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    Copyright
    Foreword
    Preface
    Ch. 1. Safe Initialization
    Ch. 2. Access Control
    Ch. 3. Input Validation
    Ch. 4. Symmetric Cryptography Fundamentals
    Ch. 5. Symmetric Encryption
    Ch. 6. Hashes and Message Authentication
    Ch. 7. Public Key Cryptography
    Ch. 8. Authentication and Key Exchange
    Ch. 9. Networking
    Ch. 10. Public Key Infrastructure
    Ch. 11. Random Numbers
    Recipe 11.1. Determining What Kind of Random Numbers to Use
    Recipe 11.2. Using a Generic API for Randomness and Entropy
    Recipe 11.3. Using the Standard Unix Randomness Infrastructure
    Recipe 11.4. Using the Standard Windows Randomness Infrastructure
    Recipe 11.5. Using an Application-Level Generator
    Recipe 11.6. Reseeding a Pseudo-Random Number Generator
    Recipe 11.7. Using an Entropy Gathering Daemon-Compatible Solution
    Recipe 11.8. Getting Entropy or Pseudo-Randomness Using EGADS
    Recipe 11.9. Using the OpenSSL Random Number API
    Recipe 11.10. Getting Random Integers
    Recipe 11.11. Getting a Random Integer in a Range
    Recipe 11.12. Getting a Random Floating-Point Value with Uniform Distribution
    Recipe 11.13. Getting Floating-Point Values with Nonuniform Distributions
    Recipe 11.14. Getting a Random Printable ASCII String
    Recipe 11.15. Shuffling Fairly
    Recipe 11.16. Compressing Data with Entropy into a Fixed-Size Seed
    Recipe 11.17. Getting Entropy at Startup
    Recipe 11.18. Statistically Testing Random Numbers
    Recipe 11.19. Performing Entropy Estimation and Management
    Recipe 11.20. Gathering Entropy from the Keyboard
    Recipe 11.21. Gathering Entropy from Mouse Events on Windows
    Recipe 11.22. Gathering Entropy from Thread Timings
    Recipe 11.23. Gathering Entropy from System State
    Ch. 12. Anti-Tampering
    Ch. 13. Other Topics
    Colophon
    Index
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    Chapter 11. Random Numbers > Getting a Random Printable ASCII String

    Recipe 11.14. Getting a Random Printable ASCII String

    11.14.1. Problem

    You want to get a random printable ASCII string.

    11.14.2. Solution

    If you do not want whitespace characters, the printable ASCII characters have values from 33 to 126, inclusive. Simply get a random number in that range for each character.


      

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