Advisories for Golang/Github.com/Masterminds/Goutils package

Randomly-generated alphanumeric strings contain significantly less entropy than expected. The RandomAlphaNumeric and CryptoRandomAlphaNumeric functions always return strings containing at least one digit from 0 to 9. This significantly reduces the amount of entropy in short strings generated by these functions.

A security-sensitive bug was discovered by Open Source Developer Erik Sundell of Sundell Open Source Consulting AB. The functions RandomAlphaNumeric(int) and CryptoRandomAlphaNumeric(int) are not as random as they should be.