1/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57#ifndef OPENSSL_HEADER_EVP_H
58#define OPENSSL_HEADER_EVP_H
59
60#include <openssl/base.h>
61
62#include <openssl/thread.h>
63
64// OpenSSL included digest and cipher functions in this header so we include
65// them for users that still expect that.
66//
67// TODO(fork): clean up callers so that they include what they use.
68#include <openssl/aead.h>
69#include <openssl/base64.h>
70#include <openssl/cipher.h>
71#include <openssl/digest.h>
72#include <openssl/nid.h>
73
74#if defined(__cplusplus)
75extern "C" {
76#endif
77
78
79// EVP abstracts over public/private key algorithms.
80
81
82// Public key objects.
83//
84// An |EVP_PKEY| object represents a public or private key. A given object may
85// be used concurrently on multiple threads by non-mutating functions, provided
86// no other thread is concurrently calling a mutating function. Unless otherwise
87// documented, functions which take a |const| pointer are non-mutating and
88// functions which take a non-|const| pointer are mutating.
89
90// EVP_PKEY_new creates a new, empty public-key object and returns it or NULL
91// on allocation failure.
92OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_new(void);
93
94// EVP_PKEY_free frees all data referenced by |pkey| and then frees |pkey|
95// itself.
96OPENSSL_EXPORT void EVP_PKEY_free(EVP_PKEY *pkey);
97
98// EVP_PKEY_up_ref increments the reference count of |pkey| and returns one. It
99// does not mutate |pkey| for thread-safety purposes and may be used
100// concurrently.
101OPENSSL_EXPORT int EVP_PKEY_up_ref(EVP_PKEY *pkey);
102
103// EVP_PKEY_is_opaque returns one if |pkey| is opaque. Opaque keys are backed by
104// custom implementations which do not expose key material and parameters. It is
105// an error to attempt to duplicate, export, or compare an opaque key.
106OPENSSL_EXPORT int EVP_PKEY_is_opaque(const EVP_PKEY *pkey);
107
108// EVP_PKEY_cmp compares |a| and |b| and returns one if they are equal, zero if
109// not and a negative number on error.
110//
111// WARNING: this differs from the traditional return value of a "cmp"
112// function.
113OPENSSL_EXPORT int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b);
114
115// EVP_PKEY_copy_parameters sets the parameters of |to| to equal the parameters
116// of |from|. It returns one on success and zero on error.
117OPENSSL_EXPORT int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from);
118
119// EVP_PKEY_missing_parameters returns one if |pkey| is missing needed
120// parameters or zero if not, or if the algorithm doesn't take parameters.
121OPENSSL_EXPORT int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey);
122
123// EVP_PKEY_size returns the maximum size, in bytes, of a signature signed by
124// |pkey|. For an RSA key, this returns the number of bytes needed to represent
125// the modulus. For an EC key, this returns the maximum size of a DER-encoded
126// ECDSA signature.
127OPENSSL_EXPORT int EVP_PKEY_size(const EVP_PKEY *pkey);
128
129// EVP_PKEY_bits returns the "size", in bits, of |pkey|. For an RSA key, this
130// returns the bit length of the modulus. For an EC key, this returns the bit
131// length of the group order.
132OPENSSL_EXPORT int EVP_PKEY_bits(const EVP_PKEY *pkey);
133
134// EVP_PKEY_id returns the type of |pkey|, which is one of the |EVP_PKEY_*|
135// values.
136OPENSSL_EXPORT int EVP_PKEY_id(const EVP_PKEY *pkey);
137
138// EVP_PKEY_type returns |nid| if |nid| is a known key type and |NID_undef|
139// otherwise.
140OPENSSL_EXPORT int EVP_PKEY_type(int nid);
141
142
143// Getting and setting concrete public key types.
144//
145// The following functions get and set the underlying public key in an
146// |EVP_PKEY| object. The |set1| functions take an additional reference to the
147// underlying key and return one on success or zero if |key| is NULL. The
148// |assign| functions adopt the caller's reference and return one on success or
149// zero if |key| is NULL. The |get1| functions return a fresh reference to the
150// underlying object or NULL if |pkey| is not of the correct type. The |get0|
151// functions behave the same but return a non-owning pointer.
152//
153// The |get0| and |get1| functions take |const| pointers and are thus
154// non-mutating for thread-safety purposes, but mutating functions on the
155// returned lower-level objects are considered to also mutate the |EVP_PKEY| and
156// may not be called concurrently with other operations on the |EVP_PKEY|.
157
158OPENSSL_EXPORT int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key);
159OPENSSL_EXPORT int EVP_PKEY_assign_RSA(EVP_PKEY *pkey, RSA *key);
160OPENSSL_EXPORT RSA *EVP_PKEY_get0_RSA(const EVP_PKEY *pkey);
161OPENSSL_EXPORT RSA *EVP_PKEY_get1_RSA(const EVP_PKEY *pkey);
162
163OPENSSL_EXPORT int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key);
164OPENSSL_EXPORT int EVP_PKEY_assign_DSA(EVP_PKEY *pkey, DSA *key);
165OPENSSL_EXPORT DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey);
166OPENSSL_EXPORT DSA *EVP_PKEY_get1_DSA(const EVP_PKEY *pkey);
167
168OPENSSL_EXPORT int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);
169OPENSSL_EXPORT int EVP_PKEY_assign_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);
170OPENSSL_EXPORT EC_KEY *EVP_PKEY_get0_EC_KEY(const EVP_PKEY *pkey);
171OPENSSL_EXPORT EC_KEY *EVP_PKEY_get1_EC_KEY(const EVP_PKEY *pkey);
172
173#define EVP_PKEY_NONE NID_undef
174#define EVP_PKEY_RSA NID_rsaEncryption
175#define EVP_PKEY_RSA_PSS NID_rsassaPss
176#define EVP_PKEY_DSA NID_dsa
177#define EVP_PKEY_EC NID_X9_62_id_ecPublicKey
178#define EVP_PKEY_ED25519 NID_ED25519
179
180// EVP_PKEY_assign sets the underlying key of |pkey| to |key|, which must be of
181// the given type. It returns one if successful or zero if the |type| argument
182// is not one of the |EVP_PKEY_*| values or if |key| is NULL.
