1EVP_PKEY_SET1_RSA(3ossl) OpenSSL EVP_PKEY_SET1_RSA(3ossl)
2
6 EVP_PKEY_set1_RSA, EVP_PKEY_set1_DSA, EVP_PKEY_set1_DH,
7 EVP_PKEY_set1_EC_KEY, EVP_PKEY_get1_RSA, EVP_PKEY_get1_DSA,
8 EVP_PKEY_get1_DH, EVP_PKEY_get1_EC_KEY, EVP_PKEY_get0_RSA,
9 EVP_PKEY_get0_DSA, EVP_PKEY_get0_DH, EVP_PKEY_get0_EC_KEY,
10 EVP_PKEY_assign_RSA, EVP_PKEY_assign_DSA, EVP_PKEY_assign_DH,
11 EVP_PKEY_assign_EC_KEY, EVP_PKEY_assign_POLY1305,
12 EVP_PKEY_assign_SIPHASH, EVP_PKEY_get0_hmac, EVP_PKEY_get0_poly1305,
13 EVP_PKEY_get0_siphash, EVP_PKEY_get0, EVP_PKEY_type, EVP_PKEY_get_id,
14 EVP_PKEY_get_base_id, EVP_PKEY_set1_engine, EVP_PKEY_get0_engine,
15 EVP_PKEY_id, EVP_PKEY_base_id - EVP_PKEY assignment functions
16
18 #include <openssl/evp.h>
19 int EVP_PKEY_get_id(const EVP_PKEY *pkey);
21 int EVP_PKEY_get_base_id(const EVP_PKEY *pkey);
22 int EVP_PKEY_type(int type);
23 #define EVP_PKEY_id EVP_PKEY_get_id
25 #define EVP_PKEY_base_id EVP_PKEY_get_base_id
26 The following functions have been deprecated since OpenSSL 3.0, and can
28 be hidden entirely by defining OPENSSL_API_COMPAT with a suitable
29 version value, see openssl_user_macros(7):
30 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key);
32 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key);
33 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key);
34 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);
35 RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey);
37 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey);
38 DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey);
39 EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey);
40 const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len);
42 const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len);
43 const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len);
44 const RSA *EVP_PKEY_get0_RSA(const EVP_PKEY *pkey);
45 const DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey);
46 const DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey);
47 const EC_KEY *EVP_PKEY_get0_EC_KEY(const EVP_PKEY *pkey);
48 void *EVP_PKEY_get0(const EVP_PKEY *pkey);
49 int EVP_PKEY_assign_RSA(EVP_PKEY *pkey, RSA *key);
51 int EVP_PKEY_assign_DSA(EVP_PKEY *pkey, DSA *key);
52 int EVP_PKEY_assign_DH(EVP_PKEY *pkey, DH *key);
53 int EVP_PKEY_assign_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);
54 int EVP_PKEY_assign_POLY1305(EVP_PKEY *pkey, ASN1_OCTET_STRING *key);
55 int EVP_PKEY_assign_SIPHASH(EVP_PKEY *pkey, ASN1_OCTET_STRING *key);
56 ENGINE *EVP_PKEY_get0_engine(const EVP_PKEY *pkey);
58 int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *engine);
59
61 EVP_PKEY_get_base_id() returns the type of pkey. For example an RSA key
62 will return EVP_PKEY_RSA.
63 EVP_PKEY_get_id() returns the actual NID associated with pkey only if
65 the pkey type isn't implemented just in a provider(7). Historically
66 keys using the same algorithm could use different NIDs. For example an
67 RSA key could use the NIDs corresponding to the NIDs NID_rsaEncryption
68 (equivalent to EVP_PKEY_RSA) or NID_rsa (equivalent to EVP_PKEY_RSA2).
69 The use of alternative non-standard NIDs is now rare so EVP_PKEY_RSA2
70 et al are not often seen in practice. EVP_PKEY_get_id() returns -1
71 (EVP_PKEY_KEYMGMT) if the pkey is only implemented in a provider(7).
72 EVP_PKEY_type() returns the underlying type of the NID type. For
74 example EVP_PKEY_type(EVP_PKEY_RSA2) will return EVP_PKEY_RSA.
75 EVP_PKEY_set1_RSA(), EVP_PKEY_set1_DSA(), EVP_PKEY_set1_DH() and
77 EVP_PKEY_set1_EC_KEY() set the key referenced by pkey to key. These
78 functions are deprecated. Applications should instead use
79 EVP_PKEY_fromdata(3).
80 EVP_PKEY_assign_RSA(), EVP_PKEY_assign_DSA(), EVP_PKEY_assign_DH(),
82 EVP_PKEY_assign_EC_KEY(), EVP_PKEY_assign_POLY1305() and
83 EVP_PKEY_assign_SIPHASH() set the referenced key to key however these
84 use the supplied key internally and so key will be freed when the
85 parent pkey is freed. These macros are deprecated. Applications should
86 instead read an EVP_PKEY directly using the OSSL_DECODER APIs (see
87 OSSL_DECODER_CTX_new_for_pkey(3)), or construct an EVP_PKEY from data
88 using EVP_PKEY_fromdata(3).
