- update OpenSSL to 0.9.8
[dragonfly.git] / secure / usr.bin / openssl / man / ciphers.1
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129.\" ========================================================================
130.\"
131.IX Title "CIPHERS 1"
a561f9ff 132.TH CIPHERS 1 "2005-07-06" "0.9.8" "OpenSSL"
984263bc 133.SH "NAME"
e3cdf75b 134ciphers \- SSL cipher display and cipher list tool.
984263bc 135.SH "SYNOPSIS"
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136.IX Header "SYNOPSIS"
137\&\fBopenssl\fR \fBciphers\fR
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138[\fB\-v\fR]
139[\fB\-ssl2\fR]
140[\fB\-ssl3\fR]
141[\fB\-tls1\fR]
142[\fBcipherlist\fR]
143.SH "DESCRIPTION"
8b0cefbb 144.IX Header "DESCRIPTION"
984263bc 145The \fBcipherlist\fR command converts OpenSSL cipher lists into ordered
8b0cefbb 146\&\s-1SSL\s0 cipher preference lists. It can be used as a test tool to determine
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147the appropriate cipherlist.
148.SH "COMMAND OPTIONS"
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149.IX Header "COMMAND OPTIONS"
150.IP "\fB\-v\fR" 4
151.IX Item "-v"
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152verbose option. List ciphers with a complete description of
153protocol version (SSLv2 or SSLv3; the latter includes \s-1TLS\s0), key exchange,
154authentication, encryption and mac algorithms used along with any key size
155restrictions and whether the algorithm is classed as an \*(L"export\*(R" cipher.
156Note that without the \fB\-v\fR option, ciphers may seem to appear twice
157in a cipher list; this is when similar ciphers are available for
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158\&\s-1SSL\s0 v2 and for \s-1SSL\s0 v3/TLS v1.
159.IP "\fB\-ssl3\fR" 4
160.IX Item "-ssl3"
984263bc 161only include \s-1SSL\s0 v3 ciphers.
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162.IP "\fB\-ssl2\fR" 4
163.IX Item "-ssl2"
984263bc 164only include \s-1SSL\s0 v2 ciphers.
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165.IP "\fB\-tls1\fR" 4
166.IX Item "-tls1"
984263bc 167only include \s-1TLS\s0 v1 ciphers.
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168.IP "\fB\-h\fR, \fB\-?\fR" 4
169.IX Item "-h, -?"
984263bc 170print a brief usage message.
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171.IP "\fBcipherlist\fR" 4
172.IX Item "cipherlist"
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173a cipher list to convert to a cipher preference list. If it is not included
174then the default cipher list will be used. The format is described below.
175.SH "CIPHER LIST FORMAT"
8b0cefbb 176.IX Header "CIPHER LIST FORMAT"
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177The cipher list consists of one or more \fIcipher strings\fR separated by colons.
178Commas or spaces are also acceptable separators but colons are normally used.
179.PP
180The actual cipher string can take several different forms.
181.PP
8b0cefbb 182It can consist of a single cipher suite such as \fB\s-1RC4\-SHA\s0\fR.
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183.PP
184It can represent a list of cipher suites containing a certain algorithm, or
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185cipher suites of a certain type. For example \fB\s-1SHA1\s0\fR represents all ciphers
186suites using the digest algorithm \s-1SHA1\s0 and \fBSSLv3\fR represents all \s-1SSL\s0 v3
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187algorithms.
188.PP
189Lists of cipher suites can be combined in a single cipher string using the
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190\&\fB+\fR character. This is used as a logical \fBand\fR operation. For example
191\&\fB\s-1SHA1+DES\s0\fR represents all cipher suites containing the \s-1SHA1\s0 \fBand\fR the \s-1DES\s0
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192algorithms.
193.PP
194Each cipher string can be optionally preceded by the characters \fB!\fR,
8b0cefbb 195\&\fB\-\fR or \fB+\fR.
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196.PP
197If \fB!\fR is used then the ciphers are permanently deleted from the list.
