231 lines
6.3 KiB
Go
231 lines
6.3 KiB
Go
package encryption
|
|
|
|
import (
|
|
"crypto/rand"
|
|
"encoding/base64"
|
|
"fmt"
|
|
"io"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
func TestEncodeAndDecodeAccessToken(t *testing.T) {
|
|
const secret = "0123456789abcdefghijklmnopqrstuv"
|
|
const token = "my access token"
|
|
c, err := NewBase64Cipher(NewCFBCipher, []byte(secret))
|
|
assert.Equal(t, nil, err)
|
|
|
|
encoded, err := c.Encrypt([]byte(token))
|
|
assert.Equal(t, nil, err)
|
|
|
|
decoded, err := c.Decrypt(encoded)
|
|
assert.Equal(t, nil, err)
|
|
|
|
assert.NotEqual(t, []byte(token), encoded)
|
|
assert.Equal(t, []byte(token), decoded)
|
|
}
|
|
|
|
func TestEncodeAndDecodeAccessTokenB64(t *testing.T) {
|
|
const secretBase64 = "A3Xbr6fu6Al0HkgrP1ztjb-mYiwmxgNPP-XbNsz1WBk="
|
|
const token = "my access token"
|
|
|
|
secret, err := base64.URLEncoding.DecodeString(secretBase64)
|
|
assert.Equal(t, nil, err)
|
|
c, err := NewBase64Cipher(NewCFBCipher, []byte(secret))
|
|
assert.Equal(t, nil, err)
|
|
|
|
encoded, err := c.Encrypt([]byte(token))
|
|
assert.Equal(t, nil, err)
|
|
|
|
decoded, err := c.Decrypt(encoded)
|
|
assert.Equal(t, nil, err)
|
|
|
|
assert.NotEqual(t, []byte(token), encoded)
|
|
assert.Equal(t, []byte(token), decoded)
|
|
}
|
|
|
|
func TestEncryptAndDecrypt(t *testing.T) {
|
|
// Test our 2 cipher types
|
|
cipherInits := map[string]func([]byte) (Cipher, error){
|
|
"CFB": NewCFBCipher,
|
|
"GCM": NewGCMCipher,
|
|
}
|
|
for name, initCipher := range cipherInits {
|
|
t.Run(name, func(t *testing.T) {
|
|
// Test all 3 valid AES sizes
|
|
for _, secretSize := range []int{16, 24, 32} {
|
|
t.Run(fmt.Sprintf("%d", secretSize), func(t *testing.T) {
|
|
secret := make([]byte, secretSize)
|
|
_, err := io.ReadFull(rand.Reader, secret)
|
|
assert.Equal(t, nil, err)
|
|
|
|
// Test Standard & Base64 wrapped
|
|
cstd, err := initCipher(secret)
|
|
assert.Equal(t, nil, err)
|
|
|
|
cb64, err := NewBase64Cipher(initCipher, secret)
|
|
assert.Equal(t, nil, err)
|
|
|
|
ciphers := map[string]Cipher{
|
|
"Standard": cstd,
|
|
"Base64": cb64,
|
|
}
|
|
|
|
for cName, c := range ciphers {
|
|
t.Run(cName, func(t *testing.T) {
|
|
// Test various sizes sessions might be
|
|
for _, dataSize := range []int{10, 100, 1000, 5000, 10000} {
|
|
t.Run(fmt.Sprintf("%d", dataSize), func(t *testing.T) {
|
|
runEncryptAndDecrypt(t, c, dataSize)
|
|
})
|
|
}
|
|
})
|
|
}
|
|
})
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func runEncryptAndDecrypt(t *testing.T, c Cipher, dataSize int) {
|
|
data := make([]byte, dataSize)
|
|
_, err := io.ReadFull(rand.Reader, data)
|
|
assert.Equal(t, nil, err)
|
|
|
|
// Ensure our Encrypt function doesn't encrypt in place
|
|
immutableData := make([]byte, len(data))
|
|
copy(immutableData, data)
|
|
|
|
encrypted, err := c.Encrypt(data)
|
|
assert.Equal(t, nil, err)
|
|
assert.NotEqual(t, encrypted, data)
|
|
// Encrypt didn't operate in-place on []byte
|
|
assert.Equal(t, data, immutableData)
|
|
|
|
// Ensure our Decrypt function doesn't decrypt in place
|
|
immutableEnc := make([]byte, len(encrypted))
|
|
copy(immutableEnc, encrypted)
|
|
|
|
decrypted, err := c.Decrypt(encrypted)
|
|
assert.Equal(t, nil, err)
|
|
// Original data back
|
|
assert.Equal(t, data, decrypted)
|
|
// Decrypt didn't operate in-place on []byte
|
|
assert.Equal(t, encrypted, immutableEnc)
|
|
// Encrypt/Decrypt actually did something
|
|
assert.NotEqual(t, encrypted, decrypted)
|
|
}
