53 lines
1.1 KiB
Go
53 lines
1.1 KiB
Go
package shared
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import (
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"bytes"
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"strings"
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"github.com/shengdoushi/base58"
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"github.com/tech/sendico/pkg/merrors"
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)
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func TronBase58ToHex(addr string) (string, error) {
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const (
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tronAddrLen = 25
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tronPrefix = byte(0x41)
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)
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raw, err := base58.Decode(strings.TrimSpace(addr), base58.BitcoinAlphabet)
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if err != nil {
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return "", merrors.InvalidArgument(
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fmt.Sprintf("tron address: base58 decode failed: %s", err.Error()),
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)
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}
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if len(raw) != tronAddrLen {
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return "", merrors.DataConflict(
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fmt.Sprintf("tron address: invalid length %d", len(raw)),
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)
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}
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// 21 байт: prefix + 20 байт EVM
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payload := raw[:21]
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checksum := raw[21:]
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if payload[0] != tronPrefix {
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return "", merrors.DataConflict("tron address: invalid prefix")
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}
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// validate checksum (double sha256)
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h1 := sha256.Sum256(payload)
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h2 := sha256.Sum256(h1[:])
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expectedChecksum := h2[:4]
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if !bytes.Equal(expectedChecksum, checksum) {
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return "", merrors.DataConflict("tron address: invalid checksum")
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}
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evm := payload[1:]
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return "0x" + hex.EncodeToString(evm), nil
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}
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