CryptoApi

Defines cryptographic methods.

Constructors

Create instance of CryptoApi.

public void CryptoApi()

Methods

close

public void close()

convertPEMKeyToWIFKey

Converts given private key in PEM format to its WIF format.

Params

pemKey

String

private key to convert

public String convertPEMKeyToWIFKey(
String pemKey
)

Returns

String · Private key in WIF format

decryptDataSymmetric

Decrypts buffer with a given key using AES.

Params

data

byte[]

buffer to decrypt

symmetricKey

byte[]

key used to decrypt data

public byte[] decryptDataSymmetric(
byte[] data,
byte[] symmetricKey
)

Returns

byte[] · Plain (decrypted) data buffer

derivePrivateKey

Generates a new private ECC key from a password using pbkdf2.

Params

password

String

the password used to generate the new key

salt

String

random string (additional input for the hashing function)

public String derivePrivateKey(
String password,
String salt
)

Returns

String · Generated ECC key in WIF format

Generates a new private ECC key from a password using pbkdf2. This version of the derive function has a rounds count increased to 200k. This makes using this function a safer choice, but it makes the received key different than in the original version.

Params

password

String

the password used to generate the new key

salt

String

random string (additional input for the hashing function)

public String derivePrivateKey2(
String password,
String salt
)

Returns

String · generated ECC key in WIF format

derivePublicKey

Generates a new public ECC key as a pair for an existing private key.

Params

privateKey

String

private ECC key in WIF format

public String derivePublicKey(
String privateKey
)

Returns

String · Generated ECC key in BASE58DER format

encryptDataSymmetric

Encrypts buffer with a given key using AES.

Params

data

byte[]

buffer to encrypt

symmetricKey

byte[]

key used to encrypt data

public byte[] encryptDataSymmetric(
byte[] data,
byte[] symmetricKey
)

Returns

byte[] · Encrypted data buffer

generateKeySymmetric

Generates a new symmetric key.

public byte[] generateKeySymmetric()

Returns

byte[] · Generated key

generatePrivateKey

Generates a new private ECC key.

Params

randomSeed

String

optional string used as the base to generate the new key

public String generatePrivateKey(
String randomSeed
)

Returns

String · Generated ECC key in WIF format

signData

Creates a signature of data using given key.

Params

data

byte[]

data the buffer to sign

privateKey

String

the key used to sign data

public byte[] signData(
byte[] data,
String privateKey
)

Returns

byte[] · Signature of data

verifySignature

Validate a signature of data using given key.

Params

data

byte[]

buffer

signature

byte[]

of data

publicKey

String

public ECC key in BASE58DER format used to validate data

public boolean verifySignature(
byte[] data,
byte[] signature,
String publicKey
)

Returns

boolean · data validation result