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| 132 | .\" ======================================================================== |
| 133 | .\" |
| 134 | .IX Title "SESS_ID 1" |
| 135 | .TH SESS_ID 1 "2009-01-11" "0.9.8j" "OpenSSL" |
| 136 | .\" For nroff, turn off justification. Always turn off hyphenation; it makes |
| 137 | .\" way too many mistakes in technical documents. |
| 138 | .if n .ad l |
| 139 | .nh |
| 140 | .SH "NAME" |
| 141 | sess_id \- SSL/TLS session handling utility |
| 142 | .SH "SYNOPSIS" |
| 143 | .IX Header "SYNOPSIS" |
| 144 | \&\fBopenssl\fR \fBsess_id\fR |
| 145 | [\fB\-inform PEM|DER\fR] |
| 146 | [\fB\-outform PEM|DER\fR] |
| 147 | [\fB\-in filename\fR] |
| 148 | [\fB\-out filename\fR] |
| 149 | [\fB\-text\fR] |
| 150 | [\fB\-noout\fR] |
| 151 | [\fB\-context \s-1ID\s0\fR] |
| 152 | .SH "DESCRIPTION" |
| 153 | .IX Header "DESCRIPTION" |
| 154 | The \fBsess_id\fR process the encoded version of the \s-1SSL\s0 session structure |
| 155 | and optionally prints out \s-1SSL\s0 session details (for example the \s-1SSL\s0 session |
| 156 | master key) in human readable format. Since this is a diagnostic tool that |
| 157 | needs some knowledge of the \s-1SSL\s0 protocol to use properly, most users will |
| 158 | not need to use it. |
| 159 | .IP "\fB\-inform DER|PEM\fR" 4 |
| 160 | .IX Item "-inform DER|PEM" |
| 161 | This specifies the input format. The \fB\s-1DER\s0\fR option uses an \s-1ASN1\s0 \s-1DER\s0 encoded |
| 162 | format containing session details. The precise format can vary from one version |
| 163 | to the next. The \fB\s-1PEM\s0\fR form is the default format: it consists of the \fB\s-1DER\s0\fR |
| 164 | format base64 encoded with additional header and footer lines. |
| 165 | .IP "\fB\-outform DER|PEM\fR" 4 |
| 166 | .IX Item "-outform DER|PEM" |
| 167 | This specifies the output format, the options have the same meaning as the |
| 168 | \&\fB\-inform\fR option. |
| 169 | .IP "\fB\-in filename\fR" 4 |
| 170 | .IX Item "-in filename" |
| 171 | This specifies the input filename to read session information from or standard |
| 172 | input by default. |
| 173 | .IP "\fB\-out filename\fR" 4 |
| 174 | .IX Item "-out filename" |
| 175 | This specifies the output filename to write session information to or standard |
| 176 | output if this option is not specified. |
| 177 | .IP "\fB\-text\fR" 4 |
| 178 | .IX Item "-text" |
| 179 | prints out the various public or private key components in |
| 180 | plain text in addition to the encoded version. |
| 181 | .IP "\fB\-cert\fR" 4 |
| 182 | .IX Item "-cert" |
| 183 | if a certificate is present in the session it will be output using this option, |
| 184 | if the \fB\-text\fR option is also present then it will be printed out in text form. |
| 185 | .IP "\fB\-noout\fR" 4 |
| 186 | .IX Item "-noout" |
| 187 | this option prevents output of the encoded version of the session. |
| 188 | .IP "\fB\-context \s-1ID\s0\fR" 4 |
| 189 | .IX Item "-context ID" |
| 190 | this option can set the session id so the output session information uses the |
