digraph extended {

size=6.25;
rankdir=LR;
penwidth=1.75;
node [ penwidth = 1.75, shape = "box" ];
edge [ penwidth = 1.75 ];
nodesep=0.2;
ranksep=0.2;
splines = ortho;

entropy [ label = "128, 256,\nOr 512 Bits\nOf Entropy\n(The Seed)" ];
hmac [ label = "512-Bit\nOne-Way\nHash", style = "diagonals" ];

entropy -> hmac;
hmac -> private_key [label = "256 Bits" ];
hmac -> chain_code [label = "256 Bits" ];


subgraph cluster_y {
style = "invis"
public_key [ label = "Master\nPublic Key" ];
private_key [ label = "Master\nPrivate Key" ];
chain_code [ label = "Master\nChain Code" ];
}

style = "invis"

subgraph cluster_x {
extended_private_key [ label = "Master\nExtended\nPrivate Key" ];
extended_public_key [ label = "Master\nExtended\nPublic Key" ];
}

private_key -> public_key [ style = "dashed", constraint = 1 ];
chain_code -> extended_private_key;
chain_code -> extended_public_key;
private_key -> extended_private_key;
public_key -> extended_public_key;

label = "Creation Of The Master Keys"

}