1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
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)"
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
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.] */
57 #ifndef OPENSSL_HEADER_EVP_INTERNAL_H
58 #define OPENSSL_HEADER_EVP_INTERNAL_H
60 #include <openssl/base.h>
62 #include <openssl/rsa.h>
64 #if defined(__cplusplus)
69 struct evp_pkey_asn1_method_st {
74 // pub_decode decodes |params| and |key| as a SubjectPublicKeyInfo
75 // and writes the result into |out|. It returns one on success and zero on
76 // error. |params| is the AlgorithmIdentifier after the OBJECT IDENTIFIER
77 // type field, and |key| is the contents of the subjectPublicKey with the
78 // leading padding byte checked and removed. Although X.509 uses BIT STRINGs
79 // to represent SubjectPublicKeyInfo, every key type defined encodes the key
80 // as a byte string with the same conversion to BIT STRING.
81 int (*pub_decode)(EVP_PKEY *out, CBS *params, CBS *key);
83 // pub_encode encodes |key| as a SubjectPublicKeyInfo and appends the result
84 // to |out|. It returns one on success and zero on error.
85 int (*pub_encode)(CBB *out, const EVP_PKEY *key);
87 int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b);
89 // priv_decode decodes |params| and |key| as a PrivateKeyInfo and writes the
90 // result into |out|. It returns one on success and zero on error. |params| is
91 // the AlgorithmIdentifier after the OBJECT IDENTIFIER type field, and |key|
92 // is the contents of the OCTET STRING privateKey field.
93 int (*priv_decode)(EVP_PKEY *out, CBS *params, CBS *key);
95 // priv_encode encodes |key| as a PrivateKeyInfo and appends the result to
96 // |out|. It returns one on success and zero on error.
97 int (*priv_encode)(CBB *out, const EVP_PKEY *key);
99 // pkey_opaque returns 1 if the |pk| is opaque. Opaque keys are backed by
100 // custom implementations which do not expose key material and parameters.
101 int (*pkey_opaque)(const EVP_PKEY *pk);
103 int (*pkey_size)(const EVP_PKEY *pk);
104 int (*pkey_bits)(const EVP_PKEY *pk);
106 int (*param_missing)(const EVP_PKEY *pk);
107 int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from);
108 int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b);
110 void (*pkey_free)(EVP_PKEY *pkey);
111 } /* EVP_PKEY_ASN1_METHOD */;
114 #define EVP_PKEY_OP_UNDEFINED 0
115 #define EVP_PKEY_OP_KEYGEN (1 << 2)
116 #define EVP_PKEY_OP_SIGN (1 << 3)
117 #define EVP_PKEY_OP_VERIFY (1 << 4)
118 #define EVP_PKEY_OP_VERIFYRECOVER (1 << 5)
119 #define EVP_PKEY_OP_ENCRYPT (1 << 6)
120 #define EVP_PKEY_OP_DECRYPT (1 << 7)
121 #define EVP_PKEY_OP_DERIVE (1 << 8)
123 #define EVP_PKEY_OP_TYPE_SIG \
124 (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY | EVP_PKEY_OP_VERIFYRECOVER)
126 #define EVP_PKEY_OP_TYPE_CRYPT (EVP_PKEY_OP_ENCRYPT | EVP_PKEY_OP_DECRYPT)
128 #define EVP_PKEY_OP_TYPE_NOGEN \
129 (EVP_PKEY_OP_SIG | EVP_PKEY_OP_CRYPT | EVP_PKEY_OP_DERIVE)
131 #define EVP_PKEY_OP_TYPE_GEN EVP_PKEY_OP_KEYGEN
133 // EVP_PKEY_CTX_ctrl performs |cmd| on |ctx|. The |keytype| and |optype|
134 // arguments can be -1 to specify that any type and operation are acceptable,
135 // otherwise |keytype| must match the type of |ctx| and the bits of |optype|
136 // must intersect the operation flags set on |ctx|.
138 // The |p1| and |p2| arguments depend on the value of |cmd|.
