import-an-existing-key.md

Import an existing key

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.

{% tabs %} {% tab title="Java" %}

//Converts a private key string to PrivateKey
PrivateKey privateKey = PrivateKey.fromStringED25519("302e020100300506032b657004220420d763df96caaabf192c67326e87c32a1ae4571f739022c77d2acaae5dd09cfb13");

//The public key associated with the private key
PublicKey publicKey = PublicKey.fromStringED25519("302a300506032b65700321008f556741dcb5e144e5cabfce5355ad5050ec7a6ea15787a5fd759d616e047d24");

{% endtab %}

{% tab title="JavaScript" %}

//Converts a private key string to PrivateKey
const privateKey = PrivateKey.fromStringED25519("302e020100300506032b657004220420d763df96caaabf192c67326e87c32a1ae4571f739022c77d2acaae5dd09cfb13");

//The public key associated with the private key
const publicKey = PublicKey.fromStringED25519("302a300506032b65700321008f556741dcb5e144e5cabfce5355ad5050ec7a6ea15787a5fd759d616e047d24");

{% endtab %}

{% tab title="Go" %}

//Converts a private key string to PrivateKey
privateKey, err := hedera.PrivateKeyFromStringEd25519("302e020100300506032b65700422042012a4a4add3d885bd61d7ce5cff88c5ef2d510651add00a7f64cb90de3359b105")

if err != nil {
		panic(err)
	}

//The public key associated with the private key
publicKey, err := hedera.PublicKeyFromString("302a300506032b6570032100d292412f1c86507224c1db656050c2162c91983540d608f6a31e9b43359bc5e")

if err != nil {
		panic(err)
	}

{% endtab %} {% endtabs %}