feat: Implement Go encoding types as Sigils
This commit introduces a new `enchantrix` package that provides a flexible and powerful way to transform data using a "Sigil" interface. The package includes implementations for various encoding types (hex, base64, gzip, json) and a comprehensive set of cryptographic hash functions. The `trix` package has been refactored to use the new `enchantrix` package, and its API has been simplified to use string identifiers for Sigils, making it easier to use and decoupling it from the implementation details of the `enchantrix` package. All new functionality is fully tested, and the existing tests have been updated to reflect the API changes.
This commit is contained in:
google-labs-jules[bot]
parent
f88d37cb4a
commit
9dcb399988
8 changed files with 426 additions and 77 deletions
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@ -5,6 +5,7 @@ import (
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"fmt"
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"log"
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"time"
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"github.com/Snider/Enchantrix/pkg/crypt"
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"github.com/Snider/Enchantrix/pkg/crypt/std/chachapoly"
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"github.com/Snider/Enchantrix/pkg/trix"
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@ -20,9 +21,9 @@ func main() {
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// 2. Create a Trix container with the plaintext and attach sigils
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trixContainer := &trix.Trix{
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Header: map[string]interface{}{},
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Payload: plaintext,
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InSigils: []trix.Sigil{&trix.ReverseSigil{}},
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Header: map[string]interface{}{},
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Payload: plaintext,
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InSigils: []string{"reverse"},
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}
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// 3. Pack the Trix container to apply the sigil transformations
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@ -31,7 +32,6 @@ func main() {
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}
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fmt.Printf("Packed (obfuscated) payload: %x\n", trixContainer.Payload)
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// 4. Encrypt the packed payload
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ciphertext, err := chachapoly.Encrypt(trixContainer.Payload, key)
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if err != nil {
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@ -49,7 +49,6 @@ func main() {
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}
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trixContainer.ChecksumAlgo = crypt.SHA256
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// 6. Encode the .trix container into its binary format
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magicNumber := "MyT1"
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encodedTrix, err := trix.Encode(trixContainer, magicNumber)
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24
pkg/enchantrix/enchantrix.go
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24
pkg/enchantrix/enchantrix.go
Normal file
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@ -0,0 +1,24 @@
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package enchantrix
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// Sigil defines the interface for a data transformer.
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type Sigil interface {
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In(data []byte) ([]byte, error)
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Out(data []byte) ([]byte, error)
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}
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// Enchantrix defines the interface for acceptance testing.
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type Enchantrix interface {
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Transmute(data []byte, sigils []Sigil) ([]byte, error)
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}
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// Transmute is a helper function for applying a series of sigils to data.
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func Transmute(data []byte, sigils []Sigil) ([]byte, error) {
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var err error
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for _, sigil := range sigils {
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data, err = sigil.In(data)
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if err != nil {
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return nil, err
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}
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}
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return data, nil
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}
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19
pkg/enchantrix/enchantrix_test.go
Normal file
19
pkg/enchantrix/enchantrix_test.go
Normal file
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@ -0,0 +1,19 @@
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package enchantrix_test
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import (
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"testing"
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"github.com/Snider/Enchantrix/pkg/enchantrix"
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"github.com/stretchr/testify/assert"
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)
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func TestTransmute(t *testing.T) {
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data := []byte("hello")
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sigils := []enchantrix.Sigil{
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&enchantrix.ReverseSigil{},
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&enchantrix.HexSigil{},
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}
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result, err := enchantrix.Transmute(data, sigils)
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assert.NoError(t, err)
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assert.Equal(t, "6f6c6c6568", string(result))
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}
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32
pkg/enchantrix/factory_test.go
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32
pkg/enchantrix/factory_test.go
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@ -0,0 +1,32 @@
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package enchantrix_test
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import (
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"testing"
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"github.com/Snider/Enchantrix/pkg/enchantrix"
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"github.com/stretchr/testify/assert"
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)
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func TestNewSigil(t *testing.T) {
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t.Run("ValidSigils", func(t *testing.T) {
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validNames := []string{
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"reverse", "hex", "base64", "gzip", "json", "json-indent",
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"md4", "md5", "sha1", "sha224", "sha256", "sha384", "sha512",
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"ripemd160", "sha3-224", "sha3-256", "sha3-384", "sha3-512",
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"sha512-224", "sha512-256", "blake2s-256", "blake2b-256",
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"blake2b-384", "blake2b-512",
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}
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for _, name := range validNames {
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sigil, err := enchantrix.NewSigil(name)
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assert.NoError(t, err)
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assert.NotNil(t, sigil)
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}
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})
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t.Run("InvalidSigil", func(t *testing.T) {
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sigil, err := enchantrix.NewSigil("invalid-sigil-name")
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assert.Error(t, err)
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assert.Nil(t, sigil)
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assert.Contains(t, err.Error(), "unknown sigil name")
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})
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}
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240
pkg/enchantrix/sigils.go
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240
pkg/enchantrix/sigils.go
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@ -0,0 +1,240 @@
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package enchantrix
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import (
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"bytes"
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"compress/gzip"
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"crypto"
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"crypto/md5"
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"crypto/sha1"
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"crypto/sha256"
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"crypto/sha512"
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"encoding/base64"
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"encoding/hex"
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"encoding/json"
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"errors"
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"io"
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"golang.org/x/crypto/blake2b"
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"golang.org/x/crypto/blake2s"
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"golang.org/x/crypto/md4"
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"golang.org/x/crypto/ripemd160"
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"golang.org/x/crypto/sha3"
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)
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// ReverseSigil is a Sigil that reverses the bytes of the payload.
