storj/pkg/encryption/examples_test.go
2018-11-13 14:21:52 +02:00

63 lines
2.0 KiB
Go

// Copyright (C) 2018 Storj Labs, Inc.
// See LICENSE for copying information.
package encryption_test
import (
"encoding/hex"
"fmt"
"storj.io/storj/pkg/encryption"
"storj.io/storj/pkg/storj"
)
func ExampleEncryptPath() {
var path = "fold1/fold2/fold3/file.txt"
// seed
seed := new(storj.Key)
for i := range seed {
seed[i] = byte(i)
}
fmt.Printf("root key (%d bytes): %s\n", len(seed), hex.EncodeToString(seed[:]))
// use the seed for encrypting the path
encryptedPath, err := encryption.EncryptPath(path, storj.AESGCM, seed)
if err != nil {
panic(err)
}
fmt.Println("path to encrypt:", path)
fmt.Println("encrypted path: ", encryptedPath)
// decrypting the path
decryptedPath, err := encryption.DecryptPath(encryptedPath, storj.AESGCM, seed)
if err != nil {
panic(err)
}
fmt.Println("decrypted path: ", decryptedPath)
// handling of shared path
sharedPath := storj.JoinPaths(storj.SplitPath(encryptedPath)[2:]...)
fmt.Println("shared path: ", sharedPath)
derivedKey, err := encryption.DerivePathKey(decryptedPath, seed, 2)
if err != nil {
panic(err)
}
fmt.Printf("derived key (%d bytes): %s\n", len(derivedKey), hex.EncodeToString(derivedKey[:]))
decryptedPath, err = encryption.DecryptPath(sharedPath, storj.AESGCM, derivedKey)
if err != nil {
panic(err)
}
fmt.Println("decrypted path: ", decryptedPath)
// Output:
// root key (32 bytes): 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
// path to encrypt: fold1/fold2/fold3/file.txt
// encrypted path: urxuYzqG_ZlJfBhkGaz87WvvnCZaYD7qf1_ZN_Pd91n5/IyncDwLhWPv4F7EaoUivwICnUeJMWlUnMATL4faaoH2s/_1gitX6uPd3etc3RgoD9R1waT5MPKrlrY32ehz_vqlOv/6qO4DU5AHFabE2r7hmAauvnomvtNByuO-FCw4ch_xaVR3SPE
// decrypted path: fold1/fold2/fold3/file.txt
// shared path: _1gitX6uPd3etc3RgoD9R1waT5MPKrlrY32ehz_vqlOv/6qO4DU5AHFabE2r7hmAauvnomvtNByuO-FCw4ch_xaVR3SPE
// derived key (32 bytes): 909db5ccf2b645e3352ee8212305596ed514d9f84d5acd21d93b4527d2a0c7e1
// decrypted path: fold3/file.txt
}