Verifier.checkTxProposalBody = function(credentials, txp) {
$.checkArgument(txp.creatorId);
$.checkState(credentials.isComplete());
var creatorKeys = _.find(credentials.publicKeyRing, function(item) {
if (WalletUtils.xPubToCopayerId(item.xPubKey) === txp.creatorId) return true;
});
if (!creatorKeys) return false;
var creatorSigningPubKey;
// If the txp using a selfsigned pub key?
if (txp.proposalSignaturePubKey) {
// Verify it...
if (!WalletUtils.verifyRequestPubKey(txp.proposalSignaturePubKey, txp.proposalSignaturePubKeySig, creatorKeys.xPubKey))
return false;
creatorSigningPubKey = txp.proposalSignaturePubKey;
} else {
creatorSigningPubKey = creatorKeys.requestPubKey;
}
if (!creatorSigningPubKey) return false;
var hash;
if (txp.outputs) {
var outputs = _.map(txp.outputs, function(o) {
return {
toAddress: o.toAddress,
amount: o.amount,
message: o.encryptedMessage || o.message || null
};
});
var proposalHeader = {
outputs: outputs,
message: txp.encryptedMessage || txp.message || null,
payProUrl: txp.payProUrl
};
hash = WalletUtils.getProposalHash(proposalHeader);
} else {
hash = WalletUtils.getProposalHash(txp.toAddress, txp.amount, txp.encryptedMessage || txp.message || null, txp.payProUrl);
}
log.debug('Regenerating & verifying tx proposal hash -> Hash: ', hash, ' Signature: ', txp.proposalSignature);
if (!WalletUtils.verifyMessage(hash, txp.proposalSignature, creatorSigningPubKey))
return false;
if (!Verifier.checkAddress(credentials, txp.changeAddress))
return false;
return true;
};
_.each(copayers, function(copayer) {
if (error) return;
if (uniq[copayers.xPubKey]++) {
log.error('Repeated public keys in server response');
error = true;
}
// Not signed pub keys
if (!copayer.name || !copayer.xPubKey || !copayer.requestPubKey || !copayer.signature) {
log.error('Missing copayer fields in server response');
error = true;
} else {
var hash = WalletUtils.getCopayerHash(copayer.name, copayer.xPubKey, copayer.requestPubKey);
if (!WalletUtils.verifyMessage(hash, copayer.signature, walletPubKey)) {
log.error('Invalid signatures in server response');
error = true;
}
}
});
WalletService.prototype._verifySignature = function(text, signature, pubKey) {
return WalletUtils.verifyMessage(text, signature, pubKey);
};