322 lines
9.3 KiB
Go
322 lines
9.3 KiB
Go
package encryption
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import (
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"crypto/rand"
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"crypto/sha1"
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"crypto/sha256"
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"encoding/base64"
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"fmt"
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"io"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestSecretBytesEncoded(t *testing.T) {
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for _, secretSize := range []int{16, 24, 32} {
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t.Run(fmt.Sprintf("%d", secretSize), func(t *testing.T) {
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secret := make([]byte, secretSize)
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_, err := io.ReadFull(rand.Reader, secret)
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assert.Equal(t, nil, err)
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// We test both padded & raw Base64 to ensure we handle both
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// potential user input routes for Base64
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base64Padded := base64.URLEncoding.EncodeToString(secret)
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sb := SecretBytes(base64Padded)
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assert.Equal(t, secret, sb)
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assert.Equal(t, len(sb), secretSize)
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base64Raw := base64.RawURLEncoding.EncodeToString(secret)
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sb = SecretBytes(base64Raw)
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assert.Equal(t, secret, sb)
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assert.Equal(t, len(sb), secretSize)
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})
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}
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}
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// A string that isn't intended as Base64 and still decodes (but to unintended length)
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// will return the original secret as bytes
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func TestSecretBytesEncodedWrongSize(t *testing.T) {
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for _, secretSize := range []int{15, 20, 28, 33, 44} {
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t.Run(fmt.Sprintf("%d", secretSize), func(t *testing.T) {
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secret := make([]byte, secretSize)
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_, err := io.ReadFull(rand.Reader, secret)
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assert.Equal(t, nil, err)
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// We test both padded & raw Base64 to ensure we handle both
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// potential user input routes for Base64
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base64Padded := base64.URLEncoding.EncodeToString(secret)
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sb := SecretBytes(base64Padded)
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assert.NotEqual(t, secret, sb)
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assert.NotEqual(t, len(sb), secretSize)
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// The given secret is returned as []byte
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assert.Equal(t, base64Padded, string(sb))
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base64Raw := base64.RawURLEncoding.EncodeToString(secret)
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sb = SecretBytes(base64Raw)
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assert.NotEqual(t, secret, sb)
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assert.NotEqual(t, len(sb), secretSize)
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// The given secret is returned as []byte
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assert.Equal(t, base64Raw, string(sb))
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})
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}
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}
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func TestSecretBytesNonBase64(t *testing.T) {
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trailer := "equals=========="
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assert.Equal(t, trailer, string(SecretBytes(trailer)))
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raw16 := "asdflkjhqwer)(*&"
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sb16 := SecretBytes(raw16)
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assert.Equal(t, raw16, string(sb16))
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assert.Equal(t, 16, len(sb16))
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raw24 := "asdflkjhqwer)(*&CJEN#$%^"
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sb24 := SecretBytes(raw24)
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assert.Equal(t, raw24, string(sb24))
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assert.Equal(t, 24, len(sb24))
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raw32 := "asdflkjhqwer)(*&1234lkjhqwer)(*&"
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sb32 := SecretBytes(raw32)
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assert.Equal(t, raw32, string(sb32))
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assert.Equal(t, 32, len(sb32))
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}
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func TestSignAndValidate(t *testing.T) {
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seed := "0123456789abcdef"
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key := "cookie-name"
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value := base64.URLEncoding.EncodeToString([]byte("I am soooo encoded"))
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epoch := "123456789"
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sha256sig := cookieSignature(sha256.New, seed, key, value, epoch)
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sha1sig := cookieSignature(sha1.New, seed, key, value, epoch)
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assert.True(t, checkSignature(sha256sig, seed, key, value, epoch))
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// This should be switched to False after fully deprecating SHA1
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assert.True(t, checkSignature(sha1sig, seed, key, value, epoch))
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assert.False(t, checkSignature(sha256sig, seed, key, "tampered", epoch))
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assert.False(t, checkSignature(sha1sig, seed, key, "tampered", epoch))
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}
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func TestEncodeAndDecodeAccessToken(t *testing.T) {
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const secret = "0123456789abcdefghijklmnopqrstuv"
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const token = "my access token"
