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Commit | Line | Data |
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e3775a33 DSH |
1 | =pod |
2 | ||
9fcb9702 RS |
3 | =begin comment |
4 | {- join("\n", @autowarntext) -} | |
5 | ||
6 | =end comment | |
7 | ||
e3775a33 DSH |
8 | =head1 NAME |
9 | ||
b6b66573 | 10 | openssl-smime - S/MIME utility |
e3775a33 DSH |
11 | |
12 | =head1 SYNOPSIS | |
13 | ||
14 | B<openssl> B<smime> | |
169394d4 | 15 | [B<-help>] |
e3775a33 DSH |
16 | [B<-encrypt>] |
17 | [B<-decrypt>] | |
18 | [B<-sign>] | |
d884c5ba | 19 | [B<-resign>] |
e3775a33 DSH |
20 | [B<-verify>] |
21 | [B<-pk7out>] | |
2197494d DSH |
22 | [B<-binary>] |
23 | [B<-crlfeol>] | |
8dc57d76 | 24 | [B<-I<cipher>>] |
e8769719 | 25 | [B<-in> I<file>] |
e8769719 | 26 | [B<-attime> I<timestamp>] |
e42d84be HK |
27 | [B<-check_ss_sig>] |
28 | [B<-crl_check>] | |
29 | [B<-crl_check_all>] | |
30 | [B<-explicit_policy>] | |
31 | [B<-extended_crl>] | |
32 | [B<-ignore_critical>] | |
33 | [B<-inhibit_any>] | |
34 | [B<-inhibit_map>] | |
e42d84be | 35 | [B<-partial_chain>] |
e8769719 | 36 | [B<-policy> I<arg>] |
e42d84be HK |
37 | [B<-policy_check>] |
38 | [B<-policy_print>] | |
e8769719 | 39 | [B<-purpose> I<purpose>] |
e42d84be HK |
40 | [B<-suiteB_128>] |
41 | [B<-suiteB_128_only>] | |
42 | [B<-suiteB_192>] | |
6d3d5793 | 43 | [B<-trusted_first>] |
fa7b0111 | 44 | [B<-no_alt_chains>] |
e42d84be | 45 | [B<-use_deltas>] |
e8769719 RS |
46 | [B<-auth_level> I<num>] |
47 | [B<-verify_depth> I<num>] | |
48 | [B<-verify_email> I<email>] | |
49 | [B<-verify_hostname> I<hostname>] | |
50 | [B<-verify_ip> I<ip>] | |
51 | [B<-verify_name> I<name>] | |
e42d84be | 52 | [B<-x509_strict>] |
e8769719 RS |
53 | [B<-certfile> I<file>] |
54 | [B<-signer> I<file>] | |
55 | [B<-recip> I< file>] | |
56 | [B<-inform> B<DER>|B<PEM>|B<SMIME>] | |
777182a0 RS |
57 | [B<-outform> B<DER>|B<PEM>|B<SMIME>] |
58 | [B<-keyform> B<DER>|B<PEM>|B<ENGINE>] | |
e8769719 RS |
59 | [B<-passin> I<arg>] |
60 | [B<-inkey> I<file_or_id>] | |
61 | [B<-out> I<file>] | |
e8769719 RS |
62 | [B<-content> I<file>] |
63 | [B<-to> I<addr>] | |
64 | [B<-from> I<ad>] | |
65 | [B<-subject> I<s>] | |
e3775a33 | 66 | [B<-text>] |
76b46e77 DSH |
67 | [B<-indef>] |
68 | [B<-noindef>] | |
69 | [B<-stream>] | |
e8769719 | 70 | [B<-md> I<digest>] |
9fcb9702 RS |
71 | {- $OpenSSL::safe::opt_trust_synopsis -} |
72 | {- $OpenSSL::safe::opt_r_synopsis -} | |
b1c0cc24 | 73 | I<cert.pem> ... |
e3775a33 | 74 | |
9f3c076b | 75 | =for openssl ifdef engine |
1738c0ce | 76 | |
e3775a33 DSH |
77 | =head1 DESCRIPTION |
78 | ||
35a810bb RL |
79 | This command handles S/MIME mail. It can encrypt, decrypt, sign |
80 | and verify S/MIME messages. | |
e3775a33 | 81 | |
3dfda1a6 | 82 | =head1 OPTIONS |
e3775a33 | 83 | |
76b46e77 | 84 | There are six operation options that set the type of operation to be performed. |
e3775a33 DSH |
85 | The meaning of the other options varies according to the operation type. |
86 | ||
87 | =over 4 | |
88 | ||
169394d4 MR |
89 | =item B<-help> |
90 | ||
91 | Print out a usage message. | |
92 | ||
e3775a33 DSH |
93 | =item B<-encrypt> |
94 | ||
c4de074e | 95 | Encrypt mail for the given recipient certificates. Input file is the message |
e3775a33 DSH |
96 | to be encrypted. The output file is the encrypted mail in MIME format. |
97 | ||
2a9afa40 RS |
98 | Note that no revocation check is done for the recipient cert, so if that |
99 | key has been compromised, others may be able to decrypt the text. | |
100 | ||
e3775a33 DSH |
101 | =item B<-decrypt> |
102 | ||
c4de074e | 103 | Decrypt mail using the supplied certificate and private key. Expects an |
e3775a33 DSH |
104 | encrypted mail message in MIME format for the input file. The decrypted mail |
105 | is written to the output file. | |
106 | ||
107 | =item B<-sign> | |
