Storing ECDSA Private Keys in Go
When generating ECDSA private/public key pairs using ecdsa.GenerateKey(), securely storing the private key is crucial for maintaining key integrity and data security. Go does not provide a direct method for marshaling private keys as it does for public keys with elliptic.Marshal().
Recommended Approach
The recommended approach for storing ECDSA private keys in Go is to utilize a multi-step encoding process involving the following components:
Encoding and Decoding Example
The following code sample demonstrates the encoding and decoding of ECDSA keys in Go using the recommended approach:
func encode(privateKey *ecdsa.PrivateKey, publicKey *ecdsa.PublicKey) (string, string) { x509Encoded, _ := x509.MarshalECPrivateKey(privateKey) pemEncoded := pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: x509Encoded}) x509EncodedPub, _ := x509.MarshalPKIXPublicKey(publicKey) pemEncodedPub := pem.EncodeToMemory(&pem.Block{Type: "PUBLIC KEY", Bytes: x509EncodedPub}) return string(pemEncoded), string(pemEncodedPub) } func decode(pemEncoded string, pemEncodedPub string) (*ecdsa.PrivateKey, *ecdsa.PublicKey) { block, _ := pem.Decode([]byte(pemEncoded)) x509Encoded := block.Bytes privateKey, _ := x509.ParseECPrivateKey(x509Encoded) blockPub, _ := pem.Decode([]byte(pemEncodedPub)) x509EncodedPub := blockPub.Bytes genericPublicKey, _ := x509.ParsePKIXPublicKey(x509EncodedPub) publicKey := genericPublicKey.(*ecdsa.PublicKey) return privateKey, publicKey }
This approach ensures the secure storage and retrieval of ECDSA private keys by utilizing industry-standard encoding techniques and file formats.
The above is the detailed content of How to Securely Store ECDSA Private Keys in Go?. For more information, please follow other related articles on the PHP Chinese website!