crypto: add key loading functions
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f1ebad2508
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0c7df37351
@ -8,6 +8,8 @@ import (
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"crypto/rand"
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"crypto/sha256"
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"fmt"
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"io"
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"os"
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"encoding/hex"
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"encoding/json"
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@ -99,6 +101,32 @@ func FromECDSAPub(pub *ecdsa.PublicKey) []byte {
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return elliptic.Marshal(S256(), pub.X, pub.Y)
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}
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// HexToECDSA parses a secp256k1 private key.
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func HexToECDSA(hexkey string) (*ecdsa.PrivateKey, error) {
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b, err := hex.DecodeString(hexkey)
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if err != nil {
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return nil, errors.New("invalid hex string")
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}
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if len(b) != 32 {
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return nil, errors.New("invalid length, need 256 bits")
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}
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return ToECDSA(b), nil
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}
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// LoadECDSA loads a secp256k1 private key from the given file.
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func LoadECDSA(file string) (*ecdsa.PrivateKey, error) {
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buf := make([]byte, 32)
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fd, err := os.Open(file)
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if err != nil {
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return nil, err
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}
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defer fd.Close()
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if _, err := io.ReadFull(fd, buf); err != nil {
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return nil, err
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}
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return ToECDSA(buf), nil
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}
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func GenerateKey() (*ecdsa.PrivateKey, error) {
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return ecdsa.GenerateKey(S256(), rand.Reader)
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}
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@ -25,11 +25,12 @@ package crypto
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import (
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"bytes"
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"code.google.com/p/go-uuid/uuid"
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"crypto/ecdsa"
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"crypto/elliptic"
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"encoding/json"
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"io"
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"code.google.com/p/go-uuid/uuid"
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)
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type Key struct {
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