SSH Key Fingerprints for Grad and Ugrad Net Linux Computers
(Redirected from SSH Keys)
SSH Key Integrity
SSH uses cryptographic host keys to identify the hosts you log in to. You should make use of these host keys to verify the identity of our Linux clients and make sure no one is interfering with your secure connection. You can verify our host keys in one of two ways.
Verify Host Key Signatures
Our recommended approach is to use the CS department's internal certificate authority's signatures on the host keys. You do that by adding the following line to your SSH client's known_hosts file:
@cert-authority *.cs.jhu.edu ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOd3xesHEdXkh0XWE4lMNWsNpDP1mK+AoNNSplbEbNpS SSH-CA@cs.jhu.edu
On Linux systems, the known_hosts file should be in ~/.ssh/known_hosts . If the file does not exist, you can create it. Other SSH clients might store the information in a different location or a different format. Check your SSH client's documentation to find out where you need to put the above information.
Once the above line is in place, you should be able to SSH to any of our Linux clients without any prompts about system identity. Your SSH client will verify our systems' identities in the background and will silently accept data from them after verification.
Verify Host Key Fingerprints
If you cannot put the CS certificate authority information into your known_hosts file, you will need to verify each system's key fingerprint the first time you connect to it. You will have to do this separately for each different CS Linux client you use. (That's one reason we recommend the previous method over this one; the previous method is less cumbersome.)
When you connect to a system for the first time, your SSH client will indicate that it does not have any way to identify the remote system and it will show you a fingerprint for the system's host key. The precise nature of this notification will vary from one client to another, but the command line SSH client in Linux and macOS should print something like this:
The authenticity of host 'gradx.cs.jhu.edu (128.220.35.100)' can't be established. ED25519 key fingerprint is SHA256:tDsaxuPu3F+dU4Z+8cAO07bdNnoOC5wlrEbj20ouPGI. This key is not known by any other names Are you sure you want to continue connecting (yes/no/[fingerprint])?
In this example, the remote system is named gradx.cs.jhu.edu. The remote system (gradx) has an ED25519 host key. That key has a fingerprint of SHA256:tDsaxuPu3F+dU4Z+8cAO07bdNnoOC5wlrEbj20ouPGI, calculated with the SHA256 hash algorithm.
You should look up the fingerprint in the tables below. If the fingerprint shown by your SSH client matches the one on this page (for the given system, key type, and hash algorithm), you can tell your client to accept the key. Your client should save the host key for future reference and you won't be asked about the identity of this particular system again.
NOTE: If the fingerprint does not match, you should not try to connect. You can email support@cs.jhu.edu to let us know, but there may not be a lot we will be able to do at our end to assist you, aside from perhaps offering some general advice. There are many possible reasons for a key mismatch, we will generally not be able to tell which one applies in your case, the problems are usually outside of our control, and the source of the problem is likely to be either on your computer or somewhere in the network between your computer and ours.
Tip: Note how the SSH client in the example above asks, "Are you sure you want to continue connecting (yes/no/[fingerprint])?". If you type "yes", it will connect (and remember the host key for later). If you type "no", it will not connect. But you can also copy and paste the key fingerprint on this page into the client's prompt. If you do that, the client will verify the fingerprint itself and only proceed if it matches. That can be easier than checking all of the parts of the fingerprint yourself. You have to use the fingerprint that matches the key type and the hash algorithm, and you have to include the hash prefix for the fingerprint. So pasting "SHA256:tDsaxuPu3F+dU4Z+8cAO07bdNnoOC5wlrEbj20ouPGI" into the above prompt would be the same as typing "yes". Not all SSH clients have a feature like this, but it can be convenient if yours does.