89 EVP_PKEY_get1_RSA(), EVP_PKEY_get1_DSA(), EVP_PKEY_get1_DH() and
91 EVP_PKEY_get1_EC_KEY() return the referenced key in pkey or NULL if the
92 key is not of the correct type. The returned key must be freed after
93 use. These functions are deprecated. Applications should instead use
94 the EVP_PKEY directly where possible. If access to the low level key
95 parameters is required then applications should use
96 EVP_PKEY_get_params(3) and other similar functions. To write an
97 EVP_PKEY out use the OSSL_ENCODER APIs (see
98 OSSL_ENCODER_CTX_new_for_pkey(3)).
99 EVP_PKEY_get0_hmac(), EVP_PKEY_get0_poly1305(),
101 EVP_PKEY_get0_siphash(), EVP_PKEY_get0_RSA(), EVP_PKEY_get0_DSA(),
102 EVP_PKEY_get0_DH() and EVP_PKEY_get0_EC_KEY() return the referenced key
103 in pkey or NULL if the key is not of the correct type. The reference
104 count of the returned key is not incremented and so the key must not be
105 freed after use. These functions are deprecated. Applications should
106 instead use the EVP_PKEY directly where possible. If access to the low
107 level key parameters is required then applications should use
108 EVP_PKEY_get_params(3) and other similar functions. To write an
109 EVP_PKEY out use the OSSL_ENCODER APIs (see
110 OSSL_ENCODER_CTX_new_for_pkey(3)). EVP_PKEY_get0() returns a pointer to
111 the legacy key or NULL if the key is not legacy.
112 Note that if an EVP_PKEY was not constructed using one of the
114 deprecated functions such as EVP_PKEY_set1_RSA(), EVP_PKEY_set1_DSA(),
115 EVP_PKEY_set1_DH() or EVP_PKEY_set1_EC_KEY(), or via the similarly
116 named EVP_PKEY_assign macros described above then the internal key will
117 be managed by a provider (see provider(7)). In that case the key
118 returned by EVP_PKEY_get1_RSA(), EVP_PKEY_get1_DSA(),
119 EVP_PKEY_get1_DH(), EVP_PKEY_get1_EC_KEY(), EVP_PKEY_get0_hmac(),
120 EVP_PKEY_get0_poly1305(), EVP_PKEY_get0_siphash(), EVP_PKEY_get0_RSA(),
121 EVP_PKEY_get0_DSA(), EVP_PKEY_get0_DH() or EVP_PKEY_get0_EC_KEY() will
122 be a cached copy of the provider's key. Subsequent updates to the
123 provider's key will not be reflected back in the cached copy, and
124 updates made by an application to the returned key will not be
125 reflected back in the provider's key. Subsequent calls to
126 EVP_PKEY_get1_RSA(), EVP_PKEY_get1_DSA(), EVP_PKEY_get1_DH() and
127 EVP_PKEY_get1_EC_KEY() will always return the cached copy returned by
128 the first call.
129 EVP_PKEY_get0_engine() returns a reference to the ENGINE handling pkey.
131 This function is deprecated. Applications should use providers instead
132 of engines (see provider(7) for details).
133 EVP_PKEY_set1_engine() sets the ENGINE handling pkey to engine. It must
135 be called after the key algorithm and components are set up. If engine
136 does not include an EVP_PKEY_METHOD for pkey an error occurs. This
137 function is deprecated. Applications should use providers instead of
138 engines (see provider(7) for details).
139
141 The following functions are only reliable with EVP_PKEYs that have been
142 assigned an internal key with EVP_PKEY_assign_*():
143 EVP_PKEY_get_id(), EVP_PKEY_get_base_id(), EVP_PKEY_type()
145 For EVP_PKEY key type checking purposes, EVP_PKEY_is_a(3) is more
147 generic.
148 For purposes of retrieving the name of the EVP_PKEY the function
150 EVP_PKEY_get0_type_name(3) is more generally useful.
151 The keys returned from the functions EVP_PKEY_get0_RSA(),
153 EVP_PKEY_get0_DSA(), EVP_PKEY_get0_DH() and EVP_PKEY_get0_EC_KEY() were
154 changed to have a "const" return type in OpenSSL 3.0. As described
155 above the keys returned may be cached copies of the key held in a
156 provider. Due to this, and unlike in earlier versions of OpenSSL, they
157 should be considered read-only copies of the key. Updates to these
158 keys will not be reflected back in the provider side key. The
159 EVP_PKEY_get1_RSA(), EVP_PKEY_get1_DSA(), EVP_PKEY_get1_DH() and
160 EVP_PKEY_get1_EC_KEY() functions were not changed to have a "const"
161 return type in order that applications can "free" the return value.
