Damien Miller | 37876e9 | 2003-05-15 10:19:46 +1000 | [diff] [blame] | 1 | .\" $OpenBSD: ssh-keygen.1,v 1.57 2003/05/14 18:16:20 jakob Exp $ |
Ben Lindstrom | 36579d3 | 2001-01-29 07:39:26 +0000 | [diff] [blame] | 2 | .\" |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 3 | .\" -*- nroff -*- |
| 4 | .\" |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 5 | .\" Author: Tatu Ylonen <ylo@cs.hut.fi> |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 6 | .\" Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
| 7 | .\" All rights reserved |
| 8 | .\" |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 9 | .\" As far as I am concerned, the code I have written for this software |
| 10 | .\" can be used freely for any purpose. Any derived versions of this |
| 11 | .\" software must be clearly marked as such, and if the derived work is |
| 12 | .\" incompatible with the protocol description in the RFC file, it must be |
| 13 | .\" called by a name other than "ssh" or "Secure Shell". |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 14 | .\" |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 15 | .\" |
Ben Lindstrom | 92a2e38 | 2001-03-05 06:59:27 +0000 | [diff] [blame] | 16 | .\" Copyright (c) 1999,2000 Markus Friedl. All rights reserved. |
| 17 | .\" Copyright (c) 1999 Aaron Campbell. All rights reserved. |
| 18 | .\" Copyright (c) 1999 Theo de Raadt. All rights reserved. |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 19 | .\" |
| 20 | .\" Redistribution and use in source and binary forms, with or without |
| 21 | .\" modification, are permitted provided that the following conditions |
| 22 | .\" are met: |
| 23 | .\" 1. Redistributions of source code must retain the above copyright |
| 24 | .\" notice, this list of conditions and the following disclaimer. |
| 25 | .\" 2. Redistributions in binary form must reproduce the above copyright |
| 26 | .\" notice, this list of conditions and the following disclaimer in the |
| 27 | .\" documentation and/or other materials provided with the distribution. |
| 28 | .\" |
| 29 | .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 30 | .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 31 | .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 32 | .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 33 | .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 34 | .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 35 | .\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 36 | .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 37 | .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 38 | .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 39 | .\" |
| 40 | .Dd September 25, 1999 |
| 41 | .Dt SSH-KEYGEN 1 |
| 42 | .Os |
| 43 | .Sh NAME |
| 44 | .Nm ssh-keygen |
Ben Lindstrom | 5a70782 | 2001-04-22 17:15:46 +0000 | [diff] [blame] | 45 | .Nd authentication key generation, management and conversion |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 46 | .Sh SYNOPSIS |
| 47 | .Nm ssh-keygen |
Damien Miller | 495dca3 | 2003-04-01 21:42:14 +1000 | [diff] [blame] | 48 | .Bk -words |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 49 | .Op Fl q |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 50 | .Op Fl b Ar bits |
Damien Miller | 55fafa0 | 2002-02-19 15:22:07 +1100 | [diff] [blame] | 51 | .Fl t Ar type |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 52 | .Op Fl N Ar new_passphrase |
| 53 | .Op Fl C Ar comment |
Damien Miller | 1a425f3 | 2000-09-02 10:08:09 +1100 | [diff] [blame] | 54 | .Op Fl f Ar output_keyfile |
Damien Miller | 495dca3 | 2003-04-01 21:42:14 +1000 | [diff] [blame] | 55 | .Ek |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 56 | .Nm ssh-keygen |
| 57 | .Fl p |
| 58 | .Op Fl P Ar old_passphrase |
| 59 | .Op Fl N Ar new_passphrase |
Damien Miller | 10f6f6b | 1999-11-17 17:29:08 +1100 | [diff] [blame] | 60 | .Op Fl f Ar keyfile |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 61 | .Nm ssh-keygen |
Ben Lindstrom | 5a70782 | 2001-04-22 17:15:46 +0000 | [diff] [blame] | 62 | .Fl i |
Damien Miller | 1a425f3 | 2000-09-02 10:08:09 +1100 | [diff] [blame] | 63 | .Op Fl f Ar input_keyfile |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 64 | .Nm ssh-keygen |
