWeo/BFQhulTNr2fJN0bPkVGfp+
 -----END MESSAGE-----
 signature
 -----BEGIN SIGNATURE-----
 mhGQNtyvf5QqeFrn1SNzdp8wN5bhEH5gxZhST5t4pFxxNCv3//ZgaQ83kIzcwex9
 xzgGREFHpTrqVPXXs8nZZgMpmnhWuloAyT1c3HSCvjnbWXX9Y82wPbVV5OYx1CYb
 jLides7vbdQuS0UwEkcGMl62Ripwi0pkesgw9ZvJy+k=
 -----END SIGNATURE-----

 }}}
 {{{
 # Stealth Authentication
 rendezvous-service-descriptor ubf3xeibzlfil6s4larq6y5peup2z3oj
 version 2
 permanent-key
 -----BEGIN RSA PUBLIC KEY-----
 MIGJAoGBAL1f7GdEObH+xMhf4GsaTCtfVH7ZpanegC65jn0/Kz9wlkpF+SQdIvTu
 Ha2iZB34GDT2PvTy98chSxz+E3Kv2h45pQWbrwLN3Fj4qa+klclIXWcIa7GT4Pct
 YZzAvHIh9t9EAe6ejYu8I+h4yL6QNAA2bYOi1d66+qCNCAFBgAqpAgMBAAE=
 -----END RSA PUBLIC KEY-----
 secret-id-part jczvydhzetbpdiylj3d5nsnjvaigs7xm
 publication-time 2015-02-24 20:00:00
 protocol-versions 2,3
 introduction-points
 -----BEGIN MESSAGE-----
 AgEdbps604RR6lqeyoZBzOb6+HvlL2cDt63w8vBtyRaLirq5ZD5GDnr+R0ePj71C
 nC7qmRWuwBmzSdSd0lOTaSApBvIifbJksHUeT/rq03dpnnRHdHSVqSvig6bukcWJ
 LgJmrRd3ES13LXVHenD3C6AZMHuL9TG+MjLO2PIHu0mFO18aAHVnWY32Dmt144IY
 c2eTVZbsKobjjwCYvDf0PBZI+B6H0PZWkDX/ykYjArpLDwydeZyp+Zwj4+k0+nRr
 RPlzbHYoBY9pFYDUXDXWdL+vTsgFTG0EngLGlgUWSY5U1T1Db5HfOqc7hbqklgs/
 ULG8NUY1k41Wb+dleJI28/+ZOM9zOpHcegNx4Cn8UGbw/Yv3Tj+yki+TMeOtJyhK
 PQP8NWq8zThiVhBrfpmVjMYkNeVNyVNoxRwS6rxCQjoLWSJit2Mpf57zY1AOvT1S
 EqqFbsX+slD2Uk67imALh4pMtjX29VLIujpum3drLhoTHDszBRhIH61A2eAZqdJy
 7JkJd1x/8x7U0l8xNWhnj/bhUHdt3OrCvlN+n8x6BwmMNoLF8JIsskTuGHOaAKSQ
 WK3z0rHjgIrEjkQeuQtfmptiIgRB9LnNr+YahRnRR6XIOJGaIoVLVM2Uo2RG4MS1
 2KC3DRJ87WdMv2yNWha3w+lWt/mOALahYrvuNMU8wEuNXSi5yCo1OKirv+d5viGe
 hAgVZjRymBQF+vd30zMdOG9qXNoQFUN49JfS8z5FjWmdHRt2MHlqD2isxoeabERY
 T4Q50fFH8XHkRRomKBEbCwy/4t2DiqcTOSLGOSbTtf7qlUACp2bRth/g0ySAW8X/
 CaWVm53z1vdgF2+t6j1CnuIqf0dUygZ07HEAHgu3rMW0YTk04QkvR3jiKAKijvGH
 3YcMJz1aJ7psWSsgiwn8a8Cs4fAcLNJcdTrnyxhQI4PMST/QLfp8nPYrhKEeifTc
 vYkC4CtGuEFkWyRifIGbeD7FcjkL1zqVNu31vgo3EIVbHzylERgpgTIYBRv7aV7W
 X7XAbrrgXL0zgpI0orOyPkr2KRs6CcoEqcc2MLyB6gJ5fYAm69Ige+6gWtRT6qvZ
 tJXagfKZivLj73dRD6sUqTCX4tmgo7Q8WFSeNscDAVm/p4dVsw6SOoFcRgaH20yX
 MBa3oLNTUNAaGbScUPx2Ja3MQS0UITwk0TFTF7hL++NhTvTp6IdgQW4DG+/bVJ3M
 BRR+hsvSz5BSQQj2FUIAsJ+WoVK9ImbgsBbYxSH60jCvxTIdeh2IeUzS2T1bU9AU
 jOLzcJZmNh95Nj2Qdrc8/0gin9KpgPmuPQ6CyH3TPFy88lf19v9jHUMO4SKEr7am
 DAjbX3D7APKgHyZ61CkuoB3gylIRb8rRJD2ote38M6A1+04yJL/jG+PCL1UnMWdL
 yJ4f4LzI9c4ksnGyl9neq0IHnA0Nlky6dmgmE+vLi6OCbEEs2v132wc5PIxRY+TW
 8JWu+3wUA4tj5uQvQRqU9/lmoHG/Jxubx/HwdD9Ri17G+qX8re5sySmmq7rcZEGJ
 LVrlFuvA0NdoTM4AZY23iR6trJ/Ba2Q4pQk4SfOEMSoZJmf0UbxIP0Ez6Fb+Dxzk
 WKXfI+D0ScuVjzV0bs8iXTrCcynztRKndNbtpd39hGAR0rNqvnHyQGYV75bWm5dS
 0S0PQ6DOzicLxjNXZFicQvwfieg9VyJikWLFLu4zAbzHnuoRk6b2KbSU4UCG/BCz
 mHqz4y6GfsncsNkmFmsD5Gn9UrloWcEWgIDL05yIikL+L9DPLnNlSYtehDfxlhvh
 xHzY/Rad4Nzxe62yXhSxhROLTXIolllyOFJgqZ4hBlXybBqJH7sZUll6PUpDwZdu
 BK14pzMIpfxq2eYp8jI7fh4lU9YrkuSUM0Ewa7HfrltAgxMhHyaFjfINt61P9OlO
 s3nuBY17+KokaSWjACkCimVLH13H5DRhfX8OBRT4LeRMUspX3cyKbccwpOmoBf4y
 WPM9QXw7nQy2hwnuX6NiK5QfeCGfY64M06J2tBGcCDmjPSIcJgMcyY7jfH9yPlDt
 SKyyXpZnFOJplS2v28A/1csPSGy9kk/uGN0hfFULH4VvyAgNDYzmeOd8FvrbfHH2
 8BUTI/Tq2pckxwCYBWHcjSdXRAj5moCNSxCUMtK3kWFdxLFYzoiKuiZwq171qb5L
 yCHMwNDIWEMeC75XSMswHaBsK6ON0UUg5oedQkOK+II9L/DVyTs3UYJOsWDfM67E
 312O9/bmsoHvr+rofF7HEc74dtUAcaDGJNyNiB+O4UmWbtEpCfuLmq2vaZa9J7Y0
 hXlD2pcibC9CWpKR58cRL+dyYHZGJ4VKg6OHlJlF+JBPeLzObNDz/zQuEt9aL9Ae
 QByamqGDGcaVMVZ/A80fRoUUgHbh3bLoAmxLCvMbJ0YMtRujdtGm8ZD0WvLXQA/U
 dNmQ6tsP6pyVorWVa/Ma5CR7Em5q7M6639T8WPcu7ETTO19MnWud2lPJ5A==
 -----END MESSAGE-----
 signature
 -----BEGIN SIGNATURE-----
 c8HgXcZesCwAzgDlE3kRYsq059yCIE7MH7r2jBHqJVYPRrtm/HF/mTUykwFPzwsY
 ulcuoNlPfgGMKS8qBL4kFVZ9uR2Y6P4zLchoVS6wjL+cNYOQfeQs3sNZkiIrOjbb
 590tr1/yrt0qUtITGhUGhBZVs9gvkuqaThTIXleEseI=
 -----END SIGNATURE-----
 }}}
 Here are the keys for that hidden service:

