org.lightningj.paywall.btcpayserver

Class BTCPayServerHelper

java.lang.Object

org.lightningj.paywall.btcpayserver.BTCPayServerHelper

public class BTCPayServerHelper
extends java.lang.Object

Help class for generating SIN value for a given EC Public Key. Created by philip on 2018-10-10.

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.util.logging.Logger	log

Constructor Summary

Constructors

Constructor and Description
BTCPayServerHelper()

Method Summary

Modifier and Type	Method and Description
java.lang.String	genSignature(java.security.PrivateKey privateKey, java.lang.String requestURL, java.lang.String data) Method to generate a signature header value in BTC Pay Server request, by first appending requestURL and data and then sign it using the private key an ECDSAWithSHA256 algorithm and converting it into hex.
java.lang.String	pubKeyInHex(java.security.interfaces.ECPublicKey publicKey) Help method to generate the hex representation of a public key used in BTC Pay Server to identify an access key.
java.lang.String	toSIN(java.lang.String publicKeyHex) Method to generate a SIN for a given EC Public Key encoded in hex format.

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static java.util.logging.Logger log

Constructor Detail

BTCPayServerHelper

public BTCPayServerHelper()

Method Detail

pubKeyInHex

public java.lang.String pubKeyInHex(java.security.interfaces.ECPublicKey publicKey)
                             throws InternalErrorException

Help method to generate the hex representation of a public key used in BTC Pay Server to identify an access key.

Parameters:

publicKey - the public key to convert to BTCPay hex representation.

Returns:

hexadecimal encoded of the compressed Q point.

Throws:

InternalErrorException - if problems occurred converting the public key.

genSignature

public java.lang.String genSignature(java.security.PrivateKey privateKey,
                                     java.lang.String requestURL,
                                     java.lang.String data)
                              throws InternalErrorException

Method to generate a signature header value in BTC Pay Server request, by first appending requestURL and data and then sign it using the private key an ECDSAWithSHA256 algorithm and converting it into hex.

Parameters:

privateKey - the private key to use when signing.

requestURL - the request URL done.

data - the request data (usually the JSON data about to be sent).

Returns:

a hexadecimal string of the signature to set as header value in the request.

Throws:

InternalErrorException - if problems occurred generating the signature.

toSIN

public java.lang.String toSIN(java.lang.String publicKeyHex)
                       throws InternalErrorException

Method to generate a SIN for a given EC Public Key encoded in hex format.

Parameters:

publicKeyHex - hex encoded compressed Q value of public key, same value as uploaded to BTC Pay Server.

Returns:

the generated SIN value.

Throws:

InternalErrorException - if internal errors occurred generating the SIN Value.