SSH Fingerprints for Grad Net Clients
| Hostname | Key Type | Hash Format | Fingerprint |
|---|---|---|---|
| gradx.cs.jhu.edu | ED25519 | SHA256 | SHA256:tDsaxuPu3F+dU4Z+8cAO07bdNnoOC5wlrEbj20ouPGI
|
| MD5 | MD5:c4:c1:0b:13:85:15:00:11:d4:8a:e2:e5:af:88:db:f8
| ||
| Bubblebabble | xusir-mebef-latek-bekyg-lodoh-vilid-lobof-lypor-zasat-mitog-dixux
| ||
| RSA | SHA256 | SHA256:daF2DD8uuga/56YU/wVX4C02O8nr9MP8j8Hv4kLQNr4
| |
| MD5 | MD5:ed:51:a9:09:b6:58:a5:f0:f5:1e:1b:4e:7b:4f:69:a1
| ||
| Bubblebabble | xipec-kepes-bofog-hicis-bydul-rytus-kadus-gukal-gyveg-vekyk-nyxox
| ||
| gradz.cs.jhu.edu | ED25519 | SHA256 | SHA256:PEAbMttKp5mmG3b8U3dcG3x7X8NXwS/SA5KWHlUl0FY
|
| MD5 | MD5:a8:49:8a:62:33:8f:95:f5:f8:95:16:5e:f5:dd:35:8a
| ||
| Bubblebabble | xopob-kykub-hylim-binib-butyv-filep-fumug-kydaz-pemag-dezys-fyxax
| ||
| RSA | SHA256 | SHA256:2hjl68rZkDcInOfA67/2vQjJxC73sPKl4KIdovhqvIU
| |
| MD5 | MD5:26:95:18:d5:34:42:61:00:b5:38:f5:de:9e:d7:e0:20
| ||
| Bubblebabble | xopah-gegik-nivip-guhes-syzoh-faruk-rapys-kulak-kaved-luhel-hyxux
| ||
| masters1.cs.jhu.edu | ED25519 | SHA256 | SHA256:X/p5dYJLcz+sHtT6ImDkI2QM00ymNZ88vpbM90MNL10
|
| MD5 | MD5:88:c6:f2:74:86:98:f4:b9:b9:96:2d:1d:0e:ea:77:db
| ||
| Bubblebabble | xinod-busik-tufyf-rosac-romis-gunaz-fazum-fivuz-tugal-gunul-zoxax
| ||
| RSA | SHA256 | SHA256:vdVYkjGyCt1Cy9fYz4AiX7ysi9MxdZNbM+2666zlol4
| |
| MD5 | MD5:c2:31:e3:25:af:6b:0b:57:5e:81:ca:8d:15:4f:54:2d
| ||
| Bubblebabble | xofom-nyvat-lisic-govyz-memud-gulif-rynur-tages-dodos-velal-lyxox
| ||
| masters2.cs.jhu.edu | ED25519 | SHA256 | SHA256:WxXh1MLScgYgPj0dY5rhB0zP8nh69mVbuh0OU3oNKoY
|
| MD5 | MD5:0c:5a:cf:78:2d:bc:51:4a:f4:0c:44:c6:0b:8e:9a:c7
| ||
| Bubblebabble | xonoz-synyz-fymon-myvyr-muzum-dilif-gukov-gebac-dapur-lihuf-pyxax
| ||
| RSA | SHA256 | SHA256:WeZopUF01D4+5Hk0gpu5lLx/Xc9BQ7b2gU0Hir320r0
| |
| MD5 | MD5:35:4f:5e:15:ac:43:ab:2e:69:15:e6:e6:9a:99:3d:ea
| ||
| Bubblebabble | xegih-pakov-migip-pesyp-cebak-cecon-vazov-bahog-cyvym-casos-lyxux
| ||
| masters3.cs.jhu.edu | ED25519 | SHA256 | SHA256:9uF/jL2PMw42SMmNz20Dze/3YoL+22dW/U5TVBj+7/Y
|
| MD5 | MD5:e8:d0:e8:5d:7a:ac:6e:f7:54:81:00:9c:06:d2:a0:cf
| ||
| Bubblebabble | xeret-nocyl-fyzag-futul-lovig-rirud-pekah-sukyr-gavac-mymyh-buxyx
| ||
| RSA | SHA256 | SHA256:GJzmDgZgG1K+Br+q3eSlOfg1bjjJdnblrhOsRYwKD64
| |
| MD5 | MD5:84:09:95:71:a5:f8:60:9e:13:f6:b7:3e:34:49:f6:bb
| ||
