55 #define MBEDTLS_CCM_DECRYPT 0
56 #define MBEDTLS_CCM_ENCRYPT 1
57 #define MBEDTLS_CCM_STAR_DECRYPT 2
58 #define MBEDTLS_CCM_STAR_ENCRYPT 3
61 #define MBEDTLS_ERR_CCM_BAD_INPUT -0x000D
63 #define MBEDTLS_ERR_CCM_AUTH_FAILED -0x000F
69 #if !defined(MBEDTLS_CCM_ALT)
130 const unsigned char *key,
131 unsigned int keybits);
179 const unsigned char *iv,
size_t iv_len,
180 const unsigned char *ad,
size_t ad_len,
181 const unsigned char *input,
unsigned char *output,
182 unsigned char *tag,
size_t tag_len);
228 const unsigned char *iv,
size_t iv_len,
229 const unsigned char *ad,
size_t ad_len,
230 const unsigned char *input,
unsigned char *output,
231 unsigned char *tag,
size_t tag_len);
265 const unsigned char *iv,
size_t iv_len,
266 const unsigned char *ad,
size_t ad_len,
267 const unsigned char *input,
unsigned char *output,
268 const unsigned char *tag,
size_t tag_len);
311 const unsigned char *iv,
size_t iv_len,
312 const unsigned char *ad,
size_t ad_len,
313 const unsigned char *input,
unsigned char *output,
314 const unsigned char *tag,
size_t tag_len);
346 const unsigned char *iv,
378 size_t plaintext_len,
412 const unsigned char *ad,
479 const unsigned char *input,
size_t input_len,
480 unsigned char *output,
size_t output_size,
515 unsigned char *tag,
size_t tag_len);
517 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
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.
int mbedtls_ccm_update(mbedtls_ccm_context *ctx, const unsigned char *input, size_t input_len, unsigned char *output, size_t output_size, size_t *output_len)
This function feeds an input buffer into an ongoing CCM encryption or decryption operation.
#define MBEDTLS_PRIVATE(member)
int mbedtls_ccm_encrypt_and_tag(mbedtls_ccm_context *ctx, size_t length, const unsigned char *iv, size_t iv_len, const unsigned char *ad, size_t ad_len, const unsigned char *input, unsigned char *output, unsigned char *tag, size_t tag_len)
This function encrypts a buffer using CCM.
int mbedtls_ccm_finish(mbedtls_ccm_context *ctx, unsigned char *tag, size_t tag_len)
This function finishes the CCM operation and generates the authentication tag.
struct mbedtls_ccm_context mbedtls_ccm_context
The CCM context-type definition. The CCM context is passed to the APIs called.
int mbedtls_ccm_star_encrypt_and_tag(mbedtls_ccm_context *ctx, size_t length, const unsigned char *iv, size_t iv_len, const unsigned char *ad, size_t ad_len, const unsigned char *input, unsigned char *output, unsigned char *tag, size_t tag_len)
This function encrypts a buffer using CCM*.
int mbedtls_ccm_update_ad(mbedtls_ccm_context *ctx, const unsigned char *ad, size_t ad_len)
This function feeds an input buffer as associated data (authenticated but not encrypted data) in a CC...
int mbedtls_ccm_auth_decrypt(mbedtls_ccm_context *ctx, size_t length, const unsigned char *iv, size_t iv_len, const unsigned char *ad, size_t ad_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.
mbedtls_cipher_id_t
Supported cipher types.
int mbedtls_ccm_set_lengths(mbedtls_ccm_context *ctx, size_t total_ad_len, size_t plaintext_len, size_t tag_len)
This function declares the lengths of the message and additional data for a CCM encryption or decrypt...
int mbedtls_ccm_starts(mbedtls_ccm_context *ctx, int mode, const unsigned char *iv, size_t iv_len)
This function starts a CCM encryption or decryption operation.
Macro wrapper for struct's members.
This file contains an abstraction interface for use with the cipher primitives provided by the librar...
Build-time configuration info.
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_star_auth_decrypt(mbedtls_ccm_context *ctx, size_t length, const unsigned char *iv, size_t iv_len, const unsigned char *ad, size_t ad_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.
void mbedtls_ccm_init(mbedtls_ccm_context *ctx)
This function initializes the specified CCM context, to make references valid, and prepare the contex...