Merge pull request #9 from tendermint/develop

Develop
2025-05-28 13:41:21 +00:00 · 2017-04-13 18:50:47 -04:00 · 2017-04-13 18:50:47 -04:00 · 0ca2c6fdb0
commit 0ca2c6fdb0
parent 3f47cfac5f 750b25c47a
12 changed files with 1600 additions and 22 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,2 @@
+*.swp
+*.swo
--- a/README.md
+++ b/README.md
@ -0,0 +1,837 @@
+
+
+# crypto
+`import "github.com/tendermint/go-crypto"`
+
+* [Overview](#pkg-overview)
+* [Index](#pkg-index)
+* [Subdirectories](#pkg-subdirectories)
+
+## <a name="pkg-overview">Overview</a>
+
+
+
+## <a name="pkg-index">Index</a>
+* [Constants](#pkg-constants)
+* [func CRandBytes(numBytes int) []byte](#CRandBytes)
+* [func CRandHex(numDigits int) string](#CRandHex)
+* [func CReader() io.Reader](#CReader)
+* [func DecodeArmor(armorStr string) (blockType string, headers map[string]string, data []byte, err error)](#DecodeArmor)
+* [func DecryptSymmetric(ciphertext []byte, secret []byte) (plaintext []byte, err error)](#DecryptSymmetric)
+* [func EncodeArmor(blockType string, headers map[string]string, data []byte) string](#EncodeArmor)
+* [func EncryptSymmetric(plaintext []byte, secret []byte) (ciphertext []byte)](#EncryptSymmetric)
+* [func MixEntropy(seedBytes []byte)](#MixEntropy)
+* [func Ripemd160(bytes []byte) []byte](#Ripemd160)
+* [func Sha256(bytes []byte) []byte](#Sha256)
+* [type PrivKey](#PrivKey)
+  * [func PrivKeyFromBytes(privKeyBytes []byte) (privKey PrivKey, err error)](#PrivKeyFromBytes)
+* [type PrivKeyEd25519](#PrivKeyEd25519)
+  * [func GenPrivKeyEd25519() PrivKeyEd25519](#GenPrivKeyEd25519)
+  * [func GenPrivKeyEd25519FromSecret(secret []byte) PrivKeyEd25519](#GenPrivKeyEd25519FromSecret)
+  * [func (privKey PrivKeyEd25519) Bytes() []byte](#PrivKeyEd25519.Bytes)
+  * [func (privKey PrivKeyEd25519) Equals(other PrivKey) bool](#PrivKeyEd25519.Equals)
+  * [func (privKey PrivKeyEd25519) Generate(index int) PrivKeyEd25519](#PrivKeyEd25519.Generate)
+  * [func (p PrivKeyEd25519) MarshalJSON() ([]byte, error)](#PrivKeyEd25519.MarshalJSON)
+  * [func (privKey PrivKeyEd25519) PubKey() PubKey](#PrivKeyEd25519.PubKey)
+  * [func (privKey PrivKeyEd25519) Sign(msg []byte) Signature](#PrivKeyEd25519.Sign)
+  * [func (privKey PrivKeyEd25519) String() string](#PrivKeyEd25519.String)
+  * [func (privKey PrivKeyEd25519) ToCurve25519() *[32]byte](#PrivKeyEd25519.ToCurve25519)
+  * [func (p *PrivKeyEd25519) UnmarshalJSON(enc []byte) error](#PrivKeyEd25519.UnmarshalJSON)
+* [type PrivKeyS](#PrivKeyS)
+  * [func (p PrivKeyS) Empty() bool](#PrivKeyS.Empty)
+  * [func (p PrivKeyS) MarshalJSON() ([]byte, error)](#PrivKeyS.MarshalJSON)
+  * [func (p *PrivKeyS) UnmarshalJSON(data []byte) (err error)](#PrivKeyS.UnmarshalJSON)
+* [type PrivKeySecp256k1](#PrivKeySecp256k1)
+  * [func GenPrivKeySecp256k1() PrivKeySecp256k1](#GenPrivKeySecp256k1)
+  * [func GenPrivKeySecp256k1FromSecret(secret []byte) PrivKeySecp256k1](#GenPrivKeySecp256k1FromSecret)
+  * [func (privKey PrivKeySecp256k1) Bytes() []byte](#PrivKeySecp256k1.Bytes)
+  * [func (privKey PrivKeySecp256k1) Equals(other PrivKey) bool](#PrivKeySecp256k1.Equals)
+  * [func (p PrivKeySecp256k1) MarshalJSON() ([]byte, error)](#PrivKeySecp256k1.MarshalJSON)
+  * [func (privKey PrivKeySecp256k1) PubKey() PubKey](#PrivKeySecp256k1.PubKey)
+  * [func (privKey PrivKeySecp256k1) Sign(msg []byte) Signature](#PrivKeySecp256k1.Sign)
+  * [func (privKey PrivKeySecp256k1) String() string](#PrivKeySecp256k1.String)
+  * [func (p *PrivKeySecp256k1) UnmarshalJSON(enc []byte) error](#PrivKeySecp256k1.UnmarshalJSON)
+* [type PubKey](#PubKey)
+  * [func PubKeyFromBytes(pubKeyBytes []byte) (pubKey PubKey, err error)](#PubKeyFromBytes)
+* [type PubKeyEd25519](#PubKeyEd25519)
+  * [func (pubKey PubKeyEd25519) Address() []byte](#PubKeyEd25519.Address)
+  * [func (pubKey PubKeyEd25519) Bytes() []byte](#PubKeyEd25519.Bytes)
+  * [func (pubKey PubKeyEd25519) Equals(other PubKey) bool](#PubKeyEd25519.Equals)
+  * [func (pubKey PubKeyEd25519) KeyString() string](#PubKeyEd25519.KeyString)
+  * [func (p PubKeyEd25519) MarshalJSON() ([]byte, error)](#PubKeyEd25519.MarshalJSON)
+  * [func (pubKey PubKeyEd25519) String() string](#PubKeyEd25519.String)
+  * [func (pubKey PubKeyEd25519) ToCurve25519() *[32]byte](#PubKeyEd25519.ToCurve25519)
+  * [func (p *PubKeyEd25519) UnmarshalJSON(enc []byte) error](#PubKeyEd25519.UnmarshalJSON)
+  * [func (pubKey PubKeyEd25519) VerifyBytes(msg []byte, sig_ Signature) bool](#PubKeyEd25519.VerifyBytes)
+* [type PubKeyS](#PubKeyS)
+  * [func (p PubKeyS) Empty() bool](#PubKeyS.Empty)
+  * [func (p PubKeyS) MarshalJSON() ([]byte, error)](#PubKeyS.MarshalJSON)
+  * [func (p *PubKeyS) UnmarshalJSON(data []byte) (err error)](#PubKeyS.UnmarshalJSON)
+* [type PubKeySecp256k1](#PubKeySecp256k1)
+  * [func (pubKey PubKeySecp256k1) Address() []byte](#PubKeySecp256k1.Address)
+  * [func (pubKey PubKeySecp256k1) Bytes() []byte](#PubKeySecp256k1.Bytes)
+  * [func (pubKey PubKeySecp256k1) Equals(other PubKey) bool](#PubKeySecp256k1.Equals)
+  * [func (pubKey PubKeySecp256k1) KeyString() string](#PubKeySecp256k1.KeyString)
+  * [func (p PubKeySecp256k1) MarshalJSON() ([]byte, error)](#PubKeySecp256k1.MarshalJSON)
+  * [func (pubKey PubKeySecp256k1) String() string](#PubKeySecp256k1.String)
+  * [func (p *PubKeySecp256k1) UnmarshalJSON(enc []byte) error](#PubKeySecp256k1.UnmarshalJSON)
+  * [func (pubKey PubKeySecp256k1) VerifyBytes(msg []byte, sig_ Signature) bool](#PubKeySecp256k1.VerifyBytes)
+* [type Signature](#Signature)
+  * [func SignatureFromBytes(sigBytes []byte) (sig Signature, err error)](#SignatureFromBytes)
+* [type SignatureEd25519](#SignatureEd25519)
+  * [func (sig SignatureEd25519) Bytes() []byte](#SignatureEd25519.Bytes)
+  * [func (sig SignatureEd25519) Equals(other Signature) bool](#SignatureEd25519.Equals)
+  * [func (sig SignatureEd25519) IsZero() bool](#SignatureEd25519.IsZero)
+  * [func (p SignatureEd25519) MarshalJSON() ([]byte, error)](#SignatureEd25519.MarshalJSON)
