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Commit | Line | Data |
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3cbe1980 DSH |
1 | =pod |
2 | ||
3 | =head1 NAME | |
4 | ||
37842dfa AS |
5 | EVP_MD_CTX_new, EVP_MD_CTX_reset, EVP_MD_CTX_free, EVP_MD_CTX_copy, |
6 | EVP_MD_CTX_copy_ex, EVP_MD_CTX_ctrl, EVP_MD_CTX_set_flags, | |
7 | EVP_MD_CTX_clear_flags, EVP_MD_CTX_test_flags, | |
8 | EVP_Digest, EVP_DigestInit_ex, EVP_DigestInit, EVP_DigestUpdate, | |
cd8d1456 | 9 | EVP_DigestFinal_ex, EVP_DigestFinalXOF, EVP_DigestFinal, |
37842dfa AS |
10 | EVP_MD_type, EVP_MD_pkey_type, EVP_MD_size, EVP_MD_block_size, EVP_MD_flags, |
11 | EVP_MD_CTX_md, EVP_MD_CTX_type, EVP_MD_CTX_size, EVP_MD_CTX_block_size, | |
12 | EVP_MD_CTX_md_data, EVP_MD_CTX_update_fn, EVP_MD_CTX_set_update_fn, | |
a9cf71a3 | 13 | EVP_md_null, |
37842dfa AS |
14 | EVP_get_digestbyname, EVP_get_digestbynid, EVP_get_digestbyobj, |
15 | EVP_MD_CTX_pkey_ctx, EVP_MD_CTX_set_pkey_ctx - EVP digest routines | |
3cbe1980 DSH |
16 | |
17 | =head1 SYNOPSIS | |
18 | ||
19 | #include <openssl/evp.h> | |
20 | ||
25191fff RL |
21 | EVP_MD_CTX *EVP_MD_CTX_new(void); |
22 | int EVP_MD_CTX_reset(EVP_MD_CTX *ctx); | |
23 | void EVP_MD_CTX_free(EVP_MD_CTX *ctx); | |
52ad5b60 | 24 | void EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int cmd, int p1, void* p2); |
a9cf71a3 RL |
25 | void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags); |
26 | void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags); | |
27 | int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags); | |
e72d734d | 28 | |
37842dfa AS |
29 | int EVP_Digest(const void *data, size_t count, unsigned char *md, |
30 | unsigned int *size, const EVP_MD *type, ENGINE *impl); | |
e72d734d | 31 | int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl); |
109d3123 | 32 | int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *d, size_t cnt); |
e9b77246 | 33 | int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s); |
cd8d1456 | 34 | int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, unsigned char *md, size_t len); |
e72d734d | 35 | |
aebb9aac | 36 | int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in); |
e72d734d DSH |
37 | |
38 | int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type); | |
e9b77246 | 39 | int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s); |
3cbe1980 | 40 | |
aebb9aac | 41 | int EVP_MD_CTX_copy(EVP_MD_CTX *out, EVP_MD_CTX *in); |
e72d734d | 42 | |
5a34fcd7 | 43 | int EVP_MD_type(const EVP_MD *md); |
05ea606a | 44 | int EVP_MD_pkey_type(const EVP_MD *md); |
5a34fcd7 DSH |
45 | int EVP_MD_size(const EVP_MD *md); |
46 | int EVP_MD_block_size(const EVP_MD *md); | |
37842dfa | 47 | unsigned long EVP_MD_flags(const EVP_MD *md); |
3cbe1980 | 48 | |
5a34fcd7 | 49 | const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx); |
25191fff RL |
50 | int EVP_MD_CTX_size(const EVP_MD *ctx); |
51 | int EVP_MD_CTX_block_size(const EVP_MD *ctx); | |
52 | int EVP_MD_CTX_type(const EVP_MD *ctx); | |
a9cf71a3 | 53 | void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx); |
37842dfa AS |
54 | int (*EVP_MD_CTX_update_fn(EVP_MD_CTX *ctx))(EVP_MD_CTX *ctx, |
55 | const void *data, size_t count); | |
56 | void EVP_MD_CTX_set_update_fn(EVP_MD_CTX *ctx, | |
57 | int (*update)(EVP_MD_CTX *ctx, | |
58 | const void *data, size_t count)); | |
