upstream commit

Host key rotation support.

Add a hostkeys@openssh.com protocol extension (global request) for
a server to inform a client of all its available host key after
authentication has completed. The client may record the keys in
known_hosts, allowing it to upgrade to better host key algorithms
and a server to gracefully rotate its keys.

The client side of this is controlled by a UpdateHostkeys config
option (default on).

ok markus@
9 files changed
tree: c98e66c1c0824f0b0e312d7b44d8eeac46265362
  1. .cvsignore
  2. CREDITS
  3. INSTALL
  4. LICENCE
  5. Makefile.in
  6. OVERVIEW
  7. PROTOCOL
  8. PROTOCOL.agent
  9. PROTOCOL.certkeys
  10. PROTOCOL.chacha20poly1305
  11. PROTOCOL.key
  12. PROTOCOL.krl
  13. PROTOCOL.mux
  14. README
  15. README.dns
  16. README.platform
  17. README.privsep
  18. README.tun
  19. TODO
  20. aclocal.m4
  21. addrmatch.c
  22. atomicio.c
  23. atomicio.h
  24. audit-bsm.c
  25. audit-linux.c
  26. audit.c
  27. audit.h
  28. auth-bsdauth.c
  29. auth-chall.c
  30. auth-krb5.c
  31. auth-options.c
  32. auth-options.h
  33. auth-pam.c
  34. auth-pam.h
  35. auth-passwd.c
  36. auth-rh-rsa.c
  37. auth-rhosts.c
  38. auth-rsa.c
  39. auth-shadow.c
  40. auth-sia.c
  41. auth-sia.h
  42. auth-skey.c
  43. auth.c
  44. auth.h
  45. auth1.c
  46. auth2-chall.c
  47. auth2-gss.c
  48. auth2-hostbased.c
  49. auth2-kbdint.c
  50. auth2-none.c
  51. auth2-passwd.c
  52. auth2-pubkey.c
  53. auth2.c
  54. authfd.c
  55. authfd.h
  56. authfile.c
  57. authfile.h
  58. bitmap.c
  59. bitmap.h
  60. blocks.c
  61. bufaux.c
  62. bufbn.c
  63. bufec.c
  64. buffer.c
  65. buffer.h
  66. buildpkg.sh.in
  67. canohost.c
  68. canohost.h
  69. chacha.c
  70. chacha.h
  71. channels.c
  72. channels.h
  73. cipher-3des1.c
  74. cipher-aes.c
  75. cipher-aesctr.c
  76. cipher-aesctr.h
  77. cipher-bf1.c
  78. cipher-chachapoly.c
  79. cipher-chachapoly.h
  80. cipher-ctr.c
  81. cipher.c
  82. cipher.h
  83. cleanup.c
  84. clientloop.c
  85. clientloop.h
  86. compat.c
  87. compat.h
  88. config.guess
  89. config.sub
  90. configure.ac
  91. contrib/
  92. crc32.c
  93. crc32.h
  94. crypto_api.h
  95. deattack.c
  96. deattack.h
  97. defines.h
  98. dh.c
  99. dh.h
  100. digest-libc.c
  101. digest-openssl.c
  102. digest.h
  103. dispatch.c
  104. dispatch.h
  105. dns.c
  106. dns.h
  107. ed25519.c
  108. entropy.c
  109. entropy.h
  110. fatal.c
  111. fe25519.c
  112. fe25519.h
  113. fixalgorithms
  114. fixpaths
  115. fixprogs
  116. ge25519.c
  117. ge25519.h
  118. ge25519_base.data
  119. groupaccess.c
  120. groupaccess.h
  121. gss-genr.c
  122. gss-serv-krb5.c
  123. gss-serv.c
  124. hash.c
  125. hmac.c
  126. hmac.h
  127. hostfile.c
  128. hostfile.h
  129. includes.h
  130. install-sh
  131. kex.c
  132. kex.h
  133. kexc25519.c
  134. kexc25519c.c
  135. kexc25519s.c
  136. kexdh.c
  137. kexdhc.c
  138. kexdhs.c
  139. kexecdh.c
  140. kexecdhc.c
  141. kexecdhs.c
  142. kexgex.c
