EVP_MD

type EVP_MD = record

  _type: cint;

  pkey_type: cint;

  md_size: cint;

  init: pointer;

  update: pointer;

  final: pointer;

  sign: pointer;

  verify: pointer;

  required_pkey_type: array [0..4] of cint;

  block_size: cint;

  ctx_size: cint;

end;