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Update README with transaction signing example

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This commit is contained in:
Nicholas Dudfield
2015-07-20 12:14:22 +07:00
parent 7623f3d926
commit f43a2e1201
3 changed files with 114 additions and 1 deletions
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68
packages/ripple-keypairs/README.md
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@@ -17,3 +17,71 @@
accountID: 'r9LqNeG6qHxjeUocjvVki2XR35weJ9mZgQ', accountID: 'r9LqNeG6qHxjeUocjvVki2XR35weJ9mZgQ',
publicKey: 'ED5F5AC8B98974A3CA843326D9B88CEBD0560177B973EE0B149F782CFAA06DC66A' }') publicKey: 'ED5F5AC8B98974A3CA843326D9B88CEBD0560177B973EE0B149F782CFAA06DC66A' }')
``` ```
## Sign a transaction
see [examples/sign-transaction.js](examples/sign-transaction.js)
```js
var Transaction = require('ripple-lib').Transaction;
var keyPairFromSeed = require('../').keyPairFromSeed;
var SIGNING_PREFIX = [0x53, 0x54, 0x58, 0x00];
function prettyJSON(obj) {
return JSON.stringify(obj, undefined, 2);
}
function signingData(tx) {
return SIGNING_PREFIX.concat(tx.serialize().buffer);
}
function signTxJson(seed, json) {
var keyPair = keyPairFromSeed(seed);
var tx = Transaction.from_json(json);
var tx_json = tx.tx_json;
tx_json.SigningPubKey = keyPair.pubKeyHex();
tx_json.TxnSignature = keyPair.signHex(signingData(tx));
var serialized = tx.serialize();
var id = tx.hash('HASH_TX_ID', /* Uint256: */ false , /* pre: */ serialized);
return {
hash: id,
tx_blob: serialized.to_hex(),
tx_json: tx_json
};
}
var seed = 'sEd7t79mzn2dwy3vvpvRmaaLbLhvme6';
var tx_json = {
Account: 'r9LqNeG6qHxjeUocjvVki2XR35weJ9mZgQ',
Amount: '1000',
Destination: 'rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh',
Fee: '10',
Flags: 2147483648,
Sequence: 1,
TransactionType: 'Payment',
};
console.log(prettyJSON(signTxJson(seed, tx_json)));
```
```json
{
"hash": "1B6B9652F95D826C9D9C3FD30F208130433CBC7C48C10F6EC2CC5E4A85D167FF",
"tx_blob": "120000228000000024000000016140000000000003E868400000000000000A7321ED5F5AC8B98974A3CA843326D9B88CEBD0560177B973EE0B149F782CFAA06DC66A74407D0825105229923B261C716F225181E5A66A34C9480446ABE64818A673954CC34D42946CD82172814F037976AE3800BDE983624A45FCDBED4A548C4650BF900D81145B812C9D57731E27A2DA8B1830195F88EF32A3B68314B5F762798A53D543A014CAF8B297CFF8F2F937E8",
"tx_json": {
"Account": "r9LqNeG6qHxjeUocjvVki2XR35weJ9mZgQ",
"Amount": "1000",
"Destination": "rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh",
"Fee": "10",
"Flags": 2147483648,
"Sequence": 1,
"TransactionType": "Payment",
"SigningPubKey": "ED5F5AC8B98974A3CA843326D9B88CEBD0560177B973EE0B149F782CFAA06DC66A",
"TxnSignature": "7D0825105229923B261C716F225181E5A66A34C9480446ABE64818A673954CC34D42946CD82172814F037976AE3800BDE983624A45FCDBED4A548C4650BF900D"
}
}
```

45
packages/ripple-keypairs/examples/sign-transaction.js Normal file
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@@ -0,0 +1,45 @@
var Transaction = require('ripple-lib').Transaction;
var keyPairFromSeed = require('../').keyPairFromSeed;
var SIGNING_PREFIX = [0x53, 0x54, 0x58, 0x00];
function prettyJSON(obj) {
return JSON.stringify(obj, undefined, 2);
}
function signingData(tx) {
return SIGNING_PREFIX.concat(tx.serialize().buffer);
}
function signTxJson(seed, json) {
var keyPair = keyPairFromSeed(seed);
var tx = Transaction.from_json(json);
var tx_json = tx.tx_json;
tx_json.SigningPubKey = keyPair.pubKeyHex();
tx_json.TxnSignature = keyPair.signHex(signingData(tx));
var serialized = tx.serialize();
var id = tx.hash('HASH_TX_ID', /* Uint256: */ false , /* pre: */ serialized);
return {
hash: id,
tx_blob: serialized.to_hex(),
tx_json: tx_json
};
}
var seed = 'sEd7t79mzn2dwy3vvpvRmaaLbLhvme6';
var tx_json = {
Account: 'r9LqNeG6qHxjeUocjvVki2XR35weJ9mZgQ',
Amount: '1000',
Destination: 'rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh',
Fee: '10',
Flags: 2147483648,
Sequence: 1,
TransactionType: 'Payment',
};
console.log('unsigned', prettyJSON(tx_json));
console.log('signed', prettyJSON(signTxJson(seed, tx_json)));

2
packages/ripple-keypairs/package.json
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@@ -34,7 +34,7 @@
"map-stream": "~0.1.0", "map-stream": "~0.1.0",
"mocha": "~2.1.0", "mocha": "~2.1.0",
"nock": "^0.34.1", "nock": "^0.34.1",
"ripple-lib": "ripple/ripple-lib#8d98e443c5302a87d70410d834758099595d46df", "ripple-lib": "^0.12.4",
"webpack": "~1.5.3", "webpack": "~1.5.3",
"yargs": "~1.3.1" "yargs": "~1.3.1"
}, },