3cbe1980 | 59 | |
13588350 | 60 | const EVP_MD *EVP_md_null(void); |
e4adad92 | 61 | |
3cbe1980 | 62 | const EVP_MD *EVP_get_digestbyname(const char *name); |
25191fff RL |
63 | const EVP_MD *EVP_get_digestbynid(int type); |
64 | const EVP_MD *EVP_get_digestbyobj(const ASN1_OBJECT *o); | |
3cbe1980 | 65 | |
37842dfa | 66 | EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx); |
675f4cee PY |
67 | void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx); |
68 | ||
3cbe1980 DSH |
69 | =head1 DESCRIPTION |
70 | ||
c7497f34 RS |
71 | The EVP digest routines are a high level interface to message digests, |
72 | and should be used instead of the cipher-specific functions. | |
3cbe1980 | 73 | |
bbda8ce9 | 74 | =over 4 |
25191fff | 75 | |
bbda8ce9 | 76 | =item EVP_MD_CTX_new() |
e72d734d | 77 | |
b45497c3 | 78 | Allocates and returns a digest context. |
e72d734d | 79 | |
bbda8ce9 | 80 | =item EVP_MD_CTX_reset() |
52ad5b60 | 81 | |
bbda8ce9 RT |
82 | Resets the digest context B<ctx>. This can be used to reuse an already |
83 | existing context. | |
3cbe1980 | 84 | |
bbda8ce9 | 85 | =item EVP_MD_CTX_free() |
3cbe1980 | 86 | |
bbda8ce9 | 87 | Cleans up digest context B<ctx> and frees up the space allocated to it. |
3cbe1980 | 88 | |
bbda8ce9 RT |
89 | =item EVP_MD_CTX_ctrl() |
90 | ||
37842dfa AS |
91 | Performs digest-specific control actions on context B<ctx>. The control command |
92 | is indicated in B<cmd> and any additional arguments in B<p1> and B<p2>. | |
93 | EVP_MD_CTX_ctrl() must be called after EVP_DigestInit_ex(). Other restrictions | |
94 | may apply depending on the control type and digest implementation. | |
95 | See L</CONTROLS> below for more information. | |
bbda8ce9 | 96 | |
a9cf71a3 RL |
97 | =item EVP_MD_CTX_set_flags(), EVP_MD_CTX_clear_flags(), EVP_MD_CTX_test_flags() |
98 | ||
99 | Sets, clears and tests B<ctx> flags. See L</FLAGS> below for more information. | |
100 | ||
37842dfa AS |
101 | =item EVP_Digest() |
102 | ||
103 | A wrapper around the Digest Init_ex, Update and Final_ex functions. | |
104 | Hashes B<count> bytes of data at B<data> using a digest B<type> from ENGINE | |
105 | B<impl>. The digest value is placed in B<md> and its length is written at B<size> | |
106 | if the pointer is not NULL. At most B<EVP_MAX_MD_SIZE> bytes will be written. | |
107 | If B<impl> is NULL the default implementation of digest B<type> is used. | |
108 | ||
bbda8ce9 RT |
109 | =item EVP_DigestInit_ex() |
110 | ||
111 | Sets up digest context B<ctx> to use a digest B<type> from ENGINE B<impl>. | |
b45497c3 P |
112 | B<type> will typically be supplied by a function such as EVP_sha1(). If |
113 | B<impl> is NULL then the default implementation of digest B<type> is used. | |
bbda8ce9 RT |
114 | |
115 | =item EVP_DigestUpdate() | |
116 | ||
117 | Hashes B<cnt> bytes of data at B<d> into the digest context B<ctx>. This | |
118 | function can be called several times on the same B<ctx> to hash additional | |
119 | data. | |
120 | ||
121 | =item EVP_DigestFinal_ex() | |
122 | ||
123 | Retrieves the digest value from B<ctx> and places it in B<md>. If the B<s> | |
124 | parameter is not NULL then the number of bytes of data written (i.e. the | |
125 | length of the digest) will be written to the integer at B<s>, at most | |
126 | B<EVP_MAX_MD_SIZE> bytes will be written. After calling EVP_DigestFinal_ex() | |
