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Commit | Line | Data |
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0f113f3e | 1 | /* |
aa6bb135 | 2 | * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved. |
f733a5ef | 3 | * |
aa6bb135 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
f733a5ef DSH |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
11 | #include <stdlib.h> | |
b39fc560 | 12 | #include "internal/cryptlib.h" |
c20276e4 | 13 | #include <openssl/objects.h> |
f733a5ef | 14 | #include <openssl/evp.h> |
27af42f9 | 15 | #include "internal/evp_int.h" |
f733a5ef | 16 | |
b010b7c4 | 17 | #define M_check_autoarg(ctx, arg, arglen, err) \ |
0f113f3e MC |
18 | if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) \ |
19 | { \ | |
20 | size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey); \ | |
21 | if (!arg) \ | |
22 | { \ | |
23 | *arglen = pksize; \ | |
24 | return 1; \ | |
25 | } \ | |
26 | else if (*arglen < pksize) \ | |
27 | { \ | |
28 | EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/\ | |
29 | return 0; \ | |
30 | } \ | |
31 | } | |
b010b7c4 | 32 | |
cd763898 | 33 | int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx) |
0f113f3e MC |
34 | { |
35 | int ret; | |
36 | if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) { | |
37 | EVPerr(EVP_F_EVP_PKEY_SIGN_INIT, | |
38 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
39 | return -2; | |
40 | } | |
41 | ctx->operation = EVP_PKEY_OP_SIGN; | |
42 | if (!ctx->pmeth->sign_init) | |
43 | return 1; | |
44 | ret = ctx->pmeth->sign_init(ctx); | |
45 | if (ret <= 0) | |
46 | ctx->operation = EVP_PKEY_OP_UNDEFINED; | |
47 | return ret; | |
48 | } | |
f733a5ef DSH |
49 | |
50 | int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, | |
0f113f3e MC |
51 | unsigned char *sig, size_t *siglen, |
52 | const unsigned char *tbs, size_t tbslen) | |
53 | { | |
54 | if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) { | |
55 | EVPerr(EVP_F_EVP_PKEY_SIGN, | |
56 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
57 | return -2; | |
58 | } | |
59 | if (ctx->operation != EVP_PKEY_OP_SIGN) { | |
60 | EVPerr(EVP_F_EVP_PKEY_SIGN, EVP_R_OPERATON_NOT_INITIALIZED); | |
61 | return -1; | |
62 | } | |
63 | M_check_autoarg(ctx, sig, siglen, EVP_F_EVP_PKEY_SIGN) | |
64 | return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen); | |
65 | } | |
f733a5ef | 66 | |
cd763898 | 67 | int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx) |
0f113f3e MC |
68 | { |
69 | int ret; | |
70 | if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) { | |
71 | EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT, | |
72 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
73 | return -2; | |
74 | } | |
75 | ctx->operation = EVP_PKEY_OP_VERIFY; | |
76 | if (!ctx->pmeth->verify_init) | |
77 | return 1; | |
78 | ret = ctx->pmeth->verify_init(ctx); | |
79 | if (ret <= 0) | |
80 | ctx->operation = EVP_PKEY_OP_UNDEFINED; | |
81 | return ret; | |
82 | } | |
f733a5ef DSH |
83 | |
84 | int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, | |
0f113f3e MC |
85 | const unsigned char *sig, size_t siglen, |
86 | const unsigned char *tbs, size_t tbslen) | |
87 | { | |
88 | if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) { | |
89 | EVPerr(EVP_F_EVP_PKEY_VERIFY, | |
90 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
91 | return -2; | |
92 | } | |
93 | if (ctx->operation != EVP_PKEY_OP_VERIFY) { | |
94 | EVPerr(EVP_F_EVP_PKEY_VERIFY, EVP_R_OPERATON_NOT_INITIALIZED); | |
95 | return -1; | |
96 | } | |
97 | return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen); | |
98 | } | |
f733a5ef | 99 | |
cd763898 | 100 | int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx) |
0f113f3e MC |
101 | { |
102 | int ret; | |
103 | if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) { | |