198The ciphers deleted can never reappear in the list even if they are
199explicitly stated.
200.PP
e3cdf75b 201If \fB\-\fR is used then the ciphers are deleted from the list, but some or
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202all of the ciphers can be added again by later options.
203.PP
204If \fB+\fR is used then the ciphers are moved to the end of the list. This
205option doesn't add any new ciphers it just moves matching existing ones.
206.PP
207If none of these characters is present then the string is just interpreted
208as a list of ciphers to be appended to the current preference list. If the
209list includes any ciphers already present they will be ignored: that is they
210will not moved to the end of the list.
211.PP
212Additionally the cipher string \fB@STRENGTH\fR can be used at any point to sort
213the current cipher list in order of encryption algorithm key length.
214.SH "CIPHER STRINGS"
8b0cefbb 215.IX Header "CIPHER STRINGS"
984263bc 216The following is a list of all permitted cipher strings and their meanings.
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217.IP "\fB\s-1DEFAULT\s0\fR" 4
218.IX Item "DEFAULT"
984263bc 219the default cipher list. This is determined at compile time and is normally
8b0cefbb 220\&\fB\s-1ALL:\s0!ADH:RC4+RSA:+SSLv2:@STRENGTH\fR. This must be the first cipher string
984263bc 221specified.
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222.IP "\fB\s-1COMPLEMENTOFDEFAULT\s0\fR" 4
223.IX Item "COMPLEMENTOFDEFAULT"
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224the ciphers included in \fB\s-1ALL\s0\fR, but not enabled by default. Currently
225this is \fB\s-1ADH\s0\fR. Note that this rule does not cover \fBeNULL\fR, which is
226not included by \fB\s-1ALL\s0\fR (use \fB\s-1COMPLEMENTOFALL\s0\fR if necessary).
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227.IP "\fB\s-1ALL\s0\fR" 4
228.IX Item "ALL"
984263bc 229all ciphers suites except the \fBeNULL\fR ciphers which must be explicitly enabled.
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230.IP "\fB\s-1COMPLEMENTOFALL\s0\fR" 4
231.IX Item "COMPLEMENTOFALL"
984263bc 232the cipher suites not enabled by \fB\s-1ALL\s0\fR, currently being \fBeNULL\fR.
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233.IP "\fB\s-1HIGH\s0\fR" 4
234.IX Item "HIGH"
235\&\*(L"high\*(R" encryption cipher suites. This currently means those with key lengths larger
984263bc 236than 128 bits.
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237.IP "\fB\s-1MEDIUM\s0\fR" 4
238.IX Item "MEDIUM"
239\&\*(L"medium\*(R" encryption cipher suites, currently those using 128 bit encryption.
240.IP "\fB\s-1LOW\s0\fR" 4
241.IX Item "LOW"
242\&\*(L"low\*(R" encryption cipher suites, currently those using 64 or 56 bit encryption algorithms
984263bc 243but excluding export cipher suites.
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244.IP "\fB\s-1EXP\s0\fR, \fB\s-1EXPORT\s0\fR" 4
245.IX Item "EXP, EXPORT"
984263bc 246export encryption algorithms. Including 40 and 56 bits algorithms.
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247.IP "\fB\s-1EXPORT40\s0\fR" 4
248.IX Item "EXPORT40"
984263bc 24940 bit export encryption algorithms
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250.IP "\fB\s-1EXPORT56\s0\fR" 4
251.IX Item "EXPORT56"
984263bc 25256 bit export encryption algorithms.
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253.IP "\fBeNULL\fR, \fB\s-1NULL\s0\fR" 4
254.IX Item "eNULL, NULL"
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255the \*(L"\s-1NULL\s0\*(R" ciphers that is those offering no encryption. Because these offer no
256encryption at all and are a security risk they are disabled unless explicitly
257included.