cd8d1456 | 127 | no additional calls to EVP_DigestUpdate() can be made, but |
bbda8ce9 RT |
128 | EVP_DigestInit_ex() can be called to initialize a new digest operation. |
129 | ||
130 | =item EVP_DigestFinalXOF() | |
131 | ||
132 | Interfaces to extendable-output functions, XOFs, such as SHAKE128 and SHAKE256. | |
133 | It retrieves the digest value from B<ctx> and places it in B<len>-sized <B>md. | |
134 | After calling this function no additional calls to EVP_DigestUpdate() can be | |
135 | made, but EVP_DigestInit_ex() can be called to initialize a new operation. | |
136 | ||
137 | =item EVP_MD_CTX_copy_ex() | |
138 | ||
139 | Can be used to copy the message digest state from B<in> to B<out>. This is | |
140 | useful if large amounts of data are to be hashed which only differ in the last | |
b45497c3 | 141 | few bytes. |
bbda8ce9 RT |
142 | |
143 | =item EVP_DigestInit() | |
144 | ||
b45497c3 P |
145 | Behaves in the same way as EVP_DigestInit_ex() except it always uses the |
146 | default digest implementation. | |
bbda8ce9 RT |
147 | |
148 | =item EVP_DigestFinal() | |
149 | ||
150 | Similar to EVP_DigestFinal_ex() except the digest context B<ctx> is | |
151 | automatically cleaned up. | |
152 | ||
153 | =item EVP_MD_CTX_copy() | |
cd8d1456 | 154 | |
bbda8ce9 RT |
155 | Similar to EVP_MD_CTX_copy_ex() except the destination B<out> does not have to |
156 | be initialized. | |
e72d734d | 157 | |
bbda8ce9 RT |
158 | =item EVP_MD_size(), |
159 | EVP_MD_CTX_size() | |
e72d734d | 160 | |
bbda8ce9 RT |
161 | Return the size of the message digest when passed an B<EVP_MD> or an |
162 | B<EVP_MD_CTX> structure, i.e. the size of the hash. | |
e72d734d | 163 | |
bbda8ce9 RT |
164 | =item EVP_MD_block_size(), |
165 | EVP_MD_CTX_block_size() | |
3cbe1980 | 166 | |
bbda8ce9 RT |
167 | Return the block size of the message digest when passed an B<EVP_MD> or an |
168 | B<EVP_MD_CTX> structure. | |
3cbe1980 | 169 | |
bbda8ce9 RT |
170 | =item EVP_MD_type(), |
171 | EVP_MD_CTX_type() | |
3cbe1980 | 172 | |
bbda8ce9 RT |
173 | Return the NID of the OBJECT IDENTIFIER representing the given message digest |
174 | when passed an B<EVP_MD> structure. For example, C<EVP_MD_type(EVP_sha1())> | |
175 | returns B<NID_sha1>. This function is normally used when setting ASN1 OIDs. | |
3cbe1980 | 176 | |
a9cf71a3 RL |
177 | =item EVP_MD_CTX_md_data() |
178 | ||
179 | Return the digest method private data for the passed B<EVP_MD_CTX>. | |
180 | The space is allocated by OpenSSL and has the size originally set with | |
181 | EVP_MD_meth_set_app_datasize(). | |
182 | ||
bbda8ce9 | 183 | =item EVP_MD_CTX_md() |
3cbe1980 | 184 | |
bbda8ce9 | 185 | Returns the B<EVP_MD> structure corresponding to the passed B<EVP_MD_CTX>. |
3cbe1980 | 186 | |
37842dfa AS |
187 | =item EVP_MD_CTX_set_update_fn() |
188 | ||
189 | Sets the update function for B<ctx> to B<update>. | |
190 | This is the function that is called by EVP_DigestUpdate. If not set, the | |
191 | update function from the B<EVP_MD> type specified at initialization is used. | |
192 | ||
193 | =item EVP_MD_CTX_update_fn() | |
194 | ||
195 | Returns the update function for B<ctx>. | |
196 | ||
197 | =item EVP_MD_flags() | |
198 | ||
199 | Returns the B<md> flags. Note that these are different from the B<EVP_MD_CTX> | |