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type ReverseSigil struct{}
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// In reverses the bytes of the data.
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func (s *ReverseSigil) In(data []byte) ([]byte, error) {
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reversed := make([]byte, len(data))
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for i, j := 0, len(data)-1; i < len(data); i, j = i+1, j-1 {
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reversed[i] = data[j]
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}
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return reversed, nil
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}
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// Out reverses the bytes of the data.
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func (s *ReverseSigil) Out(data []byte) ([]byte, error) {
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return s.In(data)
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}
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// HexSigil is a Sigil that encodes/decodes data to/from hexadecimal.
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type HexSigil struct{}
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// In encodes the data to hexadecimal.
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func (s *HexSigil) In(data []byte) ([]byte, error) {
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dst := make([]byte, hex.EncodedLen(len(data)))
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hex.Encode(dst, data)
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return dst, nil
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}
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// Out decodes the data from hexadecimal.
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func (s *HexSigil) Out(data []byte) ([]byte, error) {
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dst := make([]byte, hex.DecodedLen(len(data)))
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_, err := hex.Decode(dst, data)
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return dst, err
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}
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// Base64Sigil is a Sigil that encodes/decodes data to/from base64.
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type Base64Sigil struct{}
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// In encodes the data to base64.
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func (s *Base64Sigil) In(data []byte) ([]byte, error) {
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dst := make([]byte, base64.StdEncoding.EncodedLen(len(data)))
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base64.StdEncoding.Encode(dst, data)
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return dst, nil
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}
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// Out decodes the data from base64.
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func (s *Base64Sigil) Out(data []byte) ([]byte, error) {
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dst := make([]byte, base64.StdEncoding.DecodedLen(len(data)))
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n, err := base64.StdEncoding.Decode(dst, data)
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return dst[:n], err
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}
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// GzipSigil is a Sigil that compresses/decompresses data using gzip.
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type GzipSigil struct{}
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// In compresses the data using gzip.
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func (s *GzipSigil) In(data []byte) ([]byte, error) {
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var b bytes.Buffer
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gz := gzip.NewWriter(&b)
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if _, err := gz.Write(data); err != nil {
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return nil, err
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}
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if err := gz.Close(); err != nil {
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return nil, err
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}
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return b.Bytes(), nil
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}
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// Out decompresses the data using gzip.
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func (s *GzipSigil) Out(data []byte) ([]byte, error) {
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r, err := gzip.NewReader(bytes.NewReader(data))
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if err != nil {
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return nil, err
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}
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defer r.Close()
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return io.ReadAll(r)
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}
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// JSONSigil is a Sigil that compacts or indents JSON data.
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type JSONSigil struct{ Indent bool }
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// In compacts or indents the JSON data.
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func (s *JSONSigil) In(data []byte) ([]byte, error) {
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if s.Indent {
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var out bytes.Buffer
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err := json.Indent(&out, data, "", " ")
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return out.Bytes(), err
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}
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var out bytes.Buffer
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err := json.Compact(&out, data)
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return out.Bytes(), err
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}
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// Out is a no-op for JSONSigil.
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func (s *JSONSigil) Out(data []byte) ([]byte, error) {
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// For simplicity, Out is a no-op. The primary use is formatting.
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return data, nil
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}
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// HashSigil is a Sigil that hashes the data using a specified algorithm.
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type HashSigil struct {
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Hash crypto.Hash
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}
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// NewHashSigil creates a new HashSigil.
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func NewHashSigil(h crypto.Hash) *HashSigil {
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return &HashSigil{Hash: h}
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}
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// In hashes the data.
