2 * Copyright 1999-2020 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 #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(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)
24 unsigned char *out = NULL;
26 EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
27 int max_out_len, mac_len = 0;
30 ERR_raise(ERR_LIB_PKCS12, ERR_R_MALLOC_FAILURE);
35 if (!EVP_PBE_CipherInit(algor->algorithm, pass, passlen,
36 algor->parameter, ctx, en_de))
40 * GOST algorithm specifics:
41 * OMAC algorithm calculate and encrypt MAC of the encrypted objects
42 * It's appended to encrypted text on encrypting
43 * MAC should be processed on decrypting separately from plain text
45 max_out_len = inlen + EVP_CIPHER_CTX_block_size(ctx);
46 if (EVP_CIPHER_flags(EVP_CIPHER_CTX_cipher(ctx)) & EVP_CIPH_FLAG_CIPHER_WITH_MAC) {
47 if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_TLS1_AAD, 0, &mac_len) < 0) {
48 ERR_raise(ERR_LIB_PKCS12, ERR_R_INTERNAL_ERROR);
52 if (EVP_CIPHER_CTX_encrypting(ctx)) {
53 max_out_len += mac_len;
55 if (inlen < mac_len) {
56 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_UNSUPPORTED_PKCS12_MODE);
60 if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG,
61 (int)mac_len, (unsigned char *)in+inlen) < 0) {
62 ERR_raise(ERR_LIB_PKCS12, ERR_R_INTERNAL_ERROR);
68 if ((out = OPENSSL_malloc(max_out_len)) == NULL) {
69 ERR_raise(ERR_LIB_PKCS12, ERR_R_MALLOC_FAILURE);
73 if (!EVP_CipherUpdate(ctx, out, &i, in, inlen)) {
76 ERR_raise(ERR_LIB_PKCS12, ERR_R_EVP_LIB);
81 if (!EVP_CipherFinal_ex(ctx, out + i, &i)) {
84 ERR_raise_data(ERR_LIB_PKCS12, PKCS12_R_PKCS12_CIPHERFINAL_ERROR,
85 passlen == 0 ? "empty password"
86 : "maybe wrong password");
90 if (EVP_CIPHER_flags(EVP_CIPHER_CTX_cipher(ctx)) & EVP_CIPH_FLAG_CIPHER_WITH_MAC) {
91 if (EVP_CIPHER_CTX_encrypting(ctx)) {
92 if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG,
93 (int)mac_len, out+outlen) < 0) {
94 ERR_raise(ERR_LIB_PKCS12, ERR_R_INTERNAL_ERROR);
105 EVP_CIPHER_CTX_free(ctx);
111 * Decrypt an OCTET STRING and decode ASN1 structure if zbuf set zero buffer
115 void *PKCS12_item_decrypt_d2i(const X509_ALGOR *algor, const ASN1_ITEM *it,
116 const char *pass, int passlen,
117 const ASN1_OCTET_STRING *oct, int zbuf)
119 unsigned char *out = NULL;
120 const unsigned char *p;
124 if (!PKCS12_pbe_crypt(algor, pass, passlen, oct->data, oct->length,
128 OSSL_TRACE_BEGIN(PKCS12_DECRYPT) {
129 BIO_printf(trc_out, "\n");
130 BIO_dump(trc_out, out, outlen);
131 BIO_printf(trc_out, "\n");
132 } OSSL_TRACE_END(PKCS12_DECRYPT);
133 ret = ASN1_item_d2i(NULL, &p, outlen, it);
135 OPENSSL_cleanse(out, outlen);
137 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR);
143 * Encode ASN1 structure and encrypt, return OCTET STRING if zbuf set zero
147 ASN1_OCTET_STRING *PKCS12_item_i2d_encrypt(X509_ALGOR *algor,
149 const char *pass, int passlen,
152 ASN1_OCTET_STRING *oct = NULL;
153 unsigned char *in = NULL;
156 if ((oct = ASN1_OCTET_STRING_new()) == NULL) {
157 ERR_raise(ERR_LIB_PKCS12, ERR_R_MALLOC_FAILURE);
160 inlen = ASN1_item_i2d(obj, &in, it);
162 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_ENCODE_ERROR);
165 if (!PKCS12_pbe_crypt(algor, pass, passlen, in, inlen, &oct->data,
167 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_ENCRYPT_ERROR);
172 OPENSSL_cleanse(in, inlen);
176 ASN1_OCTET_STRING_free(oct);