108 | ||
c4de074e | 109 | Sign mail using the supplied certificate and private key. Input file is |
e3775a33 DSH |
110 | the message to be signed. The signed message in MIME format is written |
111 | to the output file. | |
112 | ||
113 | =item B<-verify> | |
114 | ||
c4de074e | 115 | Verify signed mail. Expects a signed mail message on input and outputs |
e3775a33 DSH |
116 | the signed data. Both clear text and opaque signing is supported. |
117 | ||
118 | =item B<-pk7out> | |
119 | ||
c4de074e | 120 | Takes an input message and writes out a PEM encoded PKCS#7 structure. |
e3775a33 | 121 | |
d884c5ba DSH |
122 | =item B<-resign> |
123 | ||
c4de074e | 124 | Resign a message: take an existing message and one or more new signers. |
d884c5ba | 125 | |
e8769719 | 126 | =item B<-in> I<filename> |
e3775a33 | 127 | |
c4de074e | 128 | The input message to be encrypted or signed or the MIME message to |
e3775a33 DSH |
129 | be decrypted or verified. |
130 | ||
e8769719 | 131 | =item B<-out> I<filename> |
e3775a33 | 132 | |
c4de074e | 133 | The message text that has been decrypted or verified or the output MIME |
e3775a33 DSH |
134 | format message that has been signed or verified. |
135 | ||
777182a0 RS |
136 | =item B<-inform> B<DER>|B<PEM>|B<SMIME> |
137 | ||
138 | The input format of the PKCS#7 (S/MIME) structure (if one is being read); | |
139 | the default is B<SMIME>. | |
140 | See L<openssl(1)/Format Options> for details. | |
141 | ||
e8769719 | 142 | =item B<-outform> B<DER>|B<PEM>|B<SMIME> |
fd13f0ee | 143 | |
777182a0 RS |
144 | The output format of the PKCS#7 (S/MIME) structure (if one is being written); |
145 | the default is B<SMIME>. | |
146 | See L<openssl(1)/Format Options> for details. | |
147 | ||
148 | =item B<-keyform> B<DER>|B<PEM> | |
149 | ||
150 | The key format; the default is B<PEM>. | |
151 | See L<openssl(1)/Format Options> for details. | |
fd13f0ee | 152 | |
e8769719 | 153 | =item B<-stream>, B<-indef>, B<-noindef> |
76b46e77 | 154 | |
c4de074e | 155 | The B<-stream> and B<-indef> options are equivalent and enable streaming I/O |
76b46e77 DSH |
156 | for encoding operations. This permits single pass processing of data without |
157 | the need to hold the entire contents in memory, potentially supporting very | |
158 | large files. Streaming is automatically set for S/MIME signing with detached | |
159 | data if the output format is B<SMIME> it is currently off by default for all | |
160 | other operations. | |
161 | ||
162 | =item B<-noindef> | |
163 | ||
c4de074e | 164 | Disable streaming I/O where it would produce and indefinite length constructed |
76b46e77 DSH |
165 | encoding. This option currently has no effect. In future streaming will be |
166 | enabled by default on all relevant operations and this option will disable it. | |
167 | ||
e8769719 | 168 | =item B<-content> I<filename> |
fd13f0ee DSH |
169 | |
170 | This specifies a file containing the detached content, this is only | |
171 | useful with the B<-verify> command. This is only usable if the PKCS#7 | |
172 | structure is using the detached signature form where the content is | |
173 | not included. This option will override any content if the input format | |
174 | is S/MIME and it uses the multipart/signed MIME content type. | |
175 | ||
e3775a33 DSH |
176 | =item B<-text> |
177 | ||
c4de074e | 178 | This option adds plain text (text/plain) MIME headers to the supplied |
e3775a33 | 179 | message if encrypting or signing. If decrypting or verifying it strips |
1bc74519 | 180 | off text headers: if the decrypted or verified message is not of MIME |
e3775a33 DSH |
181 | type text/plain then an error occurs. |
182 | ||
e8769719 | 183 | =item B<-md> I<digest> |
d884c5ba | 184 | |
c4de074e | 185 | Digest algorithm to use when signing or resigning. If not present then the |
d884c5ba DSH |