| Bubblebabble | xosol-vemyl-sekym-vimut-mofit-hisyt-vival-votoc-cotic-nunas-raxex
| ||
| masters4.cs.jhu.edu | ED25519 | SHA256 | SHA256:Jh0kVv0GnUgqwDO9MR2bxtMMefX0zdGNhRpp3aSiPHA
|
| MD5 | MD5:b3:1c:7c:3a:8b:ba:4c:77:b9:3f:dc:7b:fe:98:4f:18
| ||
| Bubblebabble | xuram-vaveb-dapyp-cefog-kyboh-gabym-tomas-gabug-mofur-mofil-vaxax
| ||
| RSA | SHA256 | SHA256:h8eDx2v8/P70kuxXQ7ubQkQ+CXUKlgoS15WHIpX7i1M
| |
| MD5 | MD5:05:6e:72:94:13:3f:6e:b6:92:86:35:e5:57:f3:66:ca
| ||
| Bubblebabble | xutat-zeber-nutav-guguz-fihuh-gucul-rosiz-subif-filul-ropag-zyxix
|
SSH Fingerprints for Ugrad Net Clients
| Hostname | Key Type | Hash Format | Fingerprint |
|---|---|---|---|
| ugradx.cs.jhu.edu | ED25519 | SHA256 | SHA256:IjfRPzfeCGJLUVNFXeE5Tg0SRc/0JXdKxzQX+LN4SZg
|
| MD5 | MD5:11:d6:4e:ba:67:a6:ed:56:56:2e:cc:5a:d3:f4:65:57
| ||
| Bubblebabble | xovaz-rylif-ryvis-rosor-fulaf-mupez-hever-naleb-sybys-tyfek-gaxux
| ||
| RSA | SHA256 | SHA256:wx9PPRBKec5+Akd5bd7mt2CNDoxPlLoX5HUkT4H7IJA
| |
| MD5 | MD5:df:3e:b8:d9:4e:7b:41:da:68:12:ca:7b:32:d5:a2:a9
| ||
| Bubblebabble | xoliv-miret-mubih-hotym-sugav-vugeh-dolef-gapav-vifyd-zutyf-mexux
| ||
| ugradz.cs.jhu.edu | ED25519 | SHA256 | SHA256:abEthx/Nju06M40eHIadrgFeR7LMzs6O65Jv/FHCHnU
|
| MD5 | MD5:fe:10:60:0c:6e:01:64:ad:3b:89:11:b5:d3:e5:83:5b
| ||
| Bubblebabble | xucan-mevur-gizul-cufab-vohuc-dafup-nocev-talol-mimur-ponem-suxax
| ||
| RSA | SHA256 | SHA256:hxeXz+LUUxqBSpBg5xMxmYWafvLNGJfyGBecyaldBKE
| |
| MD5 | MD5:eb:d5:36:a0:50:77:41:78:8d:a9:c8:5d:1b:a5:a6:49
| ||
| Bubblebabble | xodet-kudud-rupil-hupys-morob-rodaz-relen-panib-vocug-zoner-guxyx
| ||
| ugrad1.cs.jhu.edu | ED25519 | SHA256 | SHA256:SlFQQ/pkx7NREJrQ1r4dK4spsCM7F4TD1BUImLrWlfA
|
| MD5 | MD5:f3:da:16:56:be:b3:c8:70:f1:77:ae:de:a2:14:ca:4e
| ||
| Bubblebabble | xosad-dicic-ledis-dirup-norom-vidiv-tudav-pygit-gyhut-limud-goxox
| ||
| RSA | SHA256 | SHA256:E7Auuf38b3l6xDtwt2mAbxEm1nmsvKw+a5HmVt66sB8
| |
| MD5 | MD5:62:b6:52:df:b0:16:de:59:07:2f:92:ba:87:87:61:ef
| ||
| Bubblebabble | xodec-cydiv-fucib-mikat-didiz-kalat-rabor-mydul-civob-lyvuk-hoxix
| ||
| ugrad2.cs.jhu.edu | ED25519 | SHA256 | SHA256:yxHMXHJ4HM0uh7zoOLnPESDptY+S5OLhhUY7R/gq6YM
|
| MD5 | MD5:f9:87:cb:35:fb:3f:4c:fc:03:86:b0:d9:cc:cb:39:c5
| ||
| Bubblebabble | xedat-notes-kuzeb-begur-lopom-nehis-vafih-pyrib-hagep-rekiz-vixyx
| ||
| RSA | SHA256 | SHA256:g2GutvwDsjVCP8E1jrN7e8heQvtWyxy+zLpUWwn2UVg
| |
| MD5 | MD5:f7:c4:1f:76:ee:c5:a1:8d:ba:c8:c8:a4:d5:96:a1:67
| ||
| Bubblebabble | xegol-tacic-cosyl-seryc-nufyk-hibov-vizob-rumoz-sifiv-gotap-noxox
| ||
| ugrad3.cs.jhu.edu | ED25519 | SHA256 | SHA256:lLY6i/2lxTAh9/6ckjWGL386m2T1u5DH33kDZ4/nyr0
|
| MD5 | MD5:90:3d:c2:bc:b9:78:4c:23:71:57:26:b1:ec:b3:50:b9
| ||
| Bubblebabble | xubah-fyner-muzek-cudid-syryk-motas-rytav-giged-hihel-lakyn-vyxex
| ||
| RSA | SHA256 | SHA256:/lAUNYp/0QsbhqSraZnt1Gl5eqsc9wbseJDkz6XeAo8
| |
| MD5 | MD5:ee:31:f7:3b:df:38:9b:b5:5e:9b:84:21:16:51:a0:cb
| ||
| Bubblebabble | xemer-povus-semyr-pacit-zogek-nifuz-tinit-sitab-cufyz-demyb-fuxix
| ||
| ugrad4.cs.jhu.edu | ED25519 | SHA256 | SHA256:/AjKjwxJRIx0YV74yL7RTOGAY/Xremw12D/LbojEEhs
|
| MD5 | MD5:93:d0:26:74:44:e2:c7:7e:10:eb:c0:79:2d:a8:da:a1
| ||
| Bubblebabble | xucib-zyzef-ravap-vegek-rucyk-cegot-vilyt-bisot-zahin-rybuc-hexox
| ||
| RSA | SHA256 | SHA256:H4TtRSfWbL81IGHFJImgee3/qG53iebUXMbsYVGQugk
| |
| MD5 | MD5:1f:e1:ce:a1:e5:24:75:1b:9d:86:32:0e:d5:6f:fb:59
| ||
| Bubblebabble | xihis-bucip-kylis-dulok-nycak-lyzoc-ryrit-tagys-fygep-nadud-daxux
| ||
| ugrad5.cs.jhu.edu | ED25519 | SHA256 | SHA256:VC7r9Lg2Xfht+w5vhD+8SVK/JOrwk5v21VtTxTx1Qso
|
| MD5 | MD5:3d:95:29:d0:e3:2d:fa:ce:24:b8:4d:df:81:db:16:9b
| ||
| Bubblebabble | xelef-tapin-tefab-cycos-nitat-papok-cokab-sulos-hazyr-hifub-buxyx
| ||
| RSA | SHA256 | SHA256:dp/4nv+6+NvOfmOW1cmiKixL9r8CHLOuq8seTUR/TqA
| |
| MD5 | MD5:9b:83:56:34:2d:9f:af:77:af:76:98:bf:2b:45:34:b7
| ||
| Bubblebabble | xubiz-tihif-zicuk-sogod-nokel-bacyc-fyhig-kicyb-buzos-cavud-soxyx
| ||
| ugrad6.cs.jhu.edu | ED25519 | SHA256 | SHA256:X0iChR7ejVgmwAS0EyWCigUxFUBrAKl1FD5o1PrU2bQ
|
| MD5 | MD5:e8:7e:22:8f:e2:0f:8f:f0:d9:f2:ba:b1:43:f7:ba:92
| ||
| Bubblebabble | ximod-picur-resig-puvic-rovyb-rytyg-nipah-nygap-nasug-mucas-dyxox
| ||
| RSA | SHA256 | SHA256:30ujTjS4voP4VOgRDYrd7LLNtzoNeQHXjFkE1YXBjCk
| |
| MD5 | MD5:6d:73:02:f5:61:4e:0b:0d:fe:55:14:ba:af:51:74:71
| ||
| Bubblebabble | xekor-goryb-padus-titaf-cymoc-nylyl-nanat-nofad-dopah-bukyk-fyxux
| ||
| ugrad7.cs.jhu.edu | ED25519 | SHA256 | SHA256:GgVdcTq4vFHMAzXuhNxLlm43Gi9YZPvKJ1uouECaAtw
|
| MD5 | MD5:96:a4:40:af:fa:a1:81:97:63:3a:07:0c:bd:bd:2d:39
| ||
| Bubblebabble | xebep-fimek-modim-penef-kirog-godes-gipym-pupiv-sorym-hycig-laxyx
| ||
| RSA | SHA256 | SHA256:ZNEjJdfPAA+KxDyniYS19jxHTl0Ed97nEJxvhTmSUig
| |
| MD5 | MD5:15:b3:e3:a5:a9:9c:03:df:95:28:52:4b:33:26:da:73
| ||
