Files
golib/crypt/interface.go
Nicolas JUHEL b0fd08792c Package AWS
Add feature to change http timeout directly in httpcli store in aws client
  Add copy/MPUCopy function
  Update mpu to allow copy with MPU

Package Cobra
  Fix println by fmt.Fprint to os.stdout

Package Crypt
  Refactor package to use instance of crypt instead of a global crypt unique instance
  Allow to gen key/nonce
  Add io stream reader/writer instead of only buffer slice encoder decoder

Package file/bandwidth
  Add new subpackage bandwith to limit a amount of byte read/write for a duraction
  Use file/progress function increment/reset
  Allow to add custom function increment / reset

Package IOUtils
  Remove useless file error.go, tempFile.go (replaced by package file)
  Move fileDescriptor to a subpackage fileDescriptor: allow to change nb of FD for linux/windows os
  Move Buffer ReadCloser to a new subpackage: allow to add close function to buffer, and expose read / write io interface
  Add sub package multiplexer to allow send/receive multiple io stream into on io stream

Package Socket
  Rework to expose io stream instead of buffer
  Fix minor bugs

Other:
  Bump dependencies
  Update code following bump dependencies
2023-10-03 12:03:36 +02:00

135 lines
2.7 KiB
Go

/*
* MIT License
*
* Copyright (c) 2023 Nicolas JUHEL
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*
*/
package crypt
import (
"crypto/aes"
"crypto/cipher"
"crypto/rand"
"encoding/hex"
"io"
)
type Crypt interface {
Encode(p []byte) []byte
Reader(r io.Reader) io.Reader
EncodeHex(p []byte) []byte
ReaderHex(r io.Reader) io.Reader
Decode(p []byte) ([]byte, error)
Writer(w io.Writer) io.Writer
DecodeHex(p []byte) ([]byte, error)
WriterHex(w io.Writer) io.Writer
}
func GetHexKey(s string) ([32]byte, error) {
var (
err error
dst = make([]byte, 0)
key [32]byte
)
if dst, err = hex.DecodeString(s); err != nil {
return key, err
}
copy(key[:], dst[:32])
return key, nil
}
func GenKey() ([32]byte, error) {
var (
slc = make([]byte, 32)
key [32]byte
)
_, err := io.ReadFull(rand.Reader, slc)
if err != nil {
return key, err
}
copy(key[:], slc[:32])
return key, nil
}
func GetHexNonce(s string) ([12]byte, error) {
var (
err error
dst = make([]byte, 0)
non [12]byte
)
if dst, err = hex.DecodeString(s); err != nil {
return non, err
}
copy(non[:], dst[:12])
return non, nil
}
func GenNonce() ([12]byte, error) {
var (
slc = make([]byte, 32)
non [12]byte
)
_, err := io.ReadFull(rand.Reader, slc)
if err != nil {
return non, err
}
copy(non[:], slc[:12])
return non, nil
}
func New(key [32]byte, nonce [12]byte) (Crypt, error) {
var (
k = make([]byte, 32)
n = make([]byte, 12)
)
copy(k[:], key[:])
copy(n[:], nonce[:])
// When decoded the key should be 16 bytes (AES-128) or 32 (AES-256).
blk, err := aes.NewCipher(k)
if err != nil {
return nil, err
}
gcm, err := cipher.NewGCM(blk)
if err != nil {
return nil, err
}
return &crt{
a: gcm,
n: n,
}, nil
}