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258.IP "\fBaNULL\fR" 4
259.IX Item "aNULL"
984263bc 260the cipher suites offering no authentication. This is currently the anonymous
8b0cefbb 261\&\s-1DH\s0 algorithms. These cipher suites are vulnerable to a \*(L"man in the middle\*(R"
984263bc 262attack and so their use is normally discouraged.
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263.IP "\fBkRSA\fR, \fB\s-1RSA\s0\fR" 4
264.IX Item "kRSA, RSA"
984263bc 265cipher suites using \s-1RSA\s0 key exchange.
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266.IP "\fBkEDH\fR" 4
267.IX Item "kEDH"
984263bc 268cipher suites using ephemeral \s-1DH\s0 key agreement.
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269.IP "\fBkDHr\fR, \fBkDHd\fR" 4
270.IX Item "kDHr, kDHd"
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271cipher suites using \s-1DH\s0 key agreement and \s-1DH\s0 certificates signed by CAs with \s-1RSA\s0
272and \s-1DSS\s0 keys respectively. Not implemented.
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273.IP "\fBaRSA\fR" 4
274.IX Item "aRSA"
984263bc 275cipher suites using \s-1RSA\s0 authentication, i.e. the certificates carry \s-1RSA\s0 keys.
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276.IP "\fBaDSS\fR, \fB\s-1DSS\s0\fR" 4
277.IX Item "aDSS, DSS"
984263bc 278cipher suites using \s-1DSS\s0 authentication, i.e. the certificates carry \s-1DSS\s0 keys.
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279.IP "\fBaDH\fR" 4
280.IX Item "aDH"
984263bc 281cipher suites effectively using \s-1DH\s0 authentication, i.e. the certificates carry
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282\&\s-1DH\s0 keys. Not implemented.
283.IP "\fBkFZA\fR, \fBaFZA\fR, \fBeFZA\fR, \fB\s-1FZA\s0\fR" 4
284.IX Item "kFZA, aFZA, eFZA, FZA"
984263bc 285ciphers suites using \s-1FORTEZZA\s0 key exchange, authentication, encryption or all
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286\&\s-1FORTEZZA\s0 algorithms. Not implemented.
287.IP "\fBTLSv1\fR, \fBSSLv3\fR, \fBSSLv2\fR" 4
288.IX Item "TLSv1, SSLv3, SSLv2"
289\&\s-1TLS\s0 v1.0, \s-1SSL\s0 v3.0 or \s-1SSL\s0 v2.0 cipher suites respectively.
290.IP "\fB\s-1DH\s0\fR" 4
291.IX Item "DH"
984263bc 292cipher suites using \s-1DH\s0, including anonymous \s-1DH\s0.
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293.IP "\fB\s-1ADH\s0\fR" 4
294.IX Item "ADH"
984263bc 295anonymous \s-1DH\s0 cipher suites.
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296.IP "\fB\s-1AES\s0\fR" 4
297.IX Item "AES"
984263bc 298cipher suites using \s-1AES\s0.
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299.IP "\fB3DES\fR" 4
300.IX Item "3DES"
984263bc 301cipher suites using triple \s-1DES\s0.
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302.IP "\fB\s-1DES\s0\fR" 4
303.IX Item "DES"
984263bc 304cipher suites using \s-1DES\s0 (not triple \s-1DES\s0).
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305.IP "\fB\s-1RC4\s0\fR" 4
306.IX Item "RC4"
984263bc 307cipher suites using \s-1RC4\s0.
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308.IP "\fB\s-1RC2\s0\fR" 4
309.IX Item "RC2"
984263bc 310cipher suites using \s-1RC2\s0.
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311.IP "\fB\s-1IDEA\s0\fR" 4
312.IX Item "IDEA"
984263bc 313cipher suites using \s-1IDEA\s0.
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314.IP "\fB\s-1MD5\s0\fR" 4
315.IX Item "MD5"
984263bc 316cipher suites using \s-1MD5\s0.
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317.IP "\fB\s-1SHA1\s0\fR, \fB\s-1SHA\s0\fR" 4
318.IX Item "SHA1, SHA"
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319cipher suites using \s-1SHA1\s0.