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func (s *HashSigil) In(data []byte) ([]byte, error) {
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var h io.Writer
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switch s.Hash {
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case crypto.MD4:
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h = md4.New()
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case crypto.MD5:
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h = md5.New()
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case crypto.SHA1:
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h = sha1.New()
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case crypto.SHA224:
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h = sha256.New224()
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case crypto.SHA256:
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h = sha256.New()
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case crypto.SHA384:
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h = sha512.New384()
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case crypto.SHA512:
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h = sha512.New()
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case crypto.RIPEMD160:
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h = ripemd160.New()
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case crypto.SHA3_224:
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h = sha3.New224()
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case crypto.SHA3_256:
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h = sha3.New256()
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case crypto.SHA3_384:
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h = sha3.New384()
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case crypto.SHA3_512:
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h = sha3.New512()
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case crypto.SHA512_224:
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h = sha512.New512_224()
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case crypto.SHA512_256:
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h = sha512.New512_256()
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case crypto.BLAKE2s_256:
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h, _ = blake2s.New256(nil)
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case crypto.BLAKE2b_256:
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h, _ = blake2b.New256(nil)
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case crypto.BLAKE2b_384:
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h, _ = blake2b.New384(nil)
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case crypto.BLAKE2b_512:
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h, _ = blake2b.New512(nil)
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default:
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// MD5SHA1 is not supported as a direct hash
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return nil, errors.New("enchantrix: hash algorithm not available")
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}
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h.Write(data)
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return h.(interface{ Sum([]byte) []byte }).Sum(nil), nil
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}
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// Out is a no-op for HashSigil.
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func (s *HashSigil) Out(data []byte) ([]byte, error) {
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return data, nil
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}
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// NewSigil is a factory function that returns a Sigil based on a string name.
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func NewSigil(name string) (Sigil, error) {
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switch name {
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case "reverse":
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return &ReverseSigil{}, nil
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case "hex":
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return &HexSigil{}, nil
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case "base64":
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return &Base64Sigil{}, nil
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case "gzip":
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return &GzipSigil{}, nil
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case "json":
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return &JSONSigil{Indent: false}, nil
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case "json-indent":
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return &JSONSigil{Indent: true}, nil
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case "md4":
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return NewHashSigil(crypto.MD4), nil
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case "md5":
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return NewHashSigil(crypto.MD5), nil
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case "sha1":
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return NewHashSigil(crypto.SHA1), nil
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case "sha224":
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return NewHashSigil(crypto.SHA224), nil
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case "sha256":
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return NewHashSigil(crypto.SHA256), nil
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case "sha384":
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return NewHashSigil(crypto.SHA384), nil
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case "sha512":
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return NewHashSigil(crypto.SHA512), nil
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case "ripemd160":
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return NewHashSigil(crypto.RIPEMD160), nil
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case "sha3-224":
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return NewHashSigil(crypto.SHA3_224), nil
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case "sha3-256":
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return NewHashSigil(crypto.SHA3_256), nil
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case "sha3-384":
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return NewHashSigil(crypto.SHA3_384), nil
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case "sha3-512":
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return NewHashSigil(crypto.SHA3_512), nil
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case "sha512-224":
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return NewHashSigil(crypto.SHA512_224), nil
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case "sha512-256":
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return NewHashSigil(crypto.SHA512_256), nil
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case "blake2s-256":
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return NewHashSigil(crypto.BLAKE2s_256), nil
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case "blake2b-256":
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return NewHashSigil(crypto.BLAKE2b_256), nil
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case "blake2b-384":
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return NewHashSigil(crypto.BLAKE2b_384), nil
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case "blake2b-512":
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return NewHashSigil(crypto.BLAKE2b_512), nil
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default:
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return nil, errors.New("enchantrix: unknown sigil name")
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}
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}
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78
pkg/enchantrix/sigils_test.go
Normal file
78
pkg/enchantrix/sigils_test.go
Normal file
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@ -0,0 +1,78 @@
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package enchantrix_test
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import (
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"crypto"
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"encoding/hex"
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"testing"
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"github.com/Snider/Enchantrix/pkg/enchantrix"
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"github.com/stretchr/testify/assert"
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)
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func TestReverseSigil(t *testing.T) {
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s := &enchantrix.ReverseSigil{}
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data := []byte("hello")
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reversed, err := s.In(data)
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assert.NoError(t, err)
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assert.Equal(t, "olleh", string(reversed))
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original, err := s.Out(reversed)
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assert.NoError(t, err)
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assert.Equal(t, "hello", string(original))
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}
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func TestHexSigil(t *testing.T) {
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s := &enchantrix.HexSigil{}
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data := []byte("hello")
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encoded, err := s.In(data)
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assert.NoError(t, err)
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assert.Equal(t, "68656c6c6f", string(encoded))
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decoded, err := s.Out(encoded)
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assert.NoError(t, err)
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assert.Equal(t, "hello", string(decoded))
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}
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func TestBase64Sigil(t *testing.T) {
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s := &enchantrix.Base64Sigil{}
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data := []byte("hello")
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encoded, err := s.In(data)
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assert.NoError(t, err)
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assert.Equal(t, "aGVsbG8=", string(encoded))
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decoded, err := s.Out(encoded)
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assert.NoError(t, err)
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assert.Equal(t, "hello", string(decoded))
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}
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func TestGzipSigil(t *testing.T) {
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s := &enchantrix.GzipSigil{}
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data := []byte("hello")
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compressed, err := s.In(data)
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assert.NoError(t, err)
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assert.NotEqual(t, data, compressed)
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decompressed, err := s.Out(compressed)
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assert.NoError(t, err)
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assert.Equal(t, "hello", string(decompressed))
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}
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func TestJSONSigil(t *testing.T) {
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s := &enchantrix.JSONSigil{Indent: true}
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data := []byte(`{"hello":"world"}`)
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indented, err := s.In(data)
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assert.NoError(t, err)
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assert.Equal(t, "{\n \"hello\": \"world\"\n}", string(indented))
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s.Indent = false
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compacted, err := s.In(indented)
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assert.NoError(t, err)
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assert.Equal(t, `{"hello":"world"}`, string(compacted))
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}
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func TestHashSigil(t *testing.T) {
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s := enchantrix.NewHashSigil(crypto.SHA256)
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data := []byte("hello")
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hashed, err := s.In(data)
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assert.NoError(t, err)
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expectedHash := "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824"
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assert.Equal(t, expectedHash, hex.EncodeToString(hashed))
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unhashed, err := s.Out(hashed)
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assert.NoError(t, err)
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assert.Equal(t, hashed, unhashed)
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}
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|
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@ -7,7 +7,9 @@ import (
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"errors"
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"fmt"
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"io"
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"github.com/Snider/Enchantrix/pkg/crypt"
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"github.com/Snider/Enchantrix/pkg/enchantrix"
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)
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||||
const (
|
||||
|
|
@ -22,19 +24,13 @@ var (
|
|||
ErrChecksumMismatch = errors.New("trix: checksum mismatch")
|
||||
)
|
||||
|
||||
// Sigil defines the interface for a data transformer.
|
||||
type Sigil interface {
|
||||
In(data []byte) ([]byte, error)
|
||||
Out(data []byte) ([]byte, error)
|
||||
}
|
||||
|
||||
// Trix represents the structure of a .trix file.
|
||||
type Trix struct {
|
||||
Header map[string]interface{}
|
||||
Payload []byte
|
||||
InSigils []Sigil `json:"-"` // Ignore Sigils during JSON marshaling
|
||||
OutSigils []Sigil `json:"-"` // Ignore Sigils during JSON marshaling
|
||||
ChecksumAlgo crypt.HashType `json:"-"`
|
||||
Header map[string]interface{}
|
||||
Payload []byte
|
||||
InSigils []string `json:"-"` // Ignore Sigils during JSON marshaling
|
||||
OutSigils []string `json:"-"` // Ignore Sigils during JSON marshaling
|
||||
ChecksumAlgo crypt.HashType `json:"-"`
|
||||
}
|
||||
|
||||
// Encode serializes a Trix struct into the .trix binary format.
|
||||
|
|
@ -155,11 +151,14 @@ func Decode(data []byte, magicNumber string) (*Trix, error) {
|
|||
|
||||
// Pack applies the In method of all attached sigils to the payload.
|
||||
func (t *Trix) Pack() error {
|
||||
for _, sigil := range t.InSigils {
|
||||
for _, sigilName := range t.InSigils {
|
||||
sigil, err := enchantrix.NewSigil(sigilName)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if sigil == nil {
|
||||
return ErrNilSigil
|
||||
}
|
||||
var err error
|
||||
t.Payload, err = sigil.In(t.Payload)
|
||||
if err != nil {
|
||||
return err
|
||||
|
|
@ -170,16 +169,19 @@ func (t *Trix) Pack() error {
|
|||
|
||||
// Unpack applies the Out method of all sigils in reverse order.
