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electrum | Electrum Bitcoin Wallet | Cryptography library

 by   spesmilo Python Version: Current License: MIT

 by   spesmilo Python Version: Current License: MIT

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kandi X-RAY | electrum Summary

electrum is a Python library typically used in Financial Services, Fintech, Security, Cryptography, Bitcoin applications. electrum has no bugs, it has build file available, it has a Permissive License and it has medium support. However electrum has 1 vulnerabilities. You can download it from GitHub.
Electrum Bitcoin Wallet
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Support
Quality
Quality
Security
Security
License
License
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kandi-support Support

  • electrum has a medium active ecosystem.
  • It has 5580 star(s) with 2695 fork(s). There are 330 watchers for this library.
  • It had no major release in the last 12 months.
  • There are 925 open issues and 4796 have been closed. On average issues are closed in 331 days. There are 63 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of electrum is current.
electrum Support
Best in #Cryptography
Average in #Cryptography
electrum Support
Best in #Cryptography
Average in #Cryptography

quality kandi Quality

  • electrum has 0 bugs and 0 code smells.
electrum Quality
Best in #Cryptography
Average in #Cryptography
electrum Quality
Best in #Cryptography
Average in #Cryptography

securitySecurity

  • electrum has 1 vulnerability issues reported (0 critical, 1 high, 0 medium, 0 low).
  • electrum code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
electrum Security
Best in #Cryptography
Average in #Cryptography
electrum Security
Best in #Cryptography
Average in #Cryptography

license License

  • electrum is licensed under the MIT License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
electrum License
Best in #Cryptography
Average in #Cryptography
electrum License
Best in #Cryptography
Average in #Cryptography

buildReuse

  • electrum releases are not available. You will need to build from source code and install.
  • Build file is available. You can build the component from source.
  • electrum saves you 59879 person hours of effort in developing the same functionality from scratch.
  • It has 76894 lines of code, 6416 functions and 290 files.
  • It has high code complexity. Code complexity directly impacts maintainability of the code.
electrum Reuse
Best in #Cryptography
Average in #Cryptography
electrum Reuse
Best in #Cryptography
Average in #Cryptography
Top functions reviewed by kandi - BETA

kandi has reviewed electrum and discovered the below as its top functions. This is intended to give you an instant insight into electrum implemented functionality, and help decide if they suit your requirements.

  • Overlay all the markers .
  • Transform an RMD160160 block .
  • The Channel establishment flow .
  • Sanitize a tx_broadcast response .
  • Convert an invoice to ln address .
  • Select the wallet storage .
  • Create the receive tab layout .
  • Signs a transaction .
  • Get the details of the blockchain .
  • Return sweep information for a given channel .

electrum Key Features

Electrum Bitcoin Wallet

Expect -re not failing on eof

copy iconCopydownload iconDownload
expect {
  -re {([a-z]+ ?){24}} {
    test_ok true
  }
  eof {
    test_failed
  }
}

How Create Bitcoin wallet from a private key works?

copy iconCopydownload iconDownload
from cryptotools.BTC import Xprv
private = Xprv.from_seed("adfadaaaaaaaaaaaaaaaaaaaaaaaaafa")
# private = Xprv.from_mnemonic(...)
print(private.encode()) 
# 'xprv9s21ZrQH143K3RYhJCmDhwpJ4cpXxj7JfUSChYD9rwyZqkTtKb5Y1sc3SzcwgFZ6EiMC38EdQJUKSmc2oni98m3XA8dpnXaMRd8GEQxW6KA'

from cryptotools.BTC import generate_keypair
private, public = generate_keypair()