200 | ones. See L<EVP_MD_meth_set_flags(3)> for more information. | |
201 | ||
bbda8ce9 | 202 | =item EVP_MD_pkey_type() |
3cbe1980 | 203 | |
bbda8ce9 RT |
204 | Returns the NID of the public key signing algorithm associated with this |
205 | digest. For example EVP_sha1() is associated with RSA so this will return | |
206 | B<NID_sha1WithRSAEncryption>. Since digests and signature algorithms are no | |
207 | longer linked this function is only retained for compatibility reasons. | |
3cbe1980 | 208 | |
bbda8ce9 RT |
209 | =item EVP_md_null() |
210 | ||
211 | A "null" message digest that does nothing: i.e. the hash it returns is of zero | |
212 | length. | |
213 | ||
214 | =item EVP_get_digestbyname(), | |
215 | EVP_get_digestbynid(), | |
216 | EVP_get_digestbyobj() | |
217 | ||
218 | Returns an B<EVP_MD> structure when passed a digest name, a digest B<NID> or an | |
219 | B<ASN1_OBJECT> structure respectively. | |
220 | ||
37842dfa AS |
221 | =item EVP_MD_CTX_pkey_ctx() |
222 | ||
223 | Returns the B<EVP_PKEY_CTX> assigned to B<ctx>. The returned pointer should not | |
224 | be freed by the caller. | |
225 | ||
675f4cee PY |
226 | =item EVP_MD_CTX_set_pkey_ctx() |
227 | ||
228 | Assigns an B<EVP_PKEY_CTX> to B<EVP_MD_CTX>. This is usually used to provide | |
37842dfa | 229 | a customized B<EVP_PKEY_CTX> to L<EVP_DigestSignInit(3)> or |
81c79453 | 230 | L<EVP_DigestVerifyInit(3)>. The B<pctx> passed to this function should be freed |
f922dac8 | 231 | by the caller. A NULL B<pctx> pointer is also allowed to clear the B<EVP_PKEY_CTX> |
81c79453 PY |
232 | assigned to B<ctx>. In such case, freeing the cleared B<EVP_PKEY_CTX> or not |
233 | depends on how the B<EVP_PKEY_CTX> is created. | |
675f4cee | 234 | |
bbda8ce9 | 235 | =back |
3cbe1980 | 236 | |
37842dfa AS |
237 | =head1 CONTROLS |
238 | ||
239 | EVP_MD_CTX_ctrl() can be used to send the following standard controls: | |
240 | ||
241 | =over 4 | |
242 | ||
243 | =item EVP_MD_CTRL_MICALG | |
244 | ||
245 | Gets the digest Message Integrity Check algorithm string. This is used when | |
246 | creating S/MIME multipart/signed messages, as specified in RFC 3851. | |
247 | The string value is written to B<p2>. | |
248 | ||
249 | =item EVP_MD_CTRL_XOF_LEN | |
250 | ||
251 | This control sets the digest length for extendable output functions to B<p1>. | |
252 | Sending this control directly should not be necessary, the use of | |
253 | C<EVP_DigestFinalXOF()> is preferred. | |
254 | Currently used by SHAKE. | |
255 | ||
256 | =back | |
257 | ||
a9cf71a3 RL |
258 | =head1 FLAGS |
259 | ||
260 | EVP_MD_CTX_set_flags(), EVP_MD_CTX_clear_flags() and EVP_MD_CTX_test_flags() | |
261 | can be used the manipulate and test these B<EVP_MD_CTX> flags: | |
262 | ||
263 | =over 4 | |
264 | ||
265 | =item EVP_MD_CTX_FLAG_ONESHOT | |
266 | ||
267 | This flag instructs the digest to optimize for one update only, if possible. | |
268 | ||
269 | =for comment EVP_MD_CTX_FLAG_CLEANED is internal, don't mention it | |
270 | ||
271 | =for comment EVP_MD_CTX_FLAG_REUSE is internal, don't mention it | |
272 | ||
273 | =for comment We currently avoid documenting flags that are only bit holder: | |
274 | EVP_MD_CTX_FLAG_NON_FIPS_ALLOW, EVP_MD_CTX_FLAGS_PAD_* | |
275 | ||
276 | =item EVP_MD_CTX_FLAG_NO_INIT | |
277 | ||
278 | This flag instructs EVP_DigestInit() and similar not to initialise the | |