183OPENSSL_EXPORT int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key);
184
185// EVP_PKEY_set_type sets the type of |pkey| to |type|. It returns one if
186// successful or zero if the |type| argument is not one of the |EVP_PKEY_*|
187// values. If |pkey| is NULL, it simply reports whether the type is known.
188OPENSSL_EXPORT int EVP_PKEY_set_type(EVP_PKEY *pkey, int type);
189
190// EVP_PKEY_cmp_parameters compares the parameters of |a| and |b|. It returns
191// one if they match, zero if not, or a negative number of on error.
192//
193// WARNING: the return value differs from the usual return value convention.
194OPENSSL_EXPORT int EVP_PKEY_cmp_parameters(const EVP_PKEY *a,
195 const EVP_PKEY *b);
196
197
198// ASN.1 functions
199
200// EVP_parse_public_key decodes a DER-encoded SubjectPublicKeyInfo structure
201// (RFC 5280) from |cbs| and advances |cbs|. It returns a newly-allocated
202// |EVP_PKEY| or NULL on error. If the key is an EC key, the curve is guaranteed
203// to be set.
204//
205// The caller must check the type of the parsed public key to ensure it is
206// suitable and validate other desired key properties such as RSA modulus size
207// or EC curve.
208OPENSSL_EXPORT EVP_PKEY *EVP_parse_public_key(CBS *cbs);
209
210// EVP_marshal_public_key marshals |key| as a DER-encoded SubjectPublicKeyInfo
211// structure (RFC 5280) and appends the result to |cbb|. It returns one on
212// success and zero on error.
213OPENSSL_EXPORT int EVP_marshal_public_key(CBB *cbb, const EVP_PKEY *key);
214
215// EVP_parse_private_key decodes a DER-encoded PrivateKeyInfo structure (RFC
216// 5208) from |cbs| and advances |cbs|. It returns a newly-allocated |EVP_PKEY|
217// or NULL on error.
218//
219// The caller must check the type of the parsed private key to ensure it is
220// suitable and validate other desired key properties such as RSA modulus size
221// or EC curve.
222//
223// A PrivateKeyInfo ends with an optional set of attributes. These are not
224// processed and so this function will silently ignore any trailing data in the
225// structure.
226OPENSSL_EXPORT EVP_PKEY *EVP_parse_private_key(CBS *cbs);
227
228// EVP_marshal_private_key marshals |key| as a DER-encoded PrivateKeyInfo
229// structure (RFC 5208) and appends the result to |cbb|. It returns one on
230// success and zero on error.
231OPENSSL_EXPORT int EVP_marshal_private_key(CBB *cbb, const EVP_PKEY *key);
232
233
234// Raw keys
235//
236// Some keys types support a "raw" serialization. Currently the only supported
237// raw format is Ed25519, where the public key and private key formats are those
238// specified in RFC 8032. Note the RFC 8032 private key format is the 32-byte
239// prefix of |ED25519_sign|'s 64-byte private key.
240
241// EVP_PKEY_new_raw_private_key returns a newly allocated |EVP_PKEY| wrapping a
242// private key of the specified type. It returns one on success and zero on
243// error.
244OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *unused,
245 const uint8_t *in,
246 size_t len);
247
248// EVP_PKEY_new_raw_public_key returns a newly allocated |EVP_PKEY| wrapping a
249// public key of the specified type. It returns one on success and zero on
250// error.
251OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *unused,
252 const uint8_t *in,
253 size_t len);
254
255// EVP_PKEY_get_raw_private_key outputs the private key for |pkey| in raw form.
256// If |out| is NULL, it sets |*out_len| to the size of the raw private key.
257// Otherwise, it writes at most |*out_len| bytes to |out| and sets |*out_len| to
258// the number of bytes written.
259//
260// It returns one on success and zero if |pkey| has no private key, the key
261// type does not support a raw format, or the buffer is too small.
262OPENSSL_EXPORT int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey,
263 uint8_t *out, size_t *out_len);
264
265// EVP_PKEY_get_raw_public_key outputs the public key for |pkey| in raw form.
266// If |out| is NULL, it sets |*out_len| to the size of the raw public key.
267// Otherwise, it writes at most |*out_len| bytes to |out| and sets |*out_len| to
268// the number of bytes written.
269//
270// It returns one on success and zero if |pkey| has no public key, the key
271// type does not support a raw format, or the buffer is too small.
272OPENSSL_EXPORT int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey,
273 uint8_t *out, size_t *out_len);
274
275
276// Signing
277
278// EVP_DigestSignInit sets up |ctx| for a signing operation with |type| and
279// |pkey|. The |ctx| argument must have been initialised with
280// |EVP_MD_CTX_init|. If |pctx| is not NULL, the |EVP_PKEY_CTX| of the signing
281// operation will be written to |*pctx|; this can be used to set alternative
282// signing options.
283//
284// For single-shot signing algorithms which do not use a pre-hash, such as
285// Ed25519, |type| should be NULL. The |EVP_MD_CTX| itself is unused but is
286// present so the API is uniform. See |EVP_DigestSign|.
