Findings:

• Authentication
• Password Authentication Protocol
• User Authentication
• Message Authentication Codes
• Pluggable Authentication Module
• Java Authentication and Authorization Service
• Digest Access Authentication
• mutual authentication
• Scheme
• pyramid scheme
• Color schemes
• No, this is not an evil scheme
• Internal combustion engine valve actuation methods
• Ponzi Scheme
• Teach Yourself Scheme
• Teach Yourself Scheme: 2.1 Simple Data Types
• Teach Yourself Scheme: 2.2 Compound Data Types
• Teach Yourself Scheme: 2.3 Other Data Types
• Teach Yourself Scheme: 2.4 S-Expressions
• Teach Yourself Scheme: 1 Enter Scheme
• Teach Yourself Scheme: 2 Data Types
• Teach Yourself Scheme: 3 Forms
• Teach Yourself Scheme: 3.1 Procedures
• Teach Yourself Scheme: 3.2 apply
• Teach Yourself Scheme: 3.3 Sequencing
• Teach Yourself Scheme: 4 Conditionals
• Teach Yourself Scheme: 4.1 'when' and 'unless'
• Teach Yourself Scheme: 4.2 cond
• Teach Yourself Scheme: 4.3 case
• Teach Yourself Scheme: 4.4 'and' and 'or'
• Teach Yourself Scheme: 5 Lexical Variables
• Teach Yourself Scheme: 5.1 'let' and 'let*'
• Teach Yourself Scheme: 5.2 fluid-let
• Teach Yourself Scheme: 6 Recursion
• Teach Yourself Scheme: 6.1 letrec
• Teach Yourself Scheme: 6.2 Named 'let'
• Teach Yourself Scheme: 6.3 Iteration
• Teach Yourself Scheme: 6.4 Mapping a procedure across a list
• Teach Yourself Scheme: 7 I/O
• Teach Yourself Scheme: 7.1 Reading
• Teach Yourself Scheme: 7.2 Writing
• Teach Yourself Scheme: 7.3 File ports
• Teach Yourself Scheme: 7.4 String ports
• Teach Yourself Scheme: 7.5 Loading files
• Teach Yourself Scheme: 8 Macros
• Teach Yourself Scheme: 8.1 Specifying the expansion as a template
• Teach Yourself Scheme: 8.3 fluid-let
• Teach Yourself Scheme: 9 Structures
• Teach Yourself Scheme: 9.1 Default initializations
• Teach Yourself Scheme: 9.2 'defstruct' definition
• Teach Yourself Scheme: 10 Alists and tables
• Teach Yourself Scheme: 11.1 Checking for and deleting files
• Teach Yourself Scheme: 11.2 Calling operating-system commands
• Teach Yourself Scheme: 11.3 Environment variables
• Teach Yourself Scheme: 12 Objects and classes
• Teach Yourself Scheme: 12.1 A simple object system
• Teach Yourself Scheme: 12.2 Classes are instances too
• Teach Yourself Scheme: 12.3 Multiple inheritance
• Teach Yourself Scheme: 13 Jumps
• Teach Yourself Scheme: 13.1 call-with-current-continuation
• Teach Yourself Scheme: 13.2 Escaping continuations
• Teach Yourself Scheme: 13.3 Tree matching
• Teach Yourself Scheme: 13.4 Coroutines
• Teach Yourself Scheme: 14 Nondeterminism
• Teach Yourself Scheme: 14.1 Description of 'amb'
• Teach Yourself Scheme: 14.2 Implementing 'amb' in Scheme
• Teach Yourself Scheme: 14.3 Using 'amb' in Scheme
• Teach Yourself Scheme: 14.4 Logic puzzles
• Teach Yourself Scheme: 15 Engines
• Teach Yourself Scheme: 15.1 The clock
• Teach Yourself Scheme: 15.2 Flat engines
• Teach Yourself Scheme: 15.3 Nestable engines
• Teach Yourself Scheme: 16 Shell scripts
• Teach Yourself Scheme: 16.1 Hello, World!, again
• Teach Yourself Scheme: 16.2 Scripts with arguments
• Teach Yourself Scheme: 16.3 Example
• Teach Yourself Scheme: 17 CGI scripts
• Teach Yourself Scheme: 17.1 Example: Displaying environment variables
• Teach Yourself Scheme: 17.2 Example: Displaying selected environment variable
• Teach Yourself Scheme: 17.3 CGI script utilities
• Teach Yourself Scheme: 17.4 A calculator via CGI
• Teach Yourself Scheme: R Scheme dialects
• Teach Yourself Scheme: 8.2 Avoiding variable capture inside macros
• Teach Yourself Scheme: S DOS batch files in Scheme
• Teach Yourself Scheme: T A clock for infinity
• Teach Yourself Scheme: U References
• A scheme is not a vision
• rhyme scheme
• ACM Classification Scheme
• Red Hat Naming Scheme
• Motherboards need to have a standard labeling scheme
• Snowy Mountains Hydro-electric Scheme
• Hyphenated name scheme
• MIT Scheme
• Physics and Astronomy Classification Scheme
• Polya urn scheme
• English Scheme
• The Faceted Television Episode Guide-O-Matic Classification Scheme
• Darien Scheme
• Scheme (user)
• Velthius scheme
• Demerit Points Scheme
• Bonzi scheme
• Pilot Scheme
• Unofficial North American cigarette color-coding scheme
• modulation scheme
• National Milk Scheme
• Assisted Places Scheme
• the grand scheme of things
• scheme of things
• Stock market = Pyramid scheme
• The Pirate Reading Scheme
• Color scheme
• Vetting and Barring Scheme
• Organic vegetable box scheme
• Domestic Violence Disclosure Scheme

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