279 | implementation specific data. | |
280 | ||
281 | =item EVP_MD_CTX_FLAG_FINALISE | |
282 | ||
283 | Some functions such as EVP_DigestSign only finalise copies of internal | |
284 | contexts so additional data can be included after the finalisation call. | |
285 | This is inefficient if this functionality is not required, and can be | |
286 | disabled with this flag. | |
287 | ||
288 | =back | |
289 | ||
3cbe1980 DSH |
290 | =head1 RETURN VALUES |
291 | ||
bbda8ce9 RT |
292 | =over 4 |
293 | ||
294 | =item EVP_DigestInit_ex(), | |
295 | EVP_DigestUpdate(), | |
296 | EVP_DigestFinal_ex() | |
297 | ||
298 | Returns 1 for | |
13588350 | 299 | success and 0 for failure. |
3cbe1980 | 300 | |
bbda8ce9 RT |
301 | =item EVP_MD_CTX_ctrl() |
302 | ||
303 | Returns 1 if successful or 0 for failure. | |
304 | ||
305 | =item EVP_MD_CTX_copy_ex() | |
52ad5b60 | 306 | |
bbda8ce9 | 307 | Returns 1 if successful or 0 for failure. |
3cbe1980 | 308 | |
bbda8ce9 | 309 | =item EVP_MD_type(), |
37842dfa | 310 | EVP_MD_pkey_type() |
3cbe1980 | 311 | |
bbda8ce9 RT |
312 | Returns the NID of the corresponding OBJECT IDENTIFIER or NID_undef if none |
313 | exists. | |
3cbe1980 | 314 | |
bbda8ce9 RT |
315 | =item EVP_MD_size(), |
316 | EVP_MD_block_size(), | |
317 | EVP_MD_CTX_size(), | |
318 | EVP_MD_CTX_block_size() | |
3cbe1980 | 319 | |
bbda8ce9 RT |
320 | Returns the digest or block size in bytes. |
321 | ||
322 | =item EVP_md_null() | |
323 | ||
324 | Returns a pointer to the B<EVP_MD> structure of the "null" message digest. | |
325 | ||
326 | =item EVP_get_digestbyname(), | |
327 | EVP_get_digestbynid(), | |
328 | EVP_get_digestbyobj() | |
329 | ||
330 | Returns either an B<EVP_MD> structure or NULL if an error occurs. | |
331 | ||
675f4cee PY |
332 | =item EVP_MD_CTX_set_pkey_ctx() |
333 | ||
334 | This function has no return value. | |
335 | ||
bbda8ce9 | 336 | =back |
3cbe1980 DSH |
337 | |
338 | =head1 NOTES | |
339 | ||
340 | The B<EVP> interface to message digests should almost always be used in | |
341 | preference to the low level interfaces. This is because the code then becomes | |
342 | transparent to the digest used and much more flexible. | |
343 | ||
bbda8ce9 | 344 | New applications should use the SHA-2 (such as L<EVP_sha256(3)>) or the SHA-3 |
89f66fe2 | 345 | digest algorithms (such as L<EVP_sha3_512(3)>). The other digest algorithms |
346 | are still in common use. | |
3cbe1980 | 347 | |
e72d734d DSH |
348 | For most applications the B<impl> parameter to EVP_DigestInit_ex() will be |
349 | set to NULL to use the default digest implementation. | |
350 | ||
7b3e11c5 | 351 | The functions EVP_DigestInit(), EVP_DigestFinal() and EVP_MD_CTX_copy() are |
e72d734d | 352 | obsolete but are retained to maintain compatibility with existing code. New |
7b3e11c5 | 353 | applications should use EVP_DigestInit_ex(), EVP_DigestFinal_ex() and |
e72d734d DSH |
354 | EVP_MD_CTX_copy_ex() because they can efficiently reuse a digest context |
355 | instead of initializing and cleaning it up on each call and allow non default | |
356 | implementations of digests to be specified. | |
357 | ||
fa332bba | 358 | If digest contexts are not cleaned up after use, |
7b3e11c5 | 359 | memory leaks will occur. |
13588350 | 360 | |
25191fff RL |
361 | EVP_MD_CTX_size(), EVP_MD_CTX_block_size(), EVP_MD_CTX_type(), |