287//
288// This function does not mutate |pkey| for thread-safety purposes and may be
289// used concurrently with other non-mutating functions on |pkey|.
290//
291// It returns one on success, or zero on error.
292OPENSSL_EXPORT int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
293 const EVP_MD *type, ENGINE *e,
294 EVP_PKEY *pkey);
295
296// EVP_DigestSignUpdate appends |len| bytes from |data| to the data which will
297// be signed in |EVP_DigestSignFinal|. It returns one.
298//
299// This function performs a streaming signing operation and will fail for
300// signature algorithms which do not support this. Use |EVP_DigestSign| for a
301// single-shot operation.
302OPENSSL_EXPORT int EVP_DigestSignUpdate(EVP_MD_CTX *ctx, const void *data,
303 size_t len);
304
305// EVP_DigestSignFinal signs the data that has been included by one or more
306// calls to |EVP_DigestSignUpdate|. If |out_sig| is NULL then |*out_sig_len| is
307// set to the maximum number of output bytes. Otherwise, on entry,
308// |*out_sig_len| must contain the length of the |out_sig| buffer. If the call
309// is successful, the signature is written to |out_sig| and |*out_sig_len| is
310// set to its length.
311//
312// This function performs a streaming signing operation and will fail for
313// signature algorithms which do not support this. Use |EVP_DigestSign| for a
314// single-shot operation.
315//
316// It returns one on success, or zero on error.
317OPENSSL_EXPORT int EVP_DigestSignFinal(EVP_MD_CTX *ctx, uint8_t *out_sig,
318 size_t *out_sig_len);
319
320// EVP_DigestSign signs |data_len| bytes from |data| using |ctx|. If |out_sig|
321// is NULL then |*out_sig_len| is set to the maximum number of output
322// bytes. Otherwise, on entry, |*out_sig_len| must contain the length of the
323// |out_sig| buffer. If the call is successful, the signature is written to
324// |out_sig| and |*out_sig_len| is set to its length.
325//
326// It returns one on success and zero on error.
327OPENSSL_EXPORT int EVP_DigestSign(EVP_MD_CTX *ctx, uint8_t *out_sig,
328 size_t *out_sig_len, const uint8_t *data,
329 size_t data_len);
330
331
332// Verifying
333
334// EVP_DigestVerifyInit sets up |ctx| for a signature verification operation
335// with |type| and |pkey|. The |ctx| argument must have been initialised with
336// |EVP_MD_CTX_init|. If |pctx| is not NULL, the |EVP_PKEY_CTX| of the signing
337// operation will be written to |*pctx|; this can be used to set alternative
338// signing options.
339//
340// For single-shot signing algorithms which do not use a pre-hash, such as
341// Ed25519, |type| should be NULL. The |EVP_MD_CTX| itself is unused but is
342// present so the API is uniform. See |EVP_DigestVerify|.
343//
344// This function does not mutate |pkey| for thread-safety purposes and may be
345// used concurrently with other non-mutating functions on |pkey|.
346//
347// It returns one on success, or zero on error.
348OPENSSL_EXPORT int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
349 const EVP_MD *type, ENGINE *e,
350 EVP_PKEY *pkey);
351
352// EVP_DigestVerifyUpdate appends |len| bytes from |data| to the data which
353// will be verified by |EVP_DigestVerifyFinal|. It returns one.
354//
355// This function performs streaming signature verification and will fail for
356// signature algorithms which do not support this. Use |EVP_PKEY_verify_message|
357// for a single-shot verification.
358OPENSSL_EXPORT int EVP_DigestVerifyUpdate(EVP_MD_CTX *ctx, const void *data,
359 size_t len);
360
361// EVP_DigestVerifyFinal verifies that |sig_len| bytes of |sig| are a valid
362// signature for the data that has been included by one or more calls to
363// |EVP_DigestVerifyUpdate|. It returns one on success and zero otherwise.
364//
365// This function performs streaming signature verification and will fail for
366// signature algorithms which do not support this. Use |EVP_PKEY_verify_message|
367// for a single-shot verification.
368OPENSSL_EXPORT int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig,
369 size_t sig_len);
370
371// EVP_DigestVerify verifies that |sig_len| bytes from |sig| are a valid
372// signature for |data|. It returns one on success or zero on error.
373OPENSSL_EXPORT int EVP_DigestVerify(EVP_MD_CTX *ctx, const uint8_t *sig,
374 size_t sig_len, const uint8_t *data,
375 size_t len);
376
377
378// Signing (old functions)
379
380// EVP_SignInit_ex configures |ctx|, which must already have been initialised,
381// for a fresh signing operation using the hash function |type|. It returns one
382// on success and zero otherwise.
383//
384// (In order to initialise |ctx|, either obtain it initialised with
385// |EVP_MD_CTX_create|, or use |EVP_MD_CTX_init|.)
386OPENSSL_EXPORT int EVP_SignInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
387 ENGINE *impl);
388
389// EVP_SignInit is a deprecated version of |EVP_SignInit_ex|.
390//
391// TODO(fork): remove.
392OPENSSL_EXPORT int EVP_SignInit(EVP_MD_CTX *ctx, const EVP_MD *type);
393
394// EVP_SignUpdate appends |len| bytes from |data| to the data which will be
395// signed in |EVP_SignFinal|.
396OPENSSL_EXPORT int EVP_SignUpdate(EVP_MD_CTX *ctx, const void *data,
397 size_t len);
398
399// EVP_SignFinal signs the data that has been included by one or more calls to
400// |EVP_SignUpdate|, using the key |pkey|, and writes it to |sig|. On entry,
401// |sig| must point to at least |EVP_PKEY_size(pkey)| bytes of space. The
402// actual size of the signature is written to |*out_sig_len|.