+  * [func (sig SignatureEd25519) String() string](#SignatureEd25519.String)
+  * [func (p *SignatureEd25519) UnmarshalJSON(enc []byte) error](#SignatureEd25519.UnmarshalJSON)
+* [type SignatureS](#SignatureS)
+  * [func (p SignatureS) Empty() bool](#SignatureS.Empty)
+  * [func (p SignatureS) MarshalJSON() ([]byte, error)](#SignatureS.MarshalJSON)
+  * [func (p *SignatureS) UnmarshalJSON(data []byte) (err error)](#SignatureS.UnmarshalJSON)
+* [type SignatureSecp256k1](#SignatureSecp256k1)
+  * [func (sig SignatureSecp256k1) Bytes() []byte](#SignatureSecp256k1.Bytes)
+  * [func (sig SignatureSecp256k1) Equals(other Signature) bool](#SignatureSecp256k1.Equals)
+  * [func (sig SignatureSecp256k1) IsZero() bool](#SignatureSecp256k1.IsZero)
+  * [func (p SignatureSecp256k1) MarshalJSON() ([]byte, error)](#SignatureSecp256k1.MarshalJSON)
+  * [func (sig SignatureSecp256k1) String() string](#SignatureSecp256k1.String)
+  * [func (p *SignatureSecp256k1) UnmarshalJSON(enc []byte) error](#SignatureSecp256k1.UnmarshalJSON)
+
+
+#### <a name="pkg-files">Package files</a>
+[armor.go](/src/github.com/tendermint/go-crypto/armor.go) [hash.go](/src/github.com/tendermint/go-crypto/hash.go) [priv_key.go](/src/github.com/tendermint/go-crypto/priv_key.go) [pub_key.go](/src/github.com/tendermint/go-crypto/pub_key.go) [random.go](/src/github.com/tendermint/go-crypto/random.go) [signature.go](/src/github.com/tendermint/go-crypto/signature.go) [symmetric.go](/src/github.com/tendermint/go-crypto/symmetric.go) 
+
+
+## <a name="pkg-constants">Constants</a>
+``` go
+const (
+    TypeEd25519   = byte(0x01)
+    TypeSecp256k1 = byte(0x02)
+    NameEd25519   = "ed25519"
+    NameSecp256k1 = "secp256k1"
+)
+```
+Types of implementations
+
+
+
+
+## <a name="CRandBytes">func</a> [CRandBytes](/src/target/random.go?s=698:734#L28)
+``` go
+func CRandBytes(numBytes int) []byte
+```
+This uses the OS and the Seed(s).
+
+
+
+## <a name="CRandHex">func</a> [CRandHex](/src/target/random.go?s=924:959#L38)
+``` go
+func CRandHex(numDigits int) string
+```
+RandHex(24) gives 96 bits of randomness, strong enough for most purposes.
+
+
+
+## <a name="CReader">func</a> [CReader](/src/target/random.go?s=1078:1102#L43)
+``` go
+func CReader() io.Reader
+```
+Returns a crand.Reader mixed with user-supplied entropy
+
+
+
+## <a name="DecodeArmor">func</a> [DecodeArmor](/src/target/armor.go?s=596:699#L18)
+``` go
+func DecodeArmor(armorStr string) (blockType string, headers map[string]string, data []byte, err error)
+```
+
+
+## <a name="DecryptSymmetric">func</a> [DecryptSymmetric](/src/target/symmetric.go?s=1048:1133#L23)
+``` go
+func DecryptSymmetric(ciphertext []byte, secret []byte) (plaintext []byte, err error)
+```
+secret must be 32 bytes long. Use something like Sha256(Bcrypt(passphrase))
+The ciphertext is (secretbox.Overhead + 24) bytes longer than the plaintext.
+
+
+
+## <a name="EncodeArmor">func</a> [EncodeArmor](/src/target/armor.go?s=125:206#L1)
+``` go
+func EncodeArmor(blockType string, headers map[string]string, data []byte) string
+```
+
+
+## <a name="EncryptSymmetric">func</a> [EncryptSymmetric](/src/target/symmetric.go?s=356:430#L6)
+``` go
+func EncryptSymmetric(plaintext []byte, secret []byte) (ciphertext []byte)
+```
+secret must be 32 bytes long. Use something like Sha256(Bcrypt(passphrase))
+The ciphertext is (secretbox.Overhead + 24) bytes longer than the plaintext.
+NOTE: call crypto.MixEntropy() first.
+
+
+
+## <a name="MixEntropy">func</a> [MixEntropy](/src/target/random.go?s=407:440#L13)
+``` go
+func MixEntropy(seedBytes []byte)
+```
+Mix additional bytes of randomness, e.g. from hardware, user-input, etc.
+It is OK to call it multiple times.  It does not diminish security.
+
+
+
+## <a name="Ripemd160">func</a> [Ripemd160](/src/target/hash.go?s=185:220#L4)
+``` go
+func Ripemd160(bytes []byte) []byte
+```
+
+
+## <a name="Sha256">func</a> [Sha256](/src/target/hash.go?s=78:110#L1)
+``` go
+func Sha256(bytes []byte) []byte
+```
+
+
+
+## <a name="PrivKey">type</a> [PrivKey](/src/target/priv_key.go?s=326:435#L5)
+``` go
+type PrivKey interface {
+    Bytes() []byte
+    Sign(msg []byte) Signature
+    PubKey() PubKey
+    Equals(PrivKey) bool
+}
+```
+PrivKey is part of PrivAccount and state.PrivValidator.
+
+
+
+
+
+
+
+### <a name="PrivKeyFromBytes">func</a> [PrivKeyFromBytes](/src/target/priv_key.go?s=1302:1373#L50)
+``` go
+func PrivKeyFromBytes(privKeyBytes []byte) (privKey PrivKey, err error)
+```
+
+
+
+
+## <a name="PrivKeyEd25519">type</a> [PrivKeyEd25519](/src/target/priv_key.go?s=1502:1530#L58)
+``` go
+type PrivKeyEd25519 [64]byte
+```
+Implements PrivKey
+
+
+
+
+
+
+
+### <a name="GenPrivKeyEd25519">func</a> [GenPrivKeyEd25519](/src/target/priv_key.go?s=3003:3042#L116)
+``` go
+func GenPrivKeyEd25519() PrivKeyEd25519
+```
+
+### <a name="GenPrivKeyEd25519FromSecret">func</a> [GenPrivKeyEd25519FromSecret](/src/target/priv_key.go?s=3290:3352#L125)
+``` go
+func GenPrivKeyEd25519FromSecret(secret []byte) PrivKeyEd25519
+```
+NOTE: secret should be the output of a KDF like bcrypt,
+if it's derived from user input.
+
+
+
+
+
+### <a name="PrivKeyEd25519.Bytes">func</a> (PrivKeyEd25519) [Bytes](/src/target/priv_key.go?s=1532:1576#L60)
+``` go
+func (privKey PrivKeyEd25519) Bytes() []byte
+```
+
+
+
+### <a name="PrivKeyEd25519.Equals">func</a> (PrivKeyEd25519) [Equals](/src/target/priv_key.go?s=1973:2029#L75)
+``` go
+func (privKey PrivKeyEd25519) Equals(other PrivKey) bool
+```
+
+
+
+### <a name="PrivKeyEd25519.Generate">func</a> (PrivKeyEd25519) [Generate](/src/target/priv_key.go?s=2761:2825#L106)
+``` go
+func (privKey PrivKeyEd25519) Generate(index int) PrivKeyEd25519
+```
+Deterministically generates new priv-key bytes from key.
+
+
+
+
+### <a name="PrivKeyEd25519.MarshalJSON">func</a> (PrivKeyEd25519) [MarshalJSON](/src/target/priv_key.go?s=2156:2209#L83)
+``` go
+func (p PrivKeyEd25519) MarshalJSON() ([]byte, error)