wif = private.wif(compressed=True)
print(wif) 
# 'KwcQEum4qYHcfFyWYKsQoRccgnPhhAx1n4b6LfzZVcNA5Eqt8AXP'
-----------------------
from cryptotools.BTC import Xprv
private = Xprv.from_seed("adfadaaaaaaaaaaaaaaaaaaaaaaaaafa")
# private = Xprv.from_mnemonic(...)
print(private.encode()) 
# 'xprv9s21ZrQH143K3RYhJCmDhwpJ4cpXxj7JfUSChYD9rwyZqkTtKb5Y1sc3SzcwgFZ6EiMC38EdQJUKSmc2oni98m3XA8dpnXaMRd8GEQxW6KA'

from cryptotools.BTC import generate_keypair
private, public = generate_keypair()

wif = private.wif(compressed=True)
print(wif) 
# 'KwcQEum4qYHcfFyWYKsQoRccgnPhhAx1n4b6LfzZVcNA5Eqt8AXP'

Bitcoin SegWit Wallet Address Calculation

copy iconCopydownload iconDownload
std::string getWalletAddress(const std::vector<uint8_t>& public_key, uint8_t id, bool is_p2sh)
{
    std::vector<uint8_t> addr_hash = SHA256_Hash(key);
    std::vector<uint8_t> addr_ripe = RipeMD160_Hash(addr_hash);
    if (is_p2sh)
    {
        addr_ripe.insert(addr_ripe.begin(), { 0x00, static_cast<uint8_t>(addr_ripe.size()) });
        addr_hash = SHA256_Hash(addr_ripe);
        addr_ripe = RipeMD160_Hash(addr_ripe);
    }
    addr_ripe.insert(addr_ripe.begin(), id);
    addr_hash = SHA256_Hash(SHA256_Hash(addr_ripe));
    addr_ripe.insert(addr_ripe.end(), addr_hash.begin(), addr_hash.begin() + sizeof(uint32_t));
    return base58Encode(addr_ripe);
}

// This will now work for both p2pkh addresses and p2wpkh-p2sh addresses

getWalletAddress(public_key, LTC_TESTNET, true);  // Produces: QYyWqgyWSm1AJWph32GnyY7eamG1wUDruk

Community Discussions

Trending Discussions on electrum
  • weird numbers in http response body during python socket programming
  • Expect -re not failing on eof
  • How Create Bitcoin wallet from a private key works?
  • Why am I getting CrashLoopBackOff from my docker image and the logs don't say what is wrong?
  • Bitcoin SegWit Wallet Address Calculation
  • Setting fees with paytomany [Electrum JSON-RPC]
Trending Discussions on electrum

QUESTION

weird numbers in http response body during python socket programming

Asked 2021-Jun-29 at 18:19

I am trying to send a get request to an api and get a response. My code is working fine but there is a problem with body of response, I am getting numbers before and after body of the response. Here is my code:

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.settimeout(2)
s = ssl.create_default_context().wrap_socket(s, server_hostname='randomuser.me')
s.connect(("randomuser.me", 443))
request = "GET /api/ HTTP/1.1\r\nHost: randomuser.me\r\n\r\n"
s.sendall(request.encode())

result = ""
while True:
    try:
        data = s.recv(1024)
        result = result + data.decode()
    except: #timeout
        break
    
s.close()
print(result) 

And here is my response:

HTTP/1.1 200 OK
Date: Tue, 29 Jun 2021 16:38:41 GMT
Content-Type: application/json; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
x-powered-by: Express
access-control-allow-origin: *
cache-control: no-cache
etag: W/"4a0-ZHCP6s4BF3NGwp45RPw24DhbGhw"
vary: Accept-Encoding
CF-Cache-Status: DYNAMIC
cf-request-id: 0afa3c3163000038cf7c3e4000000001
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v2?s=fEMqmLbj7EmU8DoZiHR5%2B1uSK29U8clj2yhSA%2FQH%2BhpYdWJzWEGo3ua1Kgh6oHuloggqeZCDgbHTifYw%2FVYiRzgcV8HaIN%2FRHAvjwG1sg%2FH8vrZ5YODwmHwryw%3D%3D"}],"group":"cf-nel","max_age":604800}
NEL: {"report_to":"cf-nel","max_age":604800}
Server: cloudflare
CF-RAY: 6670962f0de338cf-ATH
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400, h3=":443"; ma=86400