320.SH "CIPHER SUITE NAMES"
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321.IX Header "CIPHER SUITE NAMES"
322The following lists give the \s-1SSL\s0 or \s-1TLS\s0 cipher suites names from the
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323relevant specification and their OpenSSL equivalents. It should be noted,
324that several cipher suite names do not include the authentication used,
8b0cefbb 325e.g. \s-1DES\-CBC3\-SHA\s0. In these cases, \s-1RSA\s0 authentication is used.
984263bc 326.Sh "\s-1SSL\s0 v3.0 cipher suites."
8b0cefbb 327.IX Subsection "SSL v3.0 cipher suites."
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328.Vb 10
329\& SSL_RSA_WITH_NULL_MD5 NULL-MD5
330\& SSL_RSA_WITH_NULL_SHA NULL-SHA
331\& SSL_RSA_EXPORT_WITH_RC4_40_MD5 EXP-RC4-MD5
332\& SSL_RSA_WITH_RC4_128_MD5 RC4-MD5
333\& SSL_RSA_WITH_RC4_128_SHA RC4-SHA
334\& SSL_RSA_EXPORT_WITH_RC2_CBC_40_MD5 EXP-RC2-CBC-MD5
335\& SSL_RSA_WITH_IDEA_CBC_SHA IDEA-CBC-SHA
336\& SSL_RSA_EXPORT_WITH_DES40_CBC_SHA EXP-DES-CBC-SHA
337\& SSL_RSA_WITH_DES_CBC_SHA DES-CBC-SHA
338\& SSL_RSA_WITH_3DES_EDE_CBC_SHA DES-CBC3-SHA
339.Ve
8b0cefbb 340.PP
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341.Vb 12
342\& SSL_DH_DSS_EXPORT_WITH_DES40_CBC_SHA Not implemented.
343\& SSL_DH_DSS_WITH_DES_CBC_SHA Not implemented.
344\& SSL_DH_DSS_WITH_3DES_EDE_CBC_SHA Not implemented.
345\& SSL_DH_RSA_EXPORT_WITH_DES40_CBC_SHA Not implemented.
346\& SSL_DH_RSA_WITH_DES_CBC_SHA Not implemented.
347\& SSL_DH_RSA_WITH_3DES_EDE_CBC_SHA Not implemented.
348\& SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA EXP-EDH-DSS-DES-CBC-SHA
349\& SSL_DHE_DSS_WITH_DES_CBC_SHA EDH-DSS-CBC-SHA
350\& SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA EDH-DSS-DES-CBC3-SHA
351\& SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA EXP-EDH-RSA-DES-CBC-SHA
352\& SSL_DHE_RSA_WITH_DES_CBC_SHA EDH-RSA-DES-CBC-SHA
353\& SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA EDH-RSA-DES-CBC3-SHA
354.Ve
8b0cefbb 355.PP
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356.Vb 5
357\& SSL_DH_anon_EXPORT_WITH_RC4_40_MD5 EXP-ADH-RC4-MD5
358\& SSL_DH_anon_WITH_RC4_128_MD5 ADH-RC4-MD5
359\& SSL_DH_anon_EXPORT_WITH_DES40_CBC_SHA EXP-ADH-DES-CBC-SHA
360\& SSL_DH_anon_WITH_DES_CBC_SHA ADH-DES-CBC-SHA
361\& SSL_DH_anon_WITH_3DES_EDE_CBC_SHA ADH-DES-CBC3-SHA
362.Ve
8b0cefbb 363.PP
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364.Vb 3
365\& SSL_FORTEZZA_KEA_WITH_NULL_SHA Not implemented.
366\& SSL_FORTEZZA_KEA_WITH_FORTEZZA_CBC_SHA Not implemented.
367\& SSL_FORTEZZA_KEA_WITH_RC4_128_SHA Not implemented.
368.Ve
369.Sh "\s-1TLS\s0 v1.0 cipher suites."
8b0cefbb 370.IX Subsection "TLS v1.0 cipher suites."