+```
+
+
+
+### <a name="PrivKeyEd25519.PubKey">func</a> (PrivKeyEd25519) [PubKey](/src/target/priv_key.go?s=1826:1871#L70)
+``` go
+func (privKey PrivKeyEd25519) PubKey() PubKey
+```
+
+
+
+### <a name="PrivKeyEd25519.Sign">func</a> (PrivKeyEd25519) [Sign](/src/target/priv_key.go?s=1635:1691#L64)
+``` go
+func (privKey PrivKeyEd25519) Sign(msg []byte) Signature
+```
+
+
+
+### <a name="PrivKeyEd25519.String">func</a> (PrivKeyEd25519) [String](/src/target/priv_key.go?s=2613:2658#L101)
+``` go
+func (privKey PrivKeyEd25519) String() string
+```
+
+
+
+### <a name="PrivKeyEd25519.ToCurve25519">func</a> (PrivKeyEd25519) [ToCurve25519](/src/target/priv_key.go?s=2399:2453#L94)
+``` go
+func (privKey PrivKeyEd25519) ToCurve25519() *[32]byte
+```
+
+
+
+### <a name="PrivKeyEd25519.UnmarshalJSON">func</a> (\*PrivKeyEd25519) [UnmarshalJSON](/src/target/priv_key.go?s=2250:2306#L87)
+``` go
+func (p *PrivKeyEd25519) UnmarshalJSON(enc []byte) error
+```
+
+
+
+## <a name="PrivKeyS">type</a> [PrivKeyS](/src/target/priv_key.go?s=929:962#L30)
+``` go
+type PrivKeyS struct {
+    PrivKey
+}
+```
+PrivKeyS add json serialization to PrivKey
+
+
+
+
+
+
+
+
+
+
+### <a name="PrivKeyS.Empty">func</a> (PrivKeyS) [Empty](/src/target/priv_key.go?s=1241:1271#L46)
+``` go
+func (p PrivKeyS) Empty() bool
+```
+
+
+
+### <a name="PrivKeyS.MarshalJSON">func</a> (PrivKeyS) [MarshalJSON](/src/target/priv_key.go?s=964:1011#L34)
+``` go
+func (p PrivKeyS) MarshalJSON() ([]byte, error)
+```
+
+
+
+### <a name="PrivKeyS.UnmarshalJSON">func</a> (\*PrivKeyS) [UnmarshalJSON](/src/target/priv_key.go?s=1057:1114#L38)
+``` go
+func (p *PrivKeyS) UnmarshalJSON(data []byte) (err error)
+```
+
+
+
+## <a name="PrivKeySecp256k1">type</a> [PrivKeySecp256k1](/src/target/priv_key.go?s=3635:3665#L136)
+``` go
+type PrivKeySecp256k1 [32]byte
+```
+Implements PrivKey
+
+
+
+
+
+
+
+### <a name="GenPrivKeySecp256k1">func</a> [GenPrivKeySecp256k1](/src/target/priv_key.go?s=5071:5114#L194)
+``` go
+func GenPrivKeySecp256k1() PrivKeySecp256k1
+```
+
+### <a name="GenPrivKeySecp256k1FromSecret">func</a> [GenPrivKeySecp256k1FromSecret](/src/target/priv_key.go?s=5436:5502#L204)
+``` go
+func GenPrivKeySecp256k1FromSecret(secret []byte) PrivKeySecp256k1
+```
+NOTE: secret should be the output of a KDF like bcrypt,
+if it's derived from user input.
+
+
+
+
+
+### <a name="PrivKeySecp256k1.Bytes">func</a> (PrivKeySecp256k1) [Bytes](/src/target/priv_key.go?s=3667:3713#L138)
+``` go
+func (privKey PrivKeySecp256k1) Bytes() []byte
+```
+
+
+
+### <a name="PrivKeySecp256k1.Equals">func</a> (PrivKeySecp256k1) [Equals](/src/target/priv_key.go?s=4235:4293#L158)
+``` go
+func (privKey PrivKeySecp256k1) Equals(other PrivKey) bool
+```
+
+
+
+### <a name="PrivKeySecp256k1.MarshalJSON">func</a> (PrivKeySecp256k1) [MarshalJSON](/src/target/priv_key.go?s=4426:4481#L166)
+``` go
+func (p PrivKeySecp256k1) MarshalJSON() ([]byte, error)
+```
+
+
+
+### <a name="PrivKeySecp256k1.PubKey">func</a> (PrivKeySecp256k1) [PubKey](/src/target/priv_key.go?s=4032:4079#L151)
+``` go
+func (privKey PrivKeySecp256k1) PubKey() PubKey
+```
+
+
+
+### <a name="PrivKeySecp256k1.Sign">func</a> (PrivKeySecp256k1) [Sign](/src/target/priv_key.go?s=3772:3830#L142)
+``` go
+func (privKey PrivKeySecp256k1) Sign(msg []byte) Signature
+```
+
+
+
+### <a name="PrivKeySecp256k1.String">func</a> (PrivKeySecp256k1) [String](/src/target/priv_key.go?s=4673:4720#L177)
+``` go
+func (privKey PrivKeySecp256k1) String() string
+```
+
+
+
+### <a name="PrivKeySecp256k1.UnmarshalJSON">func</a> (\*PrivKeySecp256k1) [UnmarshalJSON](/src/target/priv_key.go?s=4522:4580#L170)
+``` go
+func (p *PrivKeySecp256k1) UnmarshalJSON(enc []byte) error
+```
+
+
+
+## <a name="PubKey">type</a> [PubKey](/src/target/pub_key.go?s=361:506#L7)
+``` go
+type PubKey interface {
+    Address() []byte
+    Bytes() []byte
+    KeyString() string
+    VerifyBytes(msg []byte, sig Signature) bool
+    Equals(PubKey) bool
+}
+```
+PubKey is part of Account and Validator.
+
+
+
+
+
+
+
+### <a name="PubKeyFromBytes">func</a> [PubKeyFromBytes](/src/target/pub_key.go?s=1203:1270#L45)
+``` go
+func PubKeyFromBytes(pubKeyBytes []byte) (pubKey PubKey, err error)
+```
+
+
+
+
+## <a name="PubKeyEd25519">type</a> [PubKeyEd25519](/src/target/pub_key.go?s=1396:1423#L53)
+``` go
+type PubKeyEd25519 [32]byte
+```
+Implements PubKey
+
+
+
+
+
+
+
+
+
+
+### <a name="PubKeyEd25519.Address">func</a> (PubKeyEd25519) [Address](/src/target/pub_key.go?s=1425:1469#L55)
+``` go
+func (pubKey PubKeyEd25519) Address() []byte
+```
+
+
+
+### <a name="PubKeyEd25519.Bytes">func</a> (PubKeyEd25519) [Bytes](/src/target/pub_key.go?s=1789:1831#L68)
+``` go
+func (pubKey PubKeyEd25519) Bytes() []byte
+```
+
+
+
+### <a name="PubKeyEd25519.Equals">func</a> (PubKeyEd25519) [Equals](/src/target/pub_key.go?s=3064:3117#L119)
+``` go
+func (pubKey PubKeyEd25519) Equals(other PubKey) bool
+```
+
+
+
+### <a name="PubKeyEd25519.KeyString">func</a> (PubKeyEd25519) [KeyString](/src/target/pub_key.go?s=2983:3029#L115)
+``` go
+func (pubKey PubKeyEd25519) KeyString() string
+```
+Must return the full bytes in hex.
+Used for map keying, etc.
+
+
+
+
+### <a name="PubKeyEd25519.MarshalJSON">func</a> (PubKeyEd25519) [MarshalJSON](/src/target/pub_key.go?s=2279:2331#L87)
+``` go
+func (p PubKeyEd25519) MarshalJSON() ([]byte, error)
+```
+
+
+
+### <a name="PubKeyEd25519.String">func</a> (PubKeyEd25519) [String](/src/target/pub_key.go?s=2823:2866#L109)
+``` go
+func (pubKey PubKeyEd25519) String() string
+```
+
+
+
+### <a name="PubKeyEd25519.ToCurve25519">func</a> (PubKeyEd25519) [ToCurve25519](/src/target/pub_key.go?s=2585:2637#L100)
+``` go
+func (pubKey PubKeyEd25519) ToCurve25519() *[32]byte
+```
+For use with golang/crypto/nacl/box
+If error, returns nil.
+
+
+
+
+### <a name="PubKeyEd25519.UnmarshalJSON">func</a> (\*PubKeyEd25519) [UnmarshalJSON](/src/target/pub_key.go?s=2372:2427#L91)
+``` go
