Merge pull request #222 from tendermint/dev/bech32_err_msg

Bech32: Wrap error messages

bech32/bech32.go

@@ -2,13 +2,14 @@ package bech32
 
 import (
 	"github.com/btcsuite/btcutil/bech32"
+	"github.com/pkg/errors"
 )
 
 //ConvertAndEncode converts from a base64 encoded byte string to base32 encoded byte string and then to bech32
 func ConvertAndEncode(hrp string, data []byte) (string, error) {
 	converted, err := bech32.ConvertBits(data, 8, 5, true)
 	if err != nil {
-		return "", err
+		return "", errors.Wrap(err, "encoding bech32 failed")
 	}
 	return bech32.Encode(hrp, converted)
 
@@ -18,11 +19,11 @@ func ConvertAndEncode(hrp string, data []byte) (string, error) {
 func DecodeAndConvert(bech string) (string, []byte, error) {
 	hrp, data, err := bech32.Decode(bech)
 	if err != nil {
-		return "", nil, err
+		return "", nil, errors.Wrap(err, "decoding bech32 failed")
 	}
 	converted, err := bech32.ConvertBits(data, 5, 8, false)
 	if err != nil {
-		return "", nil, err
+		return "", nil, errors.Wrap(err, "decoding bech32 failed")
 	}
 	return hrp, converted, nil
 }