Function assertCryptoRand

command/ca/init.go:816–823

assertCryptoRand asserts that a cryptographically secure random number generator is available, it will return an error otherwise.

()

// assertCryptoRand asserts that a cryptographically secure random number
// generator is available, it will return an error otherwise.
func assertCryptoRand() error {
	buf := make([]byte, 64)
	_, err := io.ReadFull(rand.Reader, buf)
	if err != nil {
		return errs.NewError("crypto/rand is unavailable: Read() failed with %#v", err)
	}
	return nil
}

// processDNSValue reads DNS names from user supplied DNS value
// and transforms it into DNS names and IP addresses.