|
|
|
|
func TestDecryptCFBWrongSecret(t *testing.T) {
|
|
secret1 := []byte("0123456789abcdefghijklmnopqrstuv")
|
|
secret2 := []byte("9876543210abcdefghijklmnopqrstuv")
|
|
|
|
c1, err := NewCFBCipher(secret1)
|
|
assert.Equal(t, nil, err)
|
|
|
|
c2, err := NewCFBCipher(secret2)
|
|
assert.Equal(t, nil, err)
|
|
|
|
data := []byte("f3928pufm982374dj02y485dsl34890u2t9nd4028s94dm58y2394087dhmsyt29h8df")
|
|
|
|
ciphertext, err := c1.Encrypt(data)
|
|
assert.Equal(t, nil, err)
|
|
|
|
wrongData, err := c2.Decrypt(ciphertext)
|
|
assert.Equal(t, nil, err)
|
|
assert.NotEqual(t, data, wrongData)
|
|
}
|
|
|
|
func TestDecryptGCMWrongSecret(t *testing.T) {
|
|
secret1 := []byte("0123456789abcdefghijklmnopqrstuv")
|
|
secret2 := []byte("9876543210abcdefghijklmnopqrstuv")
|
|
|
|
c1, err := NewGCMCipher(secret1)
|
|
assert.Equal(t, nil, err)
|
|
|
|
c2, err := NewGCMCipher(secret2)
|
|
assert.Equal(t, nil, err)
|
|
|
|
data := []byte("f3928pufm982374dj02y485dsl34890u2t9nd4028s94dm58y2394087dhmsyt29h8df")
|
|
|
|
ciphertext, err := c1.Encrypt(data)
|
|
assert.Equal(t, nil, err)
|
|
|
|
// GCM is authenticated - this should lead to message authentication failed
|
|
_, err = c2.Decrypt(ciphertext)
|
|
assert.Error(t, err)
|
|
}
|
|
|
|
// Encrypt with GCM, Decrypt with CFB: Results in Garbage data
|
|
func TestGCMtoCFBErrors(t *testing.T) {
|
|
// Test all 3 valid AES sizes
|
|
for _, secretSize := range []int{16, 24, 32} {
|
|
t.Run(fmt.Sprintf("%d", secretSize), func(t *testing.T) {
|
|
secret := make([]byte, secretSize)
|
|
_, err := io.ReadFull(rand.Reader, secret)
|
|
assert.Equal(t, nil, err)
|
|
|
|
gcm, err := NewGCMCipher(secret)
|
|
assert.Equal(t, nil, err)
|
|
|
|
cfb, err := NewCFBCipher(secret)
|
|
assert.Equal(t, nil, err)
|
|
|
|
// Test various sizes sessions might be
|
|
for _, dataSize := range []int{10, 100, 1000, 5000, 10000} {
|
|
t.Run(fmt.Sprintf("%d", dataSize), func(t *testing.T) {
|
|
data := make([]byte, dataSize)
|
|
_, err := io.ReadFull(rand.Reader, data)
|
|
assert.Equal(t, nil, err)
|
|
|
|
encrypted, err := gcm.Encrypt(data)
|
|
assert.Equal(t, nil, err)
|
|
assert.NotEqual(t, encrypted, data)
|
|
|
|
decrypted, err := cfb.Decrypt(encrypted)
|
|
assert.Equal(t, nil, err)
|
|
// Data is mangled
|
|
assert.NotEqual(t, data, decrypted)
|
|
assert.NotEqual(t, encrypted, decrypted)
|
|
})
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
// Encrypt with CFB, Decrypt with GCM: Results in errors
|
|
func TestCFBtoGCMErrors(t *testing.T) {
|
|
// Test all 3 valid AES sizes
|
|
for _, secretSize := range []int{16, 24, 32} {
|
|
t.Run(fmt.Sprintf("%d", secretSize), func(t *testing.T) {
|
|
secret := make([]byte, secretSize)
|
|
_, err := io.ReadFull(rand.Reader, secret)
|
|
assert.Equal(t, nil, err)
|
|
|
|
gcm, err := NewGCMCipher(secret)
|
|
assert.Equal(t, nil, err)
|
|
|
|
cfb, err := NewCFBCipher(secret)
|
|
assert.Equal(t, nil, err)
|
|
|
|
// Test various sizes sessions might be
|
|
for _, dataSize := range []int{10, 100, 1000, 5000, 10000} {
|
|
t.Run(fmt.Sprintf("%d", dataSize), func(t *testing.T) {
|
|
data := make([]byte, dataSize)
|
|
_, err := io.ReadFull(rand.Reader, data)
|
|
assert.Equal(t, nil, err)
|
|
|
|
encrypted, err := cfb.Encrypt(data)
|
|
assert.Equal(t, nil, err)
|
|
assert.NotEqual(t, encrypted, data)
|
|
|
|
// GCM is authenticated - this should lead to message authentication failed
|
|
_, err = gcm.Decrypt(encrypted)
|
|
assert.Error(t, err)
|
|
})
|
|
}
|
|
})
|
|
}
|
|
}
|