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salt.go
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/
salt.go
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// Copyright 2016 Documize Inc. <legal@documize.com>. All rights reserved.
//
// This software (Documize Community Edition) is licensed under
// GNU AGPL v3 http://www.gnu.org/licenses/agpl-3.0.en.html
//
// You can operate outside the AGPL restrictions by purchasing
// Documize Enterprise Edition and obtaining a commercial license
// by contacting <sales@documize.com>.
//
// https://documize.com
package secrets
import (
"crypto/rand"
"fmt"
)
// RandSalt generates 16 character value for use in JWT token as salt.
func RandSalt() string {
b := make([]byte, 17)
_, err := rand.Read(b)
if err != nil {
return ""
}
for k, v := range b {
if (v >= 'a' && v <= 'z') || (v >= 'A' && v <= 'Z') || (v >= '0' && v <= '0') {
b[k] = v
} else {
s := fmt.Sprintf("%x", v)
b[k] = s[0]
}
}
return string(b)
}