Ben Lindstrom | 5a70782 | 2001-04-22 17:15:46 +0000 | [diff] [blame] | 65 | .Fl e |
Damien Miller | 1a425f3 | 2000-09-02 10:08:09 +1100 | [diff] [blame] | 66 | .Op Fl f Ar input_keyfile |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 67 | .Nm ssh-keygen |
| 68 | .Fl y |
Damien Miller | 1a425f3 | 2000-09-02 10:08:09 +1100 | [diff] [blame] | 69 | .Op Fl f Ar input_keyfile |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 70 | .Nm ssh-keygen |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 71 | .Fl c |
| 72 | .Op Fl P Ar passphrase |
| 73 | .Op Fl C Ar comment |
Damien Miller | 10f6f6b | 1999-11-17 17:29:08 +1100 | [diff] [blame] | 74 | .Op Fl f Ar keyfile |
| 75 | .Nm ssh-keygen |
| 76 | .Fl l |
Ben Lindstrom | 8fd372b | 2001-03-12 03:02:17 +0000 | [diff] [blame] | 77 | .Op Fl f Ar input_keyfile |
| 78 | .Nm ssh-keygen |
| 79 | .Fl B |
Damien Miller | 1a425f3 | 2000-09-02 10:08:09 +1100 | [diff] [blame] | 80 | .Op Fl f Ar input_keyfile |
Ben Lindstrom | a1ec4a9 | 2001-08-06 21:51:34 +0000 | [diff] [blame] | 81 | .Nm ssh-keygen |
| 82 | .Fl D Ar reader |
| 83 | .Nm ssh-keygen |
| 84 | .Fl U Ar reader |
| 85 | .Op Fl f Ar input_keyfile |
Damien Miller | 37876e9 | 2003-05-15 10:19:46 +1000 | [diff] [blame] | 86 | .Nm ssh-keygen |
| 87 | .Fl r Ar hostname |
| 88 | .Op Fl f Ar input_keyfile |
| 89 | .Op Fl g |
Damien Miller | 22c7726 | 2000-04-13 12:26:34 +1000 | [diff] [blame] | 90 | .Sh DESCRIPTION |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 91 | .Nm |
Ben Lindstrom | 5a70782 | 2001-04-22 17:15:46 +0000 | [diff] [blame] | 92 | generates, manages and converts authentication keys for |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 93 | .Xr ssh 1 . |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 94 | .Nm |
Ben Lindstrom | cb72e4f | 2002-06-21 00:41:51 +0000 | [diff] [blame] | 95 | can create RSA keys for use by SSH protocol version 1 and RSA or DSA |
Damien Miller | a41c8b1 | 2002-01-22 23:05:08 +1100 | [diff] [blame] | 96 | keys for use by SSH protocol version 2. The type of key to be generated |
| 97 | is specified with the |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 98 | .Fl t |
Damien Miller | a41c8b1 | 2002-01-22 23:05:08 +1100 | [diff] [blame] | 99 | option. |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 100 | .Pp |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 101 | Normally each user wishing to use SSH |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 102 | with RSA or DSA authentication runs this once to create the authentication |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 103 | key in |
Ben Lindstrom | 18a82ac | 2001-04-11 15:59:35 +0000 | [diff] [blame] | 104 | .Pa $HOME/.ssh/identity , |
| 105 | .Pa $HOME/.ssh/id_dsa |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 106 | or |
Ben Lindstrom | 18a82ac | 2001-04-11 15:59:35 +0000 | [diff] [blame] | 107 | .Pa $HOME/.ssh/id_rsa . |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 108 | Additionally, the system administrator may use this to generate host keys, |
| 109 | as seen in |
| 110 | .Pa /etc/rc . |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 111 | .Pp |
| 112 | Normally this program generates the key and asks for a file in which |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 113 | to store the private key. |
| 114 | The public key is stored in a file with the same name but |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 115 | .Dq .pub |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 116 | appended. |
| 117 | The program also asks for a passphrase. |
| 118 | The passphrase may be empty to indicate no passphrase |
Ben Lindstrom | bf555ba | 2001-01-18 02:04:35 +0000 | [diff] [blame] | 119 | (host keys must have an empty passphrase), or it may be a string of |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 120 | arbitrary length. |
Ben Lindstrom | 4e366d5 | 2001-12-06 16:43:21 +0000 | [diff] [blame] | 121 | A passphrase is similar to a password, except it can be a phrase with a |
| 122 | series of words, punctuation, numbers, whitespace, or any string of |
| 123 | characters you want. |
| 124 | Good passphrases are 10-30 characters long, are |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 125 | not simple sentences or otherwise easily guessable (English |
