nuts-foundation/nuts-node

/*
 * Nuts node
 * Copyright (C) 2023 Nuts community
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package crypto

import (
    "crypto/rand"
    "encoding/base64"
)

// GenerateNonce creates a 256 bit secure random
func GenerateNonce() string {
    buf := make([]byte, 256/8)
    _, err := rand.Read(buf)
    if err != nil {
        panic(err)
    }
    return base64.RawURLEncoding.EncodeToString(buf)
}