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Commit | Line | Data |
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e3775a33 | 1 | =pod |
625c781d | 2 | {- OpenSSL::safe::output_do_not_edit_headers(); -} |
9fcb9702 | 3 | |
e3775a33 DSH |
4 | =head1 NAME |
5 | ||
4b537191 | 6 | openssl-smime - S/MIME command |
e3775a33 DSH |
7 | |
8 | =head1 SYNOPSIS | |
9 | ||
10 | B<openssl> B<smime> | |
169394d4 | 11 | [B<-help>] |
e3775a33 DSH |
12 | [B<-encrypt>] |
13 | [B<-decrypt>] | |
14 | [B<-sign>] | |
d884c5ba | 15 | [B<-resign>] |
e3775a33 DSH |
16 | [B<-verify>] |
17 | [B<-pk7out>] | |
2197494d DSH |
18 | [B<-binary>] |
19 | [B<-crlfeol>] | |
8dc57d76 | 20 | [B<-I<cipher>>] |
e8769719 | 21 | [B<-in> I<file>] |
e8769719 RS |
22 | [B<-certfile> I<file>] |
23 | [B<-signer> I<file>] | |
65718c51 RS |
24 | [B<-nointern>] |
25 | [B<-noverify>] | |
26 | [B<-nochain>] | |
27 | [B<-nosigs>] | |
28 | [B<-nocerts>] | |
29 | [B<-noattr>] | |
30 | [B<-nodetach>] | |
31 | [B<-nosmimecap>] | |
e8769719 RS |
32 | [B<-recip> I< file>] |
33 | [B<-inform> B<DER>|B<PEM>|B<SMIME>] | |
777182a0 | 34 | [B<-outform> B<DER>|B<PEM>|B<SMIME>] |
6d382c74 | 35 | [B<-keyform> B<DER>|B<PEM>|B<P12>|B<ENGINE>] |
e8769719 | 36 | [B<-passin> I<arg>] |
f91d003a | 37 | [B<-inkey> I<filename>|I<uri>] |
e8769719 | 38 | [B<-out> I<file>] |
e8769719 RS |
39 | [B<-content> I<file>] |
40 | [B<-to> I<addr>] | |
41 | [B<-from> I<ad>] | |
42 | [B<-subject> I<s>] | |
e3775a33 | 43 | [B<-text>] |
76b46e77 DSH |
44 | [B<-indef>] |
45 | [B<-noindef>] | |
46 | [B<-stream>] | |
e8769719 | 47 | [B<-md> I<digest>] |
9fcb9702 | 48 | {- $OpenSSL::safe::opt_trust_synopsis -} |
d55e4487 | 49 | {- $OpenSSL::safe::opt_engine_synopsis -}{- $OpenSSL::safe::opt_r_synopsis -} |
21d08b9e | 50 | {- $OpenSSL::safe::opt_v_synopsis -} |
6bd4e3f2 | 51 | {- $OpenSSL::safe::opt_provider_synopsis -} |
90a1f2d7 | 52 | {- $OpenSSL::safe::opt_config_synopsis -} |
6d382c74 | 53 | I<recipcert> ... |
e3775a33 DSH |
54 | |
55 | =head1 DESCRIPTION | |
56 | ||
35a810bb RL |
57 | This command handles S/MIME mail. It can encrypt, decrypt, sign |
58 | and verify S/MIME messages. | |
e3775a33 | 59 | |
3dfda1a6 | 60 | =head1 OPTIONS |
e3775a33 | 61 | |
27861607 DDO |
62 | There are six operation options that set the type of operation to be performed: |
63 | B<-encrypt>, B<-decrypt>, B<-sign>, B<-resign>, B<-verify>, and B<-pk7out>. | |
64 | These are mutually exclusive. | |
e3775a33 DSH |
65 | The meaning of the other options varies according to the operation type. |
66 | ||
67 | =over 4 | |
68 | ||
169394d4 MR |
69 | =item B<-help> |
70 | ||
71 | Print out a usage message. | |
72 | ||
e3775a33 DSH |
73 | =item B<-encrypt> |
74 | ||
c4de074e | 75 | Encrypt mail for the given recipient certificates. Input file is the message |
e3775a33 DSH |
76 | to be encrypted. The output file is the encrypted mail in MIME format. |
77 | ||
2a9afa40 RS |
78 | Note that no revocation check is done for the recipient cert, so if that |
79 | key has been compromised, others may be able to decrypt the text. | |
80 | ||
e3775a33 DSH |
81 | =item B<-decrypt> |
82 | ||
c4de074e | 83 | Decrypt mail using the supplied certificate and private key. Expects an |
e3775a33 DSH |
84 | encrypted mail message in MIME format for the input file. The decrypted mail |
85 | is written to the output file. | |
86 | ||
87 | =item B<-sign> | |
88 | ||
c4de074e | 89 | Sign mail using the supplied certificate and private key. Input file is |
e3775a33 DSH |
90 | the message to be signed. The signed message in MIME format is written |
91 | to the output file. | |
92 | ||
27861607 DDO |
93 | =item B<-resign> |
94 | ||
95 | Resign a message: take an existing message and one or more new signers. | |
96 | ||
e3775a33 DSH |