Ben Lindstrom | 2a097a4 | 2001-06-09 01:13:40 +0000 | [diff] [blame] | 126 | prose has only 1-2 bits of entropy per character, and provides very bad |
Ben Lindstrom | 4e366d5 | 2001-12-06 16:43:21 +0000 | [diff] [blame] | 127 | passphrases), and contain a mix of upper and lowercase letters, |
| 128 | numbers, and non-alphanumeric characters. |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 129 | The passphrase can be changed later by using the |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 130 | .Fl p |
| 131 | option. |
| 132 | .Pp |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 133 | There is no way to recover a lost passphrase. |
| 134 | If the passphrase is |
Ben Lindstrom | 594e203 | 2001-09-12 18:35:30 +0000 | [diff] [blame] | 135 | lost or forgotten, a new key must be generated and copied to the |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 136 | corresponding public key to other machines. |
| 137 | .Pp |
Ben Lindstrom | 5a70782 | 2001-04-22 17:15:46 +0000 | [diff] [blame] | 138 | For RSA1 keys, |
| 139 | there is also a comment field in the key file that is only for |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 140 | convenience to the user to help identify the key. |
| 141 | The comment can tell what the key is for, or whatever is useful. |
| 142 | The comment is initialized to |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 143 | .Dq user@host |
| 144 | when the key is created, but can be changed using the |
| 145 | .Fl c |
| 146 | option. |
| 147 | .Pp |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 148 | After a key is generated, instructions below detail where the keys |
| 149 | should be placed to be activated. |
| 150 | .Pp |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 151 | The options are as follows: |
| 152 | .Bl -tag -width Ds |
| 153 | .It Fl b Ar bits |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 154 | Specifies the number of bits in the key to create. |
| 155 | Minimum is 512 bits. |
Ben Lindstrom | 9394d2f | 2002-12-23 02:11:54 +0000 | [diff] [blame] | 156 | Generally, 1024 bits is considered sufficient. |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 157 | The default is 1024 bits. |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 158 | .It Fl c |
| 159 | Requests changing the comment in the private and public key files. |
Damien Miller | eb5fec6 | 2001-11-12 10:52:44 +1100 | [diff] [blame] | 160 | This operation is only supported for RSA1 keys. |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 161 | The program will prompt for the file containing the private keys, for |
Ben Lindstrom | aafff9c | 2001-05-06 03:01:02 +0000 | [diff] [blame] | 162 | the passphrase if the key has one, and for the new comment. |
Ben Lindstrom | 5a70782 | 2001-04-22 17:15:46 +0000 | [diff] [blame] | 163 | .It Fl e |
Ben Lindstrom | 46c264f | 2001-04-24 16:56:58 +0000 | [diff] [blame] | 164 | This option will read a private or public OpenSSH key file and |
| 165 | print the key in a |
Ben Lindstrom | 5a70782 | 2001-04-22 17:15:46 +0000 | [diff] [blame] | 166 | .Sq SECSH Public Key File Format |
| 167 | to stdout. |
| 168 | This option allows exporting keys for use by several commercial |
| 169 | SSH implementations. |
Damien Miller | 37876e9 | 2003-05-15 10:19:46 +1000 | [diff] [blame] | 170 | .It Fl g |
| 171 | Use generic DNS resource record format. |
Ben Lindstrom | a1ec4a9 | 2001-08-06 21:51:34 +0000 | [diff] [blame] | 172 | .It Fl f Ar filename |
Damien Miller | 10f6f6b | 1999-11-17 17:29:08 +1100 | [diff] [blame] | 173 | Specifies the filename of the key file. |
Ben Lindstrom | 5a70782 | 2001-04-22 17:15:46 +0000 | [diff] [blame] | 174 | .It Fl i |
| 175 | This option will read an unencrypted private (or public) key file |
| 176 | in SSH2-compatible format and print an OpenSSH compatible private |
| 177 | (or public) key to stdout. |
| 178 | .Nm |
Ben Lindstrom | 2857d9c | 2001-04-22 17:19:46 +0000 | [diff] [blame] | 179 | also reads the |
Ben Lindstrom | 5a70782 | 2001-04-22 17:15:46 +0000 | [diff] [blame] | 180 | .Sq SECSH Public Key File Format . |
| 181 | This option allows importing keys from several commercial |
| 182 | SSH implementations. |
Damien Miller | 10f6f6b | 1999-11-17 17:29:08 +1100 | [diff] [blame] | 183 | .It Fl l |