| Bubblebabble | xuhek-sytag-giget-bykis-lerur-deses-demup-nusag-lemyh-zimel-hyxyx
| ||
| ugrad8.cs.jhu.edu | ED25519 | SHA256 | SHA256:pTrG8qlZuu16MVWOQCGjgNIgnAI442GbQKsT1oqk3y8
|
| MD5 | MD5:05:bb:63:13:43:85:18:66:f4:7a:ca:19:c2:91:ac:08
| ||
| Bubblebabble | xivet-gohot-ripuc-vamod-lynul-nyroz-givug-simeh-tykub-bafam-hexex
| ||
| RSA | SHA256 | SHA256:/iMbR0wL4r52rL5/ty8WakqmhKYZLdjNflVAuimsrF8
| |
| MD5 | MD5:70:bd:e7:2d:55:6b:2e:e4:38:9f:0a:c1:06:1d:53:70
| ||
| Bubblebabble | xufaf-donin-comon-gabid-nihyg-firor-fypad-muvuv-lugyz-ketam-cyxax
| ||
| ugrad9.cs.jhu.edu | ED25519 | SHA256 | SHA256:GvTxUpnxiPBenX7Emtdx9SKIz6R0bKMJEH8JzPjilXE
|
| MD5 | MD5:78:88:71:2f:4a:85:10:0c:7e:e2:d8:56:3f:0e:88:f4
| ||
| Bubblebabble | xilik-zogav-rokez-dibuv-galer-hekad-lotat-damab-betup-fydip-sixux
| ||
| RSA | SHA256 | SHA256:SAd53/9mbwCtcJFyS8nh3ghxiF83n/w49mdjz6I/j9s
| |
| MD5 | MD5:1a:a7:0c:4f:32:05:0f:5c:a2:f4:e3:5a:7b:0e:b5:c0
| ||
| Bubblebabble | xupil-hymyv-dutus-fagaz-subif-litoc-vynep-kymek-kacyr-hagup-suxyx
| ||
| ugrad10.cs.jhu.edu | ED25519 | SHA256 | SHA256:/EIk83XaAHaIGjJXmEEpS3pmXmDQTR7ZcixVPJmYAY8
|
| MD5 | MD5:02:38:81:46:a3:f0:24:69:6b:1f:4e:87:05:9f:86:cc
| ||
| Bubblebabble | xizol-vivoz-lazar-colyk-lopuc-kafek-tocyz-kitek-cecob-syhut-byxex
| ||
| RSA | SHA256 | SHA256:PLV09yifvRtXjXdnWLrrMBjvB92RlfGssECia4O8pzA
| |
| MD5 | MD5:2a:28:be:e8:c3:54:4b:0b:e7:a9:49:86:94:58:ec:5c
| ||
| Bubblebabble | xelaz-pizor-vocez-fanyc-zafep-cebor-hebut-kimyn-mugeg-locek-zyxix
| ||
| ugrad11.cs.jhu.edu | ED25519 | SHA256 | SHA256:XYZKHCdt3nQALm9n/KzL95JxHZCz+Sp0+TzSuXlI99I
|
| MD5 | MD5:04:28:e8:c8:2f:03:2b:a8:7f:64:53:25:a3:97:24:38
| ||
| Bubblebabble | xepan-zezom-tivev-dosed-kozaz-romof-zyvit-tifyc-kyguf-nufog-guxex
| ||
| RSA | SHA256 | SHA256:qQdX8zUkFNNS9cADi0i1dFDkKpHn9hDawEDIWjFSrgc
| |
| MD5 | MD5:cd:2e:ef:38:a8:23:2d:46:9c:17:a2:b8:61:1e:be:52
| ||
| Bubblebabble | xezep-hybur-vumod-zikob-kunib-fetul-huryp-vofag-mivyz-sypas-roxux
| ||
| ugrad12.cs.jhu.edu | ED25519 | SHA256 | SHA256:B/1NhbJQ+37nGVHMcRZVXGE98ISMzgyOmgiaBb3C68E
|
| MD5 | MD5:81:89:16:40:69:0f:bd:ae:52:9f:c4:81:2f:3a:4d:9d
| ||
| Bubblebabble | xoren-mofad-mebet-lupah-zikyd-pazys-fuvyc-nakaz-lokod-fosan-pixux
| ||
| RSA | SHA256 | SHA256:WMBYxhPp4CahZmcvAZ7HTUHCgc7lVj4f3nfOOoe5jZE
| |
| MD5 | MD5:c6:ca:7f:c1:86:18:cc:4b:db:61:e1:18:3f:f6:0d:b1
| ||
| Bubblebabble | xosid-sifis-nesuh-gigir-hyhah-hylag-vazas-mukak-ludiv-fohyv-rixix
|