Index_O

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O

One-time Passwords In Everything (OPIE), 32

one-time passwords (OTP), 32, 38

Open dialog box, 138

Open menu option, 137, 138

open source software, 42–43

Open Systems Interconnection (OSI) model

application layer, 16

data link layer, 17

vs. DoD model, 18

list of layers, 16–17

network layer, 17

overview, 16

physical layer, 17

presentation layer, 16

session layer, 17

transport layer, 17

opening files, 138

OpenSSL, 103

operators

arithmetic, 218

bitwise, 218, 221–223

comparison, 230–231

Equal To operator, 218

Greater Than operator, 218, 223

Greater Than or Equal To operator, 218

Less Than operator, 218, 223

Less Than or Equal To operator, 218

logical, 212–213, 244

matches operator, 235

Not Equal To operator, 218

not operator, 212–213, 244

and operator, 212–213, 244

or operator, 212–213, 244

order of precedence, 213, 259

OPIE (One-time Passwords In Everything), 32

or operator, 212–213, 244

OSI model. See Open Systems Interconnection (OSI) model

OTP (one-time passwords), 32, 38

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