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c, err := NewBase64Cipher(NewCFBCipher, []byte(secret))
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assert.Equal(t, nil, err)
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encoded, err := c.Encrypt([]byte(token))
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assert.Equal(t, nil, err)
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decoded, err := c.Decrypt(encoded)
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assert.Equal(t, nil, err)
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assert.NotEqual(t, []byte(token), encoded)
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assert.Equal(t, []byte(token), decoded)
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}
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func TestEncodeAndDecodeAccessTokenB64(t *testing.T) {
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const secretBase64 = "A3Xbr6fu6Al0HkgrP1ztjb-mYiwmxgNPP-XbNsz1WBk="
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const token = "my access token"
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secret, err := base64.URLEncoding.DecodeString(secretBase64)
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assert.Equal(t, nil, err)
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c, err := NewBase64Cipher(NewCFBCipher, []byte(secret))
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assert.Equal(t, nil, err)
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encoded, err := c.Encrypt([]byte(token))
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assert.Equal(t, nil, err)
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decoded, err := c.Decrypt(encoded)
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assert.Equal(t, nil, err)
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assert.NotEqual(t, []byte(token), encoded)
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assert.Equal(t, []byte(token), decoded)
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}
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func TestEncryptAndDecrypt(t *testing.T) {
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// Test our 2 cipher types
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for _, initCipher := range []func([]byte) (Cipher, error){NewCFBCipher, NewGCMCipher} {
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// Test all 3 valid AES sizes
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for _, secretSize := range []int{16, 24, 32} {
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secret := make([]byte, secretSize)
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_, err := io.ReadFull(rand.Reader, secret)
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assert.Equal(t, nil, err)
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c, err := initCipher(secret)
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assert.Equal(t, nil, err)
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// Test various sizes sessions might be
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for _, dataSize := range []int{10, 100, 1000, 5000, 10000} {
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data := make([]byte, dataSize)
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_, err := io.ReadFull(rand.Reader, data)
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assert.Equal(t, nil, err)
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encrypted, err := c.Encrypt(data)
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assert.Equal(t, nil, err)
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assert.NotEqual(t, encrypted, data)
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decrypted, err := c.Decrypt(encrypted)
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assert.Equal(t, nil, err)
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assert.Equal(t, data, decrypted)
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assert.NotEqual(t, encrypted, decrypted)
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}
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}
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}
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}
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func TestEncryptAndDecryptBase64(t *testing.T) {
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// Test our cipher types wrapped in Base64 encoder
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for _, initCipher := range []func([]byte) (Cipher, error){NewCFBCipher, NewGCMCipher} {
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// Test all 3 valid AES sizes
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for _, secretSize := range []int{16, 24, 32} {
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secret := make([]byte, secretSize)
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_, err := io.ReadFull(rand.Reader, secret)
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assert.Equal(t, nil, err)
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c, err := NewBase64Cipher(initCipher, secret)
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assert.Equal(t, nil, err)
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// Test various sizes sessions might be
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for _, dataSize := range []int{10, 100, 1000, 5000, 10000} {
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data := make([]byte, dataSize)
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_, err := io.ReadFull(rand.Reader, data)
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assert.Equal(t, nil, err)
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encrypted, err := c.Encrypt(data)
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assert.Equal(t, nil, err)
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assert.NotEqual(t, encrypted, data)
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decrypted, err := c.Decrypt(encrypted)
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assert.Equal(t, nil, err)
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assert.Equal(t, data, decrypted)
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assert.NotEqual(t, encrypted, decrypted)
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}
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}
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}
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}
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func TestDecryptCFBWrongSecret(t *testing.T) {
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secret1 := []byte("0123456789abcdefghijklmnopqrstuv")
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secret2 := []byte("9876543210abcdefghijklmnopqrstuv")
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c1, err := NewCFBCipher(secret1)
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assert.Equal(t, nil, err)
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c2, err := NewCFBCipher(secret2)
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assert.Equal(t, nil, err)
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data := []byte("f3928pufm982374dj02y485dsl34890u2t9nd4028s94dm58y2394087dhmsyt29h8df")
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ciphertext, err := c1.Encrypt(data)
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assert.Equal(t, nil, err)