140 // It returns one on success and zero on error.
141 OPENSSL_EXPORT int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
142 int cmd, int p1, void *p2);
144 #define EVP_PKEY_CTRL_MD 1
145 #define EVP_PKEY_CTRL_GET_MD 2
147 // EVP_PKEY_CTRL_PEER_KEY is called with different values of |p1|:
148 // 0: Is called from |EVP_PKEY_derive_set_peer| and |p2| contains a peer key.
149 // If the return value is <= 0, the key is rejected.
150 // 1: Is called at the end of |EVP_PKEY_derive_set_peer| and |p2| contains a
151 // peer key. If the return value is <= 0, the key is rejected.
152 // 2: Is called with |p2| == NULL to test whether the peer's key was used.
153 // (EC)DH always return one in this case.
154 // 3: Is called with |p2| == NULL to set whether the peer's key was used.
155 // (EC)DH always return one in this case. This was only used for GOST.
156 #define EVP_PKEY_CTRL_PEER_KEY 3
158 // EVP_PKEY_ALG_CTRL is the base value from which key-type specific ctrl
159 // commands are numbered.
160 #define EVP_PKEY_ALG_CTRL 0x1000
162 #define EVP_PKEY_CTRL_RSA_PADDING (EVP_PKEY_ALG_CTRL + 1)
163 #define EVP_PKEY_CTRL_GET_RSA_PADDING (EVP_PKEY_ALG_CTRL + 2)
164 #define EVP_PKEY_CTRL_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 3)
165 #define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 4)
166 #define EVP_PKEY_CTRL_RSA_KEYGEN_BITS (EVP_PKEY_ALG_CTRL + 5)
167 #define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 6)
168 #define EVP_PKEY_CTRL_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 7)
169 #define EVP_PKEY_CTRL_GET_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 8)
170 #define EVP_PKEY_CTRL_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 9)
171 #define EVP_PKEY_CTRL_GET_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 10)
172 #define EVP_PKEY_CTRL_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 11)
173 #define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)
175 struct evp_pkey_ctx_st {
176 // Method associated with this operation
177 const EVP_PKEY_METHOD *pmeth;
178 // Engine that implements this method or NULL if builtin
182 // Peer key for key agreement, may be NULL
184 // operation contains one of the |EVP_PKEY_OP_*| values.
186 // Algorithm specific data
188 } /* EVP_PKEY_CTX */;
190 struct evp_pkey_method_st {
193 int (*init)(EVP_PKEY_CTX *ctx);
194 int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src);
195 void (*cleanup)(EVP_PKEY_CTX *ctx);
197 int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
199 int (*sign)(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
200 const uint8_t *tbs, size_t tbslen);
202 int (*sign_message)(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
203 const uint8_t *tbs, size_t tbslen);
205 int (*verify)(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t siglen,
206 const uint8_t *tbs, size_t tbslen);
208 int (*verify_message)(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t siglen,
209 const uint8_t *tbs, size_t tbslen);
211 int (*verify_recover)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *out_len,
212 const uint8_t *sig, size_t sig_len);
214 int (*encrypt)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
215 const uint8_t *in, size_t inlen);
217 int (*decrypt)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
218 const uint8_t *in, size_t inlen);
220 int (*derive)(EVP_PKEY_CTX *ctx, uint8_t *key, size_t *keylen);
222 int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
223 } /* EVP_PKEY_METHOD */;
229 // Shift the location of the public key to align with where it is in the
230 // private key representation.
238 extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meth;
239 extern const EVP_PKEY_ASN1_METHOD ec_asn1_meth;
240 extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meth;
241 extern const EVP_PKEY_ASN1_METHOD ed25519_asn1_meth;
243 extern const EVP_PKEY_METHOD rsa_pkey_meth;
244 extern const EVP_PKEY_METHOD ec_pkey_meth;
245 extern const EVP_PKEY_METHOD ed25519_pkey_meth;
248 #if defined(__cplusplus)
252 #endif // OPENSSL_HEADER_EVP_INTERNAL_H