104 | EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT, | |
105 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
106 | return -2; | |
107 | } | |
108 | ctx->operation = EVP_PKEY_OP_VERIFYRECOVER; | |
109 | if (!ctx->pmeth->verify_recover_init) | |
110 | return 1; | |
111 | ret = ctx->pmeth->verify_recover_init(ctx); | |
112 | if (ret <= 0) | |
113 | ctx->operation = EVP_PKEY_OP_UNDEFINED; | |
114 | return ret; | |
115 | } | |
f733a5ef DSH |
116 | |
117 | int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, | |
0f113f3e MC |
118 | unsigned char *rout, size_t *routlen, |
119 | const unsigned char *sig, size_t siglen) | |
120 | { | |
121 | if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) { | |
122 | EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, | |
123 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
124 | return -2; | |
125 | } | |
126 | if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) { | |
127 | EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, EVP_R_OPERATON_NOT_INITIALIZED); | |
128 | return -1; | |
129 | } | |
130 | M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER) | |
131 | return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen); | |
132 | } | |
f733a5ef | 133 | |
cd763898 | 134 | int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx) |
0f113f3e MC |
135 | { |
136 | int ret; | |
137 | if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) { | |
138 | EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT, | |
139 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
140 | return -2; | |
141 | } | |
142 | ctx->operation = EVP_PKEY_OP_ENCRYPT; | |
143 | if (!ctx->pmeth->encrypt_init) | |
144 | return 1; | |
145 | ret = ctx->pmeth->encrypt_init(ctx); | |
146 | if (ret <= 0) | |
147 | ctx->operation = EVP_PKEY_OP_UNDEFINED; | |
148 | return ret; | |
149 | } | |
f733a5ef DSH |
150 | |
151 | int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, | |
0f113f3e MC |
152 | unsigned char *out, size_t *outlen, |
153 | const unsigned char *in, size_t inlen) | |
154 | { | |
155 | if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) { | |
156 | EVPerr(EVP_F_EVP_PKEY_ENCRYPT, | |
157 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
158 | return -2; | |
159 | } | |
160 | if (ctx->operation != EVP_PKEY_OP_ENCRYPT) { | |
161 | EVPerr(EVP_F_EVP_PKEY_ENCRYPT, EVP_R_OPERATON_NOT_INITIALIZED); | |
162 | return -1; | |
163 | } | |
164 | M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT) | |
165 | return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen); | |
166 | } | |
f733a5ef | 167 | |
cd763898 | 168 | int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx) |
0f113f3e MC |
169 | { |
170 | int ret; | |
171 | if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) { | |
172 | EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT, | |
173 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
174 | return -2; | |
175 | } | |
176 | ctx->operation = EVP_PKEY_OP_DECRYPT; | |
177 | if (!ctx->pmeth->decrypt_init) | |
178 | return 1; | |
179 | ret = ctx->pmeth->decrypt_init(ctx); | |
180 | if (ret <= 0) | |
181 | ctx->operation = EVP_PKEY_OP_UNDEFINED; | |
182 | return ret; | |
183 | } | |
f733a5ef DSH |
184 | |
185 | int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, | |
0f113f3e MC |
186 | unsigned char *out, size_t *outlen, |
187 | const unsigned char *in, size_t inlen) | |
188 | { | |
189 | if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) { | |
190 | EVPerr(EVP_F_EVP_PKEY_DECRYPT, | |
191 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
192 | return -2; | |
193 | } | |
194 | if (ctx->operation != EVP_PKEY_OP_DECRYPT) { | |
195 | EVPerr(EVP_F_EVP_PKEY_DECRYPT, EVP_R_OPERATON_NOT_INITIALIZED); | |
196 | return -1; | |
197 | } | |
