lazyaesgcm

lazyaesgcm

Lazy AES-GCM in golang on golang.org/x/crypto.

Algorithm details

• Key exchange: X25519
• Encryption: AES
• Authentication: GCM

Install

go get github.com/prongbang/lazyaesgcm

Benchmark

BenchmarkEncrypt-10    	  876500	      1352 ns/op	    1728 B/op	       9 allocs/op
BenchmarkDecrypt-10    	 1317686	       865.9 ns/op	    1408 B/op	       8 allocs/op

How to use

• Generate KeyPair

keyPair := lazyaesgcm.NewKeyPair()

• Key Exchange

clientKp := lazyaesgcm.NewKeyPair()
serverKp := lazyaesgcm.NewKeyPair()

serverKx := serverKp.Exchange(clientKp.Pk)
clientKx := clientKp.Exchange(serverKp.Pk)

• Shared Key

serverSharedKey, _ := serverKx.Secret()
clientSharedKey, _ := clientKx.Secret()

• Encrypt

lazyAesGcm := lazyaesgcm.New()
sharedKey, _ := clientKx.Secret()
key, _ := hex.DecodeString(sharedKey)
plaintext := "text"
ciphertext, err := lazyAesGcm.Encrypt(plaintext, key)

• Decrypt

lazyAesGcm := lazyaesgcm.New()
sharedKey, _ := serverKx.Secret()
key, _ := hex.DecodeString(sharedKey)
ciphertext := "f6a1bd8"
plaintext, err := lazyAesGcm.Decrypt(ciphertext, key)