+func (p *PubKeyEd25519) UnmarshalJSON(enc []byte) error
+```
+
+
+
+### <a name="PubKeyEd25519.VerifyBytes">func</a> (PubKeyEd25519) [VerifyBytes](/src/target/pub_key.go?s=1888:1960#L72)
+``` go
+func (pubKey PubKeyEd25519) VerifyBytes(msg []byte, sig_ Signature) bool
+```
+
+
+
+## <a name="PubKeyS">type</a> [PubKeyS](/src/target/pub_key.go?s=841:872#L25)
+``` go
+type PubKeyS struct {
+    PubKey
+}
+```
+PubKeyS add json serialization to PubKey
+
+
+
+
+
+
+
+
+
+
+### <a name="PubKeyS.Empty">func</a> (PubKeyS) [Empty](/src/target/pub_key.go?s=1144:1173#L41)
+``` go
+func (p PubKeyS) Empty() bool
+```
+
+
+
+### <a name="PubKeyS.MarshalJSON">func</a> (PubKeyS) [MarshalJSON](/src/target/pub_key.go?s=874:920#L29)
+``` go
+func (p PubKeyS) MarshalJSON() ([]byte, error)
+```
+
+
+
+### <a name="PubKeyS.UnmarshalJSON">func</a> (\*PubKeyS) [UnmarshalJSON](/src/target/pub_key.go?s=964:1020#L33)
+``` go
+func (p *PubKeyS) UnmarshalJSON(data []byte) (err error)
+```
+
+
+
+## <a name="PubKeySecp256k1">type</a> [PubKeySecp256k1](/src/target/pub_key.go?s=3401:3430#L132)
+``` go
+type PubKeySecp256k1 [33]byte
+```
+Implements PubKey.
+Compressed pubkey (just the x-cord),
+prefixed with 0x02 or 0x03, depending on the y-cord.
+
+
+
+
+
+
+
+
+
+
+### <a name="PubKeySecp256k1.Address">func</a> (PubKeySecp256k1) [Address](/src/target/pub_key.go?s=3497:3543#L135)
+``` go
+func (pubKey PubKeySecp256k1) Address() []byte
+```
+Implements Bitcoin style addresses: RIPEMD160(SHA256(pubkey))
+
+
+
+
+### <a name="PubKeySecp256k1.Bytes">func</a> (PubKeySecp256k1) [Bytes](/src/target/pub_key.go?s=3774:3818#L145)
+``` go
+func (pubKey PubKeySecp256k1) Bytes() []byte
+```
+
+
+
+### <a name="PubKeySecp256k1.Equals">func</a> (PubKeySecp256k1) [Equals](/src/target/pub_key.go?s=4897:4952#L192)
+``` go
+func (pubKey PubKeySecp256k1) Equals(other PubKey) bool
+```
+
+
+
+### <a name="PubKeySecp256k1.KeyString">func</a> (PubKeySecp256k1) [KeyString](/src/target/pub_key.go?s=4814:4862#L188)
+``` go
+func (pubKey PubKeySecp256k1) KeyString() string
+```
+Must return the full bytes in hex.
+Used for map keying, etc.
+
+
+
+
+### <a name="PubKeySecp256k1.MarshalJSON">func</a> (PubKeySecp256k1) [MarshalJSON](/src/target/pub_key.go?s=4405:4459#L171)
+``` go
+func (p PubKeySecp256k1) MarshalJSON() ([]byte, error)
+```
+
+
+
+### <a name="PubKeySecp256k1.String">func</a> (PubKeySecp256k1) [String](/src/target/pub_key.go?s=4650:4695#L182)
+``` go
+func (pubKey PubKeySecp256k1) String() string
+```
+
+
+
+### <a name="PubKeySecp256k1.UnmarshalJSON">func</a> (\*PubKeySecp256k1) [UnmarshalJSON](/src/target/pub_key.go?s=4500:4557#L175)
+``` go
+func (p *PubKeySecp256k1) UnmarshalJSON(enc []byte) error
+```
+
+
+
+### <a name="PubKeySecp256k1.VerifyBytes">func</a> (PubKeySecp256k1) [VerifyBytes](/src/target/pub_key.go?s=3875:3949#L149)
+``` go
+func (pubKey PubKeySecp256k1) VerifyBytes(msg []byte, sig_ Signature) bool
+```
+
+
+
+## <a name="Signature">type</a> [Signature](/src/target/signature.go?s=204:304#L3)
+``` go
+type Signature interface {
+    Bytes() []byte
+    IsZero() bool
+    String() string
+    Equals(Signature) bool
+}
+```
+Signature is a part of Txs and consensus Votes.
+
+
+
+
+
+
+
+### <a name="SignatureFromBytes">func</a> [SignatureFromBytes](/src/target/signature.go?s=1031:1098#L40)
+``` go
+func SignatureFromBytes(sigBytes []byte) (sig Signature, err error)
+```
+
+
+
+
+## <a name="SignatureEd25519">type</a> [SignatureEd25519](/src/target/signature.go?s=1221:1251#L48)
+``` go
+type SignatureEd25519 [64]byte
+```
+Implements Signature
+
+
+
+
+
+
+
+
+
+
+### <a name="SignatureEd25519.Bytes">func</a> (SignatureEd25519) [Bytes](/src/target/signature.go?s=1253:1295#L50)
+``` go
+func (sig SignatureEd25519) Bytes() []byte
+```
+
+
+
+### <a name="SignatureEd25519.Equals">func</a> (SignatureEd25519) [Equals](/src/target/signature.go?s=1520:1576#L58)
+``` go
+func (sig SignatureEd25519) Equals(other Signature) bool
+```
+
+
+
+### <a name="SignatureEd25519.IsZero">func</a> (SignatureEd25519) [IsZero](/src/target/signature.go?s=1352:1393#L54)
+``` go
+func (sig SignatureEd25519) IsZero() bool
+```
+
+
+
+### <a name="SignatureEd25519.MarshalJSON">func</a> (SignatureEd25519) [MarshalJSON](/src/target/signature.go?s=1701:1756#L66)
+``` go
+func (p SignatureEd25519) MarshalJSON() ([]byte, error)
+```
+
+
+
+### <a name="SignatureEd25519.String">func</a> (SignatureEd25519) [String](/src/target/signature.go?s=1420:1463#L56)
+``` go
+func (sig SignatureEd25519) String() string
+```
+
+
+
+### <a name="SignatureEd25519.UnmarshalJSON">func</a> (\*SignatureEd25519) [UnmarshalJSON](/src/target/signature.go?s=1797:1855#L70)
+``` go
+func (p *SignatureEd25519) UnmarshalJSON(enc []byte) error
+```
+
+
+
+## <a name="SignatureS">type</a> [SignatureS](/src/target/signature.go?s=648:685#L20)
+``` go
+type SignatureS struct {
+    Signature
+}
+```
+SignatureS add json serialization to Signature
+
+
+
+
+
+
+
+
+
+
+### <a name="SignatureS.Empty">func</a> (SignatureS) [Empty](/src/target/signature.go?s=966:998#L36)
+``` go
+func (p SignatureS) Empty() bool
+```
+
+
+
+### <a name="SignatureS.MarshalJSON">func</a> (SignatureS) [MarshalJSON](/src/target/signature.go?s=687:736#L24)
+``` go
+func (p SignatureS) MarshalJSON() ([]byte, error)
+```
+
+
+
+### <a name="SignatureS.UnmarshalJSON">func</a> (\*SignatureS) [UnmarshalJSON](/src/target/signature.go?s=780:839#L28)
+``` go
+func (p *SignatureS) UnmarshalJSON(data []byte) (err error)
+```
+
+
+
+## <a name="SignatureSecp256k1">type</a> [SignatureSecp256k1](/src/target/signature.go?s=2013:2043#L80)
+``` go
+type SignatureSecp256k1 []byte
+```
+Implements Signature
+
+
+
+
+
+
+
+
+
+
+### <a name="SignatureSecp256k1.Bytes">func</a> (SignatureSecp256k1) [Bytes](/src/target/signature.go?s=2045:2089#L82)
+``` go
+func (sig SignatureSecp256k1) Bytes() []byte
+```
+
+
+
+### <a name="SignatureSecp256k1.Equals">func</a> (SignatureSecp256k1) [Equals](/src/target/signature.go?s=2318:2376#L90)
