Customizable instant messaging private tags

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304 GENERAL GENERAL
DECRYPTION ENCRYPTION 302
LOGIC LOGIC

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' ROUTER t/

202, 204

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FIG. 4A

402—> <ROOT> 404-—-—> <MESSAGE>

406———————> TODD'S ACCT: 123-456 408——-——-> </MESSAGE>

410—> </ROOT>

FIG. 4B

402-> <ROOT>

404i> <MESSAGE>

407--> TODD'S ACCT:

409——--i> <PRIVATE ENC="BLOWFlSH" KEY ID=TODD"> 412-i—-> %#159

414?-i—> </PRlVATE>

408-——-> </MESSAGE>

410-» </ROOT>

FIG. 5

’—504 0-in TODD'S ‘ KEY ’-504 ( I |TODD'S W JOHN'S JANE'S KEY KEY O I IKEY

TODD JOHN JANE

‘TODD'S ACCT: 123-456 ‘ ‘TODD'S ACCT: 123-456 ‘ ‘TODD'S ACCT: I

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