97 | =item B<-verify> |
98 | ||
c4de074e | 99 | Verify signed mail. Expects a signed mail message on input and outputs |
e3775a33 DSH |
100 | the signed data. Both clear text and opaque signing is supported. |
101 | ||
102 | =item B<-pk7out> | |
103 | ||
c4de074e | 104 | Takes an input message and writes out a PEM encoded PKCS#7 structure. |
e3775a33 | 105 | |
e8769719 | 106 | =item B<-in> I<filename> |
e3775a33 | 107 | |
c4de074e | 108 | The input message to be encrypted or signed or the MIME message to |
e3775a33 DSH |
109 | be decrypted or verified. |
110 | ||
e8769719 | 111 | =item B<-out> I<filename> |
e3775a33 | 112 | |
c4de074e | 113 | The message text that has been decrypted or verified or the output MIME |
e3775a33 DSH |
114 | format message that has been signed or verified. |
115 | ||
777182a0 RS |
116 | =item B<-inform> B<DER>|B<PEM>|B<SMIME> |
117 | ||
118 | The input format of the PKCS#7 (S/MIME) structure (if one is being read); | |
119 | the default is B<SMIME>. | |
46949153 | 120 | See L<openssl-format-options(1)> for details. |
777182a0 | 121 | |
e8769719 | 122 | =item B<-outform> B<DER>|B<PEM>|B<SMIME> |
fd13f0ee | 123 | |
777182a0 RS |
124 | The output format of the PKCS#7 (S/MIME) structure (if one is being written); |
125 | the default is B<SMIME>. | |
46949153 | 126 | See L<openssl-format-options(1)> for details. |
777182a0 | 127 | |
6d382c74 | 128 | =item B<-keyform> B<DER>|B<PEM>|B<P12>|B<ENGINE> |
777182a0 | 129 | |
bee3f389 | 130 | The key format; unspecified by default. |
46949153 | 131 | See L<openssl-format-options(1)> for details. |
fd13f0ee | 132 | |
e8769719 | 133 | =item B<-stream>, B<-indef>, B<-noindef> |
76b46e77 | 134 | |
c4de074e | 135 | The B<-stream> and B<-indef> options are equivalent and enable streaming I/O |
76b46e77 DSH |
136 | for encoding operations. This permits single pass processing of data without |
137 | the need to hold the entire contents in memory, potentially supporting very | |
138 | large files. Streaming is automatically set for S/MIME signing with detached | |
139 | data if the output format is B<SMIME> it is currently off by default for all | |
140 | other operations. | |
141 | ||
142 | =item B<-noindef> | |
143 | ||
c4de074e | 144 | Disable streaming I/O where it would produce and indefinite length constructed |
76b46e77 DSH |
145 | encoding. This option currently has no effect. In future streaming will be |
146 | enabled by default on all relevant operations and this option will disable it. | |
147 | ||
e8769719 | 148 | =item B<-content> I<filename> |
fd13f0ee DSH |
149 | |
150 | This specifies a file containing the detached content, this is only | |
151 | useful with the B<-verify> command. This is only usable if the PKCS#7 | |
152 | structure is using the detached signature form where the content is | |
153 | not included. This option will override any content if the input format | |
154 | is S/MIME and it uses the multipart/signed MIME content type. | |
155 | ||
e3775a33 DSH |
156 | =item B<-text> |
157 | ||
c4de074e | 158 | This option adds plain text (text/plain) MIME headers to the supplied |
e3775a33 | 159 | message if encrypting or signing. If decrypting or verifying it strips |
1bc74519 | 160 | off text headers: if the decrypted or verified message is not of MIME |
e3775a33 DSH |
161 | type text/plain then an error occurs. |
162 | ||
e8769719 | 163 | =item B<-md> I<digest> |
d884c5ba | 164 | |
c4de074e | 165 | Digest algorithm to use when signing or resigning. If not present then the |
d884c5ba DSH |
166 | default digest algorithm for the signing key will be used (usually SHA1). |
167 | ||
8dc57d76 | 168 | =item B<-I<cipher>> |
e3775a33 | 169 | |
c4de074e | 170 | The encryption algorithm to use. For example DES (56 bits) - B<-des>, |
