digraph extended {

size=6.25;
rankdir=LR;
penwidth=1.75;
node [ fontname="Sans", penwidth = 1.75, shape = "box" ];
edge [ fontname="Sans", penwidth = 1.75, style = "" ];
graph [ fontname="Sans" ];
nodesep=0.15;
splines = false;
ranksep = 0.7;

subgraph cluster_parent {
    parent_private_key [ label = "Private", style = "" ];
    parent_chain_code [ label = "Chain", style = "filled" ];
    parent_public_key [ label = "Public", style = "filled" ];

    label = "Parent\n "
}

subgraph cluster_child {
    child_private_key  [ label = "Private" ];
    child_chain_code [ label = "Chain" ];
    child_public_key [ label = "Public" ];

    label = "Child\n "
}

subgraph cluster_grandchild {
    grandchild_private_key [ label = "Private", style = "filled" ];
    grandchild_chain_code [ label = "Chain" ];
    grandchild_public_key [ label = "Public" ];

    label = "Grandchild\n "
}

subgraph cluster_greatgrandchild {
    greatgrandchild_private_key [ label = "Private" ];
    greatgrandchild_chain_code [ label = "Chain" ];
    greatgrandchild_public_key [ label = "Public" ];

    label = "Great-\nGrandchild"
}


parent_public_key -> child_public_key;
parent_public_key -> child_chain_code;
parent_chain_code -> child_chain_code [ label = "Normal Child\nKey Derivation", weight = 100 ];
parent_chain_code -> child_public_key;
parent_chain_code -> child_private_key [ style = "invis" ];
parent_private_key -> child_private_key [ dir = "back", style = "", label = "Parent Key\nDerivation" ];

parent_chain_code -> parent_private_key [ constraint = false ];

child_private_key -> grandchild_private_key [ dir = "back", style = "" ];
child_public_key -> grandchild_chain_code;
child_public_key  -> grandchild_public_key;
child_chain_code -> grandchild_private_key [ style = "invis" ];
child_chain_code -> grandchild_public_key;
child_chain_code -> grandchild_chain_code [ weight = 100 ];

child_chain_code -> child_private_key [ constraint = false ]

grandchild_private_key -> greatgrandchild_private_key;
grandchild_public_key -> greatgrandchild_chain_code;
grandchild_public_key  -> greatgrandchild_public_key;
grandchild_chain_code -> greatgrandchild_private_key;
grandchild_chain_code -> greatgrandchild_public_key;
grandchild_chain_code -> greatgrandchild_chain_code [ weight = 100 ];

grandchild_chain_code -> grandchild_private_key [ constraint = false, style = "invis" ]
greatgrandchild_chain_code -> greatgrandchild_private_key [ constraint = false, style = "invis" ]

label = "Cross-Generational Key Compromise"
}