Import an existing key

Import or convert existing Hedera keys with PrivateKey.fromString, PublicKey.fromString, and related helpers to load DER, raw, or PEM key material into the SDK.

Construct keys in another format to a key representation or import keys from a file.

Method	Type	Description
PrivateKey.fromString(<privateKey>)	String	Constructs a private key string to PrivateKey
PublicKey.fromString(<publicKey>)	String	Constructs a public key string to PublicKey
PrivateKey.fromStringECDSA(<privateKey>)	String	Constructs an ECDSA key from a private key string
PublicKey.fromStringECDSA(<publicKey>)	String	Constructs an ECDSA public key from a public key string
PrivateKey.fromBytesECDSA(<privateKey>)	byte[ ]	Constructs an ECDSA key from a private key bytes
PublicKey.fromBytesECDSA(<publicKey>)	byte[ ]	Constructs an ECDSA public key from a public key bytes
PrivateKey.fromStringED25519(<privateKey>)	String	Constructs an ED25519 key from a private key string
PublicKey.fromStringED25519(<publicKey>)	String	Constructs an ED25519 public key from a public key string
PrivateKey.fromBytesED25519(<privateKey>)	byte [ ]	Constructs an ED25519 key from a private key bytes
PublicKey.fromBytesED25519(<publiceKey>)	byte [ ]	Constructs an ED25519 public key from a public key bytes
PrivateKey.fromBytes(<privateKey>)	byte [ ]	Constructs a private key from bytes to PrivateKey
PublicKey.fromBytes(<publicKey>)	byte [ ]	Contructs a public key from bytes to PublicKey
PrivateKey.fromPem(<pemEncoded>)	String	Parse a private key from a PEM encoded string
PrivateKey.fromPem(<encodedPem, password>)	String, String	Parse a private key from a PEM encoded string. The private key may be encrypted, e.g. if it was generated by OpenSSL.
PrivateKey.readPem(<pemfile>)	Reader	Parse a private key from a PEM encoded reader
PrivateKey.readPem(<pemFile, password>)	Reader, String	Parse a private key from a PEM encoded stream. The key may be encrypted, e.g. if it was generated by OpenSSL.

Java

//Converts an ECDSA private key string to PrivateKey
PrivateKey privateKey = PrivateKey.fromStringECDSA("3030020100300706052b8104000a042204208776c6b831a1b61ac10dac0304a2843de4716f98b09147a169f41d7b4d48ad5");

//The public key associated with the private key
PublicKey publicKey = PublicKey.fromStringECDSA("3036301006072a8648ce3d020106052b8104000a032200029bba954cd41e8ab9f05a0b3b038b1c2c35b9bc16b4e38bc67a2e5ebab2fe72fb");

//Converts an ECDSA private key string to PrivateKey
const privateKey = PrivateKey.fromStringECDSA("3030020100300706052b8104000a042204208776c6b831a1b61ac10dac0304a2843de4716f98b09147a169f41d7b4d48ad5");

//The public key associated with the private key
const publicKey = PublicKey.fromStringECDSA("3036301006072a8648ce3d020106052b8104000a032200029bba954cd41e8ab9f05a0b3b038b1c2c35b9bc16b4e38bc67a2e5ebab2fe72fb");

//Converts an ECDSA private key string to PrivateKey
privateKey, err := hedera.PrivateKeyFromStringECDSA("3030020100300706052b8104000a042204208776c6b831a1b61ac10dac0304a2843de4716f98b09147a169f41d7b4d48ad5")

if err != nil {
		panic(err)
	}

//The public key associated with the private key
publicKey, err := hedera.PublicKeyFromStringECDSA("3036301006072a8648ce3d020106052b8104000a032200029bba954cd41e8ab9f05a0b3b038b1c2c35b9bc16b4e38bc67a2e5ebab2fe72fb")

if err != nil {
		panic(err)
	}

// Import ECDSA keys from strings
let private_key = PrivateKey::from_str("3030020100300706052b8104000a042204208776c6b831a1b61ac10dac0304a2843de4716f98b09147a169f41d7b4d48ad5");
let public_key = PublicKey::from_str("3036301006072a8648ce3d020106052b8104000a032200029bba954cd41e8ab9f05a0b3b038b1c2c35b9bc16b4e38bc67a2e5ebab2fe72fb");

// Import from PEM
let private_key = PrivateKey::from_pem("-----BEGIN PRIVATE KEY-----\n...\n-----END PRIVATE KEY-----");
// With password if encrypted
let private_key = PrivateKey::from_pem_with_password("-----BEGIN PRIVATE KEY-----\n...\n-----END PRIVATE KEY-----", "password");

println!("Imported private key: {:?}", private_key);
println!("Imported public key: {:?}", public_key);

// v0.34.0