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unix-like reverse engineering framework and cli tools
zip_crypto_gnutls.c
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1 /*
2  zip_crypto_gnutls.c -- GnuTLS wrapper.
3  Copyright (C) 2018-2021 Dieter Baron and Thomas Klausner
4 
5  This file is part of libzip, a library to manipulate ZIP archives.
6  The authors can be contacted at <info@libzip.org>
7 
8  Redistribution and use in source and binary forms, with or without
9  modification, are permitted provided that the following conditions
10  are met:
11  1. Redistributions of source code must retain the above copyright
12  notice, this list of conditions and the following disclaimer.
13  2. Redistributions in binary form must reproduce the above copyright
14  notice, this list of conditions and the following disclaimer in
15  the documentation and/or other materials provided with the
16  distribution.
17  3. The names of the authors may not be used to endorse or promote
18  products derived from this software without specific prior
19  written permission.
20 
21  THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
22  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
25  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
27  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
29  IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
31  IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33 
34 #include <stdlib.h>
35 
36 #include "zipint.h"
37 
38 #include "zip_crypto.h"
39 
42  _zip_crypto_aes_t *aes;
43 
44  if ((aes = (_zip_crypto_aes_t *)malloc(sizeof(*aes))) == NULL) {
46  return NULL;
47  }
48 
49  aes->key_size = key_size;
50 
51  switch (aes->key_size) {
52  case 128:
54  break;
55  case 192:
57  break;
58  case 256:
60  break;
61  default:
63  free(aes);
64  return NULL;
65  }
66 
67  return aes;
68 }
69 
70 bool
72  switch (aes->key_size) {
73  case 128:
75  break;
76  case 192:
78  break;
79  case 256:
81  break;
82  }
83 
84  return true;
85 }
86 
87 void
89  if (aes == NULL) {
90  return;
91  }
92 
93  _zip_crypto_clear(aes, sizeof(*aes));
94  free(aes);
95 }
96 
97 
100  _zip_crypto_hmac_t *hmac;
101 
102  if ((hmac = (_zip_crypto_hmac_t *)malloc(sizeof(*hmac))) == NULL) {
104  return NULL;
105  }
106 
107  if (gnutls_hmac_init(hmac, GNUTLS_MAC_SHA1, secret, secret_length) < 0) {
109  free(hmac);
110  return NULL;
111  }
112 
113  return hmac;
114 }
115 
116 
117 void
120 
121  if (hmac == NULL) {
122  return;
123  }
124 
125  gnutls_hmac_deinit(*hmac, buf);
126  _zip_crypto_clear(hmac, sizeof(*hmac));
127  free(hmac);
128 }
129 
130 
131 ZIP_EXTERN bool
133  return gnutls_rnd(GNUTLS_RND_KEY, buffer, length) == 0;
134 }
void nettle_aes128_encrypt(const struct aes128_ctx *ctx, size_t length, uint8_t *dst, const uint8_t *src)
void nettle_aes128_set_encrypt_key(struct aes128_ctx *ctx, const uint8_t *key)
void nettle_aes192_encrypt(const struct aes192_ctx *ctx, size_t length, uint8_t *dst, const uint8_t *src)
void nettle_aes192_set_encrypt_key(struct aes192_ctx *ctx, const uint8_t *key)
void nettle_aes256_encrypt(const struct aes256_ctx *ctx, size_t length, uint8_t *dst, const uint8_t *src)
void nettle_aes256_set_encrypt_key(struct aes256_ctx *ctx, const uint8_t *key)
const lzma_allocator const uint8_t * in
Definition: block.h:527
const lzma_allocator const uint8_t size_t uint8_t * out
Definition: block.h:528
#define NULL
Definition: cris-opc.c:27
static static sync static getppid static getegid const char static filename char static len const char char static bufsiz static mask static vfork const void static prot static getpgrp const char static swapflags static arg static fd static protocol static who struct sockaddr static addrlen static backlog struct timeval struct timezone static tz const struct iovec static count static mode const void const struct sockaddr static tolen const char static pathname void static offset struct stat static buf void long static basep static whence static length const void static len key
Definition: sflib.h:118
static static sync static getppid static getegid const char static filename char static len const char char static bufsiz static mask static vfork const void static prot static getpgrp const char static swapflags static arg static fd static protocol static who struct sockaddr static addrlen static backlog struct timeval struct timezone static tz const struct iovec static count static mode const void const struct sockaddr static tolen const char static pathname void static offset struct stat static buf void long static basep static whence static length const void static len static semflg const void static shmflg const struct timespec struct timespec static rem const char static group const void length
Definition: sflib.h:133
RZ_API void Ht_() free(HtName_(Ht) *ht)
Definition: ht_inc.c:130
voidpf void * buf
Definition: ioapi.h:138
#define ZIP_ER_INTERNAL
Definition: zip.h:125
ZIP_EXTERN void zip_error_set(zip_error_t *_Nullable, int, int)
Definition: zip_error.c:126
#define ZIP_ER_MEMORY
Definition: zip.h:119
#define ZIP_EXTERN
Definition: zip.h:54
#define ZIP_ER_INVAL
Definition: zip.h:123
void * malloc(size_t size)
Definition: malloc.c:123
union _zip_crypto_aes_t::@409 ctx
struct aes256_ctx ctx_256
struct aes128_ctx ctx_128
zip_uint16_t key_size
struct aes192_ctx ctx_192
Definition: buffer.h:15
Definition: zip.h:284
void error(const char *msg)
Definition: untgz.c:593
#define ZIP_CRYPTO_SHA1_LENGTH
Definition: zip_crypto.h:37
#define ZIP_CRYPTO_AES_BLOCK_LENGTH
Definition: zip_crypto.h:38
bool _zip_crypto_aes_encrypt_block(_zip_crypto_aes_t *aes, const zip_uint8_t *in, zip_uint8_t *out)
void _zip_crypto_hmac_free(_zip_crypto_hmac_t *hmac)
void _zip_crypto_aes_free(_zip_crypto_aes_t *aes)
_zip_crypto_aes_t * _zip_crypto_aes_new(const zip_uint8_t *key, zip_uint16_t key_size, zip_error_t *error)
ZIP_EXTERN bool zip_secure_random(zip_uint8_t *buffer, zip_uint16_t length)
_zip_crypto_hmac_t * _zip_crypto_hmac_new(const zip_uint8_t *secret, zip_uint64_t secret_length, zip_error_t *error)
uint64_t zip_uint64_t
Definition: zipconf.h:39
uint8_t zip_uint8_t
Definition: zipconf.h:33
uint16_t zip_uint16_t
Definition: zipconf.h:35
#define _zip_crypto_clear(b, l)
Definition: zipint.h:489