Damien Miller | eb5fec6 | 2001-11-12 10:52:44 +1100 | [diff] [blame] | 184 | Show fingerprint of specified public key file. |
| 185 | Private RSA1 keys are also supported. |
| 186 | For RSA and DSA keys |
| 187 | .Nm |
| 188 | tries to find the matching public key file and prints its fingerprint. |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 189 | .It Fl p |
| 190 | Requests changing the passphrase of a private key file instead of |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 191 | creating a new private key. |
| 192 | The program will prompt for the file |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 193 | containing the private key, for the old passphrase, and twice for the |
| 194 | new passphrase. |
| 195 | .It Fl q |
| 196 | Silence |
| 197 | .Nm ssh-keygen . |
| 198 | Used by |
| 199 | .Pa /etc/rc |
| 200 | when creating a new key. |
Ben Lindstrom | 5a70782 | 2001-04-22 17:15:46 +0000 | [diff] [blame] | 201 | .It Fl y |
| 202 | This option will read a private |
| 203 | OpenSSH format file and print an OpenSSH public key to stdout. |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 204 | .It Fl t Ar type |
| 205 | Specifies the type of the key to create. |
| 206 | The possible values are |
| 207 | .Dq rsa1 |
| 208 | for protocol version 1 and |
| 209 | .Dq rsa |
| 210 | or |
| 211 | .Dq dsa |
| 212 | for protocol version 2. |
Ben Lindstrom | 8fd372b | 2001-03-12 03:02:17 +0000 | [diff] [blame] | 213 | .It Fl B |
| 214 | Show the bubblebabble digest of specified private or public key file. |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 215 | .It Fl C Ar comment |
| 216 | Provides the new comment. |
Ben Lindstrom | a1ec4a9 | 2001-08-06 21:51:34 +0000 | [diff] [blame] | 217 | .It Fl D Ar reader |
| 218 | Download the RSA public key stored in the smartcard in |
| 219 | .Ar reader . |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 220 | .It Fl N Ar new_passphrase |
| 221 | Provides the new passphrase. |
| 222 | .It Fl P Ar passphrase |
| 223 | Provides the (old) passphrase. |
Ben Lindstrom | a1ec4a9 | 2001-08-06 21:51:34 +0000 | [diff] [blame] | 224 | .It Fl U Ar reader |
| 225 | Upload an existing RSA private key into the smartcard in |
| 226 | .Ar reader . |
Damien Miller | 37876e9 | 2003-05-15 10:19:46 +1000 | [diff] [blame] | 227 | .It Fl r Ar hostname |
| 228 | Print DNS resource record with the specified |
| 229 | .Ar hostname . |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 230 | .El |
| 231 | .Sh FILES |
| 232 | .Bl -tag -width Ds |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 233 | .It Pa $HOME/.ssh/identity |
Ben Lindstrom | 18a82ac | 2001-04-11 15:59:35 +0000 | [diff] [blame] | 234 | Contains the protocol version 1 RSA authentication identity of the user. |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 235 | This file should not be readable by anyone but the user. |
| 236 | It is possible to |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 237 | specify a passphrase when generating the key; that passphrase will be |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 238 | used to encrypt the private part of this file using 3DES. |
| 239 | This file is not automatically accessed by |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 240 | .Nm |
| 241 | but it is offered as the default file for the private key. |
Ben Lindstrom | bda98b0 | 2001-07-04 03:35:24 +0000 | [diff] [blame] | 242 | .Xr ssh 1 |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 243 | will read this file when a login attempt is made. |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 244 | .It Pa $HOME/.ssh/identity.pub |
Ben Lindstrom | 18a82ac | 2001-04-11 15:59:35 +0000 | [diff] [blame] | 245 | Contains the protocol version 1 RSA public key for authentication. |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 246 | The contents of this file should be added to |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 247 | .Pa $HOME/.ssh/authorized_keys |
| 248 | on all machines |
Ben Lindstrom | 594e203 | 2001-09-12 18:35:30 +0000 | [diff] [blame] | 249 | where the user wishes to log in using RSA authentication. |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 250 | There is no need to keep the contents of this file secret. |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 251 | .It Pa $HOME/.ssh/id_dsa |
