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Author Topic: help in my code  (Read 737 times)
FabioCarpi (OP)
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January 06, 2015, 02:03:25 PM
 #1

I'm redoing the entire bitcoin in php only to understand it better.
buy im facing a bug that i believe is in the 3rd part code...
the 3rd part code is not generating the correct sign, comparing the asm section...

My code: https://github.com/FabioCarpi/MyCoin
ECDSA library: https://github.com/mdanter/phpecc
how to sign: http://bitcoin.stackexchange.com/questions/32628/redeeming-a-raw-transaction-step-by-step-example-required

the bitcoin-qt transaction
Code:
{
"txid" : "ad989cd6f44a2ab5f045133e49265c94439f8215269ddc9f45cb62e3fb22bf3c",
"version" : 1,
"locktime" : 0,
"vin" : [
{
"txid" : "2340b563df807a3ce1346804ced39f513f9af91aa53a93776d580f528c80307d",
"vout" : 120,
"scriptSig" : {
"asm" : "3045022100f5a81f1794b125f989173d9196fa2708bd7c2a7b4dfd3cbe75c3e3007fe4a3a002204646af9d4c6a95b0a4975ee12b3eb301e018f5846720e6405967bc33125ec29001 0355bb21eeff72c061adf57064b239d67d5ff77f8c2a1f7b8a2bd4b854dbdab634",
"hex" : "483045022100f5a81f1794b125f989173d9196fa2708bd7c2a7b4dfd3cbe75c3e3007fe4a3a002204646af9d4c6a95b0a4975ee12b3eb301e018f5846720e6405967bc33125ec29001210355bb21eeff72c061adf57064b239d67d5ff77f8c2a1f7b8a2bd4b854dbdab634"
},
"sequence" : 4294967295
}
],
"vout" : [
{
"value" : 0.00015845,
"n" : 0,
"scriptPubKey" : {
"asm" : "OP_DUP OP_HASH160 1e6bfcb5baf275ad219e3f58d82203b118614832 OP_EQUALVERIFY OP_CHECKSIG",
"hex" : "76a9141e6bfcb5baf275ad219e3f58d82203b11861483288ac",
"reqSigs" : 1,
"type" : "pubkeyhash",
"addresses" : [
"13mrdqLsMJoZQ9ippio8B39Qiq9f9AZpuq"
]
}
}
]
}
my program transaction
Code:
{
    "txid": "b74960aec12e1a7211238dba60847913bc929c908c8f309da0048bd95633fc72",
    "version": 1,
    "locktime": 0,
    "vin": [
        {
            "txid": "2340b563df807a3ce1346804ced39f513f9af91aa53a93776d580f528c80307d",
            "vout": 120,
            "scriptSig": {
                "asm": "3045022100d5858128654c60cb2c0e1594433b2ef703a75983b9bfd42909ba790b7f29bc580220415b811d0517beba05c9a79cfbe0df01de497d686b8d8ea6521d20f939b2c7ca01 032cf7099e6397032e9d47853cf01dae85a7af039bd0e6fd55682e91d502b5507e",
                "hex": "483045022100d5858128654c60cb2c0e1594433b2ef703a75983b9bfd42909ba790b7f29bc580220415b811d0517beba05c9a79cfbe0df01de497d686b8d8ea6521d20f939b2c7ca01"
            },
            "sequence": 4294967295
        }
    ],
    "vout": [
        {
            "value": "0,00015845",
            "n": 0,
            "scriptPubKey": {
                "asm": "OP_DUP OP_HASH160 1e6bfcb5baf275ad219e3f58d82203b118614832 OP_EQUALVERIFY OP_CHECKSIG",
                "hex": "76a9141e6bfcb5baf275ad219e3f58d82203b11861483288ac",
                "reqSigs": 1,
                "type": "pubkeyhash",
                "addresses": [
                    "13mrdqLsMJoZQ9ippio8B39Qiq9f9AZpuq"
                ]
            }
        }
    ]
}
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January 06, 2015, 02:39:53 PM
 #2

You would have to point to the code. I can't look at all of your code.

Also, this is just my advice, but please use english naming of your files + comments. It's difficult to navigate.

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FabioCarpi (OP)
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January 06, 2015, 03:36:58 PM
 #3

Sorry about that. The program is in Portuguese. I'm asking for help here because I'm can't find help in my language...
dabura667
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January 06, 2015, 05:13:12 PM
 #4

Your code is using the wrong pubkey.

