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264b789b | 1 | /* |
33388b44 | 2 | * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved. |
264b789b 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 | ||
f41ac0ee P |
10 | /* |
11 | * DSA low level APIs are deprecated for public use, but still ok for | |
12 | * internal use. | |
13 | */ | |
14 | #include "internal/deprecated.h" | |
15 | ||
264b789b RL |
16 | #include <openssl/dsa.h> |
17 | #include <openssl/err.h> | |
18 | #include "prov/bio.h" /* ossl_prov_bio_printf() */ | |
19 | #include "prov/implementations.h" /* rsa_keymgmt_functions */ | |
20 | #include "prov/providercommonerr.h" /* PROV_R_BN_ERROR */ | |
21 | #include "serializer_local.h" | |
b03ec3b5 SL |
22 | #include "internal/ffc.h" |
23 | #include "crypto/dsa.h" | |
264b789b | 24 | |
32b0645c | 25 | OSSL_OP_keymgmt_new_fn *ossl_prov_get_keymgmt_dsa_new(void) |
264b789b | 26 | { |
32b0645c RL |
27 | return ossl_prov_get_keymgmt_new(dsa_keymgmt_functions); |
28 | } | |
29 | ||
30 | OSSL_OP_keymgmt_free_fn *ossl_prov_get_keymgmt_dsa_free(void) | |
31 | { | |
32 | return ossl_prov_get_keymgmt_free(dsa_keymgmt_functions); | |
33 | } | |
34 | ||
35 | OSSL_OP_keymgmt_import_fn *ossl_prov_get_keymgmt_dsa_import(void) | |
36 | { | |
37 | return ossl_prov_get_keymgmt_import(dsa_keymgmt_functions); | |
264b789b RL |
38 | } |
39 | ||
40 | int ossl_prov_print_dsa(BIO *out, DSA *dsa, enum dsa_print_type type) | |
41 | { | |
42 | const char *type_label = NULL; | |
43 | const BIGNUM *priv_key = NULL, *pub_key = NULL; | |
b03ec3b5 | 44 | const BIGNUM *p = NULL; |
264b789b RL |
45 | |
46 | ||
47 | switch (type) { | |
48 | case dsa_print_priv: | |
49 | type_label = "Private-Key"; | |
50 | break; | |
51 | case dsa_print_pub: | |
52 | type_label = "Public-Key"; | |
53 | break; | |
54 | case dsa_print_params: | |
55 | type_label = "DSA-Parameters"; | |
56 | break; | |
57 | } | |
58 | ||
59 | if (type == dsa_print_priv) { | |
60 | priv_key = DSA_get0_priv_key(dsa); | |
61 | if (priv_key == NULL) | |
62 | goto null_err; | |
63 | } | |
64 | ||
65 | if (type == dsa_print_priv || type == dsa_print_pub) { | |
66 | pub_key = DSA_get0_pub_key(dsa); | |
67 | if (pub_key == NULL) | |
68 | goto null_err; | |
69 | } | |
70 | ||
264b789b | 71 | |
b03ec3b5 SL |
72 | p = DSA_get0_p(dsa); |
73 | if (p == NULL) | |
264b789b RL |
74 | goto null_err; |
75 | ||
d40b42ab | 76 | if (BIO_printf(out, "%s: (%d bit)\n", type_label, BN_num_bits(p)) <= 0) |
264b789b RL |
77 | goto err; |
78 | if (priv_key != NULL | |
79 | && !ossl_prov_print_labeled_bignum(out, "priv:", priv_key)) | |
80 | goto err; | |
81 | if (pub_key != NULL | |
82 | && !ossl_prov_print_labeled_bignum(out, "pub: ", pub_key)) | |
83 | goto err; | |
b03ec3b5 | 84 | if (!ffc_params_prov_print(out, dsa_get0_params(dsa))) |
264b789b RL |
85 | goto err; |
86 | ||
87 | return 1; | |
88 | err: | |
89 | return 0; | |
90 | null_err: | |
91 | ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_NULL_PARAMETER); | |
92 | goto err; | |
93 | } | |
94 | ||
95 | int ossl_prov_prepare_dsa_params(const void *dsa, int nid, | |
f552d900 | 96 | void **pstr, int *pstrtype) |
264b789b RL |
97 | { |
98 | ASN1_STRING *params = ASN1_STRING_new(); | |
99 | ||
100 | if (params == NULL) { | |
101 | ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); | |
102 | return 0; | |
103 | } | |
104 | ||
105 | params->length = i2d_DSAparams(dsa, ¶ms->data); | |
106 | ||
107 | if (params->length <= 0) { | |
108 | ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); | |
109 | ASN1_STRING_free(params); | |
110 | return 0; | |
111 | } | |
112 | ||
113 | *pstrtype = V_ASN1_SEQUENCE; | |
114 | *pstr = params; | |
115 | return 1; | |
116 | } | |
117 | ||
118 | int ossl_prov_prepare_all_dsa_params(const void *dsa, int nid, | |
f552d900 | 119 | void **pstr, int *pstrtype) |
264b789b RL |
120 | { |
121 | const BIGNUM *p = DSA_get0_p(dsa); | |
122 | const BIGNUM *q = DSA_get0_q(dsa); | |
123 | const BIGNUM *g = DSA_get0_g(dsa); | |
124 | ||
125 | if (p != NULL && q != NULL && g != NULL) | |
126 | return ossl_prov_prepare_dsa_params(dsa, nid, pstr, pstrtype); | |
127 | ||
128 | *pstr = NULL; | |
129 | *pstrtype = V_ASN1_UNDEF; | |
130 | return 1; | |
131 | } | |
132 | ||
133 | int ossl_prov_dsa_pub_to_der(const void *dsa, unsigned char **pder) | |
134 | { | |
135 | ASN1_INTEGER *pub_key = BN_to_ASN1_INTEGER(DSA_get0_pub_key(dsa), NULL); | |
136 | int ret; | |
137 | ||
138 | if (pub_key == NULL) { | |
139 | ERR_raise(ERR_LIB_PROV, PROV_R_BN_ERROR); | |
140 | return 0; | |
141 | } | |
142 | ||
143 | ret = i2d_ASN1_INTEGER(pub_key, pder); | |
144 | ||
145 | ASN1_STRING_clear_free(pub_key); | |
146 | return ret; | |
147 | } | |
148 | ||
149 | int ossl_prov_dsa_priv_to_der(const void *dsa, unsigned char **pder) | |
150 | { | |
151 | ASN1_INTEGER *priv_key = BN_to_ASN1_INTEGER(DSA_get0_priv_key(dsa), NULL); | |
152 | int ret; | |
153 | ||
154 | if (priv_key == NULL) { | |
155 | ERR_raise(ERR_LIB_PROV, PROV_R_BN_ERROR); | |
156 | return 0; | |
157 | } | |
158 | ||
159 | ret = i2d_ASN1_INTEGER(priv_key, pder); | |
160 | ||
161 | ASN1_STRING_clear_free(priv_key); | |
162 | return ret; | |
163 | } |