e5fa864f | 171 | triple DES (168 bits) - B<-des3>, |
1bc74519 | 172 | EVP_get_cipherbyname() function) can also be used preceded by a dash, for |
35a810bb | 173 | example B<-aes-128-cbc>. See L<openssl-enc(1)> for list of ciphers |
e5fa864f | 174 | supported by your version of OpenSSL. |
d884c5ba | 175 | |
6f719f06 | 176 | If not specified triple DES is used. Only used with B<-encrypt>. |
e3775a33 DSH |
177 | |
178 | =item B<-nointern> | |
179 | ||
c4de074e | 180 | When verifying a message normally certificates (if any) included in |
e3775a33 DSH |
181 | the message are searched for the signing certificate. With this option |
182 | only the certificates specified in the B<-certfile> option are used. | |
183 | The supplied certificates can still be used as untrusted CAs however. | |
184 | ||
185 | =item B<-noverify> | |
186 | ||
c4de074e | 187 | Do not verify the signers certificate of a signed message. |
e3775a33 DSH |
188 | |
189 | =item B<-nochain> | |
190 | ||
65718c51 | 191 | Do not do chain verification of signers certificates; that is, do not |
e3775a33 DSH |
192 | use the certificates in the signed message as untrusted CAs. |
193 | ||
194 | =item B<-nosigs> | |
195 | ||
c4de074e | 196 | Don't try to verify the signatures on the message. |
e3775a33 DSH |
197 | |
198 | =item B<-nocerts> | |
199 | ||
c4de074e | 200 | When signing a message the signer's certificate is normally included |
e3775a33 DSH |
201 | with this option it is excluded. This will reduce the size of the |
202 | signed message but the verifier must have a copy of the signers certificate | |
203 | available locally (passed using the B<-certfile> option for example). | |
204 | ||
205 | =item B<-noattr> | |
206 | ||
c4de074e | 207 | Normally when a message is signed a set of attributes are included which |
e3775a33 DSH |
208 | include the signing time and supported symmetric algorithms. With this |
209 | option they are not included. | |
210 | ||
65718c51 RS |
211 | =item B<-nodetach> |
212 | ||
213 | When signing a message use opaque signing. This form is more resistant | |
214 | to translation by mail relays but it cannot be read by mail agents that | |
215 | do not support S/MIME. Without this option cleartext signing with | |
216 | the MIME type multipart/signed is used. | |
217 | ||
218 | =item B<-nosmimecap> | |
219 | ||
220 | When signing a message, do not include the B<SMIMECapabilities> attribute. | |
221 | ||
e3775a33 DSH |
222 | =item B<-binary> |
223 | ||
c4de074e | 224 | Normally the input message is converted to "canonical" format which is |
3fc9635e DSH |
225 | effectively using CR and LF as end of line: as required by the S/MIME |
226 | specification. When this option is present no translation occurs. This | |
227 | is useful when handling binary data which may not be in MIME format. | |
e3775a33 | 228 | |
2197494d DSH |
229 | =item B<-crlfeol> |
230 | ||
c4de074e | 231 | Normally the output file uses a single B<LF> as end of line. When this |
2197494d DSH |
232 | option is present B<CRLF> is used instead. |
233 | ||
e8769719 | 234 | =item B<-certfile> I<file> |
e3775a33 | 235 | |
c4de074e | 236 | Allows additional certificates to be specified. When signing these will |
e3775a33 | 237 | be included with the message. When verifying these will be searched for |
6d382c74 | 238 | the signers certificates. |
b3c5aadf | 239 | The input can be in PEM, DER, or PKCS#12 format. |
e3775a33 | 240 | |
e8769719 | 241 | =item B<-signer> I<file> |
e3775a33 | 242 | |
c4de074e | 243 | A signing certificate when signing or resigning a message, this option can be |
d884c5ba DSH |
244 | used multiple times if more than one signer is required. If a message is being |
245 | verified then the signers certificates will be written to this file if the | |
