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Commit | Line | Data |
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0f113f3e | 1 | /* |
62867571 | 2 | * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved. |
f5cda4cb | 3 | * |
62867571 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 | |
f5cda4cb DSH |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
11 | #include <stdlib.h> | |
b39fc560 | 12 | #include "internal/cryptlib.h" |
c20276e4 | 13 | #include <openssl/objects.h> |
f5cda4cb | 14 | #include <openssl/evp.h> |
68c29f61 | 15 | #include "internal/bn_int.h" |
2aee35d3 | 16 | #include "internal/asn1_int.h" |
27af42f9 | 17 | #include "internal/evp_int.h" |
f5cda4cb DSH |
18 | |
19 | int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx) | |
0f113f3e MC |
20 | { |
21 | int ret; | |
22 | if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen) { | |
23 | EVPerr(EVP_F_EVP_PKEY_PARAMGEN_INIT, | |
24 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
25 | return -2; | |
26 | } | |
27 | ctx->operation = EVP_PKEY_OP_PARAMGEN; | |
28 | if (!ctx->pmeth->paramgen_init) | |
29 | return 1; | |
30 | ret = ctx->pmeth->paramgen_init(ctx); | |
31 | if (ret <= 0) | |
32 | ctx->operation = EVP_PKEY_OP_UNDEFINED; | |
33 | return ret; | |
34 | } | |
f5cda4cb DSH |
35 | |
36 | int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey) | |
0f113f3e MC |
37 | { |
38 | int ret; | |
39 | if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen) { | |
40 | EVPerr(EVP_F_EVP_PKEY_PARAMGEN, | |
41 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
42 | return -2; | |
43 | } | |
44 | ||
45 | if (ctx->operation != EVP_PKEY_OP_PARAMGEN) { | |
46 | EVPerr(EVP_F_EVP_PKEY_PARAMGEN, EVP_R_OPERATON_NOT_INITIALIZED); | |
47 | return -1; | |
48 | } | |
49 | ||
e34c66c6 | 50 | if (ppkey == NULL) |
0f113f3e MC |
51 | return -1; |
52 | ||
e34c66c6 | 53 | if (*ppkey == NULL) |
0f113f3e MC |
54 | *ppkey = EVP_PKEY_new(); |
55 | ||
e34c66c6 EK |
56 | if (*ppkey == NULL) { |
57 | EVPerr(EVP_F_EVP_PKEY_PARAMGEN, ERR_R_MALLOC_FAILURE); | |
58 | return -1; | |
59 | } | |
60 | ||
0f113f3e MC |
61 | ret = ctx->pmeth->paramgen(ctx, *ppkey); |
62 | if (ret <= 0) { | |
63 | EVP_PKEY_free(*ppkey); | |
64 | *ppkey = NULL; | |
65 | } | |
66 | return ret; | |
67 | } | |
f5cda4cb DSH |
68 | |
69 | int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx) | |
0f113f3e MC |
70 | { |
71 | int ret; | |
72 | if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) { | |
73 | EVPerr(EVP_F_EVP_PKEY_KEYGEN_INIT, | |
74 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
75 | return -2; | |
76 | } | |
77 | ctx->operation = EVP_PKEY_OP_KEYGEN; | |
78 | if (!ctx->pmeth->keygen_init) | |
79 | return 1; | |
80 | ret = ctx->pmeth->keygen_init(ctx); | |
81 | if (ret <= 0) | |
82 | ctx->operation = EVP_PKEY_OP_UNDEFINED; | |
83 | return ret; | |
84 | } | |
f5cda4cb DSH |
85 | |
86 | int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey) | |
0f113f3e MC |
87 | { |
88 | int ret; | |
89 | ||
90 | if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) { | |
91 | EVPerr(EVP_F_EVP_PKEY_KEYGEN, | |
92 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
93 | return -2; | |
94 | } | |
95 | if (ctx->operation != EVP_PKEY_OP_KEYGEN) { | |
