ory-am/hydra

// Copyright © 2023 Ory Corp
// SPDX-License-Identifier: Apache-2.0

package x

import (
    "encoding/binary"

    "github.com/pkg/errors"
)

// IntToBytes converts an int64 to a byte slice. It is the inverse of BytesToInt.
func IntToBytes(i int64) []byte {
    b := make([]byte, 8)
    binary.LittleEndian.PutUint64(b, uint64(i))

    return b
}

// BytesToInt converts a byte slice to an int64. It is the inverse of IntToBytes.
func BytesToInt(b []byte) (int64, error) {
    if len(b) != 8 {
        return 0, errors.New("byte slice must be 8 bytes long")
    }
    return int64(binary.LittleEndian.Uint64(b)), nil
}