mbedtls_ccm_update() function

This function feeds an input buffer into an ongoing CCM encryption or decryption operation. You may call this function zero, one or more times to pass successive parts of the input: the plaintext to encrypt, or the ciphertext (not including the tag) to decrypt. After the last part of the input, call 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_set_lengths(). This function may produce output in one of the following ways: - Immediate output: the output length is always equal to the input length. - Buffered output: except for the last part of input data, the output consists of a whole number of 16-byte blocks. If the total input length so far (not including associated data) is 16 \* *B* + *A* with *A* < 16 then the total output length is 16 \* *B*. For the last part of input data, the output length is 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_set_lengths() to detect the last part of input data. In particular: - It is always correct to call this function with \p output_size >= \p input_len + 15. - If \p input_len is a multiple of 16 for all the calls to this function during an operation (not necessary for the last one) then it is correct to use \p output_size =\p input_len.

Found 16 other functions taking a mbedtls_ccm_context argument: