cuberite/polarssl
1
0
Fork 0
mirror of https://github.com/cuberite/polarssl.git synced 2025-11-03 20:22:59 -05:00
Code Issues Packages Projects Releases Wiki Activity

Split operation start and the declaration of data lengths

Browse Source 
Split operation start and the declaration of data lengths
to better align with the PSA Cryptography multipart AEAD
APIs.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
This commit is contained in:
Ronald Cron 2021-05-29 17:22:10 +02:00
parent b740a617ec
commit 7c41cd2a7a
1 changed files with 40 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
include/mbedtls/ccm.h
View File

@ -308,6 +308,26 @@ int mbedtls_ccm_star_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
* \param iv_len The length of the nonce in Bytes: 7, 8, 9, 10, 11, 12,
* or 13. The length L of the message length field is
* 15 - \p iv_len.
*
* \return \c 0 on success.
* \return \#MBEDTLS_ERR_CCM_BAD_INPUT on failure:
* \p mode is invalid,
* \p iv_len is invalid (lower than \c 7 or greater than
* \c 13).
*/
int mbedtls_ccm_starts( mbedtls_ccm_context *ctx,
int mode,
const unsigned char *iv,
size_t iv_len );
/**
* \brief This function declares the lengths of the message
* and additional data for a CCM encryption or decryption
* operation.
*
* \note This function is not implemented in Mbed TLS yet.
*
* \param ctx The CCM context. This must be initialized.
* \param total_ad_len The total length of additional data in bytes.
* This must be less than `2^16 - 2^8`.
* \param plaintext_len The length in bytes of the plaintext to encrypt or
@ -316,17 +336,11 @@ int mbedtls_ccm_star_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
*
* \return \c 0 on success.
* \return \#MBEDTLS_ERR_CCM_BAD_INPUT on failure:
* \p mode is invalid,
* \p iv_len is invalid (lower than \c 7 or greater than
* \c 13),
* \p total_ad_len is greater than \c 0xFF00.
*/
int mbedtls_ccm_starts( mbedtls_ccm_context *ctx,
int mode,
const unsigned char *iv,
size_t iv_len,
size_t total_ad_len,
size_t plaintext_len );
int mbedtls_ccm_set_lengths( mbedtls_ccm_context *ctx,
size_t total_ad_len,
size_t plaintext_len );
/**
* \brief This function feeds an input buffer as associated data
@ -337,14 +351,17 @@ int mbedtls_ccm_starts( mbedtls_ccm_context *ctx,
* to pass successive parts of the additional data. The
* lengths \p ad_len of the data parts should eventually add
* up exactly to the total length of additional data
* \c total_ad_len passed to mbedtls_ccm_starts(). You may
* not call this function after calling mbedtls_ccm_update().
* \c total_ad_len passed to mbedtls_ccm_set_lengths(). You
* may not call this function after calling
* mbedtls_ccm_update().
*
* \note This function is not implemented in Mbed TLS yet.
*
* \param ctx The CCM context. This must have been started with
* mbedtls_ccm_starts() and must not have yet received
* any input with mbedtls_ccm_update().
* mbedtls_ccm_starts(), the lengths of the message and
* additional data must have been declared with
* mbedtls_ccm_set_lengths() and this must not have yet
* received any input with mbedtls_ccm_update().
* \param ad The buffer holding the additional data, or \c NULL
* if \p ad_len is \c 0.
* \param ad_len The length of the additional data. If \c 0,
@ -369,7 +386,7 @@ int mbedtls_ccm_update_ad( mbedtls_ccm_context *ctx,
* mbedtls_ccm_finish(). The lengths \p input_len of the
* data parts should eventually add up exactly to the
* plaintext length \c plaintext_len passed to
* mbedtls_ccm_starts().
* mbedtls_ccm_set_lengths().
*
* This function may produce output in one of the following
* ways:
@ -384,7 +401,7 @@ int mbedtls_ccm_update_ad( mbedtls_ccm_context *ctx,
* equal to the input length plus the number of bytes (*A*)
* buffered in the previous call to the function (if any).
* The function uses the plaintext length
* \c plaintext_len passed to mbedtls_ccm_starts()
* \c plaintext_len passed to mbedtls_ccm_set_lengths()
* to detect the last part of input data.
*
* In particular:
@ -398,7 +415,9 @@ int mbedtls_ccm_update_ad( mbedtls_ccm_context *ctx,
* \note This function is not implemented in Mbed TLS yet.
*
* \param ctx The CCM context. This must have been started with
* mbedtls_ccm_starts().
* mbedtls_ccm_starts() and the lengths of the message and
* additional data must have been declared with
* mbedtls_ccm_set_lengths().
* \param input The buffer holding the input data. If \p input_len
* is greater than zero, this must be a readable buffer
* of at least \p input_len bytes.
@ -433,7 +452,9 @@ int mbedtls_ccm_update( mbedtls_ccm_context *ctx,
* \note This function is not implemented in Mbed TLS yet.
*
* \param ctx The CCM context. This must have been started with
* mbedtls_ccm_starts().
* mbedtls_ccm_starts() and the lengths of the message and
* additional data must have been declared with
* mbedtls_ccm_set_lengths().
* \param tag The buffer for holding the tag. If \p tag_len is greater
* than zero, this must be a writable buffer of at least \p
* tag_len Bytes.
@ -447,10 +468,10 @@ int mbedtls_ccm_update( mbedtls_ccm_context *ctx,
* the total amount of additional data passed to
* mbedtls_ccm_update_ad() was lower than the total length of
* additional data \c total_ad_len passed to
* mbedtls_ccm_starts(),
* mbedtls_ccm_set_lengths(),
* the total amount of input data passed to
* mbedtls_ccm_update() was lower than the plaintext length
* \c plaintext_len passed to mbedtls_ccm_starts().
* \c plaintext_len passed to mbedtls_ccm_set_lengths().
*/
int mbedtls_ccm_finish( mbedtls_ccm_context *ctx,
unsigned char *tag, size_t tag_len );