Ok I have tried everything now

I have used get_private_key but its giving error because:

The private key must already be in the wallet.

I have also tried get_account_history, it is showing me the transactions but with error:

Memo is encrypted to a key BTS81JWvhxW5YQ52rDC2fzCddi3BopYrEtT2qza3qu55s7iFAjLLo not in this wallet.

Now I guess there is no way I can get someone's private key programmatically.

Would appreciate if someone can verify this or identify any other method to get the private key of any account through api or wallet.
Thanks

@xeroc Can I ask the merchants for private key? won't they be hesitating in entering their private?

This will make my job a lot easier, but I dont know if it will be acceptible or not, as private keys are confidential.

Well right now I have established a trusted node on my local machine

here: https://github.com/bitshares/bitshares-2 I found:

Is there a way to allow external program to drive cli_wallet via websocket, JSONRPC, or HTTP?

Yes. External programs may connect to the CLI wallet and make its calls over a websockets API. To do this, run the wallet in server mode, i.e. cli_wallet -s "127.0.0.1:9999" and then have the external program connect to it over the specified port (in this example, port 9999).

If it is possible to create a websocket for CLI wallet then I can simply call this socket from my application and use either get_transaction_history or get_private_key

Am i right?

@xeroc Thanks buddy but get_private_key is not available in DATABASE API

Now the only option I can think of is creating a full node of my own and write a wrapper that will take my API calls and return me my desired information.

is there any other way?

@xeroc lemme explain what I am doing,

Well I am working on developing a payment gateway for bitshares in my project, I have created the invoice successfully, now when a user makes payment then he is redirected to my url along with block and transaction numbers.

I then call API with this data to get the whole transaction.
E.g. {"id":1,"method":"get_transaction","params":[3153947,0]}
The API returns me transaction details like (to, from, amount and memo). but memo is encrypted

So I call the API again for getting the account to which payment was made.
E.g.  {"id":1,"method":"get_accounts","params":[["1.2.96993"]]}
I extract the memo key from options and then use this memo key as wif key in your code but still getting the following error:

Traceback (most recent call last):
  File "memo/memo_test.py", line 11, in <module>
    priv = PrivateKey(wifkey)
  File "/home/developer03/.local/lib/python3.4/site-packages/graphenelib-0.3rc1-py3.4.egg/graphenebase/account.py", line 249, in __init__
  File "/home/developer03/.local/lib/python3.4/site-packages/graphenelib-0.3rc1-py3.4.egg/graphenebase/account.py", line 258, in compressedpubkey
  File "/usr/local/lib/python3.4/dist-packages/ecdsa/keys.py", line 149, in from_string
    assert len(string) == curve.baselen, (len(string), curve.baselen)
AssertionError: (33, 32)

Hi xeroc,

Thanks for your help buddy. Well I am using API to get the transaction to the merchant's account.

I have tried the memo_key found in options returned when we use "get_accounts" to fetch account details but now I am getting this error:

--cannot decode-- (33, 32)

Also "get_account_history" is not available in database API and I can't use CLI for this due to nature of my application.

I have successfully created the QR code, Actually I was creating qr code of whole URL, instead I had to create QR code for base58BLOB only, the generated qr code is workinf perfectly fine in bitshares android app.

Hi again Guyz,

I am following this link https://github.com/cryptonomex/graphene/wiki/Wallet%20Merchant%20Protocol to create payment request.

I have created this JSON:
{
   "to" : "mbilal-knysys",
   "to_label" : "mbilal",
   "memo" : "Invoice #1234",
   "line_items" : [
        { "label" : "Something to Buy", "quantity": 1, "price" : "10.00 BTS" }
    ],
    "note" : "test payment",
    "callback" : "https://merchant.org/complete"
}
Then used http://nmrugg.github.io/LZMA-JS/demos/advanced_demo.html to compress it to:
5d 00 00 00 02 0d 01 00 00 00 00 00 00 00 3d 82
80 18 fb a3 18 e3 e9 d3 0e 4b de 31 cc 45 63 09
5a 31 0f c4 90 89 9d 56 e5 f9 a3 9b ec 81 6c 21
bc 44 ac c6 ba 95 3d 85 65 e0 26 e2 e8 f7 7d 93
af 5b a8 10 b9 1e 24 6c 71 3d 91 ff b1 25 91 1f
a9 ad 85 5e f5 21 c2 84 79 57 e3 ab fa 67 01 56
81 f1 6e 01 3d da 73 c8 ce 1a 3e 22 d7 2c 22 01
3e c4 2e ff b7 8f b9 b4 b5 d8 9f a3 23 c2 9c 8f
2f 08 b6 2d 01 63 88 01 70 f9 fe a8 35 e0 d4 85
7b 74 7b 68 15 cc 75 92 08 86 c4 56 0d 41 af 73
4a 11 fa df ce 14 34 80 81 d8 f7 d0 e8 61 d4 58
72 bc d7 1f 8a 04 0f 83 99 a8 74 13 fb db df 77
63 7b ea ae 64 ab e2 25 c9 d6 16 36 ff 35 ee 40
00
Then used http://lenschulwitz.com/base58 for base58 encoding:
32BKKahCswNpnquiVorvDuAz6SWDRUWmGP9SaCX1AwF1mSKM1nebRmkpSjymMgiNCZEbrRgVyFKaZbWLReANgfDn6qw9tcJS53ubkbx4EMPwZCpVMzxRPQu2deGqCdEw77mxhi1BAwigcTp3UbZv8vGMXZFMKmMzSfheQJLyJe36CHPjpJCcbd73kVVwnaxXJb674WdshZvc1MgJsnvinnGtqjx59MVve1Whh2t4mGPQXXjbYea4uSzAVn8Yf1Cy5YQxXKC9AVdRUfEMdjfs13CjfSP9YT

Now when I am visiting https://bitshares.openledger.info/#/invoice/32BKKahCswNpnquiVorvDuAz6SWDRUWmGP9SaCX1AwF1mSKM1nebRmkpSjymMgiNCZEbrRgVyFKaZbWLReANgfDn6qw9tcJS53ubkbx4EMPwZCpVMzxRPQu2deGqCdEw77mxhi1BAwigcTp3UbZv8vGMXZFMKmMzSfheQJLyJe36CHPjpJCcbd73kVVwnaxXJb674WdshZvc1MgJsnvinnGtqjx59MVve1Whh2t4mGPQXXjbYea4uSzAVn8Yf1Cy5YQxXKC9AVdRUfEMdjfs13CjfSP9YT

It is showing

Asset is not supported by this blockchain.

I have tried many different assets and json but got same result.

I would appreciate if anyone can point me in right direction.

Thanks

@abit yes I am doing it deliberately.