mbedtls_pkcs5_pbkdf2_hmac() function

Generic HMAC context

Password to use when generating key

Length of password

Salt to use when generating key

Length of salt

Iteration count

Length of generated key in bytes

Generated key. Must be at least as big as key_length

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.

Compute the HMAC of variable-length data with constant flow. This function computes the HMAC of the concatenation of \p add_data and \p data, and does with a code flow and memory access pattern that does not depend on \p data_len_secret, but only on \p min_data_len and \p max_data_len. In particular, this function always reads exactly \p max_data_len bytes from \p data.

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 \deprecated Superseded by mbedtls_md_setup() in 2.0.0