captcha

Documentation

Index

• func ChallengeUser(c Challenger, p Prompter) bool
• type Challenger
• type Prompter

Functions

func ChallengeUser

func ChallengeUser(c Challenger, p Prompter) bool

ChallengeUser requests a challenge from c and prompts the user for an answer using p. If the user's answer matches the challenge then ChallengeUser returns true. All comparisons are performed using constant-time checks to prevent information leaks.

Types

type Challenger

type Challenger interface {
	Challenge() (img image.Image, imgText string)
}

Challenger is implemented by objects that can generate CAPTCHA image challenges.

type Prompter

type Prompter interface {
	Prompt(img image.Image) string
}

Prompter is implemented by objects that display a CAPTCHA image to the user, ask them to type their contents and return back their response.