Driver for the cc2538 AES-CCM mode of the security core.
More...
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| file | ccm.c |
| | Implementation of the cc2538 AES-CCM driver.
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| file | ccm.h |
| | Header file for the cc2538 AES-CCM driver.
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#define | CCM_FLAGS_LEN 1 |
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#define | CCM_NONCE_LEN_LEN (AES_IV_LEN - CCM_FLAGS_LEN) |
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#define | CCM_MIC_MAX_LEN AES_TAG_LEN |
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| uint8_t | ccm_auth_encrypt_start (uint8_t len_len, uint8_t key_area, const void *nonce, const void *adata, uint16_t adata_len, const void *pdata, uint16_t pdata_len, void *cdata, uint8_t mic_len, struct process *process) |
| | Starts a CCM authentication and encryption operation. More...
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| uint8_t | ccm_auth_encrypt_get_result (void *mic, uint8_t mic_len) |
| | Gets the result of the CCM authentication and encryption operation. More...
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| uint8_t | ccm_auth_decrypt_start (uint8_t len_len, uint8_t key_area, const void *nonce, const void *adata, uint16_t adata_len, const void *cdata, uint16_t cdata_len, void *pdata, uint8_t mic_len, struct process *process) |
| | Starts a CCM authentication checking and decryption operation. More...
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| uint8_t | ccm_auth_decrypt_get_result (const void *cdata, uint16_t cdata_len, void *mic, uint8_t mic_len) |
| | Gets the result of the CCM authentication checking and decryption operation. More...
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| #define | ccm_auth_encrypt_check_status aes_auth_crypt_check_status |
| | Checks the status of the CCM authentication and encryption operation. More...
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| #define | ccm_auth_decrypt_check_status aes_auth_crypt_check_status |
| | Checks the status of the CCM authentication checking and decryption operation. More...
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Driver for the cc2538 AES-CCM mode of the security core.
Checks the status of the CCM authentication checking and decryption operation.
- Return values
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| false | Result not yet available, and no error occurred |
| true | Result available, or error occurred |
Definition at line 137 of file ccm.h.
Checks the status of the CCM authentication and encryption operation.
- Return values
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| false | Result not yet available, and no error occurred |
| true | Result available, or error occurred |
Definition at line 98 of file ccm.h.
| uint8_t ccm_auth_decrypt_get_result |
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const void * |
cdata, |
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uint16_t |
cdata_len, |
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void * |
mic, |
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uint8_t |
mic_len |
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Gets the result of the CCM authentication checking and decryption operation.
- Parameters
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| cdata | Pointer to encrypted and authenticated message |
| cdata_len | Length of encrypted and authenticated message in octets |
| mic | Pointer to authentication field, or NULL |
| mic_len | Number of octets in authentication field (even value between 0 and CCM_MIC_MAX_LEN) |
- Returns
CRYPTO_SUCCESS if successful, or CRYPTO/AES/CCM error code
- Note
- This function must be called only after
ccm_auth_decrypt_start().
| uint8_t ccm_auth_decrypt_start |
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uint8_t |
len_len, |
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uint8_t |
key_area, |
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const void * |
nonce, |
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const void * |
adata, |
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uint16_t |
adata_len, |
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const void * |
cdata, |
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uint16_t |
cdata_len, |
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void * |
pdata, |
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uint8_t |
mic_len, |
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struct process * |
process |
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Starts a CCM authentication checking and decryption operation.
- Parameters
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| len_len | Number of octets in length field (2, 4, or 8) |
| key_area | Area in Key RAM where the key is stored (0 to AES_KEY_AREAS - 1) |
| nonce | Pointer to nonce (CCM_NONCE_LEN_LEN - len_len octets) |
| adata | Pointer to additional authenticated data in SRAM, or NULL |
| adata_len | Length of additional authenticated data in octets, or 0 |
| cdata | Pointer to encrypted and authenticated message in SRAM |
| cdata_len | Length of encrypted and authenticated message in octets |
| pdata | Pointer to decrypted message in SRAM (may be cdata), or NULL |
| mic_len | Number of octets in authentication field (even value between 0 and CCM_MIC_MAX_LEN) |
| process | Process to be polled upon completion of the operation, or NULL |
- Returns
CRYPTO_SUCCESS if successful, or CRYPTO/AES/CCM error code
Definition at line 126 of file ccm.c.
| uint8_t ccm_auth_encrypt_get_result |
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void * |
mic, |
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uint8_t |
mic_len |
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Gets the result of the CCM authentication and encryption operation.
- Parameters
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| mic | Pointer to authentication field, or NULL |
| mic_len | Number of octets in authentication field (even value between 0 and CCM_MIC_MAX_LEN) |
- Returns
CRYPTO_SUCCESS if successful, or CRYPTO/AES/CCM error code
- Note
- This function must be called only after
ccm_auth_encrypt_start().
Definition at line 120 of file ccm.c.
References NULL.
| uint8_t ccm_auth_encrypt_start |
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uint8_t |
len_len, |
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uint8_t |
key_area, |
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const void * |
nonce, |
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const void * |
adata, |
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uint16_t |
adata_len, |
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const void * |
pdata, |
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uint16_t |
pdata_len, |
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void * |
cdata, |
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uint8_t |
mic_len, |
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struct process * |
process |
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) |
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Starts a CCM authentication and encryption operation.
- Parameters
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| len_len | Number of octets in length field (2, 4, or 8) |
| key_area | Area in Key RAM where the key is stored (0 to AES_KEY_AREAS - 1) |
| nonce | Pointer to nonce (CCM_NONCE_LEN_LEN - len_len octets) |
| adata | Pointer to additional authenticated data in SRAM, or NULL |
| adata_len | Length of additional authenticated data in octets, or 0 |
| pdata | Pointer to message to authenticate and encrypt in SRAM, or NULL |
| pdata_len | Length of message to authenticate and encrypt in octets, or 0 |
| cdata | Pointer to encrypted message in SRAM (may be pdata), or NULL |
| mic_len | Number of octets in authentication field (even value between 0 and CCM_MIC_MAX_LEN) |
| process | Process to be polled upon completion of the operation, or NULL |
- Returns
CRYPTO_SUCCESS if successful, or CRYPTO/AES/CCM error code
Definition at line 110 of file ccm.c.