403//
404// It returns one on success and zero otherwise.
405//
406// It does not modify |ctx|, thus it's possible to continue to use |ctx| in
407// order to sign a longer message. It also does not mutate |pkey| for
408// thread-safety purposes and may be used concurrently with other non-mutating
409// functions on |pkey|.
410OPENSSL_EXPORT int EVP_SignFinal(const EVP_MD_CTX *ctx, uint8_t *sig,
411 unsigned int *out_sig_len, EVP_PKEY *pkey);
412
413
414// Verifying (old functions)
415
416// EVP_VerifyInit_ex configures |ctx|, which must already have been
417// initialised, for a fresh signature verification operation using the hash
418// function |type|. It returns one on success and zero otherwise.
419//
420// (In order to initialise |ctx|, either obtain it initialised with
421// |EVP_MD_CTX_create|, or use |EVP_MD_CTX_init|.)
422OPENSSL_EXPORT int EVP_VerifyInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
423 ENGINE *impl);
424
425// EVP_VerifyInit is a deprecated version of |EVP_VerifyInit_ex|.
426//
427// TODO(fork): remove.
428OPENSSL_EXPORT int EVP_VerifyInit(EVP_MD_CTX *ctx, const EVP_MD *type);
429
430// EVP_VerifyUpdate appends |len| bytes from |data| to the data which will be
431// signed in |EVP_VerifyFinal|.
432OPENSSL_EXPORT int EVP_VerifyUpdate(EVP_MD_CTX *ctx, const void *data,
433 size_t len);
434
435// EVP_VerifyFinal verifies that |sig_len| bytes of |sig| are a valid
436// signature, by |pkey|, for the data that has been included by one or more
437// calls to |EVP_VerifyUpdate|.
438//
439// It returns one on success and zero otherwise.
440//
441// It does not modify |ctx|, thus it's possible to continue to use |ctx| in
442// order to verify a longer message. It also does not mutate |pkey| for
443// thread-safety purposes and may be used concurrently with other non-mutating
444// functions on |pkey|.
445OPENSSL_EXPORT int EVP_VerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig,
446 size_t sig_len, EVP_PKEY *pkey);
447
448
449// Printing
450
451// EVP_PKEY_print_public prints a textual representation of the public key in
452// |pkey| to |out|. Returns one on success or zero otherwise.
453OPENSSL_EXPORT int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
454 int indent, ASN1_PCTX *pctx);
455
456// EVP_PKEY_print_private prints a textual representation of the private key in
457// |pkey| to |out|. Returns one on success or zero otherwise.
458OPENSSL_EXPORT int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
459 int indent, ASN1_PCTX *pctx);
460
461// EVP_PKEY_print_params prints a textual representation of the parameters in
462// |pkey| to |out|. Returns one on success or zero otherwise.
463OPENSSL_EXPORT int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
464 int indent, ASN1_PCTX *pctx);
465
466
467// Password stretching.
468//
469// Password stretching functions take a low-entropy password and apply a slow
470// function that results in a key suitable for use in symmetric
471// cryptography.
472
473// PKCS5_PBKDF2_HMAC computes |iterations| iterations of PBKDF2 of |password|
474// and |salt|, using |digest|, and outputs |key_len| bytes to |out_key|. It
475// returns one on success and zero on allocation failure or if iterations is 0.
476OPENSSL_EXPORT int PKCS5_PBKDF2_HMAC(const char *password, size_t password_len,
477 const uint8_t *salt, size_t salt_len,
478 unsigned iterations, const EVP_MD *digest,
479 size_t key_len, uint8_t *out_key);
480
481// PKCS5_PBKDF2_HMAC_SHA1 is the same as PKCS5_PBKDF2_HMAC, but with |digest|
482// fixed to |EVP_sha1|.
483OPENSSL_EXPORT int PKCS5_PBKDF2_HMAC_SHA1(const char *password,
484 size_t password_len,
485 const uint8_t *salt, size_t salt_len,
486 unsigned iterations, size_t key_len,
487 uint8_t *out_key);
488
489// EVP_PBE_scrypt expands |password| into a secret key of length |key_len| using
490// scrypt, as described in RFC 7914, and writes the result to |out_key|. It
491// returns one on success and zero on allocation failure, if the memory required
492// for the operation exceeds |max_mem|, or if any of the parameters are invalid
493// as described below.
494//
495// |N|, |r|, and |p| are as described in RFC 7914 section 6. They determine the
496// cost of the operation. If |max_mem| is zero, a defult limit of 32MiB will be
497// used.
498//
499// The parameters are considered invalid under any of the following conditions:
500// - |r| or |p| are zero
501// - |p| > (2^30 - 1) / |r|
502// - |N| is not a power of two
503// - |N| > 2^32
504// - |N| > 2^(128 * |r| / 8)
505OPENSSL_EXPORT int EVP_PBE_scrypt(const char *password, size_t password_len,
506 const uint8_t *salt, size_t salt_len,
507 uint64_t N, uint64_t r, uint64_t p,
508 size_t max_mem, uint8_t *out_key,
509 size_t key_len);
510
511
512// Public key contexts.
513//
514// |EVP_PKEY_CTX| objects hold the context of an operation (e.g. signing or
515// encrypting) that uses a public key.
516
517// EVP_PKEY_CTX_new allocates a fresh |EVP_PKEY_CTX| for use with |pkey|. It
518// returns the context or NULL on error.
519OPENSSL_EXPORT EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e);
520
521// EVP_PKEY_CTX_new_id allocates a fresh |EVP_PKEY_CTX| for a key of type |id|
522// (e.g. |EVP_PKEY_HMAC|). This can be used for key generation where
523// |EVP_PKEY_CTX_new| can't be used because there isn't an |EVP_PKEY| to pass
524// it. It returns the context or NULL on error.