Your pubkey (from bitcoin-qt)
0355bb21eeff72c061adf57064b239d67d5ff77f8c2a1f7b8a2bd4b854dbdab634

Your pubkey (from your code)
032cf7099e6397032e9d47853cf01dae85a7af039bd0e6fd55682e91d502b5507e

My Tip Address:
1DXcHTJS2DJ3xDoxw22wCt11FeAsgfzdBU
FabioCarpi (OP)
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January 06, 2015, 05:40:20 PM
 #5

thank you. had not seen it...
i fixed that...
buy i alread got the wrong asm...

there something that i can't understand...
im using this code (https://github.com/Bit-Wasp/bitcoin-lib-php/blob/master/src/RawTransaction.php) to sign...
but why i have to use a random number (line 1122) to sign?
there i will got differents asm...

my program
Code:
{
    "txid": "964acec4d856bedbddd3dc691799d1048e34dca6b66d07089cc2bf38570aa6d7",
    "version": 1,
    "locktime": 0,
    "vin": [
        {
            "txid": "2340b563df807a3ce1346804ced39f513f9af91aa53a93776d580f528c80307d",
            "vout": 120,
            "scriptSig": {
                "asm": "304402204615cfb3c49d99f166e929902b5e5480f42701d4f3b9fa6626fd53aed926c5400220725d66f22943f4032b1d57950fd0babe19ed5a4d8f9fe07daa91951bef38195b01 0355bb21eeff72c061adf57064b239d67d5ff77f8c2a1f7b8a2bd4b854dbdab634",
                "hex": "47304402204615cfb3c49d99f166e929902b5e5480f42701d4f3b9fa6626fd53aed926c5400220725d66f22943f4032b1d57950fd0babe19ed5a4d8f9fe07daa91951bef38195b01"
            },
            "sequence": 4294967295
        }
    ],
    "vout": [
        {
            "value": 0.00015845,
            "n": 0,
            "scriptPubKey": {
                "asm": "OP_DUP OP_HASH160 1e6bfcb5baf275ad219e3f58d82203b118614832 OP_EQUALVERIFY OP_CHECKSIG",
                "hex": "76a9141e6bfcb5baf275ad219e3f58d82203b11861483288ac",
                "reqSigs": 1,
                "type": "pubkeyhash",
                "addresses": [
                    "13mrdqLsMJoZQ9ippio8B39Qiq9f9AZpuq"
                ]
            }
        }
    ]
}
bitcoin-qt
Code:
{
"txid" : "ad989cd6f44a2ab5f045133e49265c94439f8215269ddc9f45cb62e3fb22bf3c",
"version" : 1,
"locktime" : 0,
"vin" : [
{
"txid" : "2340b563df807a3ce1346804ced39f513f9af91aa53a93776d580f528c80307d",
"vout" : 120,
"scriptSig" : {
"asm" : "3045022100f5a81f1794b125f989173d9196fa2708bd7c2a7b4dfd3cbe75c3e3007fe4a3a002204646af9d4c6a95b0a4975ee12b3eb301e018f5846720e6405967bc33125ec29001 0355bb21eeff72c061adf57064b239d67d5ff77f8c2a1f7b8a2bd4b854dbdab634",
"hex" : "483045022100f5a81f1794b125f989173d9196fa2708bd7c2a7b4dfd3cbe75c3e3007fe4a3a002204646af9d4c6a95b0a4975ee12b3eb301e018f5846720e6405967bc33125ec29001210355bb21eeff72c061adf57064b239d67d5ff77f8c2a1f7b8a2bd4b854dbdab634"
},
"sequence" : 4294967295
}
],
"vout" : [
{
"value" : 0.00015845,
"n" : 0,
"scriptPubKey" : {
"asm" : "OP_DUP OP_HASH160 1e6bfcb5baf275ad219e3f58d82203b118614832 OP_EQUALVERIFY OP_CHECKSIG",
"hex" : "76a9141e6bfcb5baf275ad219e3f58d82203b11861483288ac",
"reqSigs" : 1,
"type" : "pubkeyhash",
"addresses" : [
"13mrdqLsMJoZQ9ippio8B39Qiq9f9AZpuq"
]
}
}
]
}
Remember remember the 5th of November
Legendary
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Activity: 1862
Merit: 1011

Reverse engineer from time to time


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January 06, 2015, 10:20:55 PM
 #6

If RFC6979 is used, there will be no need for a random value.

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