+``` go
+func (sig SignatureSecp256k1) Equals(other Signature) bool
+```
+
+
+
+### <a name="SignatureSecp256k1.IsZero">func</a> (SignatureSecp256k1) [IsZero](/src/target/signature.go?s=2146:2189#L86)
+``` go
+func (sig SignatureSecp256k1) IsZero() bool
+```
+
+
+
+### <a name="SignatureSecp256k1.MarshalJSON">func</a> (SignatureSecp256k1) [MarshalJSON](/src/target/signature.go?s=2502:2559#L97)
+``` go
+func (p SignatureSecp256k1) MarshalJSON() ([]byte, error)
+```
+
+
+
+### <a name="SignatureSecp256k1.String">func</a> (SignatureSecp256k1) [String](/src/target/signature.go?s=2216:2261#L88)
+``` go
+func (sig SignatureSecp256k1) String() string
+```
+
+
+
+### <a name="SignatureSecp256k1.UnmarshalJSON">func</a> (\*SignatureSecp256k1) [UnmarshalJSON](/src/target/signature.go?s=2597:2657#L101)
+``` go
+func (p *SignatureSecp256k1) UnmarshalJSON(enc []byte) error
+```
+
+
+
+
+
+
+
+- - -
+Generated by [godoc2md](http://godoc.org/github.com/davecheney/godoc2md)
--- a/embed_test.go
+++ b/embed_test.go
@ -0,0 +1,126 @@
+package crypto_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	data "github.com/tendermint/go-data"
+)
+
+type Foo struct {
+	Name string
+}
+
+func (f Foo) Greet() string {
+	return "Foo: " + f.Name
+}
+
+type Bar struct {
+	Age int
+}
+
+func (b Bar) Greet() string {
+	return fmt.Sprintf("Bar #%d", b.Age)
+}
+
+type PubNameInner interface {
+	Greet() string
+}
+
+type privNameInner interface {
+	Greet() string
+}
+
+type Greeter interface {
+	Greet() string
+}
+
+var (
+	pubNameMapper, privNameMapper data.Mapper
+)
+
+// register both public key types with go-data (and thus go-wire)
+func init() {
+	pubNameMapper = data.NewMapper(PubName{}).
+		RegisterImplementation(Foo{}, "foo", 1).
+		RegisterImplementation(Bar{}, "bar", 2)
+	privNameMapper = data.NewMapper(PrivName{}).
+		RegisterImplementation(Foo{}, "foo", 1).
+		RegisterImplementation(Bar{}, "bar", 2)
+}
+
+type PubName struct {
+	PubNameInner
+}
+
+func (p PubName) MarshalJSON() ([]byte, error) {
+	return pubNameMapper.ToJSON(p.PubNameInner)
+}
+
+func (p *PubName) UnmarshalJSON(data []byte) error {
+	parsed, err := pubNameMapper.FromJSON(data)
+	if err == nil && parsed != nil {
+		p.PubNameInner = parsed.(PubNameInner)
+	}
+	return err
+}
+
+type PrivName struct {
+	privNameInner
+}
+
+func (p PrivName) MarshalJSON() ([]byte, error) {
+	return privNameMapper.ToJSON(p.privNameInner)
+}
+
+func (p *PrivName) UnmarshalJSON(data []byte) error {
+	parsed, err := privNameMapper.FromJSON(data)
+	if err == nil && parsed != nil {
+		p.privNameInner = parsed.(privNameInner)
+	}
+	return err
+}
+
+// TestEncodeDemo tries the various strategies to encode the objects
+func TestEncodeDemo(t *testing.T) {
+	assert, require := assert.New(t), require.New(t)
+	// assert := assert.New(t)
+	// require := require.New(t)
+
+	cases := []struct {
+		in, out  Greeter
+		expected string
+	}{
+		{PubName{Foo{"pub-foo"}}, &PubName{}, "Foo: pub-foo"},
+		{PubName{Bar{7}}, &PubName{}, "Bar #7"},
+		// Note these fail - if you can figure a solution here, I'll buy you a beer :)
+		// {PrivName{Foo{"priv-foo"}}, &PrivName{}, "Foo: priv-foo"},
+		// {PrivName{Bar{9}}, &PrivName{}, "Bar #9"},
+	}
+
+	for i, tc := range cases {
+		// make sure it is proper to start
+		require.Equal(tc.expected, tc.in.Greet())
+		fmt.Println(tc.expected)
+
+		// now, try to encode as binary
+		b, err := data.ToWire(tc.in)
+		if assert.Nil(err, "%d: %#v", i, tc.in) {
+			err := data.FromWire(b, tc.out)
+			if assert.Nil(err) {
+				assert.Equal(tc.expected, tc.out.Greet())
+			}
+		}
+
+		// try to encode it as json
+		j, err := data.ToJSON(tc.in)
+		if assert.Nil(err, "%d: %#v", i, tc.in) {
+			err := data.FromJSON(j, tc.out)
+			if assert.Nil(err) {
+				assert.Equal(tc.expected, tc.out.Greet())
+			}
+		}
+	}
+}
--- a/hd/address.go
+++ b/hd/address.go
@ -0,0 +1,289 @@
+package hd
+
+import (
+	"crypto/ecdsa"
+	"crypto/hmac"
+	"crypto/sha256"
+	"crypto/sha512"
+	"encoding/base64"
+	"encoding/binary"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"hash"
+	"log"
+	"math/big"
+	"strconv"
+	"strings"
+
+	"github.com/btcsuite/btcd/btcec"
+	"github.com/btcsuite/btcutil/base58"
+	"github.com/tendermint/go-crypto"
+	"golang.org/x/crypto/ripemd160"
+)
+
+const (
+	// BIP32 chainpath prefix
+	CHAINPATH_PREFIX_DEPOSIT   = 0
+	CHAINPATH_PREFIX_CHANGE    = 1
+	CHAINPATH_PREFIX_SWEEP     = 2
+	CHAINPATH_PREFIX_SWEEP_DRY = 102
+)
+
+func ComputeAddress(coin string, pubKeyHex string, chainHex string, path string, index int32) string {
+	pubKeyBytes := DerivePublicKeyForPath(
+		HexDecode(pubKeyHex),
+		HexDecode(chainHex),
+		fmt.Sprintf("%v/%v", path, index),
+	)
+	return AddrFromPubKeyBytes(coin, pubKeyBytes)
+}
+
+func ComputePrivateKey(mprivHex string, chainHex string, path string, index int32) string {
+	privKeyBytes := DerivePrivateKeyForPath(
+		HexDecode(mprivHex),
+		HexDecode(chainHex),
+		fmt.Sprintf("%v/%v", path, index),
+	)
+	return HexEncode(privKeyBytes)
+}
+
+func ComputeAddressForPrivKey(coin string, privKey string) string {
+	pubKeyBytes := PubKeyBytesFromPrivKeyBytes(HexDecode(privKey), true)
+	return AddrFromPubKeyBytes(coin, pubKeyBytes)
+}
+
+func SignMessage(privKey string, message string, compress bool) string {
+	prefixBytes := []byte("Bitcoin Signed Message:\n")
+	messageBytes := []byte(message)
+	bytes := []byte{}
+	bytes = append(bytes, byte(len(prefixBytes)))
+	bytes = append(bytes, prefixBytes...)
+	bytes = append(bytes, byte(len(messageBytes)))
+	bytes = append(bytes, messageBytes...)
+	privKeyBytes := HexDecode(privKey)
+	x, y := btcec.S256().ScalarBaseMult(privKeyBytes)
+	ecdsaPubKey := ecdsa.PublicKey{
+		Curve: btcec.S256(),
+		X:     x,
+		Y:     y,
+	}
+	ecdsaPrivKey := &btcec.PrivateKey{
+		PublicKey: ecdsaPubKey,
+		D:         new(big.Int).SetBytes(privKeyBytes),
+	}
+	sigbytes, err := btcec.SignCompact(btcec.S256(), ecdsaPrivKey, crypto.Sha256(crypto.Sha256(bytes)), compress)