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371.Vb 10
372\& TLS_RSA_WITH_NULL_MD5 NULL-MD5
373\& TLS_RSA_WITH_NULL_SHA NULL-SHA
374\& TLS_RSA_EXPORT_WITH_RC4_40_MD5 EXP-RC4-MD5
375\& TLS_RSA_WITH_RC4_128_MD5 RC4-MD5
376\& TLS_RSA_WITH_RC4_128_SHA RC4-SHA
377\& TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5 EXP-RC2-CBC-MD5
378\& TLS_RSA_WITH_IDEA_CBC_SHA IDEA-CBC-SHA
379\& TLS_RSA_EXPORT_WITH_DES40_CBC_SHA EXP-DES-CBC-SHA
380\& TLS_RSA_WITH_DES_CBC_SHA DES-CBC-SHA
381\& TLS_RSA_WITH_3DES_EDE_CBC_SHA DES-CBC3-SHA
382.Ve
8b0cefbb 383.PP
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384.Vb 12
385\& TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA Not implemented.
386\& TLS_DH_DSS_WITH_DES_CBC_SHA Not implemented.
387\& TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA Not implemented.
388\& TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA Not implemented.
389\& TLS_DH_RSA_WITH_DES_CBC_SHA Not implemented.
390\& TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA Not implemented.
391\& TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA EXP-EDH-DSS-DES-CBC-SHA
392\& TLS_DHE_DSS_WITH_DES_CBC_SHA EDH-DSS-CBC-SHA
393\& TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA EDH-DSS-DES-CBC3-SHA
394\& TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA EXP-EDH-RSA-DES-CBC-SHA
395\& TLS_DHE_RSA_WITH_DES_CBC_SHA EDH-RSA-DES-CBC-SHA
396\& TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA EDH-RSA-DES-CBC3-SHA
397.Ve
8b0cefbb 398.PP
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399.Vb 5
400\& TLS_DH_anon_EXPORT_WITH_RC4_40_MD5 EXP-ADH-RC4-MD5
401\& TLS_DH_anon_WITH_RC4_128_MD5 ADH-RC4-MD5
402\& TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA EXP-ADH-DES-CBC-SHA
403\& TLS_DH_anon_WITH_DES_CBC_SHA ADH-DES-CBC-SHA
404\& TLS_DH_anon_WITH_3DES_EDE_CBC_SHA ADH-DES-CBC3-SHA
405.Ve
406.Sh "\s-1AES\s0 ciphersuites from \s-1RFC3268\s0, extending \s-1TLS\s0 v1.0"
8b0cefbb 407.IX Subsection "AES ciphersuites from RFC3268, extending TLS v1.0"
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408.Vb 2
409\& TLS_RSA_WITH_AES_128_CBC_SHA AES128-SHA
410\& TLS_RSA_WITH_AES_256_CBC_SHA AES256-SHA
411.Ve
8b0cefbb 412.PP
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413.Vb 4
414\& TLS_DH_DSS_WITH_AES_128_CBC_SHA DH-DSS-AES128-SHA
415\& TLS_DH_DSS_WITH_AES_256_CBC_SHA DH-DSS-AES256-SHA
416\& TLS_DH_RSA_WITH_AES_128_CBC_SHA DH-RSA-AES128-SHA
417\& TLS_DH_RSA_WITH_AES_256_CBC_SHA DH-RSA-AES256-SHA
418.Ve
8b0cefbb 419.PP
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420.Vb 4
421\& TLS_DHE_DSS_WITH_AES_128_CBC_SHA DHE-DSS-AES128-SHA
422\& TLS_DHE_DSS_WITH_AES_256_CBC_SHA DHE-DSS-AES256-SHA
423\& TLS_DHE_RSA_WITH_AES_128_CBC_SHA DHE-RSA-AES128-SHA
424\& TLS_DHE_RSA_WITH_AES_256_CBC_SHA DHE-RSA-AES256-SHA
425.Ve
8b0cefbb 426.PP
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427.Vb 2
428\& TLS_DH_anon_WITH_AES_128_CBC_SHA ADH-AES128-SHA
429\& TLS_DH_anon_WITH_AES_256_CBC_SHA ADH-AES256-SHA
430.Ve
431.Sh "Additional Export 1024 and other cipher suites"
8b0cefbb 432.IX Subsection "Additional Export 1024 and other cipher suites"
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433Note: these ciphers can also be used in \s-1SSL\s0 v3.