  143. kexgexc.c
  144. kexgexs.c
  145. key.c
  146. key.h
  147. krl.c
  148. krl.h
  149. log.c
  150. log.h
  151. loginrec.c
  152. loginrec.h
  153. logintest.c
  154. mac.c
  155. mac.h
  156. match.c
  157. match.h
  158. md-sha256.c
  159. md5crypt.c
  160. md5crypt.h
  161. mdoc2man.awk
  162. misc.c
  163. misc.h
  164. mkinstalldirs
  165. moduli
  166. moduli.5
  167. moduli.c
  168. monitor.c
  169. monitor.h
  170. monitor_fdpass.c
  171. monitor_fdpass.h
  172. monitor_mm.c
  173. monitor_mm.h
  174. monitor_wrap.c
  175. monitor_wrap.h
  176. msg.c
  177. msg.h
  178. mux.c
  179. myproposal.h
  180. nchan.c
  181. nchan.ms
  182. nchan2.ms
  183. opacket.c
  184. opacket.h
  185. openbsd-compat/
  186. openssh.xml.in
  187. opensshd.init.in
  188. packet.c
  189. packet.h
  190. pathnames.h
  191. pkcs11.h
  192. platform.c
  193. platform.h
  194. poly1305.c
  195. poly1305.h
  196. progressmeter.c
  197. progressmeter.h
  198. readconf.c
  199. readconf.h
  200. readpass.c
  201. regress/
  202. rijndael.c
  203. rijndael.h
  204. roaming.h
  205. roaming_client.c
  206. roaming_common.c
  207. roaming_dummy.c
  208. roaming_serv.c
  209. rsa.c
  210. rsa.h
  211. sandbox-capsicum.c
  212. sandbox-darwin.c
  213. sandbox-null.c
  214. sandbox-rlimit.c
  215. sandbox-seccomp-filter.c
  216. sandbox-systrace.c
  217. sc25519.c
  218. sc25519.h
  219. scard/
  220. scp.1
  221. scp.c
  222. servconf.c
  223. servconf.h
  224. serverloop.c
  225. serverloop.h
  226. session.c
  227. session.h
  228. sftp-client.c
  229. sftp-client.h
  230. sftp-common.c
  231. sftp-common.h
  232. sftp-glob.c
  233. sftp-server-main.c
  234. sftp-server.8
  235. sftp-server.c
  236. sftp.1
  237. sftp.c
  238. sftp.h
  239. smult_curve25519_ref.c
  240. ssh-add.1
  241. ssh-add.c
  242. ssh-agent.1
  243. ssh-agent.c
  244. ssh-dss.c
  245. ssh-ecdsa.c
  246. ssh-ed25519.c
  247. ssh-gss.h
  248. ssh-keygen.1
  249. ssh-keygen.c
  250. ssh-keyscan.1
  251. ssh-keyscan.c
  252. ssh-keysign.8
  253. ssh-keysign.c
  254. ssh-pkcs11-client.c
  255. ssh-pkcs11-helper.8
  256. ssh-pkcs11-helper.c
  257. ssh-pkcs11.c
  258. ssh-pkcs11.h
  259. ssh-rsa.c
  260. ssh-sandbox.h
  261. ssh.1
  262. ssh.c
  263. ssh.h
  264. ssh1.h
  265. ssh2.h
  266. ssh_api.c
  267. ssh_api.h
  268. ssh_config
  269. ssh_config.5
  270. sshbuf-getput-basic.c
  271. sshbuf-getput-crypto.c
  272. sshbuf-misc.c
  273. sshbuf.c
  274. sshbuf.h
  275. sshconnect.c
  276. sshconnect.h
  277. sshconnect1.c
  278. sshconnect2.c
  279. sshd.8
  280. sshd.c
  281. sshd_config
  282. sshd_config.5
  283. ssherr.c
  284. ssherr.h
  285. sshkey.c
  286. sshkey.h
  287. sshlogin.c
  288. sshlogin.h
  289. sshpty.c
  290. sshpty.h
  291. sshtty.c
  292. survey.sh.in
  293. ttymodes.c
  294. ttymodes.h
  295. uidswap.c
  296. uidswap.h
  297. umac.c
  298. umac.h
  299. uuencode.c
  300. uuencode.h
  301. verify.c
  302. version.h
  303. xmalloc.c
  304. xmalloc.h