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045e51cb | 1 | /* |
33388b44 | 2 | * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved. |
045e51cb RL |
3 | * |
4 | * Licensed under the Apache License 2.0 (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 | |
8 | */ | |
9 | ||
ada66e78 P |
10 | /* |
11 | * DH low level APIs are deprecated for public use, but still ok for | |
12 | * internal use. | |
13 | */ | |
14 | #include "internal/deprecated.h" | |
15 | ||
045e51cb RL |
16 | #include <openssl/err.h> |
17 | #include "prov/bio.h" /* ossl_prov_bio_printf() */ | |
18 | #include "prov/implementations.h" /* rsa_keymgmt_functions */ | |
19 | #include "prov/providercommonerr.h" /* PROV_R_BN_ERROR */ | |
7165593c SL |
20 | #include "internal/ffc.h" |
21 | #include "crypto/dh.h" | |
ece9304c | 22 | #include "encoder_local.h" |
045e51cb | 23 | |
363b1e5d | 24 | OSSL_FUNC_keymgmt_new_fn *ossl_prov_get_keymgmt_dh_new(void) |
045e51cb | 25 | { |
32b0645c RL |
26 | return ossl_prov_get_keymgmt_new(dh_keymgmt_functions); |
27 | } | |
28 | ||
363b1e5d | 29 | OSSL_FUNC_keymgmt_free_fn *ossl_prov_get_keymgmt_dh_free(void) |
32b0645c RL |
30 | { |
31 | return ossl_prov_get_keymgmt_free(dh_keymgmt_functions); | |
32 | } | |
33 | ||
363b1e5d | 34 | OSSL_FUNC_keymgmt_import_fn *ossl_prov_get_keymgmt_dh_import(void) |
32b0645c RL |
35 | { |
36 | return ossl_prov_get_keymgmt_import(dh_keymgmt_functions); | |
045e51cb RL |
37 | } |
38 | ||
39 | int ossl_prov_print_dh(BIO *out, DH *dh, enum dh_print_type type) | |
40 | { | |
41 | const char *type_label = NULL; | |
42 | const BIGNUM *priv_key = NULL, *pub_key = NULL; | |
7165593c | 43 | const BIGNUM *p = NULL; |
045e51cb RL |
44 | |
45 | switch (type) { | |
46 | case dh_print_priv: | |
47 | type_label = "DH Private-Key"; | |
48 | break; | |
49 | case dh_print_pub: | |
50 | type_label = "DH Public-Key"; | |
51 | break; | |
52 | case dh_print_params: | |
53 | type_label = "DH Parameters"; | |
54 | break; | |
55 | } | |
56 | ||
57 | if (type == dh_print_priv) { | |
58 | priv_key = DH_get0_priv_key(dh); | |
59 | if (priv_key == NULL) | |
60 | goto null_err; | |
61 | } | |
62 | ||
63 | if (type == dh_print_priv || type == dh_print_pub) { | |
64 | pub_key = DH_get0_pub_key(dh); | |
65 | if (pub_key == NULL) | |
66 | goto null_err; | |
67 | } | |
68 | ||
69 | p = DH_get0_p(dh); | |
7165593c | 70 | if (p == NULL) |
045e51cb RL |
71 | goto null_err; |
72 | ||
d40b42ab | 73 | if (BIO_printf(out, "%s: (%d bit)\n", type_label, BN_num_bits(p)) |
045e51cb RL |
74 | <= 0) |
75 | goto err; | |
76 | if (priv_key != NULL | |
7165593c | 77 | && !ossl_prov_print_labeled_bignum(out, "private-key:", priv_key)) |
045e51cb RL |
78 | goto err; |
79 | if (pub_key != NULL | |
7165593c | 80 | && !ossl_prov_print_labeled_bignum(out, "public-key:", pub_key)) |
045e51cb | 81 | goto err; |
7165593c | 82 | if (!ffc_params_prov_print(out, dh_get0_params(dh))) |
045e51cb RL |
83 | goto err; |
84 | ||
85 | return 1; | |
86 | err: | |
87 | return 0; | |
88 | null_err: | |
89 | ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_NULL_PARAMETER); | |
90 | goto err; | |
91 | } | |
92 | ||
93 | int ossl_prov_prepare_dh_params(const void *dh, int nid, | |
f552d900 | 94 | void **pstr, int *pstrtype) |
045e51cb RL |
95 | { |
96 | ASN1_STRING *params = ASN1_STRING_new(); | |
97 | ||
98 | if (params == NULL) { | |
99 | ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); | |
100 | return 0; | |
101 | } | |
102 | ||
103 | if (nid == EVP_PKEY_DHX) | |
104 | params->length = i2d_DHxparams(dh, ¶ms->data); | |
105 | else | |
106 | params->length = i2d_DHparams(dh, ¶ms->data); | |
107 | ||
108 | if (params->length <= 0) { | |
109 | ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); | |
110 | ASN1_STRING_free(params); | |
111 | return 0; | |
112 | } | |
113 | params->type = V_ASN1_SEQUENCE; | |
114 | ||
115 | *pstr = params; | |
116 | *pstrtype = V_ASN1_SEQUENCE; | |
117 | return 1; | |
118 | } | |
119 | ||
120 | int ossl_prov_dh_pub_to_der(const void *dh, unsigned char **pder) | |
121 | { | |
6cc1dfca RL |
122 | const BIGNUM *bn = NULL; |
123 | ASN1_INTEGER *pub_key = NULL; | |
045e51cb RL |
124 | int ret; |
125 | ||
6cc1dfca RL |
126 | if ((bn = DH_get0_pub_key(dh)) == NULL) { |
127 | ERR_raise(ERR_LIB_PROV, PROV_R_NOT_A_PUBLIC_KEY); | |
128 | return 0; | |
129 | } | |
130 | if ((pub_key = BN_to_ASN1_INTEGER(bn, NULL)) == NULL) { | |
045e51cb RL |
131 | ERR_raise(ERR_LIB_PROV, PROV_R_BN_ERROR); |
132 | return 0; | |
133 | } | |
134 | ||
135 | ret = i2d_ASN1_INTEGER(pub_key, pder); | |
136 | ||
137 | ASN1_STRING_clear_free(pub_key); | |
138 | return ret; | |
139 | } | |
140 | ||
141 | int ossl_prov_dh_priv_to_der(const void *dh, unsigned char **pder) | |
142 | { | |
6cc1dfca RL |
143 | const BIGNUM *bn = NULL; |
144 | ASN1_INTEGER *priv_key = NULL; | |
045e51cb RL |
145 | int ret; |
146 | ||
6cc1dfca RL |
147 | if ((bn = DH_get0_priv_key(dh)) == NULL) { |
148 | ERR_raise(ERR_LIB_PROV, PROV_R_NOT_A_PRIVATE_KEY); | |
149 | return 0; | |
150 | } | |
151 | if ((priv_key = BN_to_ASN1_INTEGER(bn, NULL)) == NULL) { | |
045e51cb RL |
152 | ERR_raise(ERR_LIB_PROV, PROV_R_BN_ERROR); |
153 | return 0; | |
154 | } | |
155 | ||
156 | ret = i2d_ASN1_INTEGER(priv_key, pder); | |
157 | ||
158 | ASN1_STRING_clear_free(priv_key); | |
159 | return ret; | |
160 | } | |
161 | ||
31d2daec SL |
162 | |
163 | int ossl_prov_dh_type_to_evp(const DH *dh) | |
164 | { | |
165 | return DH_test_flags(dh, DH_FLAG_TYPE_DHX) ? EVP_PKEY_DHX : EVP_PKEY_DH; | |
166 | } |