+	if err != nil {
+		panic(err)
+	}
+	return base64.StdEncoding.EncodeToString(sigbytes)
+}
+
+// returns MPK, Chain, and master secret in hex.
+func ComputeMastersFromSeed(seed string) (string, string, string, string) {
+	secret, chain := I64([]byte("Bitcoin seed"), []byte(seed))
+	pubKeyBytes := PubKeyBytesFromPrivKeyBytes(secret, true)
+	return HexEncode(pubKeyBytes), HexEncode(secret), HexEncode(chain), HexEncode(secret)
+}
+
+func ComputeWIF(coin string, privKey string, compress bool) string {
+	return WIFFromPrivKeyBytes(coin, HexDecode(privKey), compress)
+}
+
+func ComputeTxId(rawTxHex string) string {
+	return HexEncode(ReverseBytes(CalcHash256(HexDecode(rawTxHex))))
+}
+
+// Private methods...
+
+func printKeyInfo(privKeyBytes []byte, pubKeyBytes []byte, chain []byte) {
+	if pubKeyBytes == nil {
+		pubKeyBytes = PubKeyBytesFromPrivKeyBytes(privKeyBytes, true)
+	}
+	addr := AddrFromPubKeyBytes("BTC", pubKeyBytes)
+	log.Println("\nprikey:\t%v\npubKeyBytes:\t%v\naddr:\t%v\nchain:\t%v",
+		HexEncode(privKeyBytes),
+		HexEncode(pubKeyBytes),
+		addr,
+		HexEncode(chain))
+}
+
+func DerivePrivateKeyForPath(privKeyBytes []byte, chain []byte, path string) []byte {
+	data := privKeyBytes
+	parts := strings.Split(path, "/")
+	for _, part := range parts {
+		prime := part[len(part)-1:] == "'"
+		// prime == private derivation. Otherwise public.
+		if prime {
+			part = part[:len(part)-1]
+		}
+		i, err := strconv.Atoi(part)
+		if err != nil {
+			panic(err)
+		}
+		if i < 0 {
+			panic(errors.New("index too large."))
+		}
+		data, chain = DerivePrivateKey(data, chain, uint32(i), prime)
+		//printKeyInfo(data, nil, chain)
+	}
+	return data
+}
+
+func DerivePublicKeyForPath(pubKeyBytes []byte, chain []byte, path string) []byte {
+	data := pubKeyBytes
+	parts := strings.Split(path, "/")
+	for _, part := range parts {
+		prime := part[len(part)-1:] == "'"
+		if prime {
+			panic(errors.New("cannot do a prime derivation from public key"))
+		}
+		i, err := strconv.Atoi(part)
+		if err != nil {
+			panic(err)
+		}
+		if i < 0 {
+			panic(errors.New("index too large."))
+		}
+		data, chain = DerivePublicKey(data, chain, uint32(i))
+		//printKeyInfo(nil, data, chain)
+	}
+	return data
+}
+
+func DerivePrivateKey(privKeyBytes []byte, chain []byte, i uint32, prime bool) ([]byte, []byte) {
+	data := []byte{}
+	if prime {
+		i = i | 0x80000000
+		data = append([]byte{byte(0)}, privKeyBytes...)
+	} else {
+		public := PubKeyBytesFromPrivKeyBytes(privKeyBytes, true)
+		data = public
+	}
+	data = append(data, uint32ToBytes(i)...)
+	data2, chain2 := I64(chain, data)
+	x := addScalars(privKeyBytes, data2)
+	return x, chain2
+}
+
+func DerivePublicKey(pubKeyBytes []byte, chain []byte, i uint32) ([]byte, []byte) {
+	data := []byte{}
+	data = append(data, pubKeyBytes...)
+	data = append(data, uint32ToBytes(i)...)
+	data2, chain2 := I64(chain, data)
+	data2p := PubKeyBytesFromPrivKeyBytes(data2, true)
+	return addPoints(pubKeyBytes, data2p), chain2
+}
+
+func addPoints(a []byte, b []byte) []byte {
+	ap, err := btcec.ParsePubKey(a, btcec.S256())
+	if err != nil {
+		panic(err)
+	}
+	bp, err := btcec.ParsePubKey(b, btcec.S256())
+	if err != nil {
+		panic(err)
+	}
+	sumX, sumY := btcec.S256().Add(ap.X, ap.Y, bp.X, bp.Y)
+	sum := (*btcec.PublicKey)(&btcec.PublicKey{
+		Curve: btcec.S256(),
+		X:     sumX,
+		Y:     sumY,
+	})
+	return sum.SerializeCompressed()
+}
+
+func addScalars(a []byte, b []byte) []byte {
+	aInt := new(big.Int).SetBytes(a)
+	bInt := new(big.Int).SetBytes(b)
+	sInt := new(big.Int).Add(aInt, bInt)
+	x := sInt.Mod(sInt, btcec.S256().N).Bytes()
+	x2 := [32]byte{}
+	copy(x2[32-len(x):], x)
+	return x2[:]
+}
+
+func uint32ToBytes(i uint32) []byte {
+	b := [4]byte{}
+	binary.BigEndian.PutUint32(b[:], i)
+	return b[:]
+}
+
+func HexEncode(b []byte) string {
+	return hex.EncodeToString(b)
+}
+
+func HexDecode(str string) []byte {
+	b, _ := hex.DecodeString(str)
+	return b
+}
+
+func I64(key []byte, data []byte) ([]byte, []byte) {
+	mac := hmac.New(sha512.New, key)
+	mac.Write(data)
+	I := mac.Sum(nil)
+	return I[:32], I[32:]
+}
+
+func AddrFromPubKeyBytes(coin string, pubKeyBytes []byte) string {
+	prefix := byte(0x00) // TODO Make const or configurable
+	h160 := CalcHash160(pubKeyBytes)
+	h160 = append([]byte{prefix}, h160...)
+	checksum := CalcHash256(h160)
+	b := append(h160, checksum[:4]...)
+	return base58.Encode(b)
+}
+
+func WIFFromPrivKeyBytes(coin string, privKeyBytes []byte, compress bool) string {
+	prefix := byte(0x80) // TODO Make const or configurable
+	bytes := append([]byte{prefix}, privKeyBytes...)
+	if compress {
+		bytes = append(bytes, byte(1))
+	}
+	checksum := CalcHash256(bytes)
+	bytes = append(bytes, checksum[:4]...)
+	return base58.Encode(bytes)
+}
+
+func PubKeyBytesFromPrivKeyBytes(privKeyBytes []byte, compress bool) (pubKeyBytes []byte) {
+	x, y := btcec.S256().ScalarBaseMult(privKeyBytes)
+	pub := (*btcec.PublicKey)(&btcec.PublicKey{
+		Curve: btcec.S256(),
+		X:     x,
+		Y:     y,
+	})
+
+	if compress {
+		return pub.SerializeCompressed()
+	}
+	return pub.SerializeUncompressed()
+}
+
+// Calculate the hash of hasher over buf.
+func CalcHash(buf []byte, hasher hash.Hash) []byte {
+	hasher.Write(buf)
+	return hasher.Sum(nil)
+}
+
+// calculate hash160 which is ripemd160(sha256(data))
+func CalcHash160(buf []byte) []byte {
+	return CalcHash(CalcHash(buf, sha256.New()), ripemd160.New())
+}
+
+// calculate hash256 which is sha256(sha256(data))
+func CalcHash256(buf []byte) []byte {
+	return CalcHash(CalcHash(buf, sha256.New()), sha256.New())
+}
+
+// calculate sha512(data)
+func CalcSha512(buf []byte) []byte {
+	return CalcHash(buf, sha512.New())
+}
+
+func ReverseBytes(buf []byte) []byte {
+	res := []byte{}
+	for i := len(buf) - 1; i >= 0; i-- {
+		res = append(res, buf[i])
+	}
+	return res
+}
--- a/hd/address_test.go
+++ b/hd/address_test.go
@ -0,0 +1,37 @@
+package hd
+
+/*
+
+import (
+	"encoding/hex"
+	"fmt"
+	"testing"
