mbed TLS v2.9.0
ccm.h
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1 
18 /*
19  * Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
20  * SPDX-License-Identifier: Apache-2.0
21  *
22  * Licensed under the Apache License, Version 2.0 (the "License"); you may
23  * not use this file except in compliance with the License.
24  * You may obtain a copy of the License at
25  *
26  * http://www.apache.org/licenses/LICENSE-2.0
27  *
28  * Unless required by applicable law or agreed to in writing, software
29  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
30  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
31  * See the License for the specific language governing permissions and
32  * limitations under the License.
33  *
34  * This file is part of Mbed TLS (https://tls.mbed.org)
35  */
36 
37 #ifndef MBEDTLS_CCM_H
38 #define MBEDTLS_CCM_H
39 
40 #include "cipher.h"
41 
42 #define MBEDTLS_ERR_CCM_BAD_INPUT -0x000D
43 #define MBEDTLS_ERR_CCM_AUTH_FAILED -0x000F
44 #define MBEDTLS_ERR_CCM_HW_ACCEL_FAILED -0x0011
47 #ifdef __cplusplus
48 extern "C" {
49 #endif
50 
51 #if !defined(MBEDTLS_CCM_ALT)
52 // Regular implementation
53 //
54 
59 typedef struct {
61 }
63 
64 #else /* MBEDTLS_CCM_ALT */
65 #include "ccm_alt.h"
66 #endif /* MBEDTLS_CCM_ALT */
67 
76 
90  mbedtls_cipher_id_t cipher,
91  const unsigned char *key,
92  unsigned int keybits );
93 
101 
129 int mbedtls_ccm_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length,
130  const unsigned char *iv, size_t iv_len,
131  const unsigned char *add, size_t add_len,
132  const unsigned char *input, unsigned char *output,
133  unsigned char *tag, size_t tag_len );
134 
157 int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
158  const unsigned char *iv, size_t iv_len,
159  const unsigned char *add, size_t add_len,
160  const unsigned char *input, unsigned char *output,
161  const unsigned char *tag, size_t tag_len );
162 
163 
164 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
165 
171 int mbedtls_ccm_self_test( int verbose );
172 #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
173 
174 #ifdef __cplusplus
175 }
176 #endif
177 
178 #endif /* MBEDTLS_CCM_H */
void mbedtls_ccm_free(mbedtls_ccm_context *ctx)
This function releases and clears the specified CCM context and underlying cipher sub-context...
The CCM context-type definition. The CCM context is passed to the APIs called.
Definition: ccm.h:59
mbedtls_cipher_id_t
Supported cipher types.
Definition: cipher.h:80
int mbedtls_ccm_encrypt_and_tag(mbedtls_ccm_context *ctx, size_t length, const unsigned char *iv, size_t iv_len, const unsigned char *add, size_t add_len, const unsigned char *input, unsigned char *output, unsigned char *tag, size_t tag_len)
This function encrypts a buffer using CCM.
This file contains an abstraction interface for use with the cipher primitives provided by the librar...
int mbedtls_ccm_setkey(mbedtls_ccm_context *ctx, mbedtls_cipher_id_t cipher, const unsigned char *key, unsigned int keybits)
This function initializes the CCM context set in the ctx parameter and sets the encryption key...
int mbedtls_ccm_auth_decrypt(mbedtls_ccm_context *ctx, size_t length, const unsigned char *iv, size_t iv_len, const unsigned char *add, size_t add_len, const unsigned char *input, unsigned char *output, const unsigned char *tag, size_t tag_len)
This function performs a CCM authenticated decryption of a buffer.
int mbedtls_ccm_self_test(int verbose)
The CCM checkup routine.
mbedtls_cipher_context_t cipher_ctx
Definition: ccm.h:60
void mbedtls_ccm_init(mbedtls_ccm_context *ctx)
This function initializes the specified CCM context, to make references valid, and prepare the contex...