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wrongData, err := c2.Decrypt(ciphertext)
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assert.Equal(t, nil, err)
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assert.NotEqual(t, data, wrongData)
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}
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func TestDecryptGCMWrongSecret(t *testing.T) {
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secret1 := []byte("0123456789abcdefghijklmnopqrstuv")
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secret2 := []byte("9876543210abcdefghijklmnopqrstuv")
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c1, err := NewGCMCipher(secret1)
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assert.Equal(t, nil, err)
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c2, err := NewGCMCipher(secret2)
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assert.Equal(t, nil, err)
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data := []byte("f3928pufm982374dj02y485dsl34890u2t9nd4028s94dm58y2394087dhmsyt29h8df")
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ciphertext, err := c1.Encrypt(data)
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assert.Equal(t, nil, err)
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// GCM is authenticated - this should lead to message authentication failed
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_, err = c2.Decrypt(ciphertext)
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assert.Error(t, err)
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}
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func TestIntermixCiphersErrors(t *testing.T) {
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// Encrypt with GCM, Decrypt with CFB: Results in Garbage data
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// Test all 3 valid AES sizes
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for _, secretSize := range []int{16, 24, 32} {
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secret := make([]byte, secretSize)
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_, err := io.ReadFull(rand.Reader, secret)
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assert.Equal(t, nil, err)
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gcm, err := NewGCMCipher(secret)
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assert.Equal(t, nil, err)
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cfb, err := NewCFBCipher(secret)
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assert.Equal(t, nil, err)
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// Test various sizes sessions might be
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for _, dataSize := range []int{10, 100, 1000, 5000, 10000} {
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data := make([]byte, dataSize)
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_, err := io.ReadFull(rand.Reader, data)
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assert.Equal(t, nil, err)
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encrypted, err := gcm.Encrypt(data)
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assert.Equal(t, nil, err)
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assert.NotEqual(t, encrypted, data)
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decrypted, err := cfb.Decrypt(encrypted)
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assert.Equal(t, nil, err)
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// Data is mangled
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assert.NotEqual(t, data, decrypted)
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assert.NotEqual(t, encrypted, decrypted)
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}
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}
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// Encrypt with CFB, Decrypt with GCM: Results in errors
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// Test all 3 valid AES sizes
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for _, secretSize := range []int{16, 24, 32} {
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secret := make([]byte, secretSize)
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_, err := io.ReadFull(rand.Reader, secret)
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assert.Equal(t, nil, err)
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gcm, err := NewGCMCipher(secret)
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assert.Equal(t, nil, err)
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cfb, err := NewCFBCipher(secret)
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assert.Equal(t, nil, err)
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// Test various sizes sessions might be
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for _, dataSize := range []int{10, 100, 1000, 5000, 10000} {
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data := make([]byte, dataSize)
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_, err := io.ReadFull(rand.Reader, data)
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assert.Equal(t, nil, err)
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encrypted, err := cfb.Encrypt(data)
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assert.Equal(t, nil, err)
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assert.NotEqual(t, encrypted, data)
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// GCM is authenticated - this should lead to message authentication failed
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_, err = gcm.Decrypt(encrypted)
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assert.Error(t, err)
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}
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}
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}
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func TestEncodeIntoAndDecodeIntoAccessToken(t *testing.T) {
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const secret = "0123456789abcdefghijklmnopqrstuv"
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c, err := NewCipher([]byte(secret))
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assert.Equal(t, nil, err)
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token := "my access token"
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originalToken := token
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assert.Equal(t, nil, c.EncryptInto(&token))
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assert.NotEqual(t, originalToken, token)
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assert.Equal(t, nil, c.DecryptInto(&token))
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assert.Equal(t, originalToken, token)
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// Check no errors with empty or nil strings
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empty := ""
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assert.Equal(t, nil, c.EncryptInto(&empty))
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assert.Equal(t, nil, c.DecryptInto(&empty))
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assert.Equal(t, nil, c.EncryptInto(nil))
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assert.Equal(t, nil, c.DecryptInto(nil))
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}
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