| 191 | supplied \s-1ID\s0. The \s-1ID\s0 can be any string of characters. This option wont normally |
| 192 | be used. |
| 193 | .SH "OUTPUT" |
| 194 | .IX Header "OUTPUT" |
| 195 | Typical output: |
| 196 | .PP |
| 197 | .Vb 10 |
| 198 | \& SSL\-Session: |
| 199 | \& Protocol : TLSv1 |
| 200 | \& Cipher : 0016 |
| 201 | \& Session\-ID: 871E62626C554CE95488823752CBD5F3673A3EF3DCE9C67BD916C809914B40ED |
| 202 | \& Session\-ID\-ctx: 01000000 |
| 203 | \& Master\-Key: A7CEFC571974BE02CAC305269DC59F76EA9F0B180CB6642697A68251F2D2BB57E51DBBB4C7885573192AE9AEE220FACD |
| 204 | \& Key\-Arg : None |
| 205 | \& Start Time: 948459261 |
| 206 | \& Timeout : 300 (sec) |
| 207 | \& Verify return code 0 (ok) |
| 208 | .Ve |
| 209 | .PP |
| 210 | Theses are described below in more detail. |
| 211 | .IP "\fBProtocol\fR" 4 |
| 212 | .IX Item "Protocol" |
| 213 | this is the protocol in use TLSv1, SSLv3 or SSLv2. |
| 214 | .IP "\fBCipher\fR" 4 |
| 215 | .IX Item "Cipher" |
| 216 | the cipher used this is the actual raw \s-1SSL\s0 or \s-1TLS\s0 cipher code, see the \s-1SSL\s0 |
| 217 | or \s-1TLS\s0 specifications for more information. |
| 218 | .IP "\fBSession-ID\fR" 4 |
| 219 | .IX Item "Session-ID" |
| 220 | the \s-1SSL\s0 session \s-1ID\s0 in hex format. |
| 221 | .IP "\fBSession-ID-ctx\fR" 4 |
| 222 | .IX Item "Session-ID-ctx" |
| 223 | the session \s-1ID\s0 context in hex format. |
| 224 | .IP "\fBMaster-Key\fR" 4 |
| 225 | .IX Item "Master-Key" |
| 226 | this is the \s-1SSL\s0 session master key. |
| 227 | .IP "\fBKey-Arg\fR" 4 |
| 228 | .IX Item "Key-Arg" |
| 229 | the key argument, this is only used in \s-1SSL\s0 v2. |
| 230 | .IP "\fBStart Time\fR" 4 |
| 231 | .IX Item "Start Time" |
| 232 | this is the session start time represented as an integer in standard Unix format. |
| 233 | .IP "\fBTimeout\fR" 4 |
| 234 | .IX Item "Timeout" |
| 235 | the timeout in seconds. |
| 236 | .IP "\fBVerify return code\fR" 4 |
| 237 | .IX Item "Verify return code" |
| 238 | this is the return code when an \s-1SSL\s0 client certificate is verified. |
| 239 | .SH "NOTES" |
| 240 | .IX Header "NOTES" |
| 241 | The \s-1PEM\s0 encoded session format uses the header and footer lines: |
| 242 | .PP |
| 243 | .Vb 2 |
| 244 | \& \-\-\-\-\-BEGIN SSL SESSION PARAMETERS\-\-\-\-\- |
| 245 | \& \-\-\-\-\-END SSL SESSION PARAMETERS\-\-\-\-\- |
| 246 | .Ve |
| 247 | .PP |
| 248 | Since the \s-1SSL\s0 session output contains the master key it is possible to read the contents |
| 249 | of an encrypted session using this information. Therefore appropriate security precautions |
| 250 | should be taken if the information is being output by a \*(L"real\*(R" application. This is |
| 251 | however strongly discouraged and should only be used for debugging purposes. |
| 252 | .SH "BUGS" |
| 253 | .IX Header "BUGS" |
| 254 | The cipher and start time should be printed out in human readable form. |
| 255 | .SH "SEE ALSO" |
| 256 | .IX Header "SEE ALSO" |
| 257 | \&\fIciphers\fR\|(1), \fIs_server\fR\|(1) |