362 | EVP_get_digestbynid() and EVP_get_digestbyobj() are defined as | |
363 | macros. | |
5a34fcd7 | 364 | |
52ad5b60 TS |
365 | EVP_MD_CTX_ctrl() sends commands to message digests for additional configuration |
366 | or control. | |
5a34fcd7 | 367 | |
3cbe1980 DSH |
368 | =head1 EXAMPLE |
369 | ||
370 | This example digests the data "Test Message\n" and "Hello World\n", using the | |
371 | digest name passed on the command line. | |
372 | ||
373 | #include <stdio.h> | |
19ac1bf2 | 374 | #include <string.h> |
3cbe1980 DSH |
375 | #include <openssl/evp.h> |
376 | ||
19ac1bf2 | 377 | int main(int argc, char *argv[]) |
3cbe1980 | 378 | { |
2947af32 BB |
379 | EVP_MD_CTX *mdctx; |
380 | const EVP_MD *md; | |
381 | char mess1[] = "Test Message\n"; | |
382 | char mess2[] = "Hello World\n"; | |
383 | unsigned char md_value[EVP_MAX_MD_SIZE]; | |
19ac1bf2 | 384 | unsigned int md_len, i; |
2947af32 BB |
385 | |
386 | if (argv[1] == NULL) { | |
387 | printf("Usage: mdtest digestname\n"); | |
388 | exit(1); | |
389 | } | |
390 | ||
391 | md = EVP_get_digestbyname(argv[1]); | |
392 | if (md == NULL) { | |
393 | printf("Unknown message digest %s\n", argv[1]); | |
394 | exit(1); | |
395 | } | |
396 | ||
397 | mdctx = EVP_MD_CTX_new(); | |
398 | EVP_DigestInit_ex(mdctx, md, NULL); | |
399 | EVP_DigestUpdate(mdctx, mess1, strlen(mess1)); | |
400 | EVP_DigestUpdate(mdctx, mess2, strlen(mess2)); | |
401 | EVP_DigestFinal_ex(mdctx, md_value, &md_len); | |
402 | EVP_MD_CTX_free(mdctx); | |
403 | ||
404 | printf("Digest is: "); | |
405 | for (i = 0; i < md_len; i++) | |
406 | printf("%02x", md_value[i]); | |
407 | printf("\n"); | |
408 | ||
409 | exit(0); | |
3cbe1980 DSH |
410 | } |
411 | ||
3cbe1980 DSH |
412 | =head1 SEE ALSO |
413 | ||
37842dfa | 414 | L<EVP_MD_meth_new(3)>, |
9b86974e | 415 | L<dgst(1)>, |
b97fdb57 | 416 | L<evp(7)> |
4facdbb5 | 417 | |
bbda8ce9 RT |
418 | The full list of digest algorithms are provided below. |
419 | ||
420 | L<EVP_blake2b512(3)>, | |
421 | L<EVP_md2(3)>, | |
422 | L<EVP_md4(3)>, | |
423 | L<EVP_md5(3)>, | |
424 | L<EVP_mdc2(3)>, | |
425 | L<EVP_ripemd160(3)>, | |
426 | L<EVP_sha1(3)>, | |
427 | L<EVP_sha224(3)>, | |
428 | L<EVP_sha3_224(3)>, | |
67e247fa | 429 | L<EVP_sm3(3)>, |
bbda8ce9 RT |
430 | L<EVP_whirlpool(3)> |
431 | ||
3cbe1980 DSH |
432 | =head1 HISTORY |
433 | ||
fc5ecadd DMSP |
434 | The EVP_MD_CTX_create() and EVP_MD_CTX_destroy() functions were renamed to |
435 | EVP_MD_CTX_new() and EVP_MD_CTX_free() in OpenSSL 1.1.0, respectively. | |
25191fff | 436 | |
3fa39ed7 | 437 | The link between digests and signing algorithms was fixed in OpenSSL 1.0 and |
a95d7574 RS |
438 | later, so now EVP_sha1() can be used with RSA and DSA. |
439 | ||
fc5ecadd | 440 | The EVP_dss1() function was removed in OpenSSL 1.1.0. |
3fa39ed7 | 441 | |
fc5ecadd | 442 | The EVP_MD_CTX_set_pkey_ctx() function was added in 1.1.1. |
675f4cee | 443 | |
e2f92610 RS |
444 | =head1 COPYRIGHT |
445 | ||
0d664759 | 446 | Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved. |
e2f92610 | 447 | |
4746f25a | 448 | Licensed under the Apache License 2.0 (the "License"). You may not use |
e2f92610 RS |
449 | this file except in compliance with the License. You can obtain a copy |
450 | in the file LICENSE in the source distribution or at | |
451 | L<https://www.openssl.org/source/license.html>. | |
452 | ||
453 | =cut |