com.casper.sdk.service.signing

Class SigningService

java.lang.Object

com.casper.sdk.service.signing.SigningService

public class SigningService
extends Object

The service for signing

Constructor Summary

Constructors

Constructor and Description
SigningService()

Method Summary

Modifier and Type	Method and Description
PublicKey	fromClPublicKey(CLPublicKey publicKey) Obtains the java security public keys raw and converts to a casper labs public key.
KeyPair	generateKeyPair(Algorithm algorithm) Generates a key pair for the specified algorithm.
KeyPair	generateKeyPair(Algorithm algorithm, byte[] seed) Generates a key pair for the specified algorithm.
<T extends Key> T	loadKey(InputStream keyIn)
KeyPair	loadKeyPair(File publicKeyFile, File privateKeyFile) Loads the key pairs from the provide file
KeyPair	loadKeyPair(InputStream publicKeyIn, InputStream privateKeyIn) Loads the key pairs from the provided streams
byte[]	signWithPrivateKey(PrivateKey privateKey, byte[] toSign) Signs a message using the provided key
CLPublicKey	toClPublicKey(PublicKey publicKey) Obtains the java security public keys raw and converts to a casper labs public key.
boolean	verifySignature(PublicKey publicKey, byte[] toSign, byte[] signature) Verifies a signed message
void	writeKey(OutputStream out, Key key) Writes a key to a PEM file

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SigningService

public SigningService()

Method Detail

generateKeyPair

public KeyPair generateKeyPair(Algorithm algorithm)

Generates a key pair for the specified algorithm.

Parameters:

algorithm - the algorithm of new key pair to generate

Returns:

a new key pair of the specified algorithm

generateKeyPair

public KeyPair generateKeyPair(Algorithm algorithm,
                               byte[] seed)

Generates a key pair for the specified algorithm.

Parameters:

algorithm - the algorithm of new key pair to generate

seed - the entropy source to be used when generating a key pair

Returns:

a new key pair of the specified algorithm

loadKeyPair

public KeyPair loadKeyPair(File publicKeyFile,
                           File privateKeyFile)

Loads the key pairs from the provide file

Parameters:

publicKeyFile - the public key .pem file

privateKeyFile - the private key .pem file

Returns:

the files loaded into a AsymmetricCipherKeyPair

loadKeyPair

public KeyPair loadKeyPair(InputStream publicKeyIn,
                           InputStream privateKeyIn)

Loads the key pairs from the provided streams

Parameters:

publicKeyIn - the public key .pem file input stream

privateKeyIn - the private key .pem file input stream

Returns:

the files loaded into a AsymmetricCipherKeyPair

signWithPrivateKey

public byte[] signWithPrivateKey(PrivateKey privateKey,
                                 byte[] toSign)

Signs a message using the provided key

Parameters:

privateKey - the private key to sign with

toSign - the message to sign

Returns:

the signed message

toClPublicKey

public CLPublicKey toClPublicKey(PublicKey publicKey)

Obtains the java security public keys raw and converts to a casper labs public key.

Parameters:

publicKey - the public key to obtain the raw bytes from

Returns:

the raw bytes

fromClPublicKey

public PublicKey fromClPublicKey(CLPublicKey publicKey)

Obtains the java security public keys raw and converts to a casper labs public key.

Parameters:

publicKey - the public key to obtain the raw bytes from

Returns:

the raw bytes

verifySignature

public boolean verifySignature(PublicKey publicKey,
                               byte[] toSign,
                               byte[] signature)

Verifies a signed message

Parameters:

publicKey - the public key to verify signature with

toSign - the message to sign

signature - the signed message

Returns:

true if the signature is valid otherwise false

writeKey

public void writeKey(OutputStream out,
                     Key key)

Writes a key to a PEM file

Parameters:

out - the stream to write a key to

key - the key to write in a .PEM file

loadKey

public <T extends Key> T loadKey(InputStream keyIn)