+)
+
+func TestManual(t *testing.T) {
+	bytes, _ := hex.DecodeString("dfac699f1618c9be4df2befe94dc5f313946ebafa386756bd4926a1ecfd7cf2438426ede521d1ee6512391bc200b7910bcbea593e68d52b874c29bdc5a308ed1")
+	fmt.Println(bytes)
+	puk, prk, ch, se := ComputeMastersFromSeed(string(bytes))
+	fmt.Println(puk, ch, se)
+
+	pubBytes2 := DerivePublicKeyForPath(
+		HexDecode(puk),
+		HexDecode(ch),
+		//"44'/118'/0'/0/0",
+		"0/0",
+	)
+	fmt.Printf("PUB2 %X\n", pubBytes2)
+
+	privBytes := DerivePrivateKeyForPath(
+		HexDecode(prk),
+		HexDecode(ch),
+		//"44'/118'/0'/0/0",
+		//"0/0",
+		"44'/118'/0'/0/0",
+	)
+	fmt.Printf("PRIV %X\n", privBytes)
+	pubBytes := PubKeyBytesFromPrivKeyBytes(privBytes, true)
+	fmt.Printf("PUB  %X\n", pubBytes)
+}
+
+*/
--- a/hd/hd_test.go
+++ b/hd/hd_test.go
@ -0,0 +1,189 @@
+package hd
+
+import (
+	"bytes"
+	"crypto/hmac"
+	"crypto/sha512"
+	"encoding/binary"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tyler-smith/go-bip39"
+
+	"github.com/btcsuite/btcd/chaincfg"
+	"github.com/btcsuite/btcutil/hdkeychain"
+	"github.com/mndrix/btcutil"
+	"github.com/tyler-smith/go-bip32"
+
+	"github.com/tendermint/go-crypto"
+)
+
+type addrData struct {
+	Mnemonic string
+	Master   string
+	Seed     string
+	Priv     string
+	Pub      string
+	Addr     string
+}
+
+// NOTE: atom fundraiser address
+var hdPath string = "m/44'/118'/0'/0/0"
+var hdToAddrTable []addrData
+
+func init() {
+
+	b, err := ioutil.ReadFile("test.json")
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+
+	err = json.Unmarshal(b, &hdToAddrTable)
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+}
+
+func TestHDToAddr(t *testing.T) {
+
+	for i, d := range hdToAddrTable {
+		privB, _ := hex.DecodeString(d.Priv)
+		pubB, _ := hex.DecodeString(d.Pub)
+		addrB, _ := hex.DecodeString(d.Addr)
+		seedB, _ := hex.DecodeString(d.Seed)
+		masterB, _ := hex.DecodeString(d.Master)
+
+		seed := bip39.NewSeed(d.Mnemonic, "")
+
+		fmt.Println("================================")
+		fmt.Println("ROUND:", i, "MNEMONIC:", d.Mnemonic)
+
+		// master, priv, pub := tylerSmith(seed)
+		// master, priv, pub := btcsuite(seed)
+		master, priv, pub := gocrypto(seed)
+
+		fmt.Printf("\tNODEJS GOLANG\n")
+		fmt.Printf("SEED \t%X %X\n", seedB, seed)
+		fmt.Printf("MSTR \t%X %X\n", masterB, master)
+		fmt.Printf("PRIV \t%X %X\n", privB, priv)
+		fmt.Printf("PUB  \t%X %X\n", pubB, pub)
+		_, _ = priv, privB
+
+		assert.Equal(t, master, masterB, fmt.Sprintf("Expected masters to match for %d", i))
+		assert.Equal(t, priv, privB, "Expected priv keys to match")
+		assert.Equal(t, pub, pubB, fmt.Sprintf("Expected pub keys to match for %d", i))
+
+		var pubT crypto.PubKeySecp256k1
+		copy(pubT[:], pub)
+		addr := pubT.Address()
+		fmt.Printf("ADDR  \t%X %X\n", addrB, addr)
+		assert.Equal(t, addr, addrB, fmt.Sprintf("Expected addresses to match %d", i))
+
+	}
+}
+
+func ifExit(err error, n int) {
+	if err != nil {
+		fmt.Println(n, err)
+		os.Exit(1)
+	}
+}
+
+func gocrypto(seed []byte) ([]byte, []byte, []byte) {
+
+	_, priv, ch, _ := ComputeMastersFromSeed(string(seed))
+
+	privBytes := DerivePrivateKeyForPath(
+		HexDecode(priv),
+		HexDecode(ch),
+		"44'/118'/0'/0/0",
+	)
+
+	pubBytes := PubKeyBytesFromPrivKeyBytes(privBytes, true)
+
+	return HexDecode(priv), privBytes, pubBytes
+}
+
+func btcsuite(seed []byte) ([]byte, []byte, []byte) {
+	fmt.Println("HD")
+	masterKey, err := hdkeychain.NewMaster(seed, &chaincfg.MainNetParams)
+	if err != nil {
+		hmac := hmac.New(sha512.New, []byte("Bitcoin seed"))
+		hmac.Write([]byte(seed))
+		intermediary := hmac.Sum(nil)
+
+		curve := btcutil.Secp256k1()
+		curveParams := curve.Params()
+
+		// Split it into our key and chain code
+		keyBytes := intermediary[:32]
+		fmt.Printf("\t%X\n", keyBytes)
+		fmt.Printf("\t%X\n", curveParams.N.Bytes())
+		keyInt, _ := binary.ReadVarint(bytes.NewBuffer(keyBytes))
+		fmt.Printf("\t%d\n", keyInt)
+	}
+	fh := hdkeychain.HardenedKeyStart
+	k, err := masterKey.Child(uint32(fh + 44))
+	ifExit(err, 44)
+	k, err = k.Child(uint32(fh + 118))
+	ifExit(err, 118)
+	k, err = k.Child(uint32(fh + 0))
+	ifExit(err, 1)
+	k, err = k.Child(uint32(0))
+	ifExit(err, 2)
+	k, err = k.Child(uint32(0))
+	ifExit(err, 3)
+	ecpriv, err := k.ECPrivKey()
+	ifExit(err, 10)
+	ecpub, err := k.ECPubKey()
+	ifExit(err, 11)
+
+	priv := ecpriv.Serialize()
+	pub := ecpub.SerializeCompressed()
+	mkey, _ := masterKey.ECPrivKey()
+	return mkey.Serialize(), priv, pub
+}
+
+// return priv and pub
+func tylerSmith(seed []byte) ([]byte, []byte, []byte) {
+	masterKey, err := bip32.NewMasterKey(seed)
+	if err != nil {
+		hmac := hmac.New(sha512.New, []byte("Bitcoin seed"))
+		hmac.Write([]byte(seed))
+		intermediary := hmac.Sum(nil)
+
+		curve := btcutil.Secp256k1()
+		curveParams := curve.Params()
+
+		// Split it into our key and chain code
+		keyBytes := intermediary[:32]
+		fmt.Printf("\t%X\n", keyBytes)
+		fmt.Printf("\t%X\n", curveParams.N.Bytes())
+		keyInt, _ := binary.ReadVarint(bytes.NewBuffer(keyBytes))
+		fmt.Printf("\t%d\n", keyInt)
+
+	}
+	ifExit(err, 0)
+	fh := bip32.FirstHardenedChild
+	k, err := masterKey.NewChildKey(fh + 44)
+	ifExit(err, 44)
+	k, err = k.NewChildKey(fh + 118)
+	ifExit(err, 118)
+	k, err = k.NewChildKey(fh + 0)
+	ifExit(err, 1)
+	k, err = k.NewChildKey(0)
+	ifExit(err, 2)
+	k, err = k.NewChildKey(0)
+	ifExit(err, 3)
+
+	priv := k.Key
+	pub := k.PublicKey().Key
+	return masterKey.Key, priv, pub
+}
--- a/hd/test.json
+++ b/hd/test.json
--- a/priv_key.go
+++ b/priv_key.go
@ -32,8 +32,8 @@ var privKeyMapper data.Mapper
 // register both private key types with go-data (and thus go-wire)
 func init() {
 	privKeyMapper = data.NewMapper(PrivKeyS{}).
-		RegisterInterface(PrivKeyEd25519{}, NameEd25519, TypeEd25519).
-		RegisterInterface(PrivKeySecp256k1{}, NameSecp256k1, TypeSecp256k1)
+		RegisterImplementation(PrivKeyEd25519{}, NameEd25519, TypeEd25519).
+		RegisterImplementation(PrivKeySecp256k1{}, NameSecp256k1, TypeSecp256k1)
 }

