2 * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
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
11 * DH low level APIs are deprecated for public use, but still ok for
14 #include "internal/deprecated.h"
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 */
20 #include "internal/ffc.h"
21 #include "crypto/dh.h"
22 #include "encoder_local.h"
24 OSSL_FUNC_keymgmt_new_fn
*ossl_prov_get_keymgmt_dh_new(void)
26 return ossl_prov_get_keymgmt_new(dh_keymgmt_functions
);
29 OSSL_FUNC_keymgmt_free_fn
*ossl_prov_get_keymgmt_dh_free(void)
31 return ossl_prov_get_keymgmt_free(dh_keymgmt_functions
);
34 OSSL_FUNC_keymgmt_import_fn
*ossl_prov_get_keymgmt_dh_import(void)
36 return ossl_prov_get_keymgmt_import(dh_keymgmt_functions
);
39 int ossl_prov_print_dh(BIO
*out
, DH
*dh
, enum dh_print_type type
)
41 const char *type_label
= NULL
;
42 const BIGNUM
*priv_key
= NULL
, *pub_key
= NULL
;
43 const BIGNUM
*p
= NULL
;
47 type_label
= "DH Private-Key";
50 type_label
= "DH Public-Key";
53 type_label
= "DH Parameters";
57 if (type
== dh_print_priv
) {
58 priv_key
= DH_get0_priv_key(dh
);
63 if (type
== dh_print_priv
|| type
== dh_print_pub
) {
64 pub_key
= DH_get0_pub_key(dh
);
73 if (BIO_printf(out
, "%s: (%d bit)\n", type_label
, BN_num_bits(p
))
77 && !ossl_prov_print_labeled_bignum(out
, "private-key:", priv_key
))
80 && !ossl_prov_print_labeled_bignum(out
, "public-key:", pub_key
))
82 if (!ffc_params_prov_print(out
, dh_get0_params(dh
)))
89 ERR_raise(ERR_LIB_PROV
, ERR_R_PASSED_NULL_PARAMETER
);
93 int ossl_prov_prepare_dh_params(const void *dh
, int nid
,
94 void **pstr
, int *pstrtype
)
96 ASN1_STRING
*params
= ASN1_STRING_new();
99 ERR_raise(ERR_LIB_PROV
, ERR_R_MALLOC_FAILURE
);
103 if (nid
== EVP_PKEY_DHX
)
104 params
->length
= i2d_DHxparams(dh
, ¶ms
->data
);
106 params
->length
= i2d_DHparams(dh
, ¶ms
->data
);
108 if (params
->length
<= 0) {
109 ERR_raise(ERR_LIB_PROV
, ERR_R_MALLOC_FAILURE
);
110 ASN1_STRING_free(params
);
113 params
->type
= V_ASN1_SEQUENCE
;
116 *pstrtype
= V_ASN1_SEQUENCE
;
120 int ossl_prov_dh_pub_to_der(const void *dh
, unsigned char **pder
)
122 const BIGNUM
*bn
= NULL
;
123 ASN1_INTEGER
*pub_key
= NULL
;
126 if ((bn
= DH_get0_pub_key(dh
)) == NULL
) {
127 ERR_raise(ERR_LIB_PROV
, PROV_R_NOT_A_PUBLIC_KEY
);
130 if ((pub_key
= BN_to_ASN1_INTEGER(bn
, NULL
)) == NULL
) {
131 ERR_raise(ERR_LIB_PROV
, PROV_R_BN_ERROR
);
135 ret
= i2d_ASN1_INTEGER(pub_key
, pder
);
137 ASN1_STRING_clear_free(pub_key
);
141 int ossl_prov_dh_priv_to_der(const void *dh
, unsigned char **pder
)
143 const BIGNUM
*bn
= NULL
;
144 ASN1_INTEGER
*priv_key
= NULL
;
147 if ((bn
= DH_get0_priv_key(dh
)) == NULL
) {
148 ERR_raise(ERR_LIB_PROV
, PROV_R_NOT_A_PRIVATE_KEY
);
151 if ((priv_key
= BN_to_ASN1_INTEGER(bn
, NULL
)) == NULL
) {
152 ERR_raise(ERR_LIB_PROV
, PROV_R_BN_ERROR
);
156 ret
= i2d_ASN1_INTEGER(priv_key
, pder
);
158 ASN1_STRING_clear_free(priv_key
);
163 int ossl_prov_dh_type_to_evp(const DH
*dh
)
165 return DH_test_flags(dh
, DH_FLAG_TYPE_DHX
) ? EVP_PKEY_DHX
: EVP_PKEY_DH
;