186 | default digest algorithm for the signing key will be used (usually SHA1). |
187 | ||
8dc57d76 | 188 | =item B<-I<cipher>> |
e3775a33 | 189 | |
c4de074e | 190 | The encryption algorithm to use. For example DES (56 bits) - B<-des>, |
e5fa864f | 191 | triple DES (168 bits) - B<-des3>, |
1bc74519 | 192 | EVP_get_cipherbyname() function) can also be used preceded by a dash, for |
35a810bb | 193 | example B<-aes-128-cbc>. See L<openssl-enc(1)> for list of ciphers |
e5fa864f | 194 | supported by your version of OpenSSL. |
d884c5ba | 195 | |
6f719f06 | 196 | If not specified triple DES is used. Only used with B<-encrypt>. |
e3775a33 DSH |
197 | |
198 | =item B<-nointern> | |
199 | ||
c4de074e | 200 | When verifying a message normally certificates (if any) included in |
e3775a33 DSH |
201 | the message are searched for the signing certificate. With this option |
202 | only the certificates specified in the B<-certfile> option are used. | |
203 | The supplied certificates can still be used as untrusted CAs however. | |
204 | ||
205 | =item B<-noverify> | |
206 | ||
c4de074e | 207 | Do not verify the signers certificate of a signed message. |
e3775a33 DSH |
208 | |
209 | =item B<-nochain> | |
210 | ||
c4de074e | 211 | Do not do chain verification of signers certificates: that is don't |
e3775a33 DSH |
212 | use the certificates in the signed message as untrusted CAs. |
213 | ||
214 | =item B<-nosigs> | |
215 | ||
c4de074e | 216 | Don't try to verify the signatures on the message. |
e3775a33 DSH |
217 | |
218 | =item B<-nocerts> | |
219 | ||
c4de074e | 220 | When signing a message the signer's certificate is normally included |
e3775a33 DSH |
221 | with this option it is excluded. This will reduce the size of the |
222 | signed message but the verifier must have a copy of the signers certificate | |
223 | available locally (passed using the B<-certfile> option for example). | |
224 | ||
225 | =item B<-noattr> | |
226 | ||
c4de074e | 227 | Normally when a message is signed a set of attributes are included which |
e3775a33 DSH |
228 | include the signing time and supported symmetric algorithms. With this |
229 | option they are not included. | |
230 | ||
231 | =item B<-binary> | |
232 | ||
c4de074e | 233 | Normally the input message is converted to "canonical" format which is |
3fc9635e DSH |
234 | effectively using CR and LF as end of line: as required by the S/MIME |
235 | specification. When this option is present no translation occurs. This | |
236 | is useful when handling binary data which may not be in MIME format. | |
e3775a33 | 237 | |
2197494d DSH |
238 | =item B<-crlfeol> |
239 | ||
c4de074e | 240 | Normally the output file uses a single B<LF> as end of line. When this |
2197494d DSH |
241 | option is present B<CRLF> is used instead. |
242 | ||
e3775a33 DSH |
243 | =item B<-nodetach> |
244 | ||
c4de074e | 245 | When signing a message use opaque signing: this form is more resistant |
e3775a33 DSH |
246 | to translation by mail relays but it cannot be read by mail agents that |
247 | do not support S/MIME. Without this option cleartext signing with | |
248 | the MIME type multipart/signed is used. | |
249 | ||
e8769719 | 250 | =item B<-certfile> I<file> |
e3775a33 | 251 | |
c4de074e | 252 | Allows additional certificates to be specified. When signing these will |
e3775a33 DSH |
253 | be included with the message. When verifying these will be searched for |
254 | the signers certificates. The certificates should be in PEM format. | |
255 | ||
e8769719 | 256 | =item B<-signer> I<file> |
e3775a33 | 257 | |
c4de074e | 258 | A signing certificate when signing or resigning a message, this option can be |
d884c5ba DSH |
259 | used multiple times if more than one signer is required. If a message is being |
260 | verified then the signers certificates will be written to this file if the | |
