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signer_key.go
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/
signer_key.go
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package xdr
import (
"fmt"
"github.com/Kregopaulgue/go/strkey"
"github.com/Kregopaulgue/go/support/errors"
)
// Address returns the strkey encoded form of this signer key. This method will
// panic if the SignerKey is of an unknown type.
func (skey *SignerKey) Address() string {
if skey == nil {
return ""
}
vb := strkey.VersionByte(0)
raw := make([]byte, 32)
switch skey.Type {
case SignerKeyTypeSignerKeyTypeEd25519:
vb = strkey.VersionByteAccountID
key := skey.MustEd25519()
copy(raw, key[:])
case SignerKeyTypeSignerKeyTypeHashX:
vb = strkey.VersionByteHashX
key := skey.MustHashX()
copy(raw, key[:])
case SignerKeyTypeSignerKeyTypeHashTx:
vb = strkey.VersionByteHashTx
key := skey.MustHashTx()
copy(raw, key[:])
default:
panic(fmt.Errorf("Unknown signer key type: %v", skey.Type))
}
return strkey.MustEncode(vb, raw)
}
// Equals returns true if `other` is equivalent to `skey`
func (skey *SignerKey) Equals(other SignerKey) bool {
if skey.Type != other.Type {
return false
}
switch skey.Type {
case SignerKeyTypeSignerKeyTypeEd25519:
l := skey.MustEd25519()
r := other.MustEd25519()
return l == r
case SignerKeyTypeSignerKeyTypeHashX:
l := skey.MustHashX()
r := other.MustHashX()
return l == r
case SignerKeyTypeSignerKeyTypeHashTx:
l := skey.MustHashTx()
r := other.MustHashTx()
return l == r
default:
panic(fmt.Errorf("Unknown signer key type: %v", skey.Type))
}
}
// SetAddress modifies the receiver, setting it's value to the SignerKey form
// of the provided address.
func (skey *SignerKey) SetAddress(address string) error {
if skey == nil {
return nil
}
vb, err := strkey.Version(address)
if err != nil {
return errors.Wrap(err, "failed to extract address version")
}
var keytype SignerKeyType
switch vb {
case strkey.VersionByteAccountID:
keytype = SignerKeyTypeSignerKeyTypeEd25519
case strkey.VersionByteHashX:
keytype = SignerKeyTypeSignerKeyTypeHashX
case strkey.VersionByteHashTx:
keytype = SignerKeyTypeSignerKeyTypeHashTx
default:
return errors.Errorf("invalid version byte: %v", vb)
}
raw, err := strkey.Decode(vb, address)
if err != nil {
return err
}
if len(raw) != 32 {
return errors.New("invalid address")
}
var ui Uint256
copy(ui[:], raw)
*skey, err = NewSignerKey(keytype, ui)
return err
}