198 | M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT) | |
199 | return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen); | |
200 | } | |
d87e6152 DSH |
201 | |
202 | int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx) | |
0f113f3e MC |
203 | { |
204 | int ret; | |
205 | if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) { | |
206 | EVPerr(EVP_F_EVP_PKEY_DERIVE_INIT, | |
207 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
208 | return -2; | |
209 | } | |
210 | ctx->operation = EVP_PKEY_OP_DERIVE; | |
211 | if (!ctx->pmeth->derive_init) | |
212 | return 1; | |
213 | ret = ctx->pmeth->derive_init(ctx); | |
214 | if (ret <= 0) | |
215 | ctx->operation = EVP_PKEY_OP_UNDEFINED; | |
216 | return ret; | |
217 | } | |
d87e6152 | 218 | |
ffb1ac67 | 219 | int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer) |
0f113f3e MC |
220 | { |
221 | int ret; | |
222 | if (!ctx || !ctx->pmeth | |
223 | || !(ctx->pmeth->derive || ctx->pmeth->encrypt || ctx->pmeth->decrypt) | |
224 | || !ctx->pmeth->ctrl) { | |
225 | EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, | |
226 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
227 | return -2; | |
228 | } | |
229 | if (ctx->operation != EVP_PKEY_OP_DERIVE | |
230 | && ctx->operation != EVP_PKEY_OP_ENCRYPT | |
231 | && ctx->operation != EVP_PKEY_OP_DECRYPT) { | |
232 | EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, | |
233 | EVP_R_OPERATON_NOT_INITIALIZED); | |
234 | return -1; | |
235 | } | |
ffb1ac67 | 236 | |
0f113f3e | 237 | ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer); |
ffb1ac67 | 238 | |
0f113f3e MC |
239 | if (ret <= 0) |
240 | return ret; | |
ffb1ac67 | 241 | |
0f113f3e MC |
242 | if (ret == 2) |
243 | return 1; | |
ffb1ac67 | 244 | |
0f113f3e MC |
245 | if (!ctx->pkey) { |
246 | EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_NO_KEY_SET); | |
247 | return -1; | |
248 | } | |
ffb1ac67 | 249 | |
0f113f3e MC |
250 | if (ctx->pkey->type != peer->type) { |
251 | EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_KEY_TYPES); | |
252 | return -1; | |
253 | } | |
ffb1ac67 | 254 | |
0f113f3e MC |
255 | /* |
256 | * ran@cryptocom.ru: For clarity. The error is if parameters in peer are | |
257 | * present (!missing) but don't match. EVP_PKEY_cmp_parameters may return | |
258 | * 1 (match), 0 (don't match) and -2 (comparison is not defined). -1 | |
259 | * (different key types) is impossible here because it is checked earlier. | |
260 | * -2 is OK for us here, as well as 1, so we can check for 0 only. | |
261 | */ | |
262 | if (!EVP_PKEY_missing_parameters(peer) && | |
263 | !EVP_PKEY_cmp_parameters(ctx->pkey, peer)) { | |
264 | EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_PARAMETERS); | |
265 | return -1; | |
266 | } | |
ffb1ac67 | 267 | |
c5ba2d99 | 268 | EVP_PKEY_free(ctx->peerkey); |
0f113f3e | 269 | ctx->peerkey = peer; |
ffb1ac67 | 270 | |
0f113f3e | 271 | ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer); |
ffb1ac67 | 272 | |
0f113f3e MC |
273 | if (ret <= 0) { |
274 | ctx->peerkey = NULL; | |
275 | return ret; | |
276 | } | |
ffb1ac67 | 277 | |
03273d61 | 278 | EVP_PKEY_up_ref(peer); |
0f113f3e MC |
279 | return 1; |
280 | } | |
ffb1ac67 | 281 | |
eaff5a14 | 282 | int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *pkeylen) |
0f113f3e MC |
283 | { |
284 | if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) { | |
285 | EVPerr(EVP_F_EVP_PKEY_DERIVE, | |
286 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
287 | return -2; | |
288 | } | |
289 | if (ctx->operation != EVP_PKEY_OP_DERIVE) { | |
290 | EVPerr(EVP_F_EVP_PKEY_DERIVE, EVP_R_OPERATON_NOT_INITIALIZED); | |
291 | return -1; | |
292 | } | |
293 | M_check_autoarg(ctx, key, pkeylen, EVP_F_EVP_PKEY_DERIVE) | |
294 | return ctx->pmeth->derive(ctx, key, pkeylen); | |
295 | } |