261 | verification was successful. | |
e3775a33 | 262 | |
e8769719 | 263 | =item B<-recip> I<file> |
e3775a33 | 264 | |
c4de074e | 265 | The recipients certificate when decrypting a message. This certificate |
e3775a33 DSH |
266 | must match one of the recipients of the message or an error occurs. |
267 | ||
e8769719 | 268 | =item B<-inkey> I<file_or_id> |
e3775a33 | 269 | |
c4de074e | 270 | The private key to use when signing or decrypting. This must match the |
e3775a33 DSH |
271 | corresponding certificate. If this option is not specified then the |
272 | private key must be included in the certificate file specified with | |
d884c5ba DSH |
273 | the B<-recip> or B<-signer> file. When signing this option can be used |
274 | multiple times to specify successive keys. | |
48b53522 RS |
275 | If no engine is used, the argument is taken as a file; if an engine is |
276 | specified, the argument is given to the engine as a key identifier. | |
e3775a33 | 277 | |
e8769719 | 278 | =item B<-passin> I<arg> |
84b65340 | 279 | |
2f0ea936 | 280 | The private key password source. For more information about the format of I<arg> |
3a4e43de | 281 | see L<openssl(1)/Pass Phrase Options>. |
84b65340 | 282 | |
8dc57d76 | 283 | =item B<-to>, B<-from>, B<-subject> |
e3775a33 | 284 | |
c4de074e | 285 | The relevant mail headers. These are included outside the signed |
e3775a33 DSH |
286 | portion of a message so they may be included manually. If signing |
287 | then many S/MIME mail clients check the signers certificate's email | |
288 | address matches that specified in the From: address. | |
289 | ||
e42d84be | 290 | =item B<-attime>, B<-check_ss_sig>, B<-crl_check>, B<-crl_check_all>, |
d33def66 VD |
291 | B<-explicit_policy>, B<-extended_crl>, B<-ignore_critical>, B<-inhibit_any>, |
292 | B<-inhibit_map>, B<-no_alt_chains>, B<-partial_chain>, B<-policy>, | |
e42d84be | 293 | B<-policy_check>, B<-policy_print>, B<-purpose>, B<-suiteB_128>, |
d33def66 | 294 | B<-suiteB_128_only>, B<-suiteB_192>, B<-trusted_first>, B<-use_deltas>, |
fbb82a60 VD |
295 | B<-auth_level>, B<-verify_depth>, B<-verify_email>, B<-verify_hostname>, |
296 | B<-verify_ip>, B<-verify_name>, B<-x509_strict> | |
e5fa864f DSH |
297 | |
298 | Set various options of certificate chain verification. See | |
8bc93d2f | 299 | L<openssl-verify(1)> manual page for details. |
e5fa864f | 300 | |
9fcb9702 RS |
301 | {- $OpenSSL::safe::opt_trust_item -} |
302 | ||
303 | {- $OpenSSL::safe::opt_r_item -} | |
304 | ||
b1c0cc24 RL |
305 | =item I<cert.pem> ... |
306 | ||
307 | One or more certificates of message recipients, used when encrypting | |
308 | a message. | |
309 | ||
e3775a33 DSH |
310 | =back |
311 | ||
312 | =head1 NOTES | |
313 | ||
314 | The MIME message must be sent without any blank lines between the | |
315 | headers and the output. Some mail programs will automatically add | |
316 | a blank line. Piping the mail directly to sendmail is one way to | |
317 | achieve the correct format. | |
318 | ||
3fc9635e | 319 | The supplied message to be signed or encrypted must include the |
60250017 | 320 | necessary MIME headers or many S/MIME clients won't display it |
3fc9635e DSH |
321 | properly (if at all). You can use the B<-text> option to automatically |
322 | add plain text headers. | |
323 | ||
e3775a33 DSH |
324 | A "signed and encrypted" message is one where a signed message is |
325 | then encrypted. This can be produced by encrypting an already signed | |
3fc9635e | 326 | message: see the examples section. |
e3775a33 DSH |
327 | |
328 | This version of the program only allows one signer per message but it | |
329 | will verify multiple signers on received messages. Some S/MIME clients | |
19d2bb57 | 330 | choke if a message contains multiple signers. It is possible to sign |
e3775a33 DSH |