 {{{
 # Basic Auth Hostname
 xpe5atmz5d26k26e.onion dCmx3qIvArbil8A0KM4KgQ # client: admin

 # Stealth Auth Hostname
 tosbmbgysyldansp.onion dCmx3qIvArbil8A0KM4KgR # client: admin

 # Stealth Auth Client Keys
 client-name admin
 descriptor-cookie dCmx3qIvArbil8A0KM4KgQ==
 client-key
 -----BEGIN RSA PRIVATE KEY-----
 MIICXAIBAAKBgQC9X+xnRDmx/sTIX+BrGkwrX1R+2aWp3oAuuY59Pys/cJZKRfkk
 HSL07h2tomQd+Bg09j708vfHIUsc/hNyr9oeOaUFm68CzdxY+KmvpJXJSF1nCGux
 k+D3LWGcwLxyIfbfRAHuno2LvCPoeMi+kDQANm2DotXeuvqgjQgBQYAKqQIDAQAB
 AoGAC7Mudt7XNbEI1VxfEB7qz88u+DtYKduOTdS3AfPyJxQ8pNAX6WxHaZyAhua+
 ir92N2dzUkzklA/xhRQJfY9xyUruu8aOrBW6UzZE76s2PQyClgU2jWUi3PVDjoag
 7CrKkBM3/IPq34b6IEIffp68iOFIhStjQHBUpnMlHuBzrAUCQQDyl2JtQAoOK17x
 ZePx8u/jSxnbT2b6vQQ9334KKrEagFmdfHx8uBktkjWgdM2nrX4/TUqgAke3Iz/v
 CIN82mQTAkEAx9eI7KaRyts3EQ4vNJIDxZOglVVIR09xMFhXWfqYRE2PdthqG82E
 JKAJMf9MYYd69XTqjdUud2lxMfkKeM4V0wJAUEAkH1//85AFaHX8Yh2rndVKSHKL
 7oZ40L8OQu68h7fN7Xsw81Ezgw/LDbmWDtIl4WsANM6MStkuXTTDypm0YQJBAJx9
 c4OdjF1F/IEmkmCgVsPJLt7Bwa/VzdUF2KFlUwdplQaDwdOzw97KU2kLekyFQwwj
 WelnHtPzheiUFFc1SnECQClXuBVw/mIoac6mbuw83uhLwSip3Aid8NpDgqQKNQAP
 pRDzVrFeiNNWcvTfiZyM4HvXAK2xD+XNSi8CtSu3zuQ=
 -----END RSA PRIVATE KEY-----
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15004#comment:4>
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