246 | verification was successful. | |
e3775a33 | 247 | |
65718c51 RS |
248 | =item B<-nocerts> |
249 | ||
250 | Don't include signers certificate when signing. | |
251 | ||
252 | =item B<-noattr> | |
253 | ||
254 | Don't include any signed attributes when signing. | |
255 | ||
e8769719 | 256 | =item B<-recip> I<file> |
e3775a33 | 257 | |
c4de074e | 258 | The recipients certificate when decrypting a message. This certificate |
e3775a33 DSH |
259 | must match one of the recipients of the message or an error occurs. |
260 | ||
f91d003a | 261 | =item B<-inkey> I<filename>|I<uri> |
e3775a33 | 262 | |
c4de074e | 263 | The private key to use when signing or decrypting. This must match the |
e3775a33 DSH |
264 | corresponding certificate. If this option is not specified then the |
265 | private key must be included in the certificate file specified with | |
d884c5ba DSH |
266 | the B<-recip> or B<-signer> file. When signing this option can be used |
267 | multiple times to specify successive keys. | |
e3775a33 | 268 | |
e8769719 | 269 | =item B<-passin> I<arg> |
84b65340 | 270 | |
2f0ea936 | 271 | The private key password source. For more information about the format of I<arg> |
46949153 | 272 | see L<openssl-passphrase-options(1)>. |
84b65340 | 273 | |
8dc57d76 | 274 | =item B<-to>, B<-from>, B<-subject> |
e3775a33 | 275 | |
c4de074e | 276 | The relevant mail headers. These are included outside the signed |
e3775a33 DSH |
277 | portion of a message so they may be included manually. If signing |
278 | then many S/MIME mail clients check the signers certificate's email | |
279 | address matches that specified in the From: address. | |
280 | ||
21d08b9e | 281 | {- $OpenSSL::safe::opt_v_item -} |
e5fa864f | 282 | |
21d08b9e | 283 | Any verification errors cause the command to exit. |
e5fa864f | 284 | |
9fcb9702 RS |
285 | {- $OpenSSL::safe::opt_trust_item -} |
286 | ||
65718c51 RS |
287 | {- $OpenSSL::safe::opt_engine_item -} |
288 | ||
9fcb9702 RS |
289 | {- $OpenSSL::safe::opt_r_item -} |
290 | ||
6bd4e3f2 P |
291 | {- $OpenSSL::safe::opt_provider_item -} |
292 | ||
90a1f2d7 SL |
293 | {- $OpenSSL::safe::opt_config_item -} |
294 | ||
6d382c74 | 295 | =item I<recipcert> ... |
b1c0cc24 RL |
296 | |
297 | One or more certificates of message recipients, used when encrypting | |
298 | a message. | |
299 | ||
e3775a33 DSH |
300 | =back |
301 | ||
302 | =head1 NOTES | |
303 | ||
304 | The MIME message must be sent without any blank lines between the | |
305 | headers and the output. Some mail programs will automatically add | |
306 | a blank line. Piping the mail directly to sendmail is one way to | |
307 | achieve the correct format. | |
308 | ||
3fc9635e | 309 | The supplied message to be signed or encrypted must include the |
60250017 | 310 | necessary MIME headers or many S/MIME clients won't display it |
3fc9635e DSH |
311 | properly (if at all). You can use the B<-text> option to automatically |
312 | add plain text headers. | |
313 | ||
e3775a33 DSH |
314 | A "signed and encrypted" message is one where a signed message is |
315 | then encrypted. This can be produced by encrypting an already signed | |
3fc9635e | 316 | message: see the examples section. |
e3775a33 DSH |
317 | |
318 | This version of the program only allows one signer per message but it | |
319 | will verify multiple signers on received messages. Some S/MIME clients | |
19d2bb57 | 320 | choke if a message contains multiple signers. It is possible to sign |
e3775a33 DSH |
321 | messages "in parallel" by signing an already signed message. |
322 | ||
3fc9635e DSH |
323 | The options B<-encrypt> and B<-decrypt> reflect common usage in S/MIME |
324 | clients. Strictly speaking these process PKCS#7 enveloped data: PKCS#7 | |
