Sign and verify payment channel claim

docs/src/index.md.ejs

@@ -37,5 +37,7 @@
 <% include combine.md.ejs %>
 <% include submit.md.ejs %>
 <% include generateAddress.md.ejs %>
+<% include signPaymentChannelClaim.md.ejs %>
+<% include verifyPaymentChannelClaim.md.ejs %>
 <% include computeLedgerHash.md.ejs %>
 <% include events.md.ejs %>

docs/src/signPaymentChannelClaim.md.ejs

@@ -0,0 +1,28 @@
+## signPaymentChannelClaim
+
+`signPaymentChannelClaim(channel: string, amount: string, privateKey: string): string`
+
+Sign a payment channel claim. The signature can be submitted in a subsequent [PaymentChannelClaim](#preparePaymmentChannelClaim) transaction.
+
+### Parameters
+
+<%- renderSchema("input/sign-payment-channel-claim.json") %>
+
+### Return Value
+
+This method returns a signature string:
+
+<%- renderSchema("output/sign-payment-channel-claim.json") %>
+
+### Example
+
+```javascript
+const channel =
+  '3E18C05AD40319B809520F1A136370C4075321B285217323396D6FD9EE1E9037';
+const amount = '.00001';
+const privateKey =
+  'ACCD3309DB14D1A4FC9B1DAE608031F4408C85C73EE05E035B7DC8B25840107A';
+return api.signPaymentChannelClaim(channel, amount, privateKey);
+```
+
+<%- renderFixture("responses/sign-payment-channel-claim.json") %>

docs/src/verifyPaymentChannelClaim.md.ejs

@@ -0,0 +1,31 @@
+## verifyPaymentChannelClaim
+
+`verifyPaymentChannelClaim(channel: string, amount: string, signature: string, publicKey: string): boolean`
+
+Verify a payment channel claim signature.
+
+### Parameters
+
+<%- renderSchema("input/verify-payment-channel-claim.json") %>
+
+### Return Value
+
+This method returns `true` if the claim signature is valid.
+
+<%- renderSchema("output/verify-payment-channel-claim.json") %>
+
+### Example
+
+```javascript
+const channel =
+  '3E18C05AD40319B809520F1A136370C4075321B285217323396D6FD9EE1E9037';
+const amount = '.00001';
+const signature = <%- importFile("test/fixtures/responses/sign-payment-channel-claim.json") %>;
+const publicKey =
+  '02F89EAEC7667B30F33D0687BBA86C3FE2A08CCA40A9186C5BDE2DAA6FA97A37D8';
+return api.verifyPaymentChannelClaim(channel, amount, signature, publicKey);
+```
+
+```json
+true
+```