Add NewMnemonicFromEntropy

go.mod

@@ -15,7 +15,6 @@ require (
 	github.com/huin/goupnp v1.0.0 // indirect
 	github.com/jackpal/go-nat-pmp v1.0.1 // indirect
 	github.com/karalabe/hid v1.0.0 // indirect
-	github.com/miguelmota/go-ethereum-hdwallet v0.0.0-20190720004541-5f6b3168e4a0
 	github.com/pborman/uuid v1.2.0 // indirect
 	github.com/pkg/errors v0.8.1 // indirect
 	github.com/rjeczalik/notify v0.9.2 // indirect

go.sum

@@ -119,6 +119,7 @@ github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
 github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/profile v1.2.1/go.mod h1:hJw3o1OdXxsrSjjVksARp5W95eeEaEfptyVZyv6JUPA=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
@@ -144,6 +145,7 @@ github.com/steakknife/hamming v0.0.0-20180906055917-c99c65617cd3/go.mod h1:hpGUW
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/syndtr/goleveldb v0.0.0-20180621010148-0d5a0ceb10cf h1:QDa82vuIQYktiygoQ49yLjSwCsHFxcDWsWsENaIm33I=
 github.com/syndtr/goleveldb v0.0.0-20180621010148-0d5a0ceb10cf/go.mod h1:Z4AUp2Km+PwemOoO/VB5AOx9XSsIItzFjoJlOSiYmn0=
@@ -204,6 +206,7 @@ google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoA
 google.golang.org/grpc v1.23.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/bsm/ratelimit.v1 v1.0.0-20160220154919-db14e161995a/go.mod h1:KF9sEfUPAXdG8Oev9e99iLGnl2uJMjc5B+4y3O7x610=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/fatih/set.v0 v0.2.1 h1:Xvyyp7LXu34P0ROhCyfXkmQCAoOUKb1E2JS9I7SE5CY=
 gopkg.in/fatih/set.v0 v0.2.1/go.mod h1:5eLWEndGL4zGGemXWrKuts+wTJR0y+w+auqUJZbmyBg=

hdwallet.go

@@ -460,6 +460,16 @@ func NewMnemonic(bits int) (string, error) {
 	return bip39.NewMnemonic(entropy)
 }
 
+// NewMnemonicFromEntropy returns a BIP-39 mnemonic from entropy.
+func NewMnemonicFromEntropy(entropy []byte) (string, error) {
+	return bip39.NewMnemonic(entropy)
+}
+
+// NewEntropy returns a randomly generated entropy.
+func NewEntropy(bits int) ([]byte, error) {
+	return bip39.NewEntropy(bits)
+}
+
 // NewSeed returns a randomly generated BIP-39 seed.
 func NewSeed() ([]byte, error) {
 	b := make([]byte, 64)

hdwallet_test.go

@@ -270,4 +270,18 @@ func TestWallet(t *testing.T) {
 	if len(words) != 12 {
 		t.Error("expected 12 words")
 	}
+
+	entropy, err := NewEntropy(128)
+	if err != nil {
+		t.Error(err)
+	}
+
+	mnemonic, err = NewMnemonicFromEntropy(entropy)
+	if err != nil {
+		t.Error(err)
+	}
+
+	if len(words) != 12 {
+		t.Error("expected 12 words")
+	}
 }