325 | encrypted data is used for other purposes. | |
326 | ||
d884c5ba DSH |
327 | The B<-resign> option uses an existing message digest when adding a new |
328 | signer. This means that attributes must be present in at least one existing | |
329 | signer using the same message digest or this operation will fail. | |
330 | ||
e4ef2e25 | 331 | The B<-stream> and B<-indef> options enable streaming I/O support. |
76b46e77 DSH |
332 | As a result the encoding is BER using indefinite length constructed encoding |
333 | and no longer DER. Streaming is supported for the B<-encrypt> operation and the | |
334 | B<-sign> operation if the content is not detached. | |
335 | ||
336 | Streaming is always used for the B<-sign> operation with detached data but | |
337 | since the content is no longer part of the PKCS#7 structure the encoding | |
338 | remains DER. | |
339 | ||
e3775a33 DSH |
340 | =head1 EXIT CODES |
341 | ||
342 | =over 4 | |
343 | ||
c8919dde | 344 | =item Z<>0 |
e3775a33 | 345 | |
c4de074e | 346 | The operation was completely successfully. |
e3775a33 | 347 | |
c8919dde | 348 | =item Z<>1 |
e3775a33 | 349 | |
c4de074e | 350 | An error occurred parsing the command options. |
e3775a33 | 351 | |
c8919dde | 352 | =item Z<>2 |
e3775a33 | 353 | |
c4de074e | 354 | One of the input files could not be read. |
e3775a33 | 355 | |
c8919dde | 356 | =item Z<>3 |
e3775a33 | 357 | |
c4de074e | 358 | An error occurred creating the PKCS#7 file or when reading the MIME |
e3775a33 DSH |
359 | message. |
360 | ||
c8919dde | 361 | =item Z<>4 |
e3775a33 | 362 | |
c4de074e | 363 | An error occurred decrypting or verifying the message. |
e3775a33 | 364 | |
c8919dde | 365 | =item Z<>5 |
e3775a33 | 366 | |
c4de074e | 367 | The message was verified correctly but an error occurred writing out |
e3775a33 DSH |
368 | the signers certificates. |
369 | ||
370 | =back | |
371 | ||
372 | =head1 EXAMPLES | |
373 | ||
3fc9635e DSH |
374 | Create a cleartext signed message: |
375 | ||
1675f6eb | 376 | openssl smime -sign -in message.txt -text -out mail.msg \ |
1bc74519 | 377 | -signer mycert.pem |
3fc9635e | 378 | |
0d638dc1 | 379 | Create an opaque signed message: |
3fc9635e | 380 | |
1675f6eb | 381 | openssl smime -sign -in message.txt -text -out mail.msg -nodetach \ |
1bc74519 | 382 | -signer mycert.pem |
3fc9635e DSH |
383 | |
384 | Create a signed message, include some additional certificates and | |
385 | read the private key from another file: | |
386 | ||
1675f6eb | 387 | openssl smime -sign -in in.txt -text -out mail.msg \ |
1bc74519 | 388 | -signer mycert.pem -inkey mykey.pem -certfile mycerts.pem |
3fc9635e | 389 | |
d884c5ba DSH |
390 | Create a signed message with two signers: |
391 | ||
392 | openssl smime -sign -in message.txt -text -out mail.msg \ | |
1bc74519 | 393 | -signer mycert.pem -signer othercert.pem |
d884c5ba | 394 | |
3fc9635e DSH |
395 | Send a signed message under Unix directly to sendmail, including headers: |
396 | ||
1675f6eb | 397 | openssl smime -sign -in in.txt -text -signer mycert.pem \ |
1bc74519 RS |
398 | -from steve@openssl.org -to someone@somewhere \ |
399 | -subject "Signed message" | sendmail someone@somewhere | |
3fc9635e DSH |
400 | |
401 | Verify a message and extract the signer's certificate if successful: | |
402 | ||
403 | openssl smime -verify -in mail.msg -signer user.pem -out signedtext.txt | |
404 | ||
405 | Send encrypted mail using triple DES: | |
406 | ||
1675f6eb | 407 | openssl smime -encrypt -in in.txt -from steve@openssl.org \ |
1bc74519 RS |
408 | -to someone@somewhere -subject "Encrypted message" \ |
409 | -des3 user.pem -out mail.msg | |
3fc9635e DSH |
410 | |
411 | Sign and encrypt mail: | |
412 | ||
1675f6eb | 413 | openssl smime -sign -in ml.txt -signer my.pem -text \ |
1bc74519 RS |