96 | EVPerr(EVP_F_EVP_PKEY_KEYGEN, EVP_R_OPERATON_NOT_INITIALIZED); | |
97 | return -1; | |
98 | } | |
99 | ||
90945fa3 | 100 | if (ppkey == NULL) |
0f113f3e MC |
101 | return -1; |
102 | ||
90945fa3 | 103 | if (*ppkey == NULL) |
0f113f3e | 104 | *ppkey = EVP_PKEY_new(); |
90945fa3 MC |
105 | if (*ppkey == NULL) |
106 | return -1; | |
0f113f3e MC |
107 | |
108 | ret = ctx->pmeth->keygen(ctx, *ppkey); | |
109 | if (ret <= 0) { | |
110 | EVP_PKEY_free(*ppkey); | |
111 | *ppkey = NULL; | |
112 | } | |
113 | return ret; | |
114 | } | |
f5cda4cb DSH |
115 | |
116 | void EVP_PKEY_CTX_set_cb(EVP_PKEY_CTX *ctx, EVP_PKEY_gen_cb *cb) | |
0f113f3e MC |
117 | { |
118 | ctx->pkey_gencb = cb; | |
119 | } | |
f5cda4cb | 120 | |
b28dea4e | 121 | EVP_PKEY_gen_cb *EVP_PKEY_CTX_get_cb(EVP_PKEY_CTX *ctx) |
0f113f3e MC |
122 | { |
123 | return ctx->pkey_gencb; | |
124 | } | |
b28dea4e | 125 | |
0f113f3e MC |
126 | /* |
127 | * "translation callback" to call EVP_PKEY_CTX callbacks using BN_GENCB style | |
128 | * callbacks. | |
f5cda4cb DSH |
129 | */ |
130 | ||
131 | static int trans_cb(int a, int b, BN_GENCB *gcb) | |
0f113f3e MC |
132 | { |
133 | EVP_PKEY_CTX *ctx = BN_GENCB_get_arg(gcb); | |
134 | ctx->keygen_info[0] = a; | |
135 | ctx->keygen_info[1] = b; | |
136 | return ctx->pkey_gencb(ctx); | |
137 | } | |
f5cda4cb DSH |
138 | |
139 | void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx) | |
0f113f3e MC |
140 | { |
141 | BN_GENCB_set(cb, trans_cb, ctx); | |
142 | } | |
f5cda4cb DSH |
143 | |
144 | int EVP_PKEY_CTX_get_keygen_info(EVP_PKEY_CTX *ctx, int idx) | |
0f113f3e MC |
145 | { |
146 | if (idx == -1) | |
147 | return ctx->keygen_info_count; | |
148 | if (idx < 0 || idx > ctx->keygen_info_count) | |
149 | return 0; | |
150 | return ctx->keygen_info[idx]; | |
151 | } | |
2022cfe0 DSH |
152 | |
153 | EVP_PKEY *EVP_PKEY_new_mac_key(int type, ENGINE *e, | |
0f113f3e MC |
154 | const unsigned char *key, int keylen) |
155 | { | |
156 | EVP_PKEY_CTX *mac_ctx = NULL; | |
157 | EVP_PKEY *mac_key = NULL; | |
158 | mac_ctx = EVP_PKEY_CTX_new_id(type, e); | |
159 | if (!mac_ctx) | |
160 | return NULL; | |
161 | if (EVP_PKEY_keygen_init(mac_ctx) <= 0) | |
162 | goto merr; | |
eff1a4d2 | 163 | if (EVP_PKEY_CTX_set_mac_key(mac_ctx, key, keylen) <= 0) |
0f113f3e MC |
164 | goto merr; |
165 | if (EVP_PKEY_keygen(mac_ctx, &mac_key) <= 0) | |
166 | goto merr; | |
167 | merr: | |
c5ba2d99 | 168 | EVP_PKEY_CTX_free(mac_ctx); |
0f113f3e MC |
169 | return mac_key; |
170 | } | |
2aee35d3 PY |
171 | |
172 | int EVP_PKEY_check(EVP_PKEY_CTX *ctx) | |
173 | { | |
174 | EVP_PKEY *pkey = ctx->pkey; | |
175 | ||
176 | if (pkey == NULL) { | |
177 | EVPerr(EVP_F_EVP_PKEY_CHECK, EVP_R_NO_KEY_SET); | |
178 | return 0; | |
179 | } | |
180 | ||
181 | /* call customized check function first */ | |
182 | if (ctx->pmeth->check != NULL) | |
183 | return ctx->pmeth->check(pkey); | |
184 | ||
185 | /* use default check function in ameth */ | |
186 | if (pkey->ameth == NULL || pkey->ameth->pkey_check == NULL) { | |
187 | EVPerr(EVP_F_EVP_PKEY_CHECK, | |
188 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
189 | return -2; | |
190 | } | |
191 | ||
192 | return pkey->ameth->pkey_check(pkey); | |
193 | } |