2 * Copyright 2020-2021 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
10 #include <openssl/core.h>
11 #include <openssl/core_dispatch.h>
12 #include <openssl/core_names.h>
13 #include <openssl/core_object.h>
14 #include <openssl/asn1.h>
15 #include <openssl/err.h>
16 #include <openssl/objects.h>
17 #include <openssl/pkcs12.h>
18 #include <openssl/x509.h>
19 #include <openssl/proverr.h>
20 #include "internal/asn1.h"
21 #include "internal/sizes.h"
23 #include "prov/implementations.h"
24 #include "endecoder_local.h"
26 static OSSL_FUNC_decoder_newctx_fn epki2pki_newctx;
27 static OSSL_FUNC_decoder_freectx_fn epki2pki_freectx;
28 static OSSL_FUNC_decoder_decode_fn epki2pki_decode;
31 * Context used for EncryptedPrivateKeyInfo to PrivateKeyInfo decoding.
33 struct epki2pki_ctx_st {
37 static void *epki2pki_newctx(void *provctx)
39 struct epki2pki_ctx_st *ctx = OPENSSL_zalloc(sizeof(*ctx));
42 ctx->provctx = provctx;
46 static void epki2pki_freectx(void *vctx)
48 struct epki2pki_ctx_st *ctx = vctx;
54 * The selection parameter in epki2pki_decode() is not used by this function
55 * because it's not relevant just to decode EncryptedPrivateKeyInfo to
58 static int epki2pki_decode(void *vctx, OSSL_CORE_BIO *cin, int selection,
59 OSSL_CALLBACK *data_cb, void *data_cbarg,
60 OSSL_PASSPHRASE_CALLBACK *pw_cb, void *pw_cbarg)
62 struct epki2pki_ctx_st *ctx = vctx;
64 unsigned char *der = NULL;
65 const unsigned char *pder = NULL;
68 PKCS8_PRIV_KEY_INFO *p8inf = NULL;
69 const X509_ALGOR *alg = NULL;
70 BIO *in = ossl_bio_new_from_core_bio(ctx->provctx, cin);
76 ok = (asn1_d2i_read_bio(in, &mem) >= 0);
79 /* We return "empty handed". This is not an error. */
83 pder = der = (unsigned char *)mem->data;
84 der_len = (long)mem->length;
87 ok = 1; /* Assume good */
89 if ((p8 = d2i_X509_SIG(NULL, &pder, der_len)) != NULL) {
93 ERR_clear_last_mark();
95 if (!pw_cb(pbuf, sizeof(pbuf), &plen, NULL, pw_cbarg)) {
96 ERR_raise(ERR_LIB_PROV, PROV_R_UNABLE_TO_GET_PASSPHRASE);
99 const ASN1_OCTET_STRING *oct;
100 unsigned char *new_der = NULL;
103 X509_SIG_get0(p8, &alg, &oct);
104 if (!PKCS12_pbe_crypt_ex(alg, pbuf, plen,
105 oct->data, oct->length,
106 &new_der, &new_der_len, 0,
107 PROV_LIBCTX_OF(ctx->provctx), NULL)) {
112 der_len = new_der_len;
123 p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &pder, der_len);
126 if (p8inf != NULL && PKCS8_pkey_get0(NULL, NULL, NULL, &alg, p8inf)) {
128 * We have something and recognised it as PrivateKeyInfo, so let's
129 * pass all the applicable data to the callback.
131 char keytype[OSSL_MAX_NAME_SIZE];
132 OSSL_PARAM params[5], *p = params;
133 int objtype = OSSL_OBJECT_PKEY;
135 OBJ_obj2txt(keytype, sizeof(keytype), alg->algorithm, 0);
137 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_OBJECT_PARAM_DATA_TYPE,
139 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_OBJECT_PARAM_DATA_STRUCTURE,
140 "PrivateKeyInfo", 0);
141 *p++ = OSSL_PARAM_construct_octet_string(OSSL_OBJECT_PARAM_DATA,
143 *p++ = OSSL_PARAM_construct_int(OSSL_OBJECT_PARAM_TYPE, &objtype);
144 *p = OSSL_PARAM_construct_end();
146 ok = data_cb(params, data_cbarg);
148 PKCS8_PRIV_KEY_INFO_free(p8inf);
153 const OSSL_DISPATCH ossl_EncryptedPrivateKeyInfo_der_to_der_decoder_functions[] = {
154 { OSSL_FUNC_DECODER_NEWCTX, (void (*)(void))epki2pki_newctx },
155 { OSSL_FUNC_DECODER_FREECTX, (void (*)(void))epki2pki_freectx },
156 { OSSL_FUNC_DECODER_DECODE, (void (*)(void))epki2pki_decode },