414 | | openssl smime -encrypt -out mail.msg \ |
415 | -from steve@openssl.org -to someone@somewhere \ | |
416 | -subject "Signed and Encrypted message" -des3 user.pem | |
3fc9635e | 417 | |
d884c5ba DSH |
418 | Note: the encryption command does not include the B<-text> option because the |
419 | message being encrypted already has MIME headers. | |
3fc9635e DSH |
420 | |
421 | Decrypt mail: | |
422 | ||
423 | openssl smime -decrypt -in mail.msg -recip mycert.pem -inkey key.pem | |
424 | ||
fd13f0ee DSH |
425 | The output from Netscape form signing is a PKCS#7 structure with the |
426 | detached signature format. You can use this program to verify the | |
427 | signature by line wrapping the base64 encoded structure and surrounding | |
428 | it with: | |
429 | ||
a8c12555 DSH |
430 | -----BEGIN PKCS7----- |
431 | -----END PKCS7----- | |
fd13f0ee | 432 | |
1bc74519 | 433 | and using the command: |
fd13f0ee DSH |
434 | |
435 | openssl smime -verify -inform PEM -in signature.pem -content content.txt | |
436 | ||
0d638dc1 | 437 | Alternatively you can base64 decode the signature and use: |
fd13f0ee DSH |
438 | |
439 | openssl smime -verify -inform DER -in signature.der -content content.txt | |
440 | ||
f3dea9a5 BM |
441 | Create an encrypted message using 128 bit Camellia: |
442 | ||
443 | openssl smime -encrypt -in plain.txt -camellia128 -out mail.msg cert.pem | |
444 | ||
d884c5ba DSH |
445 | Add a signer to an existing message: |
446 | ||
447 | openssl smime -resign -in mail.msg -signer newsign.pem -out mail2.msg | |
448 | ||
3fc9635e DSH |
449 | =head1 BUGS |
450 | ||
d884c5ba DSH |
451 | The MIME parser isn't very clever: it seems to handle most messages that I've |
452 | thrown at it but it may choke on others. | |
3fc9635e | 453 | |
d884c5ba DSH |
454 | The code currently will only write out the signer's certificate to a file: if |
455 | the signer has a separate encryption certificate this must be manually | |
456 | extracted. There should be some heuristic that determines the correct | |
457 | encryption certificate. | |
3fc9635e | 458 | |
d884c5ba DSH |
459 | Ideally a database should be maintained of a certificates for each email |
460 | address. | |
3fc9635e DSH |
461 | |
462 | The code doesn't currently take note of the permitted symmetric encryption | |
7e0de9e8 | 463 | algorithms as supplied in the SMIMECapabilities signed attribute. This means the |
3fc9635e DSH |
464 | user has to manually include the correct encryption algorithm. It should store |
465 | the list of permitted ciphers in a database and only use those. | |
466 | ||
467 | No revocation checking is done on the signer's certificate. | |
468 | ||
469 | The current code can only handle S/MIME v2 messages, the more complex S/MIME v3 | |
470 | structures may cause parsing errors. | |
e3775a33 | 471 | |
fd3397fc RL |
472 | =head1 SEE ALSO |
473 | ||
474 | L<ossl_store-file(7)> | |
475 | ||
d884c5ba DSH |
476 | =head1 HISTORY |
477 | ||
478 | The use of multiple B<-signer> options and the B<-resign> command were first | |
fb552ac6 | 479 | added in OpenSSL 1.0.0 |
d884c5ba | 480 | |
fc5ecadd | 481 | The -no_alt_chains option was added in OpenSSL 1.1.0. |
d884c5ba | 482 | |
0f221d9c P |
483 | The B<-engine> option was deprecated in OpenSSL 3.0. |
484 | ||
e2f92610 RS |
485 | =head1 COPYRIGHT |
486 | ||
da1c088f | 487 | Copyright 2000-2023 The OpenSSL Project Authors. All Rights Reserved. |
e2f92610 | 488 | |
449040b4 | 489 | Licensed under the Apache License 2.0 (the "License"). You may not use |
e2f92610 RS |
490 | this file except in compliance with the License. You can obtain a copy |
491 | in the file LICENSE in the source distribution or at | |
492 | L<https://www.openssl.org/source/license.html>. | |
493 | ||
494 | =cut |