Near Sign transaction

[headria]

Hello. I want to sign Near transaction and broadcast it to rpc near. but all of the time I've got an error from rpc server. I will share the fun signer that I have written on Kotlin.

`

    private fun signTransactionNEAR() {

    val transferAction = NEAR.Transfer.newBuilder().apply {
        deposit = ByteString.copyFrom((BigNumber(getExtAmount()) * BigNumber(1E24)).toPlainString().toHexByteArray())
    }.build()

    val signingInput = NEAR.SigningInput.newBuilder().apply {
        this.
        signerId = coinKey.address
        nonce = nearViewAccessKey.nonce
        receiverId = getExtRecipientAddress()

        addActionsBuilder().apply {
            transfer = transferAction
        }

        blockHash = ByteString.copyFrom(Base58.decodeNoCheck(nearBlockDetail.hash))

       //  ByteString.copyFrom(wallet.getKeyForCoin(coin.toTrustWalletCoin).data())
        privateKey = coinKey.privateKey
    }.build()

    val output = AnySigner.sign(signingInput, CoinType.NEAR, Near.parser())
    val signedTransaction: String = Base64.getEncoder().encodeToString(output.signedTransaction.toByteArray())
     nearViewModel.sendRawTransaction(signedTransaction)
}

`

[optout21]

Have you double checked with wallet-core tests?
Seems you are setting SignerId to address, this seems incorrect.

https://github.com/trustwallet/wallet-core/blob/master/android/app/src/androidTest/java/com/trustwallet/core/app/blockchains/near/TestNEARSigner.kt
https://github.com/trustwallet/wallet-core/blob/master/tests/NEAR/SignerTests.cpp

[headria]

@catenocrypt ??

[headria]

the problem was with the deposit when I multiply it by 30 ( * 10^30) the transaction was ok. but Its have another problem with the deposit.
after signing the transaction, the deposit change to an integer number. (ex. I want to send "1000000000000000000000000" which is equal to 1 NEAR, in the final data after signing it changed to 1, which is incorrect and it should be to 1000000000000000000000000 ).

[headria]

I will share the result of the correct transaction. and our postman result.

[headria]

Website near transaction result for send 5 NEAR,

"transaction": { "signer_id": "arab2.testnet", "public_key": "ed25519:DK2DSND8dtEVCxM4miSuKPCNmz7gm6CfWwq6DXfuGrte", "nonce": 78650022000002, "receiver_id": "b6ea122313da14bb542a3622f36dda184a1b7c9bb1550bb022623e3ee76f736f", "actions": [ { "Transfer": { "deposit": "5000000000000000000000000" } } ], "signature": "ed25519:2AtP1orhrYcTztWRq4tLTx8U7nsQgaW6qi8vkbKRTcxWvLcWN3Zb9mnuPAA3fJKUx3E18GiiZcXM4JSSdWXkYTpp", "hash": "5c1xNKLTG4stcAvzYAYwa4E9Gdio6RSqJXx7vMH7rL5s" },

our transaction result for send 1 NEAR

"transaction": { "signer_id": "1e350eb8eb9c24deec11c12affca191cfa012d76ec0c6eed6c0e0bd03e3941ee", "public_key": "ed25519:32vA1Jf5LodSphnxDYpBiLWLmgykA88nEg3psPLhzLBw", "nonce": 5, "receiver_id": "b6ea122313da14bb542a3622f36dda184a1b7c9bb1550bb022623e3ee76f736f", "actions": [ { "Transfer": { "deposit": "16" } } ], "signature": "ed25519:7enQ2oHprG1XUeznmmhqjyHtgdgk6cuQvzjpbsTCUgAriyaAzwFpXivCK2GA8zfHuH4Pe8pw5p7mMYPfK9Ju1s8", "hash": "GGuTR6ks6b6FAjxcbK5XkECKrzzTW1Ss9W5HZnXZw6Fr" }

please check the deposit field.

[lamnd91]

deposit value should be reversed with fixed length = 16. Here is the code in my project, you should try it later

fun BigDecimal.toNearByteString() = run {  
        //Convert to Yocto near  
        val amountBigInt = scaleByPowerOfTen(24).toBigInteger()  
        val amountByteArray = amountBigInt.toByteArray()  
        val bytes = amountByteArray.reversedArray().copyOf(16)  
        ByteString.copyFrom(bytes)  
    }