525OPENSSL_EXPORT EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e);
526
527// EVP_PKEY_CTX_free frees |ctx| and the data it owns.
528OPENSSL_EXPORT void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx);
529
530// EVP_PKEY_CTX_dup allocates a fresh |EVP_PKEY_CTX| and sets it equal to the
531// state of |ctx|. It returns the fresh |EVP_PKEY_CTX| or NULL on error.
532OPENSSL_EXPORT EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx);
533
534// EVP_PKEY_CTX_get0_pkey returns the |EVP_PKEY| associated with |ctx|.
535OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx);
536
537// EVP_PKEY_sign_init initialises an |EVP_PKEY_CTX| for a signing operation. It
538// should be called before |EVP_PKEY_sign|.
539//
540// It returns one on success or zero on error.
541OPENSSL_EXPORT int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx);
542
543// EVP_PKEY_sign signs |digest_len| bytes from |digest| using |ctx|. If |sig| is
544// NULL, the maximum size of the signature is written to
545// |out_sig_len|. Otherwise, |*sig_len| must contain the number of bytes of
546// space available at |sig|. If sufficient, the signature will be written to
547// |sig| and |*sig_len| updated with the true length.
548//
549// This function expects a pre-hashed input and will fail for signature
550// algorithms which do not support this. Use |EVP_DigestSignInit| to sign an
551// unhashed input.
552//
553// WARNING: Setting |sig| to NULL only gives the maximum size of the
554// signature. The actual signature may be smaller.
555//
556// It returns one on success or zero on error. (Note: this differs from
557// OpenSSL, which can also return negative values to indicate an error. )
558OPENSSL_EXPORT int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, uint8_t *sig,
559 size_t *sig_len, const uint8_t *digest,
560 size_t digest_len);
561
562// EVP_PKEY_verify_init initialises an |EVP_PKEY_CTX| for a signature
563// verification operation. It should be called before |EVP_PKEY_verify|.
564//
565// It returns one on success or zero on error.
566OPENSSL_EXPORT int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx);
567
568// EVP_PKEY_verify verifies that |sig_len| bytes from |sig| are a valid
569// signature for |digest|.
570//
571// This function expects a pre-hashed input and will fail for signature
572// algorithms which do not support this. Use |EVP_DigestVerifyInit| to verify a
573// signature given the unhashed input.
574//
575// It returns one on success or zero on error.
576OPENSSL_EXPORT int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig,
577 size_t sig_len, const uint8_t *digest,
578 size_t digest_len);
579
580// EVP_PKEY_encrypt_init initialises an |EVP_PKEY_CTX| for an encryption
581// operation. It should be called before |EVP_PKEY_encrypt|.
582//
583// It returns one on success or zero on error.
584OPENSSL_EXPORT int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx);
585
586// EVP_PKEY_encrypt encrypts |in_len| bytes from |in|. If |out| is NULL, the
587// maximum size of the ciphertext is written to |out_len|. Otherwise, |*out_len|
588// must contain the number of bytes of space available at |out|. If sufficient,
589// the ciphertext will be written to |out| and |*out_len| updated with the true
590// length.
591//
592// WARNING: Setting |out| to NULL only gives the maximum size of the
593// ciphertext. The actual ciphertext may be smaller.
594//
595// It returns one on success or zero on error.
596OPENSSL_EXPORT int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, uint8_t *out,
597 size_t *out_len, const uint8_t *in,
598 size_t in_len);
599
600// EVP_PKEY_decrypt_init initialises an |EVP_PKEY_CTX| for a decryption
601// operation. It should be called before |EVP_PKEY_decrypt|.
602//
603// It returns one on success or zero on error.
604OPENSSL_EXPORT int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx);
605
606// EVP_PKEY_decrypt decrypts |in_len| bytes from |in|. If |out| is NULL, the
607// maximum size of the plaintext is written to |out_len|. Otherwise, |*out_len|
608// must contain the number of bytes of space available at |out|. If sufficient,
609// the ciphertext will be written to |out| and |*out_len| updated with the true
610// length.
611//
612// WARNING: Setting |out| to NULL only gives the maximum size of the
613// plaintext. The actual plaintext may be smaller.
614//
615// It returns one on success or zero on error.
616OPENSSL_EXPORT int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, uint8_t *out,
617 size_t *out_len, const uint8_t *in,
618 size_t in_len);
619
620// EVP_PKEY_verify_recover_init initialises an |EVP_PKEY_CTX| for a public-key
621// decryption operation. It should be called before |EVP_PKEY_verify_recover|.
622//
623// Public-key decryption is a very obscure operation that is only implemented
624// by RSA keys. It is effectively a signature verification operation that
625// returns the signed message directly. It is almost certainly not what you
626// want.
627//
628// It returns one on success or zero on error.
629OPENSSL_EXPORT int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx);
630
631// EVP_PKEY_verify_recover decrypts |sig_len| bytes from |sig|. If |out| is
632// NULL, the maximum size of the plaintext is written to |out_len|. Otherwise,
633// |*out_len| must contain the number of bytes of space available at |out|. If
634// sufficient, the ciphertext will be written to |out| and |*out_len| updated
635// with the true length.
636//
637// WARNING: Setting |out| to NULL only gives the maximum size of the
638// plaintext. The actual plaintext may be smaller.
639//
640// See the warning about this operation in |EVP_PKEY_verify_recover_init|. It
641// is probably not what you want.
642//
643// It returns one on success or zero on error.
644OPENSSL_EXPORT int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, uint8_t *out,
645 size_t *out_len, const uint8_t *sig,
646 size_t siglen);
647
648// EVP_PKEY_derive_init initialises an |EVP_PKEY_CTX| for a key derivation
649// operation. It should be called before |EVP_PKEY_derive_set_peer| and
650// |EVP_PKEY_derive|.
651//
652// It returns one on success or zero on error.
653OPENSSL_EXPORT int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx);
654
655// EVP_PKEY_derive_set_peer sets the peer's key to be used for key derivation
656// by |ctx| to |peer|. It should be called after |EVP_PKEY_derive_init|. (For
657// example, this is used to set the peer's key in (EC)DH.) It returns one on
658// success and zero on error.
659OPENSSL_EXPORT int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer);
660
661// EVP_PKEY_derive derives a shared key between the two keys configured in
662// |ctx|. If |key| is non-NULL then, on entry, |out_key_len| must contain the
663// amount of space at |key|. If sufficient then the shared key will be written
664// to |key| and |*out_key_len| will be set to the length. If |key| is NULL then
665// |out_key_len| will be set to the maximum length.
666//
667// WARNING: Setting |out| to NULL only gives the maximum size of the key. The
668// actual key may be smaller.
669//
670// It returns one on success and zero on error.
671OPENSSL_EXPORT int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, uint8_t *key,
672 size_t *out_key_len);
673
674// EVP_PKEY_keygen_init initialises an |EVP_PKEY_CTX| for a key generation
675// operation. It should be called before |EVP_PKEY_keygen|.
676//
677// It returns one on success or zero on error.
678OPENSSL_EXPORT int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx);
679
680// EVP_PKEY_keygen performs a key generation operation using the values from
681// |ctx|. If |*out_pkey| is non-NULL, it overwrites |*out_pkey| with the
682// resulting key. Otherwise, it sets |*out_pkey| to a newly-allocated |EVP_PKEY|
683// containing the result. It returns one on success or zero on error.
684OPENSSL_EXPORT int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **out_pkey);
685
686// EVP_PKEY_paramgen_init initialises an |EVP_PKEY_CTX| for a parameter
687// generation operation. It should be called before |EVP_PKEY_paramgen|.
688//
689// It returns one on success or zero on error.
690OPENSSL_EXPORT int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx);
691
692// EVP_PKEY_paramgen performs a parameter generation using the values from
693// |ctx|. If |*out_pkey| is non-NULL, it overwrites |*out_pkey| with the
694// resulting parameters, but no key. Otherwise, it sets |*out_pkey| to a
695// newly-allocated |EVP_PKEY| containing the result. It returns one on success
696// or zero on error.
697OPENSSL_EXPORT int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **out_pkey);
698
699
700// Generic control functions.
701
702// EVP_PKEY_CTX_set_signature_md sets |md| as the digest to be used in a
703// signature operation. It returns one on success or zero on error.
704OPENSSL_EXPORT int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx,
705 const EVP_MD *md);
706
707// EVP_PKEY_CTX_get_signature_md sets |*out_md| to the digest to be used in a
708// signature operation. It returns one on success or zero on error.
709OPENSSL_EXPORT int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx,
710 const EVP_MD **out_md);
711
712
713// RSA specific control functions.
714
715// EVP_PKEY_CTX_set_rsa_padding sets the padding type to use. It should be one
716// of the |RSA_*_PADDING| values. Returns one on success or zero on error.
717OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_padding(EVP_PKEY_CTX *ctx, int padding);
718
719// EVP_PKEY_CTX_get_rsa_padding sets |*out_padding| to the current padding
720// value, which is one of the |RSA_*_PADDING| values. Returns one on success or
721// zero on error.
722OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_padding(EVP_PKEY_CTX *ctx,
723 int *out_padding);
724
725// EVP_PKEY_CTX_set_rsa_pss_saltlen sets the length of the salt in a PSS-padded
726// signature. A value of -1 cause the salt to be the same length as the digest
727// in the signature. A value of -2 causes the salt to be the maximum length
728// that will fit when signing and recovered from the signature when verifying.
729// Otherwise the value gives the size of the salt in bytes.
730//
731// If unsure, use -1.
732//
733// Returns one on success or zero on error.
734OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_saltlen(EVP_PKEY_CTX *ctx,
735 int salt_len);
736
737// EVP_PKEY_CTX_get_rsa_pss_saltlen sets |*out_salt_len| to the salt length of
738// a PSS-padded signature. See the documentation for
739// |EVP_PKEY_CTX_set_rsa_pss_saltlen| for details of the special values that it
740// can take.
741//
742// Returns one on success or zero on error.
743OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_pss_saltlen(EVP_PKEY_CTX *ctx,
744 int *out_salt_len);
745
746// EVP_PKEY_CTX_set_rsa_keygen_bits sets the size of the desired RSA modulus,
747// in bits, for key generation. Returns one on success or zero on
748// error.
749OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_keygen_bits(EVP_PKEY_CTX *ctx,
750 int bits);
751
752// EVP_PKEY_CTX_set_rsa_keygen_pubexp sets |e| as the public exponent for key
753// generation. Returns one on success or zero on error.
754OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_keygen_pubexp(EVP_PKEY_CTX *ctx,
755 BIGNUM *e);
756
757// EVP_PKEY_CTX_set_rsa_oaep_md sets |md| as the digest used in OAEP padding.
758// Returns one on success or zero on error.
759OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_oaep_md(EVP_PKEY_CTX *ctx,
760 const EVP_MD *md);
761
762// EVP_PKEY_CTX_get_rsa_oaep_md sets |*out_md| to the digest function used in
763// OAEP padding. Returns one on success or zero on error.
764OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_oaep_md(EVP_PKEY_CTX *ctx,
765 const EVP_MD **out_md);
766
767// EVP_PKEY_CTX_set_rsa_mgf1_md sets |md| as the digest used in MGF1. Returns
768// one on success or zero on error.
769OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_mgf1_md(EVP_PKEY_CTX *ctx,
770 const EVP_MD *md);
771
772// EVP_PKEY_CTX_get_rsa_mgf1_md sets |*out_md| to the digest function used in
773// MGF1. Returns one on success or zero on error.
774OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_mgf1_md(EVP_PKEY_CTX *ctx,
775 const EVP_MD **out_md);
776
777// EVP_PKEY_CTX_set0_rsa_oaep_label sets |label_len| bytes from |label| as the
778// label used in OAEP. DANGER: On success, this call takes ownership of |label|
779// and will call |OPENSSL_free| on it when |ctx| is destroyed.
780//
781// Returns one on success or zero on error.
782OPENSSL_EXPORT int EVP_PKEY_CTX_set0_rsa_oaep_label(EVP_PKEY_CTX *ctx,
783 uint8_t *label,
784 size_t label_len);
785
786// EVP_PKEY_CTX_get0_rsa_oaep_label sets |*out_label| to point to the internal
787// buffer containing the OAEP label (which may be NULL) and returns the length
788// of the label or a negative value on error.
789//
790// WARNING: the return value differs from the usual return value convention.
791OPENSSL_EXPORT int EVP_PKEY_CTX_get0_rsa_oaep_label(EVP_PKEY_CTX *ctx,
792 const uint8_t **out_label);
793
794
795// EC specific control functions.
796
797// EVP_PKEY_CTX_set_ec_paramgen_curve_nid sets the curve used for
798// |EVP_PKEY_keygen| or |EVP_PKEY_paramgen| operations to |nid|. It returns one
799// on success and zero on error.
800OPENSSL_EXPORT int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx,
801 int nid);
802
803
804// Deprecated functions.
805
806// EVP_PKEY_DH is defined for compatibility, but it is impossible to create an
807// |EVP_PKEY| of that type.
808#define EVP_PKEY_DH NID_dhKeyAgreement
809
810// EVP_PKEY_RSA2 was historically an alternate form for RSA public keys (OID
811// 2.5.8.1.1), but is no longer accepted.
812#define EVP_PKEY_RSA2 NID_rsa
813
814// OpenSSL_add_all_algorithms does nothing.
815OPENSSL_EXPORT void OpenSSL_add_all_algorithms(void);
816
817// OPENSSL_add_all_algorithms_conf does nothing.
818OPENSSL_EXPORT void OPENSSL_add_all_algorithms_conf(void);
819
820// OpenSSL_add_all_ciphers does nothing.
821OPENSSL_EXPORT void OpenSSL_add_all_ciphers(void);
822
823// OpenSSL_add_all_digests does nothing.
824OPENSSL_EXPORT void OpenSSL_add_all_digests(void);
825
826// EVP_cleanup does nothing.
827OPENSSL_EXPORT void EVP_cleanup(void);
828
829OPENSSL_EXPORT void EVP_CIPHER_do_all_sorted(
830 void (*callback)(const EVP_CIPHER *cipher, const char *name,
831 const char *unused, void *arg),
832 void *arg);
833
834OPENSSL_EXPORT void EVP_MD_do_all_sorted(void (*callback)(const EVP_MD *cipher,
835 const char *name,
836 const char *unused,
837 void *arg),
838 void *arg);
839
840// i2d_PrivateKey marshals a private key from |key| to an ASN.1, DER
841// structure. If |outp| is not NULL then the result is written to |*outp| and
842// |*outp| is advanced just past the output. It returns the number of bytes in
843// the result, whether written or not, or a negative value on error.
844//
845// RSA keys are serialized as a DER-encoded RSAPublicKey (RFC 3447) structure.
846// EC keys are serialized as a DER-encoded ECPrivateKey (RFC 5915) structure.
847//
848// Use |RSA_marshal_private_key| or |EC_KEY_marshal_private_key| instead.
849OPENSSL_EXPORT int i2d_PrivateKey(const EVP_PKEY *key, uint8_t **outp);
850
851// i2d_PublicKey marshals a public key from |key| to a type-specific format.
852// If |outp| is not NULL then the result is written to |*outp| and
853// |*outp| is advanced just past the output. It returns the number of bytes in
854// the result, whether written or not, or a negative value on error.
855//
856// RSA keys are serialized as a DER-encoded RSAPublicKey (RFC 3447) structure.
857// EC keys are serialized as an EC point per SEC 1.
858//
859// Use |RSA_marshal_public_key| or |EC_POINT_point2cbb| instead.
860OPENSSL_EXPORT int i2d_PublicKey(const EVP_PKEY *key, uint8_t **outp);
861
862// d2i_PrivateKey parses an ASN.1, DER-encoded, private key from |len| bytes at
863// |*inp|. If |out| is not NULL then, on exit, a pointer to the result is in
864// |*out|. Note that, even if |*out| is already non-NULL on entry, it will not
865// be written to. Rather, a fresh |EVP_PKEY| is allocated and the previous one
866// is freed. On successful exit, |*inp| is advanced past the DER structure. It
867// returns the result or NULL on error.
868//
869// This function tries to detect one of several formats. Instead, use
870// |EVP_parse_private_key| for a PrivateKeyInfo, |RSA_parse_private_key| for an
871// RSAPrivateKey, and |EC_parse_private_key| for an ECPrivateKey.
872OPENSSL_EXPORT EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **out,
873 const uint8_t **inp, long len);
874
875// d2i_AutoPrivateKey acts the same as |d2i_PrivateKey|, but detects the type
876// of the private key.
