Created
September 19, 2024 21:12
-
-
Save brunocalza/cb352b210c9c5ae031317e9e6c483da0 to your computer and use it in GitHub Desktop.
Example of Identity-Based Encryption in Go
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
package main | |
import ( | |
"fmt" | |
"log" | |
"v.io/x/lib/ibe" | |
) | |
const ID = "[email protected]" | |
func main() { | |
master_key, err := setup() | |
if err != nil { | |
log.Fatal(err) | |
} | |
ciphertext, err := encrypt(master_key, "Hello World!") | |
if err != nil { | |
log.Fatal(err) | |
} | |
plaintext, err := decrypt(master_key, ciphertext) | |
if err != nil { | |
log.Fatal(err) | |
} | |
fmt.Println(string(plaintext)) | |
} | |
func setup() (ibe.Master, error) { | |
master_key, err := ibe.SetupBB2() | |
if err != nil { | |
return nil, err | |
} | |
return master_key, nil | |
} | |
func encrypt(master_key ibe.Master, msg string) ([]byte, error) { | |
ciphertext := make([]byte, len(msg)+master_key.Params().CiphertextOverhead()) | |
if err := master_key.Params().Encrypt(ID, []byte(msg), ciphertext); err != nil { | |
return []byte{}, err | |
} | |
return ciphertext, nil | |
} | |
func decrypt(master_key ibe.Master, ciphertext []byte) ([]byte, error) { | |
private_key, err := master_key.Extract(ID) | |
if err != nil { | |
return []byte{}, err | |
} | |
plaintext := make([]byte, len(ciphertext)-master_key.Params().CiphertextOverhead()) | |
if err := private_key.Decrypt(ciphertext, plaintext); err != nil { | |
return []byte{}, err | |
} | |
return plaintext, nil | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment