diff --git a/_pkg.dev/crypto/base58/base58.go b/_pkg.dev/crypto/base58/base58.go deleted file mode 100755 index 5d57dc8c4..000000000 --- a/_pkg.dev/crypto/base58/base58.go +++ /dev/null @@ -1,126 +0,0 @@ -package base58 - -import ( - "bytes" - "fmt" - "math/big" - - "github.com/CityOfZion/neo-go/pkg/crypto/hash" -) - -const prefix rune = '1' - -var decodeMap = map[rune]int64{ - '1': 0, '2': 1, '3': 2, '4': 3, '5': 4, - '6': 5, '7': 6, '8': 7, '9': 8, 'A': 9, - 'B': 10, 'C': 11, 'D': 12, 'E': 13, 'F': 14, - 'G': 15, 'H': 16, 'J': 17, 'K': 18, 'L': 19, - 'M': 20, 'N': 21, 'P': 22, 'Q': 23, 'R': 24, - 'S': 25, 'T': 26, 'U': 27, 'V': 28, 'W': 29, - 'X': 30, 'Y': 31, 'Z': 32, 'a': 33, 'b': 34, - 'c': 35, 'd': 36, 'e': 37, 'f': 38, 'g': 39, - 'h': 40, 'i': 41, 'j': 42, 'k': 43, 'm': 44, - 'n': 45, 'o': 46, 'p': 47, 'q': 48, 'r': 49, - 's': 50, 't': 51, 'u': 52, 'v': 53, 'w': 54, - 'x': 55, 'y': 56, 'z': 57, -} - -// Decode decodes the base58 encoded string. -func Decode(s string) ([]byte, error) { - var ( - startIndex = 0 - zero = 0 - ) - for i, c := range s { - if c == prefix { - zero++ - } else { - startIndex = i - break - } - } - - var ( - n = big.NewInt(0) - div = big.NewInt(58) - ) - for _, c := range s[startIndex:] { - charIndex, ok := decodeMap[c] - if !ok { - return nil, fmt.Errorf( - "invalid character '%c' when decoding this base58 string: '%s'", c, s, - ) - } - n.Add(n.Mul(n, div), big.NewInt(charIndex)) - } - - out := n.Bytes() - buf := make([]byte, (zero + len(out))) - copy(buf[zero:], out[:]) - - return buf, nil -} - -// Encode encodes a byte slice to be a base58 encoded string. -func Encode(bytes []byte) string { - var ( - lookupTable = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz" - x = new(big.Int).SetBytes(bytes) - r = new(big.Int) - m = big.NewInt(58) - zero = big.NewInt(0) - encoded string - ) - - for x.Cmp(zero) > 0 { - x.QuoRem(x, m, r) - encoded = string(lookupTable[r.Int64()]) + encoded - } - - return encoded -} - -// CheckDecode decodes the given string. -func CheckDecode(s string) (b []byte, err error) { - b, err = Decode(s) - if err != nil { - return nil, err - } - - for i := 0; i < len(s); i++ { - if s[i] != '1' { - break - } - b = append([]byte{0x00}, b...) - } - - if len(b) < 5 { - return nil, fmt.Errorf("Invalid base-58 check string: missing checksum") - } - - hash, err := hash.DoubleSha256(b[:len(b)-4]) - - if err != nil { - return nil, fmt.Errorf("Could not double sha256 data") - } - - if bytes.Compare(hash[0:4], b[len(b)-4:]) != 0 { - return nil, fmt.Errorf("Invalid base-58 check string: invalid checksum") - } - - // Strip the 4 byte long hash. - b = b[:len(b)-4] - - return b, nil -} - -// CheckEncode encodes b into a base-58 check encoded string. -func CheckEncode(b []byte) (string, error) { - hash, err := hash.DoubleSha256(b) - if err != nil { - return "", fmt.Errorf("Could not double sha256 data") - } - b = append(b, hash[0:4]...) - - return Encode(b), nil -} diff --git a/_pkg.dev/crypto/base58/base58_test.go b/pkg/crypto/base58_test.go similarity index 77% rename from _pkg.dev/crypto/base58/base58_test.go rename to pkg/crypto/base58_test.go index 524f0e55e..7bf48cf70 100755 --- a/_pkg.dev/crypto/base58/base58_test.go +++ b/pkg/crypto/base58_test.go @@ -1,4 +1,4 @@ -package base58 +package crypto import ( "encoding/hex" @@ -7,10 +7,10 @@ import ( "github.com/stretchr/testify/assert" ) -func TestDecode(t *testing.T) { +func TestBase58Decode(t *testing.T) { input := "1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX" - data, err := Decode(input) + data, err := Base58Decode(input) if err != nil { t.Fatal(err) } @@ -19,12 +19,12 @@ func TestDecode(t *testing.T) { actual := hex.EncodeToString(data) assert.Equal(t, expected, actual) } -func TestEncode(t *testing.T) { +func TestBase58Encode(t *testing.T) { input := "0099bc78ba577a95a11f1a344d4d2ae55f2f857b989ea5e5e2" inputBytes, _ := hex.DecodeString(input) - data := Encode(inputBytes) + data := Base58Encode(inputBytes) expected := "F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX" // Removed the 1 as it is not checkEncoding actual := data