2 * Copyright 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 * low level APIs are deprecated for public use, but still ok for
14 #include "internal/deprecated.h"
18 #include <openssl/core_dispatch.h>
19 #include <openssl/core_names.h>
20 #include <openssl/core_object.h>
21 #include <openssl/crypto.h>
22 #include <openssl/params.h>
23 #include <openssl/pem.h> /* For public PVK functions */
24 #include <openssl/x509.h>
25 #include "internal/passphrase.h"
26 #include "crypto/pem.h" /* For internal PVK and "blob" headers */
28 #include "prov/implementations.h"
29 #include "endecoder_local.h"
31 static EVP_PKEY *read_msblob(PROV_CTX *provctx, OSSL_CORE_BIO *cin, int *ispub)
33 BIO *in = bio_new_from_core_bio(provctx, cin);
34 EVP_PKEY *pkey = ossl_b2i_bio(in, ispub);
40 static EVP_PKEY *read_pvk(PROV_CTX *provctx, OSSL_CORE_BIO *cin,
41 OSSL_PASSPHRASE_CALLBACK *pw_cb, void *pw_cbarg)
44 EVP_PKEY *pkey = NULL;
45 struct ossl_passphrase_data_st pwdata;
47 memset(&pwdata, 0, sizeof(pwdata));
48 if (!ossl_pw_set_ossl_passphrase_cb(&pwdata, pw_cb, pw_cbarg))
51 in = bio_new_from_core_bio(provctx, cin);
52 pkey = b2i_PVK_bio(in, ossl_pw_pem_password, &pwdata);
58 static OSSL_FUNC_decoder_freectx_fn ms2key_freectx;
59 static OSSL_FUNC_decoder_gettable_params_fn ms2key_gettable_params;
60 static OSSL_FUNC_decoder_get_params_fn msblob2key_get_params;
61 static OSSL_FUNC_decoder_get_params_fn pvk2key_get_params;
62 static OSSL_FUNC_decoder_decode_fn msblob2key_decode;
63 static OSSL_FUNC_decoder_decode_fn pvk2key_decode;
64 static OSSL_FUNC_decoder_export_object_fn ms2key_export_object;
66 typedef void *(extract_key_fn)(EVP_PKEY *);
67 typedef void (free_key_fn)(void *);
68 struct keytype_desc_st {
69 int type; /* EVP key type */
70 const char *name; /* Keytype */
71 const OSSL_DISPATCH *fns; /* Keymgmt (to pilfer functions from) */
74 * These must be the correct EVP_PKEY_get1_{TYPE}() and {TYPE}_free()
75 * function for the key.
77 extract_key_fn *extract_key;
78 free_key_fn *free_key;
82 * Context used for DER to key decoding.
84 struct ms2key_ctx_st {
86 const struct keytype_desc_st *desc;
89 static struct ms2key_ctx_st *
90 ms2key_newctx(void *provctx, const struct keytype_desc_st *desc)
92 struct ms2key_ctx_st *ctx = OPENSSL_zalloc(sizeof(*ctx));
95 ctx->provctx = provctx;
101 static void ms2key_freectx(void *vctx)
103 struct ms2key_ctx_st *ctx = vctx;
108 static const OSSL_PARAM *ms2key_gettable_params(ossl_unused void *provctx)
110 static const OSSL_PARAM gettables[] = {
111 { OSSL_DECODER_PARAM_INPUT_TYPE, OSSL_PARAM_UTF8_PTR, NULL, 0, 0 },
118 static int msblob2key_get_params(OSSL_PARAM params[])
122 p = OSSL_PARAM_locate(params, OSSL_DECODER_PARAM_INPUT_TYPE);
123 if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, "MSBLOB"))
129 static int pvk2key_get_params(OSSL_PARAM params[])
133 p = OSSL_PARAM_locate(params, OSSL_DECODER_PARAM_INPUT_TYPE);
134 if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, "PVK"))
140 static int ms2key_post(struct ms2key_ctx_st *ctx, EVP_PKEY *pkey,
141 OSSL_CALLBACK *data_cb, void *data_cbarg)
148 * Tear out the low-level key pointer from the pkey,
149 * but only if it matches the expected key type.
151 * TODO(3.0): The check should be done with EVP_PKEY_is_a(), but
152 * as long as we still have #legacy internal keys, it's safer to
153 * use the type numbers in side the provider.
155 if (EVP_PKEY_id(pkey) == ctx->desc->type)
156 key = ctx->desc->extract_key(pkey);
160 OSSL_PARAM params[4];
161 int object_type = OSSL_OBJECT_PKEY;
164 OSSL_PARAM_construct_int(OSSL_OBJECT_PARAM_TYPE, &object_type);
166 OSSL_PARAM_construct_utf8_string(OSSL_OBJECT_PARAM_DATA_TYPE,
167 (char *)ctx->desc->name, 0);
168 /* The address of the key becomes the octet string */
170 OSSL_PARAM_construct_octet_string(OSSL_OBJECT_PARAM_REFERENCE,
172 params[3] = OSSL_PARAM_construct_end();
174 ok = data_cb(params, data_cbarg);
176 ctx->desc->free_key(key);
181 static int msblob2key_decode(void *vctx, OSSL_CORE_BIO *cin, int selection,
182 OSSL_CALLBACK *data_cb, void *data_cbarg,
183 OSSL_PASSPHRASE_CALLBACK *pw_cb, void *pw_cbarg)
185 struct ms2key_ctx_st *ctx = vctx;
187 EVP_PKEY *pkey = read_msblob(ctx->provctx, cin, &ispub);
192 ? (selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0
193 : (selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0))
194 ok = ms2key_post(ctx, pkey, data_cb, data_cbarg);
200 static int pvk2key_decode(void *vctx, OSSL_CORE_BIO *cin, int selection,
201 OSSL_CALLBACK *data_cb, void *data_cbarg,
202 OSSL_PASSPHRASE_CALLBACK *pw_cb, void *pw_cbarg)
204 struct ms2key_ctx_st *ctx = vctx;
205 EVP_PKEY *pkey = read_pvk(ctx->provctx, cin, pw_cb, pw_cbarg);
209 || (selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
210 ok = ms2key_post(ctx, pkey, data_cb, data_cbarg);
216 static int ms2key_export_object(void *vctx,
217 const void *reference, size_t reference_sz,
218 OSSL_CALLBACK *export_cb, void *export_cbarg)
220 struct ms2key_ctx_st *ctx = vctx;
221 OSSL_FUNC_keymgmt_export_fn *export =
222 ossl_prov_get_keymgmt_export(ctx->desc->fns);
225 if (reference_sz == sizeof(keydata) && export != NULL) {
226 /* The contents of the reference is the address to our object */
227 keydata = *(void **)reference;
229 return export(keydata, OSSL_KEYMGMT_SELECT_ALL,
230 export_cb, export_cbarg);
235 #define IMPLEMENT_TYPE(KEYTYPEstr, KEYTYPE, keytype, extract, free) \
236 static const struct keytype_desc_st keytype##_desc; \
237 static OSSL_FUNC_decoder_newctx_fn ms2##keytype##_newctx; \
238 static void *ms2##keytype##_newctx(void *provctx) \
240 return ms2key_newctx(provctx, &keytype##_desc); \
242 static const struct keytype_desc_st keytype##_desc = \
243 { EVP_PKEY_##KEYTYPE, KEYTYPEstr, \
244 ossl_##keytype##_keymgmt_functions, \
245 (extract_key_fn *)extract, \
246 (free_key_fn *)free }
248 #define IMPLEMENT_MS(mstype, keytype) \
249 const OSSL_DISPATCH \
250 ossl_##mstype##_to_##keytype##_decoder_functions[] = { \
251 { OSSL_FUNC_DECODER_NEWCTX, \
252 (void (*)(void))ms2##keytype##_newctx }, \
253 { OSSL_FUNC_DECODER_FREECTX, \
254 (void (*)(void))ms2key_freectx }, \
255 { OSSL_FUNC_DECODER_GETTABLE_PARAMS, \
256 (void (*)(void))ms2key_gettable_params }, \
257 { OSSL_FUNC_DECODER_GET_PARAMS, \
258 (void (*)(void))mstype##2key_get_params }, \
259 { OSSL_FUNC_DECODER_DECODE, \
260 (void (*)(void))mstype##2key_decode }, \
261 { OSSL_FUNC_DECODER_EXPORT_OBJECT, \
262 (void (*)(void))ms2key_export_object }, \
266 #ifndef OPENSSL_NO_DSA
267 IMPLEMENT_TYPE("DSA", DSA, dsa, EVP_PKEY_get1_DSA, DSA_free);
268 IMPLEMENT_MS(msblob, dsa);
269 IMPLEMENT_MS(pvk, dsa);
271 IMPLEMENT_TYPE("RSA", RSA, rsa, EVP_PKEY_get1_RSA, RSA_free);
272 IMPLEMENT_MS(msblob, rsa);
273 IMPLEMENT_MS(pvk, rsa);