Ben Lindstrom | 18a82ac | 2001-04-11 15:59:35 +0000 | [diff] [blame] | 252 | Contains the protocol version 2 DSA authentication identity of the user. |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 253 | This file should not be readable by anyone but the user. |
| 254 | It is possible to |
| 255 | specify a passphrase when generating the key; that passphrase will be |
| 256 | used to encrypt the private part of this file using 3DES. |
| 257 | This file is not automatically accessed by |
| 258 | .Nm |
| 259 | but it is offered as the default file for the private key. |
Ben Lindstrom | bda98b0 | 2001-07-04 03:35:24 +0000 | [diff] [blame] | 260 | .Xr ssh 1 |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 261 | will read this file when a login attempt is made. |
| 262 | .It Pa $HOME/.ssh/id_dsa.pub |
Ben Lindstrom | 18a82ac | 2001-04-11 15:59:35 +0000 | [diff] [blame] | 263 | Contains the protocol version 2 DSA public key for authentication. |
| 264 | The contents of this file should be added to |
Ben Lindstrom | f96704d | 2001-06-25 04:17:12 +0000 | [diff] [blame] | 265 | .Pa $HOME/.ssh/authorized_keys |
Ben Lindstrom | 18a82ac | 2001-04-11 15:59:35 +0000 | [diff] [blame] | 266 | on all machines |
Ben Lindstrom | 594e203 | 2001-09-12 18:35:30 +0000 | [diff] [blame] | 267 | where the user wishes to log in using public key authentication. |
Ben Lindstrom | 18a82ac | 2001-04-11 15:59:35 +0000 | [diff] [blame] | 268 | There is no need to keep the contents of this file secret. |
| 269 | .It Pa $HOME/.ssh/id_rsa |
| 270 | Contains the protocol version 2 RSA authentication identity of the user. |
| 271 | This file should not be readable by anyone but the user. |
| 272 | It is possible to |
| 273 | specify a passphrase when generating the key; that passphrase will be |
| 274 | used to encrypt the private part of this file using 3DES. |
| 275 | This file is not automatically accessed by |
| 276 | .Nm |
| 277 | but it is offered as the default file for the private key. |
Ben Lindstrom | bda98b0 | 2001-07-04 03:35:24 +0000 | [diff] [blame] | 278 | .Xr ssh 1 |
Ben Lindstrom | 18a82ac | 2001-04-11 15:59:35 +0000 | [diff] [blame] | 279 | will read this file when a login attempt is made. |
| 280 | .It Pa $HOME/.ssh/id_rsa.pub |
| 281 | Contains the protocol version 2 RSA public key for authentication. |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 282 | The contents of this file should be added to |
Ben Lindstrom | f96704d | 2001-06-25 04:17:12 +0000 | [diff] [blame] | 283 | .Pa $HOME/.ssh/authorized_keys |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 284 | on all machines |
Ben Lindstrom | 594e203 | 2001-09-12 18:35:30 +0000 | [diff] [blame] | 285 | where the user wishes to log in using public key authentication. |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 286 | There is no need to keep the contents of this file secret. |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 287 | .El |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 288 | .Sh AUTHORS |
Ben Lindstrom | 035782e | 2001-01-29 08:34:16 +0000 | [diff] [blame] | 289 | OpenSSH is a derivative of the original and free |
| 290 | ssh 1.2.12 release by Tatu Ylonen. |
| 291 | Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, |
| 292 | Theo de Raadt and Dug Song |
| 293 | removed many bugs, re-added newer features and |
| 294 | created OpenSSH. |
| 295 | Markus Friedl contributed the support for SSH |
| 296 | protocol versions 1.5 and 2.0. |
Damien Miller | 32aa144 | 1999-10-29 09:15:49 +1000 | [diff] [blame] | 297 | .Sh SEE ALSO |
| 298 | .Xr ssh 1 , |
| 299 | .Xr ssh-add 1 , |
Damien Miller | 2e8b1c8 | 1999-11-15 23:33:56 +1100 | [diff] [blame] | 300 | .Xr ssh-agent 1 , |
Ben Lindstrom | 77788dc | 2001-02-10 23:10:33 +0000 | [diff] [blame] | 301 | .Xr sshd 8 |
Ben Lindstrom | 5a70782 | 2001-04-22 17:15:46 +0000 | [diff] [blame] | 302 | .Rs |
Ben Lindstrom | 90fd060 | 2001-06-25 04:45:33 +0000 | [diff] [blame] | 303 | .%A J. Galbraith |
| 304 | .%A R. Thayer |
Ben Lindstrom | 5a70782 | 2001-04-22 17:15:46 +0000 | [diff] [blame] | 305 | .%T "SECSH Public Key File Format" |
| 306 | .%N draft-ietf-secsh-publickeyfile-01.txt |
| 307 | .%D March 2001 |
| 308 | .%O work in progress material |
| 309 | .Re |