Botan

HKDF

License
Botan is released under the Simplified BSD License (see LICENSE.md)

class  HKDF;

 HKDF, see @rfc 5869 for details


void  expand(ubyte* output, size_t output_len, const(ubyte)* info, size_t info_len);

Only call after extract

Parameters
ubyte* output the output
size_t output_len must be less than 256*hashlen
const(ubyte)* info the underlying data
size_t info_len length of underlying data