162 However applications should still consider them as read-only copies.
163
165 In accordance with the OpenSSL naming convention the key obtained from
166 or assigned to the pkey using the 1 functions must be freed as well as
167 pkey.
168 EVP_PKEY_assign_RSA(), EVP_PKEY_assign_DSA(), EVP_PKEY_assign_DH(),
170 EVP_PKEY_assign_EC_KEY(), EVP_PKEY_assign_POLY1305() and
171 EVP_PKEY_assign_SIPHASH() are implemented as macros.
172 EVP_PKEY_assign_EC_KEY() looks at the curve name id to determine if the
174 passed EC_KEY is an SM2(7) key, and will set the EVP_PKEY type to
175 EVP_PKEY_SM2 in that case, instead of EVP_PKEY_EC.
176 Most applications wishing to know a key type will simply call
178 EVP_PKEY_get_base_id() and will not care about the actual type: which
179 will be identical in almost all cases.
180 Previous versions of this document suggested using
182 EVP_PKEY_type(pkey->type) to determine the type of a key. Since
183 EVP_PKEY is now opaque this is no longer possible: the equivalent is
184 EVP_PKEY_get_base_id(pkey).
185 EVP_PKEY_set1_engine() is typically used by an ENGINE returning an HSM
187 key as part of its routine to load a private key.
188
190 EVP_PKEY_set1_RSA(), EVP_PKEY_set1_DSA(), EVP_PKEY_set1_DH() and
191 EVP_PKEY_set1_EC_KEY() return 1 for success or 0 for failure.
192 EVP_PKEY_get1_RSA(), EVP_PKEY_get1_DSA(), EVP_PKEY_get1_DH() and
194 EVP_PKEY_get1_EC_KEY() return the referenced key or NULL if an error
195 occurred.
196 EVP_PKEY_assign_RSA(), EVP_PKEY_assign_DSA(), EVP_PKEY_assign_DH(),
198 EVP_PKEY_assign_EC_KEY(), EVP_PKEY_assign_POLY1305() and
199 EVP_PKEY_assign_SIPHASH() return 1 for success and 0 for failure.
200 EVP_PKEY_get_base_id(), EVP_PKEY_get_id() and EVP_PKEY_type() return a
202 key type or NID_undef (equivalently EVP_PKEY_NONE) on error.
203 EVP_PKEY_set1_engine() returns 1 for success and 0 for failure.
205
207 EVP_PKEY_new(3), SM2(7)
208
210 The EVP_PKEY_id() and EVP_PKEY_base_id() functions were renamed to
211 include "get" in their names in OpenSSL 3.0, respectively. The old
212 names are kept as non-deprecated alias macros.
213 EVP_PKEY_set1_RSA, EVP_PKEY_set1_DSA, EVP_PKEY_set1_DH,
215 EVP_PKEY_set1_EC_KEY, EVP_PKEY_get1_RSA, EVP_PKEY_get1_DSA,
216 EVP_PKEY_get1_DH, EVP_PKEY_get1_EC_KEY, EVP_PKEY_get0_RSA,
217 EVP_PKEY_get0_DSA, EVP_PKEY_get0_DH, EVP_PKEY_get0_EC_KEY,
218 EVP_PKEY_assign_RSA, EVP_PKEY_assign_DSA, EVP_PKEY_assign_DH,
219 EVP_PKEY_assign_EC_KEY, EVP_PKEY_assign_POLY1305,
220 EVP_PKEY_assign_SIPHASH, EVP_PKEY_get0_hmac, EVP_PKEY_get0_poly1305,
221 EVP_PKEY_get0_siphash, EVP_PKEY_set1_engine and EVP_PKEY_get0_engine
222 were deprecated in OpenSSL 3.0.
223 The return value from EVP_PKEY_get0_RSA, EVP_PKEY_get0_DSA,
225 EVP_PKEY_get0_DH, EVP_PKEY_get0_EC_KEY were made const in OpenSSL 3.0.
226 The function EVP_PKEY_set_alias_type() was previously documented on
228 this page. It was removed in OpenSSL 3.0.
229
231 Copyright 2002-2023 The OpenSSL Project Authors. All Rights Reserved.
232 Licensed under the Apache License 2.0 (the "License"). You may not use
234 this file except in compliance with the License. You can obtain a copy
235 in the file LICENSE in the source distribution or at
236 <https://www.openssl.org/source/license.html>.
2373.1.1 2023-08-31 EVP_PKEY_SET1_RSA(3ossl)