877//
878// This function tries to detect one of several formats. Instead, use
879// |EVP_parse_private_key| for a PrivateKeyInfo, |RSA_parse_private_key| for an
880// RSAPrivateKey, and |EC_parse_private_key| for an ECPrivateKey.
881OPENSSL_EXPORT EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **out, const uint8_t **inp,
882 long len);
883
884// d2i_PublicKey parse a public key from |len| bytes at |*inp| in a type-
885// specific format specified by |type|. If |out| is not NULL then, on exit, a
886// pointer to the result is in |*out|. Note that, even if |*out| is already non-
887// NULL on entry, it will not be written to. Rather, a fresh |EVP_PKEY| is
888// allocated and the previous one is freed. On successful exit, |*inp| is
889// advanced past the decoded key. It returns the result or NULL on error.
890//
891// RSA keys are parsed as a DER-encoded RSAPublicKey (RFC 3447) structure.
892// Parsing EC keys is not supported by this function.
893//
894// Use |RSA_parse_public_key| instead.
895OPENSSL_EXPORT EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **out,
896 const uint8_t **inp, long len);
897
898// EVP_PKEY_get0_DH returns NULL.
899OPENSSL_EXPORT DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey);
900
901// EVP_PKEY_get1_DH returns NULL.
902OPENSSL_EXPORT DH *EVP_PKEY_get1_DH(const EVP_PKEY *pkey);
903
904// EVP_PKEY_CTX_set_ec_param_enc returns one if |encoding| is
905// |OPENSSL_EC_NAMED_CURVE| or zero with an error otherwise.
906OPENSSL_EXPORT int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx,
907 int encoding);
908
909
910// Preprocessor compatibility section (hidden).
911//
912// Historically, a number of APIs were implemented in OpenSSL as macros and
913// constants to 'ctrl' functions. To avoid breaking #ifdefs in consumers, this
914// section defines a number of legacy macros.
915
916// |BORINGSSL_PREFIX| already makes each of these symbols into macros, so there
917// is no need to define conflicting macros.
918#if !defined(BORINGSSL_PREFIX)
919#define EVP_PKEY_CTX_set_rsa_oaep_md EVP_PKEY_CTX_set_rsa_oaep_md
920#define EVP_PKEY_CTX_set0_rsa_oaep_label EVP_PKEY_CTX_set0_rsa_oaep_label
921#endif
922
923
924// Private structures.
925
926struct evp_pkey_st {
927 CRYPTO_refcount_t references;
928
929 // type contains one of the EVP_PKEY_* values or NID_undef and determines
930 // which element (if any) of the |pkey| union is valid.
931 int type;
932
933 union {
934 void *ptr;
935 RSA *rsa;
936 DSA *dsa;
937 DH *dh;
938 EC_KEY *ec;
939 } pkey;
940
941 // ameth contains a pointer to a method table that contains many ASN.1
942 // methods for the key type.
943 const EVP_PKEY_ASN1_METHOD *ameth;
944} /* EVP_PKEY */;
945
946
947#if defined(__cplusplus)
948} // extern C
949
950extern "C++" {
951BSSL_NAMESPACE_BEGIN
952
953BORINGSSL_MAKE_DELETER(EVP_PKEY, EVP_PKEY_free)
954BORINGSSL_MAKE_UP_REF(EVP_PKEY, EVP_PKEY_up_ref)
955BORINGSSL_MAKE_DELETER(EVP_PKEY_CTX, EVP_PKEY_CTX_free)
956
957BSSL_NAMESPACE_END
958
959} // extern C++
960
961#endif
962
963#define EVP_R_BUFFER_TOO_SMALL 100
964#define EVP_R_COMMAND_NOT_SUPPORTED 101
965#define EVP_R_DECODE_ERROR 102
966#define EVP_R_DIFFERENT_KEY_TYPES 103
967#define EVP_R_DIFFERENT_PARAMETERS 104
968#define EVP_R_ENCODE_ERROR 105
969#define EVP_R_EXPECTING_AN_EC_KEY_KEY 106
970#define EVP_R_EXPECTING_AN_RSA_KEY 107
971#define EVP_R_EXPECTING_A_DSA_KEY 108
972#define EVP_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE 109
973#define EVP_R_INVALID_DIGEST_LENGTH 110
974#define EVP_R_INVALID_DIGEST_TYPE 111
975#define EVP_R_INVALID_KEYBITS 112
976#define EVP_R_INVALID_MGF1_MD 113
977#define EVP_R_INVALID_OPERATION 114
978#define EVP_R_INVALID_PADDING_MODE 115
979#define EVP_R_INVALID_PSS_SALTLEN 116
980#define EVP_R_KEYS_NOT_SET 117
981#define EVP_R_MISSING_PARAMETERS 118
982#define EVP_R_NO_DEFAULT_DIGEST 119
983#define EVP_R_NO_KEY_SET 120
984#define EVP_R_NO_MDC2_SUPPORT 121
985#define EVP_R_NO_NID_FOR_CURVE 122
986#define EVP_R_NO_OPERATION_SET 123
987#define EVP_R_NO_PARAMETERS_SET 124
988#define EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE 125
989#define EVP_R_OPERATON_NOT_INITIALIZED 126
990#define EVP_R_UNKNOWN_PUBLIC_KEY_TYPE 127
991#define EVP_R_UNSUPPORTED_ALGORITHM 128
992#define EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE 129
993#define EVP_R_NOT_A_PRIVATE_KEY 130
994#define EVP_R_INVALID_SIGNATURE 131
995#define EVP_R_MEMORY_LIMIT_EXCEEDED 132
996#define EVP_R_INVALID_PARAMETERS 133
997
998#endif // OPENSSL_HEADER_EVP_H
999