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dimitardanailov/signTxn.js

Created February 12, 2022 07:16
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Algorand sign transaction
Raw
signTxn.js
signTxn(sk: Uint8Array) {
// construct signed message
const sTxn: EncodedSignedTransaction = {
sig: this.rawSignTxn(sk),
txn: this.get_obj_for_encoding(),
};
// add AuthAddr if signing with a different key than From indicates
const keypair = nacl.keyPairFromSecretKey(sk);
const pubKeyFromSk = keypair.publicKey;
if (
address.encodeAddress(pubKeyFromSk) !==
address.encodeAddress(this.from.publicKey)
) {
sTxn.sgnr = Buffer.from(pubKeyFromSk);
}
return new Uint8Array(encoding.encode(sTxn));
}
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