mbedtls_ct_hmac() function

The HMAC context. It must have keys configured with mbedtls_md_hmac_starts() and use one of the following hashes: SHA-384, SHA-256, SHA-1 or MD-5. It is reset using mbedtls_md_hmac_reset() after the computation is complete to prepare for the next computation.

The first part of the message whose HMAC is being calculated. This must point to a readable buffer of \p add_data_len bytes.

The length of \p add_data in bytes.

The buffer containing the second part of the message. This must point to a readable buffer of \p max_data_len bytes.

The length of the data to process in \p data. This must be no less than \p min_data_len and no greater than \p max_data_len.

The minimal length of the second part of the message, read from \p data.

The maximal length of the second part of the message, read from \p data.

The HMAC will be written here. This must point to a writable buffer of sufficient size to hold the HMAC value.

This function clears the internal structure of \p ctx and frees any embedded internal structure, but does not free \p ctx itself. If you have called mbedtls_md_setup() on \p ctx, you must call mbedtls_md_free() when you are no longer using the context. Calling this function if you have previously called mbedtls_md_init() and nothing else is optional. You must not call this function if you have not called mbedtls_md_init().

This function initializes a message-digest context without binding it to a particular message-digest algorithm. This function should always be called first. It prepares the context for mbedtls_md_setup() for binding it to a message-digest algorithm.

PKCS#5 PBKDF2 using HMAC

This function selects the message digest algorithm to use, and allocates internal structures. It should be called after mbedtls_md_init() or mbedtls_md_free(). Makes it necessary to call mbedtls_md_free() later. \deprecated Superseded by mbedtls_md_setup() in 2.0.0