aptos-core [cli] Sign now execute later, basic Cold wallet

trafficstars

Description

This lets you sign a transaction disconnected from the internet, and submit it later. Useful if you want to have a "cold" key, and disconnected from the internet, but still want to execute transactions.

Test Plan

With simulation

$ aptos account transfer --signed-transaction-path saved_txn --account testing --amount 500 --transaction-expiration-secs 500
Do you want to submit a transaction for a range of [55200 - 82800] Octas at a gas unit price of 100 Octas? [yes/no] >
yes
{
  "Result": {
    "transaction_hash": "0x1b5eb3b3d052571f07a0feca73610055aa6dbb0ae4c12ead1ae393fc205acdd5",
    "saved_transaction_path": "saved_txn"
  }
}

$ cat saved_txn 
B6DBF76636021A840C64DA0CA6AA94297B4EAD015F7398521F57347F6836489801000000000000000200000000000000000000000000000000000000000000000000000000000000010D6170746F735F6163636F756E74087472616E7366657200022001C434E9243F7EDC17AFCBA6144CED93198CF37CBCBE574B4D2D00F756FE92B908F4010000000000003C0300000000000064000000000000002ACB4963000000002200204C9FB933051300FABFB4515F924353D5272E5AFCAE927DE1138BFE813137F30A40CE5F131E0D68FD0B9BC52A20670A155B6A9B05F50300FB9933917315384BA724BF6E088FE8ED91F6B94D17B37283914DF7253D4C16E3927E492AD389AE36AE0E

$ aptos move run-signed-transaction --signed-transaction-path saved_txn
{
  "Result": {
    "transaction_hash": "0x1b5eb3b3d052571f07a0feca73610055aa6dbb0ae4c12ead1ae393fc205acdd5",
    "gas_used": 585,
    "gas_unit_price": 100,
    "sender": "b6dbf76636021a840c64da0ca6aa94297b4ead015f7398521f57347f68364898",
    "sequence_number": 1,
    "success": true,
    "timestamp_us": 1665780501649736,
    "version": 1618454,
    "vm_status": "Executed successfully"
  }
}

With no simulation

$ aptos account transfer --signed-transaction-path saved_txn --account testing --amo
unt 500 --transaction-expiration-secs 1000 --sequence-number 2 --max-gas 30000 --gas-unit-price 100
{
  "Result": {
    "transaction_hash": "0xa495843646a83ee80267467aca7fbb2e0c0944dfd60a81a98676d9b31ed4e53c",
    "saved_transaction_path": "saved_txn"
  }
}
$ aptos 
move run-signed-transaction --signed-transaction-path saved_txn
{
  "Result": {
    "transaction_hash": "0xa495843646a83ee80267467aca7fbb2e0c0944dfd60a81a98676d9b31ed4e53c",
    "gas_used": 585,
    "gas_unit_price": 100,
    "sender": "b6dbf76636021a840c64da0ca6aa94297b4ead015f7398521f57347f68364898",
    "sequence_number": 2,
    "success": true,
    "timestamp_us": 1665780926888643,
    "version": 1625649,
    "vm_status": "Executed successfully"
  }
}

With no network connection

$ curl https://fullnode.devnet.aptoslabs.com/v1
{"chain_id":34,"epoch":"13","ledger_version":"1633806","oldest_ledger_version":"0","ledger_timestamp":"1665781417161896","node_role":"full_node","oldest_block_height":"0","block_height":"645538","git_hash":"83641d3f083762f31700060e5e95fbb1cbc28bf0"}%                                                      
$ aptos account transfer --signed-transaction-path saved_txn --account testing --amount 500 --transaction-expiration-secs 1000 --sequence-number 3 --max-gas 30000 --gas-unit-price 100 --chain-id 34
{
  "Result": {
    "transaction_hash": "0x8a2654c1827d076e69c6ec2d5b4cfa9e0e31898229f7061762565aced0452654",
    "saved_transaction_path": "saved_txn"
  }
}
$ curl https://fullnode.devnet.aptoslabs.com/v1
curl: (6) Could not resolve host: fullnode.devnet.aptoslabs.com
$ aptos account transfer --signed-transaction-path saved_txn --account testing --amount 500 --transaction-expiration-secs 1000 --sequence-number 3 --max-gas 30000 --gas-unit-price 100 --chain-id 34
{
  "Result": {
    "transaction_hash": "0x3b20c27afb28e043873290f61dc07dff43f59cfa18a5b8f8fff787deaa5ea724",
    "saved_transaction_path": "saved_txn"
  }
}
$ curl https://fullnode.devnet.aptoslabs.com/v1
{"chain_id":34,"epoch":"13","ledger_version":"1634457","oldest_ledger_version":"0","ledger_timestamp":"1665781452427486","node_role":"full_node","oldest_block_height":"0","block_height":"645802","git_hash":"83641d3f083762f31700060e5e95fbb1cbc28bf0"}%                                                      
$ aptos move run-signed-transaction --signed-transaction-path saved_txn
{
  "Result": {
    "transaction_hash": "0x3b20c27afb28e043873290f61dc07dff43f59cfa18a5b8f8fff787deaa5ea724",
    "gas_used": 585,
    "gas_unit_price": 100,
    "sender": "b6dbf76636021a840c64da0ca6aa94297b4ead015f7398521f57347f68364898",
    "sequence_number": 3,
    "success": true,
    "timestamp_us": 1665781458178844,
    "version": 1634559,
    "vm_status": "Executed successfully"
  }
}

This change is