331 | messages "in parallel" by signing an already signed message. |
332 | ||
3fc9635e DSH |
333 | The options B<-encrypt> and B<-decrypt> reflect common usage in S/MIME |
334 | clients. Strictly speaking these process PKCS#7 enveloped data: PKCS#7 | |
335 | encrypted data is used for other purposes. | |
336 | ||
d884c5ba DSH |
337 | The B<-resign> option uses an existing message digest when adding a new |
338 | signer. This means that attributes must be present in at least one existing | |
339 | signer using the same message digest or this operation will fail. | |
340 | ||
e4ef2e25 | 341 | The B<-stream> and B<-indef> options enable streaming I/O support. |
76b46e77 DSH |
342 | As a result the encoding is BER using indefinite length constructed encoding |
343 | and no longer DER. Streaming is supported for the B<-encrypt> operation and the | |
344 | B<-sign> operation if the content is not detached. | |
345 | ||
346 | Streaming is always used for the B<-sign> operation with detached data but | |
347 | since the content is no longer part of the PKCS#7 structure the encoding | |
348 | remains DER. | |
349 | ||
e3775a33 DSH |
350 | =head1 EXIT CODES |
351 | ||
352 | =over 4 | |
353 | ||
c8919dde | 354 | =item Z<>0 |
e3775a33 | 355 | |
c4de074e | 356 | The operation was completely successfully. |
e3775a33 | 357 | |
c8919dde | 358 | =item Z<>1 |
e3775a33 | 359 | |
c4de074e | 360 | An error occurred parsing the command options. |
e3775a33 | 361 | |
c8919dde | 362 | =item Z<>2 |
e3775a33 | 363 | |
c4de074e | 364 | One of the input files could not be read. |
e3775a33 | 365 | |
c8919dde | 366 | =item Z<>3 |
e3775a33 | 367 | |
c4de074e | 368 | An error occurred creating the PKCS#7 file or when reading the MIME |
e3775a33 DSH |
369 | message. |
370 | ||
c8919dde | 371 | =item Z<>4 |
e3775a33 | 372 | |
c4de074e | 373 | An error occurred decrypting or verifying the message. |
e3775a33 | 374 | |
c8919dde | 375 | =item Z<>5 |
e3775a33 | 376 | |
c4de074e | 377 | The message was verified correctly but an error occurred writing out |
e3775a33 DSH |
378 | the signers certificates. |
379 | ||
380 | =back | |
381 | ||
382 | =head1 EXAMPLES | |
383 | ||
3fc9635e DSH |
384 | Create a cleartext signed message: |
385 | ||
1675f6eb | 386 | openssl smime -sign -in message.txt -text -out mail.msg \ |
1bc74519 | 387 | -signer mycert.pem |
3fc9635e | 388 | |
0d638dc1 | 389 | Create an opaque signed message: |
3fc9635e | 390 | |
1675f6eb | 391 | openssl smime -sign -in message.txt -text -out mail.msg -nodetach \ |
1bc74519 | 392 | -signer mycert.pem |
3fc9635e DSH |
393 | |
394 | Create a signed message, include some additional certificates and | |
395 | read the private key from another file: | |
396 | ||
1675f6eb | 397 | openssl smime -sign -in in.txt -text -out mail.msg \ |
1bc74519 | 398 | -signer mycert.pem -inkey mykey.pem -certfile mycerts.pem |
3fc9635e | 399 | |
d884c5ba DSH |
400 | Create a signed message with two signers: |
401 | ||
402 | openssl smime -sign -in message.txt -text -out mail.msg \ | |
1bc74519 | 403 | -signer mycert.pem -signer othercert.pem |
d884c5ba | 404 | |
3fc9635e DSH |
405 | Send a signed message under Unix directly to sendmail, including headers: |
406 | ||
1675f6eb | 407 | openssl smime -sign -in in.txt -text -signer mycert.pem \ |
1bc74519 RS |
408 | -from steve@openssl.org -to someone@somewhere \ |
409 | -subject "Signed message" | sendmail someone@somewhere | |
3fc9635e DSH |
410 | |
411 | Verify a message and extract the signer's certificate if successful: | |
412 | ||
413 | openssl smime -verify -in mail.msg -signer user.pem -out signedtext.txt | |
414 | ||
415 | Send encrypted mail using triple DES: | |
416 | ||
1675f6eb | 417 | openssl smime -encrypt -in in.txt -from steve@openssl.org \ |
1bc74519 RS |
418 | -to someone@somewhere -subject "Encrypted message" \ |