 // PrivKeyS add json serialization to PrivKey
@ -41,6 +41,13 @@ type PrivKeyS struct {
 	PrivKey
 }

+func WrapPrivKey(pk PrivKey) PrivKeyS {
+	for ppk, ok := pk.(PrivKeyS); ok; ppk, ok = pk.(PrivKeyS) {
+		pk = ppk.PrivKey
+	}
+	return PrivKeyS{pk}
+}
+
 func (p PrivKeyS) MarshalJSON() ([]byte, error) {
 	return privKeyMapper.ToJSON(p.PrivKey)
 }
@ -160,9 +167,9 @@ func (privKey PrivKeySecp256k1) Sign(msg []byte) Signature {

 func (privKey PrivKeySecp256k1) PubKey() PubKey {
 	_, pub__ := secp256k1.PrivKeyFromBytes(secp256k1.S256(), privKey[:])
-	pub := [64]byte{}
-	copy(pub[:], pub__.SerializeUncompressed()[1:])
-	return PubKeySecp256k1(pub)
+	var pub PubKeySecp256k1
+	copy(pub[:], pub__.SerializeCompressed())
+	return pub
 }

 func (privKey PrivKeySecp256k1) Equals(other PrivKey) bool {
--- a/pub_key.go
+++ b/pub_key.go
@ -2,6 +2,7 @@ package crypto

 import (
 	"bytes"
+	"crypto/sha256"

 	secp256k1 "github.com/btcsuite/btcd/btcec"
 	"github.com/tendermint/ed25519"
@ -26,8 +27,8 @@ var pubKeyMapper data.Mapper
 // register both public key types with go-data (and thus go-wire)
 func init() {
 	pubKeyMapper = data.NewMapper(PubKeyS{}).
-		RegisterInterface(PubKeyEd25519{}, NameEd25519, TypeEd25519).
-		RegisterInterface(PubKeySecp256k1{}, NameSecp256k1, TypeSecp256k1)
+		RegisterImplementation(PubKeyEd25519{}, NameEd25519, TypeEd25519).
+		RegisterImplementation(PubKeySecp256k1{}, NameSecp256k1, TypeSecp256k1)
 }

 // PubKeyS add json serialization to PubKey
@ -35,6 +36,13 @@ type PubKeyS struct {
 	PubKey
 }

+func WrapPubKey(pk PubKey) PubKeyS {
+	for ppk, ok := pk.(PubKeyS); ok; ppk, ok = pk.(PubKeyS) {
+		pk = ppk.PubKey
+	}
+	return PubKeyS{pk}
+}
+
 func (p PubKeyS) MarshalJSON() ([]byte, error) {
 	return pubKeyMapper.ToJSON(p.PubKey)
 }
@ -135,20 +143,20 @@ func (pubKey PubKeyEd25519) Equals(other PubKey) bool {

 //-------------------------------------

-// Implements PubKey
-type PubKeySecp256k1 [64]byte
+// Implements PubKey.
+// Compressed pubkey (just the x-cord),
+// prefixed with 0x02 or 0x03, depending on the y-cord.
+type PubKeySecp256k1 [33]byte

+// Implements Bitcoin style addresses: RIPEMD160(SHA256(pubkey))
 func (pubKey PubKeySecp256k1) Address() []byte {
-	w, n, err := new(bytes.Buffer), new(int), new(error)
-	wire.WriteBinary(pubKey[:], w, n, err)
-	if *err != nil {
-		PanicCrisis(*err)
-	}
-	// append type byte
-	encodedPubkey := append([]byte{TypeSecp256k1}, w.Bytes()...)
-	hasher := ripemd160.New()
-	hasher.Write(encodedPubkey) // does not error
-	return hasher.Sum(nil)
+	hasherSHA256 := sha256.New()
+	hasherSHA256.Write(pubKey[:]) // does not error
+	sha := hasherSHA256.Sum(nil)
+
+	hasherRIPEMD160 := ripemd160.New()
+	hasherRIPEMD160.Write(sha) // does not error
+	return hasherRIPEMD160.Sum(nil)
 }

 func (pubKey PubKeySecp256k1) Bytes() []byte {
@ -166,7 +174,7 @@ func (pubKey PubKeySecp256k1) VerifyBytes(msg []byte, sig_ Signature) bool {
 		return false
 	}

-	pub__, err := secp256k1.ParsePubKey(append([]byte{0x04}, pubKey[:]...), secp256k1.S256())
+	pub__, err := secp256k1.ParsePubKey(pubKey[:], secp256k1.S256())
 	if err != nil {
 		return false
 	}
--- a/pub_key_test.go
+++ b/pub_key_test.go
@ -0,0 +1,41 @@
+package crypto
+
+import (
+	"encoding/hex"
+	"testing"
+
+	"github.com/btcsuite/btcutil/base58"
+	"github.com/stretchr/testify/assert"
+)
+
+type keyData struct {
+	priv string
+	pub  string
+	addr string
+}
+
+var secpDataTable = []keyData{
+	{
+		priv: "a96e62ed3955e65be32703f12d87b6b5cf26039ecfa948dc5107a495418e5330",
+		pub:  "02950e1cdfcb133d6024109fd489f734eeb4502418e538c28481f22bce276f248c",
+		addr: "1CKZ9Nx4zgds8tU7nJHotKSDr4a9bYJCa3",
+	},
+}
+
+func TestPubKeySecp256k1Address(t *testing.T) {
+	for _, d := range secpDataTable {
+		privB, _ := hex.DecodeString(d.priv)
+		pubB, _ := hex.DecodeString(d.pub)
+		addrB, _, _ := base58.CheckDecode(d.addr)
+
+		var priv PrivKeySecp256k1
+		copy(priv[:], privB)
+
+		pubT := priv.PubKey().(PubKeySecp256k1)
+		pub := pubT[:]
+		addr := priv.PubKey().Address()
+
+		assert.Equal(t, pub, pubB, "Expected pub keys to match")
+		assert.Equal(t, addr, addrB, "Expected addresses to match")
+	}
+}
--- a/signature.go
+++ b/signature.go
@ -22,8 +22,8 @@ var sigMapper data.Mapper
 // register both public key types with go-data (and thus go-wire)
 func init() {
 	sigMapper = data.NewMapper(SignatureS{}).
-		RegisterInterface(SignatureEd25519{}, NameEd25519, TypeEd25519).
-		RegisterInterface(SignatureSecp256k1{}, NameSecp256k1, TypeSecp256k1)
+		RegisterImplementation(SignatureEd25519{}, NameEd25519, TypeEd25519).
+		RegisterImplementation(SignatureSecp256k1{}, NameSecp256k1, TypeSecp256k1)
 }

 // SignatureS add json serialization to Signature
@ -31,6 +31,13 @@ type SignatureS struct {
 	Signature
 }

+func WrapSignature(sig Signature) SignatureS {
+	for ssig, ok := sig.(SignatureS); ok; ssig, ok = sig.(SignatureS) {
+		sig = ssig.Signature
+	}
+	return SignatureS{sig}
+}
+
 func (p SignatureS) MarshalJSON() ([]byte, error) {
 	return sigMapper.ToJSON(p.Signature)
 }
--- a/signature_test.go
+++ b/signature_test.go
@ -107,3 +107,37 @@ func TestSignatureEncodings(t *testing.T) {
 		assert.True(t, strings.HasPrefix(text, tc.sigName))
 	}
 }
+
+func TestWrapping(t *testing.T) {
+	assert := assert.New(t)
+
+	// construct some basic constructs
+	msg := CRandBytes(128)
+	priv := GenPrivKeyEd25519()
+	pub := priv.PubKey()
+	sig := priv.Sign(msg)
+
+	// do some wrapping
+	pubs := []PubKeyS{
+		WrapPubKey(nil),
+		WrapPubKey(pub),
+		WrapPubKey(WrapPubKey(WrapPubKey(WrapPubKey(pub)))),
+		WrapPubKey(PubKeyS{PubKeyS{PubKeyS{pub}}}),
+	}
+	for _, p := range pubs {
+		_, ok := p.PubKey.(PubKeyS)
+		assert.False(ok)
+	}
+
+	sigs := []SignatureS{
+		WrapSignature(nil),
+		WrapSignature(sig),
+		WrapSignature(WrapSignature(WrapSignature(WrapSignature(sig)))),
+		WrapSignature(SignatureS{SignatureS{SignatureS{sig}}}),
+	}
+	for _, s := range sigs {
+		_, ok := s.Signature.(SignatureS)
+		assert.False(ok)
+	}
+
+}