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gototp

Go Time-Based One Time Password implemention of RFC6238 (http://tools.ietf.org/html/rfc6238)

Based on pyotp: https://github.com/nathforge/pyotp

USAGE

gototp is easy to use:

  1. Generate a random secret to store for a user:
    // A secret length of 10 gives a 16 character secret key
    secret := gototp.RandomSecret(10)
  1. Create the OTP object:
    // Create the OTP
    otp, err := gototp.New(secret)
    if nil!=err {
      panic(err)
  	}
  1. Find the current TOTP code:
    code := otp.Now()

    // Or find the previous code and the next code
    previousCode := otp.FromNow(-1)
    nextCode := otp.FromNow(1)
  1. Generate a Google Charts URL for a QR Code of the Secret, with a label
    // Google Charts URL to display a QR Code, of width (and height) 300px
    url := otp.QRCodeGoogleChartsUrl("My Own TOTP", 300)

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Go Time-Based One Time Password.

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