v2.dot

digraph DmgEncryptionV2 {

node [shape=record];
passphrase;

Keydata [ label = "<salt> salt | <iter> count | <iv> blobIv | <blob> keydata"; shape=Mrecord; ];

PBKDF2 [ label = "{<in> input  | <out> output }| {<salt> salt | <iter> count}", xlabel = "PBKDF2" ];

TDES [ label = "{<iv> iv | <key> key} | { <in> input | <out> output }", xlabel = "TDES" ];

AES [ label = "{<iv> iv | <key> key} | { <in> input | <out> output }", xlabel = "AES" ];

blocknum;
blockdata;
plaintext;
HMAC [ label = "{<key> key} | { <in> input | <out> output }", xlabel = "HMAC" ];


passphrase -> PBKDF2:in;
Keydata:salt -> PBKDF2:salt
Keydata:iter -> PBKDF2:iter
PBKDF2:out -> TDES:key;
Keydata:iv -> TDES:iv;

Keydata:blob -> TDES:in;

TDES:out -> HMAC:key;
TDES:out -> AES:key;

blocknum -> HMAC:in;
HMAC:out -> AES:iv;
blockdata -> AES:in;
AES:out -> plaintext;

}