434.PP
435.Vb 5
436\& TLS_RSA_EXPORT1024_WITH_DES_CBC_SHA EXP1024-DES-CBC-SHA
437\& TLS_RSA_EXPORT1024_WITH_RC4_56_SHA EXP1024-RC4-SHA
438\& TLS_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA EXP1024-DHE-DSS-DES-CBC-SHA
439\& TLS_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA EXP1024-DHE-DSS-RC4-SHA
440\& TLS_DHE_DSS_WITH_RC4_128_SHA DHE-DSS-RC4-SHA
441.Ve
442.Sh "\s-1SSL\s0 v2.0 cipher suites."
8b0cefbb 443.IX Subsection "SSL v2.0 cipher suites."
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444.Vb 7
445\& SSL_CK_RC4_128_WITH_MD5 RC4-MD5
446\& SSL_CK_RC4_128_EXPORT40_WITH_MD5 EXP-RC4-MD5
447\& SSL_CK_RC2_128_CBC_WITH_MD5 RC2-MD5
448\& SSL_CK_RC2_128_CBC_EXPORT40_WITH_MD5 EXP-RC2-MD5
449\& SSL_CK_IDEA_128_CBC_WITH_MD5 IDEA-CBC-MD5
450\& SSL_CK_DES_64_CBC_WITH_MD5 DES-CBC-MD5
451\& SSL_CK_DES_192_EDE3_CBC_WITH_MD5 DES-CBC3-MD5
452.Ve
453.SH "NOTES"
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454.IX Header "NOTES"
455The non-ephemeral \s-1DH\s0 modes are currently unimplemented in OpenSSL
456because there is no support for \s-1DH\s0 certificates.
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457.PP
458Some compiled versions of OpenSSL may not include all the ciphers
459listed here because some ciphers were excluded at compile time.
460.SH "EXAMPLES"
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461.IX Header "EXAMPLES"
462Verbose listing of all OpenSSL ciphers including \s-1NULL\s0 ciphers:
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463.PP
464.Vb 1
465\& openssl ciphers -v 'ALL:eNULL'
466.Ve
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467.PP
468Include all ciphers except \s-1NULL\s0 and anonymous \s-1DH\s0 then sort by
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469strength:
470.PP
471.Vb 1
472\& openssl ciphers -v 'ALL:!ADH:@STRENGTH'
473.Ve
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474.PP
475Include only 3DES ciphers and then place \s-1RSA\s0 ciphers last:
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476.PP
477.Vb 1
478\& openssl ciphers -v '3DES:+RSA'
479.Ve
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480.PP
481Include all \s-1RC4\s0 ciphers but leave out those without authentication:
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482.PP
483.Vb 1
484\& openssl ciphers -v 'RC4:!COMPLEMENTOFDEFAULT'
485.Ve
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486.PP
487Include all chiphers with \s-1RSA\s0 authentication but leave out ciphers without
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488encryption.
489.PP
490.Vb 1
491\& openssl ciphers -v 'RSA:!COMPLEMENTOFALL'
492.Ve
493.SH "SEE ALSO"
e3cdf75b 494.IX Header "SEE ALSO"
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495\&\fIs_client\fR\|(1), \fIs_server\fR\|(1), \fIssl\fR\|(3)
496.SH "HISTORY"
e3cdf75b 497.IX Header "HISTORY"
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498The \fB\s-1COMPLENTOFALL\s0\fR and \fB\s-1COMPLEMENTOFDEFAULT\s0\fR selection options were
499added in version 0.9.7.