2 * Copyright 1999-2021 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
11 #include "internal/cryptlib.h"
12 #include <openssl/pkcs12.h>
13 #include <openssl/trace.h>
16 * Encrypt/Decrypt a buffer based on password and algor, result in a
17 * OPENSSL_malloc'ed buffer
19 unsigned char *PKCS12_pbe_crypt_ex(const X509_ALGOR
*algor
,
20 const char *pass
, int passlen
,
21 const unsigned char *in
, int inlen
,
22 unsigned char **data
, int *datalen
, int en_de
,
23 OSSL_LIB_CTX
*libctx
, const char *propq
)
25 unsigned char *out
= NULL
;
27 EVP_CIPHER_CTX
*ctx
= EVP_CIPHER_CTX_new();
28 int max_out_len
, mac_len
= 0;
31 ERR_raise(ERR_LIB_PKCS12
, ERR_R_MALLOC_FAILURE
);
36 if (!EVP_PBE_CipherInit_ex(algor
->algorithm
, pass
, passlen
,
37 algor
->parameter
, ctx
, en_de
, libctx
, propq
))
41 * GOST algorithm specifics:
42 * OMAC algorithm calculate and encrypt MAC of the encrypted objects
43 * It's appended to encrypted text on encrypting
44 * MAC should be processed on decrypting separately from plain text
46 max_out_len
= inlen
+ EVP_CIPHER_CTX_get_block_size(ctx
);
47 if ((EVP_CIPHER_get_flags(EVP_CIPHER_CTX_get0_cipher(ctx
))
48 & EVP_CIPH_FLAG_CIPHER_WITH_MAC
) != 0) {
49 if (EVP_CIPHER_CTX_ctrl(ctx
, EVP_CTRL_AEAD_TLS1_AAD
, 0, &mac_len
) < 0) {
50 ERR_raise(ERR_LIB_PKCS12
, ERR_R_INTERNAL_ERROR
);
54 if (EVP_CIPHER_CTX_is_encrypting(ctx
)) {
55 max_out_len
+= mac_len
;
57 if (inlen
< mac_len
) {
58 ERR_raise(ERR_LIB_PKCS12
, PKCS12_R_UNSUPPORTED_PKCS12_MODE
);
62 if (EVP_CIPHER_CTX_ctrl(ctx
, EVP_CTRL_AEAD_SET_TAG
,
63 (int)mac_len
, (unsigned char *)in
+inlen
) < 0) {
64 ERR_raise(ERR_LIB_PKCS12
, ERR_R_INTERNAL_ERROR
);
70 if ((out
= OPENSSL_malloc(max_out_len
)) == NULL
) {
71 ERR_raise(ERR_LIB_PKCS12
, ERR_R_MALLOC_FAILURE
);
75 if (!EVP_CipherUpdate(ctx
, out
, &i
, in
, inlen
)) {
78 ERR_raise(ERR_LIB_PKCS12
, ERR_R_EVP_LIB
);
83 if (!EVP_CipherFinal_ex(ctx
, out
+ i
, &i
)) {
86 ERR_raise_data(ERR_LIB_PKCS12
, PKCS12_R_PKCS12_CIPHERFINAL_ERROR
,
87 passlen
== 0 ? "empty password"
88 : "maybe wrong password");
92 if ((EVP_CIPHER_get_flags(EVP_CIPHER_CTX_get0_cipher(ctx
))
93 & EVP_CIPH_FLAG_CIPHER_WITH_MAC
) != 0) {
94 if (EVP_CIPHER_CTX_is_encrypting(ctx
)) {
95 if (EVP_CIPHER_CTX_ctrl(ctx
, EVP_CTRL_AEAD_GET_TAG
,
96 (int)mac_len
, out
+outlen
) < 0) {
99 ERR_raise(ERR_LIB_PKCS12
, ERR_R_INTERNAL_ERROR
);
110 EVP_CIPHER_CTX_free(ctx
);
115 unsigned char *PKCS12_pbe_crypt(const X509_ALGOR
*algor
,
116 const char *pass
, int passlen
,
117 const unsigned char *in
, int inlen
,
118 unsigned char **data
, int *datalen
, int en_de
)
120 return PKCS12_pbe_crypt_ex(algor
, pass
, passlen
, in
, inlen
, data
, datalen
,
125 * Decrypt an OCTET STRING and decode ASN1 structure if zbuf set zero buffer
129 void *PKCS12_item_decrypt_d2i_ex(const X509_ALGOR
*algor
, const ASN1_ITEM
*it
,
130 const char *pass
, int passlen
,
131 const ASN1_OCTET_STRING
*oct
, int zbuf
,
132 OSSL_LIB_CTX
*libctx
,
135 unsigned char *out
= NULL
;
136 const unsigned char *p
;
140 if (!PKCS12_pbe_crypt_ex(algor
, pass
, passlen
, oct
->data
, oct
->length
,
141 &out
, &outlen
, 0, libctx
, propq
))
144 OSSL_TRACE_BEGIN(PKCS12_DECRYPT
) {
145 BIO_printf(trc_out
, "\n");
146 BIO_dump(trc_out
, out
, outlen
);
147 BIO_printf(trc_out
, "\n");
148 } OSSL_TRACE_END(PKCS12_DECRYPT
);
149 ret
= ASN1_item_d2i(NULL
, &p
, outlen
, it
);
151 OPENSSL_cleanse(out
, outlen
);
153 ERR_raise(ERR_LIB_PKCS12
, PKCS12_R_DECODE_ERROR
);
158 void *PKCS12_item_decrypt_d2i(const X509_ALGOR
*algor
, const ASN1_ITEM
*it
,
159 const char *pass
, int passlen
,
160 const ASN1_OCTET_STRING
*oct
, int zbuf
)
162 return PKCS12_item_decrypt_d2i_ex(algor
, it
, pass
, passlen
, oct
, zbuf
,
167 * Encode ASN1 structure and encrypt, return OCTET STRING if zbuf set zero
171 ASN1_OCTET_STRING
*PKCS12_item_i2d_encrypt_ex(X509_ALGOR
*algor
,
173 const char *pass
, int passlen
,
178 ASN1_OCTET_STRING
*oct
= NULL
;
179 unsigned char *in
= NULL
;
182 if ((oct
= ASN1_OCTET_STRING_new()) == NULL
) {
183 ERR_raise(ERR_LIB_PKCS12
, ERR_R_MALLOC_FAILURE
);
186 inlen
= ASN1_item_i2d(obj
, &in
, it
);
188 ERR_raise(ERR_LIB_PKCS12
, PKCS12_R_ENCODE_ERROR
);
191 if (!PKCS12_pbe_crypt_ex(algor
, pass
, passlen
, in
, inlen
, &oct
->data
,
192 &oct
->length
, 1, ctx
, propq
)) {
193 ERR_raise(ERR_LIB_PKCS12
, PKCS12_R_ENCRYPT_ERROR
);
198 OPENSSL_cleanse(in
, inlen
);
202 ASN1_OCTET_STRING_free(oct
);
206 ASN1_OCTET_STRING
*PKCS12_item_i2d_encrypt(X509_ALGOR
*algor
,
208 const char *pass
, int passlen
,
211 return PKCS12_item_i2d_encrypt_ex(algor
, it
, pass
, passlen
, obj
, zbuf
, NULL
, NULL
);