|
||||
func (t *Trix) Unpack() error {
|
||||
sigils := t.OutSigils
|
||||
if len(sigils) == 0 {
|
||||
sigils = t.InSigils
|
||||
sigilNames := t.OutSigils
|
||||
if len(sigilNames) == 0 {
|
||||
sigilNames = t.InSigils
|
||||
}
|
||||
for i := len(sigils) - 1; i >= 0; i-- {
|
||||
sigil := sigils[i]
|
||||
for i := len(sigilNames) - 1; i >= 0; i-- {
|
||||
sigilName := sigilNames[i]
|
||||
sigil, err := enchantrix.NewSigil(sigilName)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if sigil == nil {
|
||||
return ErrNilSigil
|
||||
}
|
||||
var err error
|
||||
t.Payload, err = sigil.Out(t.Payload)
|
||||
if err != nil {
|
||||
return err
|
||||
|
|
@ -187,21 +189,3 @@ func (t *Trix) Unpack() error {
|
|||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// ReverseSigil is an example Sigil that reverses the bytes of the payload.
|
||||
type ReverseSigil struct{}
|
||||
|
||||
// In reverses the bytes of the data.
|
||||
func (s *ReverseSigil) In(data []byte) ([]byte, error) {
|
||||
reversed := make([]byte, len(data))
|
||||
for i, j := 0, len(data)-1; i < len(data); i, j = i+1, j-1 {
|
||||
reversed[i] = data[j]
|
||||
}
|
||||
return reversed, nil
|
||||
}
|
||||
|
||||
// Out reverses the bytes of the data.
|
||||
func (s *ReverseSigil) Out(data []byte) ([]byte, error) {
|
||||
// Reversing the bytes again restores the original data.
|
||||
return s.In(data)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,10 +1,10 @@
|
|||
package trix
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"io"
|
||||
"reflect"
|
||||
"testing"
|
||||
|
||||
"github.com/Snider/Enchantrix/pkg/crypt"
|
||||
"github.com/stretchr/testify/assert"
|
||||
)
|
||||
|
|
@ -115,24 +115,12 @@ func TestTrixEncodeDecode_Ugly(t *testing.T) {
|
|||
|
||||
// --- Sigil Tests ---
|
||||
|
||||
// FailingSigil is a helper for testing sigils that intentionally fail.
|
||||
type FailingSigil struct {
|
||||
err error
|
||||
}
|
||||
|
||||
func (s *FailingSigil) In(data []byte) ([]byte, error) {
|
||||
return nil, s.err
|
||||
}
|
||||
func (s *FailingSigil) Out(data []byte) ([]byte, error) {
|
||||
return nil, s.err
|
||||
}
|
||||
|
||||
func TestPackUnpack_Good(t *testing.T) {
|
||||
originalPayload := []byte("hello world")
|
||||
trix := &Trix{
|
||||
Header: map[string]interface{}{},
|
||||
Payload: originalPayload,
|
||||
InSigils: []Sigil{&ReverseSigil{}, &ReverseSigil{}}, // Double reverse should be original
|
||||
Header: map[string]interface{}{},
|
||||
Payload: originalPayload,
|
||||
InSigils: []string{"reverse", "reverse"}, // Double reverse should be original
|
||||
}
|
||||
|
||||
err := trix.Pack()
|
||||
|
|
@ -145,30 +133,15 @@ func TestPackUnpack_Good(t *testing.T) {
|
|||
}
|
||||
|
||||
func TestPackUnpack_Bad(t *testing.T) {
|
||||
expectedErr := errors.New("sigil failed")
|
||||
trix := &Trix{
|
||||
Header: map[string]interface{}{},
|
||||
Payload: []byte("some data"),
|
||||
InSigils: []Sigil{&ReverseSigil{}, &FailingSigil{err: expectedErr}},
|
||||
Header: map[string]interface{}{},
|
||||
Payload: []byte("some data"),
|
||||
InSigils: []string{"reverse", "invalid-sigil-name"},
|
||||
}
|
||||
|
||||
err := trix.Pack()
|
||||
assert.Error(t, err)
|
||||
assert.Equal(t, expectedErr, err)
|
||||
}
|
||||
|
||||
func TestPackUnpack_Ugly(t *testing.T) {
|
||||
t.Run("NilSigil", func(t *testing.T) {
|
||||
trix := &Trix{
|
||||
Header: map[string]interface{}{},
|
||||
Payload: []byte("some data"),
|
||||
InSigils: []Sigil{nil},
|
||||
}
|
||||
|
||||
err := trix.Pack()
|
||||
assert.Error(t, err)
|
||||
assert.Equal(t, ErrNilSigil, err)
|
||||
})
|
||||
assert.Contains(t, err.Error(), "unknown sigil name")
|
||||
}
|
||||
|
||||
// --- Checksum Tests ---
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue