frostfs-crypto/load.go

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package crypto
import (
"crypto/ecdsa"
"encoding/hex"
"fmt"
"os"
)
// LoadPrivateKey allows to load private key from various formats:
// - wif string
// - hex string
// - file path (D-bytes or SEC 1 / ASN.1 DER form)
func LoadPrivateKey(val string) (*ecdsa.PrivateKey, error) {
if data, err := os.ReadFile(val); err == nil {
return UnmarshalPrivateKey(data)
} else if data, err = hex.DecodeString(val); err == nil {
return UnmarshalPrivateKey(data)
} else if key, err := WIFDecode(val); err == nil {
return key, nil
}
return nil, fmt.Errorf("unknown key format (%q), expect: hex-string, wif or file-path", val)
}