419 | -des3 user.pem -out mail.msg | |
3fc9635e DSH |
420 | |
421 | Sign and encrypt mail: | |
422 | ||
1675f6eb | 423 | openssl smime -sign -in ml.txt -signer my.pem -text \ |
1bc74519 RS |
424 | | openssl smime -encrypt -out mail.msg \ |
425 | -from steve@openssl.org -to someone@somewhere \ | |
426 | -subject "Signed and Encrypted message" -des3 user.pem | |
3fc9635e | 427 | |
d884c5ba DSH |
428 | Note: the encryption command does not include the B<-text> option because the |
429 | message being encrypted already has MIME headers. | |
3fc9635e DSH |
430 | |
431 | Decrypt mail: | |
432 | ||
433 | openssl smime -decrypt -in mail.msg -recip mycert.pem -inkey key.pem | |
434 | ||
fd13f0ee DSH |
435 | The output from Netscape form signing is a PKCS#7 structure with the |
436 | detached signature format. You can use this program to verify the | |
437 | signature by line wrapping the base64 encoded structure and surrounding | |
438 | it with: | |
439 | ||
a8c12555 DSH |
440 | -----BEGIN PKCS7----- |
441 | -----END PKCS7----- | |
fd13f0ee | 442 | |
1bc74519 | 443 | and using the command: |
fd13f0ee DSH |
444 | |
445 | openssl smime -verify -inform PEM -in signature.pem -content content.txt | |
446 | ||
0d638dc1 | 447 | Alternatively you can base64 decode the signature and use: |
fd13f0ee DSH |
448 | |
449 | openssl smime -verify -inform DER -in signature.der -content content.txt | |
450 | ||
f3dea9a5 BM |
451 | Create an encrypted message using 128 bit Camellia: |
452 | ||
453 | openssl smime -encrypt -in plain.txt -camellia128 -out mail.msg cert.pem | |
454 | ||
d884c5ba DSH |
455 | Add a signer to an existing message: |
456 | ||
457 | openssl smime -resign -in mail.msg -signer newsign.pem -out mail2.msg | |
458 | ||
3fc9635e DSH |
459 | =head1 BUGS |
460 | ||
d884c5ba DSH |
461 | The MIME parser isn't very clever: it seems to handle most messages that I've |
462 | thrown at it but it may choke on others. | |
3fc9635e | 463 | |
d884c5ba DSH |
464 | The code currently will only write out the signer's certificate to a file: if |
465 | the signer has a separate encryption certificate this must be manually | |
466 | extracted. There should be some heuristic that determines the correct | |
467 | encryption certificate. | |
3fc9635e | 468 | |
d884c5ba DSH |
469 | Ideally a database should be maintained of a certificates for each email |
470 | address. | |
3fc9635e DSH |
471 | |
472 | The code doesn't currently take note of the permitted symmetric encryption | |
7e0de9e8 | 473 | algorithms as supplied in the SMIMECapabilities signed attribute. This means the |
3fc9635e DSH |
474 | user has to manually include the correct encryption algorithm. It should store |
475 | the list of permitted ciphers in a database and only use those. | |
476 | ||
477 | No revocation checking is done on the signer's certificate. | |
478 | ||
479 | The current code can only handle S/MIME v2 messages, the more complex S/MIME v3 | |
480 | structures may cause parsing errors. | |
e3775a33 | 481 | |
fd3397fc RL |
482 | =head1 SEE ALSO |
483 | ||
484 | L<ossl_store-file(7)> | |
485 | ||
d884c5ba DSH |
486 | =head1 HISTORY |
487 | ||
488 | The use of multiple B<-signer> options and the B<-resign> command were first | |
fb552ac6 | 489 | added in OpenSSL 1.0.0 |
d884c5ba | 490 | |
fc5ecadd | 491 | The -no_alt_chains option was added in OpenSSL 1.1.0. |
d884c5ba | 492 | |
e2f92610 RS |
493 | =head1 COPYRIGHT |
494 | ||
b6b66573 | 495 | Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved. |
e2f92610 | 496 | |
449040b4 | 497 | Licensed under the Apache License 2.0 (the "License"). You may not use |
e2f92610 RS |
498 | this file except in compliance with the License. You can obtain a copy |
499 | in the file LICENSE in the source distribution or at | |
500 | L<https://www.openssl.org/source/license.html>. | |
501 | ||
502 | =cut |