4a0
{"results":[{"gender":"female","name":{"title":"Miss","first":"Sophia","last":"Bourgeois"},"location":{"street":{"number":6699,"name":"Rue du Village"},"city":"Orléans","state":"Morbihan","country":"France","postcode":70073,"coordinates":{"latitude":"-2.1449","longitude":"0.6974"},"timezone":{"offset":"-3:00","description":"Brazil, Buenos Aires, Georgetown"}},"email":"sophia.bourgeois@example.com","login":{"uuid":"e145adab-a136-4ef3-b9db-c5bdc3a32a75","username":"sadrabbit387","password":"smooth","salt":"gnz57npL","md5":"81b0e38cc190d63f6ecd275491a1feea","sha1":"b91e19770f3658500d37c11a5bd848c8baafe88e","sha256":"0a8ef17533b064723be96bee5d6338ded189e3184d5b9bdfc15af8243a3b8481"},"dob":{"date":"1984-02-26T02:12:49.648Z","age":37},"registered":{"date":"2016-09-21T08:57:41.436Z","age":5},"phone":"02-62-16-43-97","cell":"06-17-01-09-53","id":{"name":"INSEE","value":"2NNaN80745407 74"},"picture":{"large":"https://randomuser.me/api/portraits/women/76.jpg","medium":"https://randomuser.me/api/portraits/med/women/76.jpg","thumbnail":"https://randomuser.me/api/portraits/thumb/women/76.jpg"},"nat":"FR"}],"info":{"seed":"ad0ba79d620ddb6d","results":1,"page":1,"version":"1.3"}}
0 

Everything is ok except that number before the body and that 0 after the body. I am missing something but what? What are they? I am new to raw http response.

I also checked postman and curl and their response are fine, there are not that kind of numbers in their response. It is not about the api as well, because I am getting '7ac5' kind of numbers in some different apis. However, some apis are working great. I dont get it and I want to learn it.

Edit:

Another example with different api;

HTTP/1.1 200 OK
Date: Tue, 29 Jun 2021 17:06:59 GMT
Content-Type: application/json
Transfer-Encoding: chunked
Connection: keep-alive
Access-Control-Allow-Origin: *
Cache-Control: max-age=100, public
CF-Cache-Status: DYNAMIC
cf-request-id: 0afa5616e5000054823eb60000000001
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Server: cloudflare
CF-RAY: 6670bf9e3c545482-IST
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400, h3=":443"; ma=86400

bcd
{"id":"btc-bitcoin","name":"Bitcoin","symbol":"BTC","rank":1,"is_new":false,"is_active":true,"type":"coin","tags":[{"id":"segwit","name":"Segwit","coin_counter":10,"ico_counter":0},{"id":"cryptocurrency","name":"Cryptocurrency","coin_counter":782,"ico_counter":40},{"id":"proof-of-work","name":"Proof Of Work","coin_counter":425,"ico_counter":15},{"id":"payments","name":"Payments","coin_counter":185,"ico_counter":39},{"id":"sha256","name":"Sha256","coin_counter":45,"ico_counter":1},{"id":"mining","name":"Mining","coin_counter":300,"ico_counter":18},{"id":"lightning-network","name":"Lightning Network","coin_counter":7,"ico_counter":0}],"team":[{"id":"satoshi-nakamoto","name":"Satoshi Nakamoto","position":"Founder"},{"id":"wladimir-j-van-der-laan","name":"Wladimir J. van der Laan","position":"Blockchain Developer"},{"id":"jonas-schnelli","name":"Jonas Schnelli","position":"Blockchain Developer"},{"id":"marco-falke","name":"Marco Falke","position":"Blockchain Developer"}],"description":"Bitcoin is a cryptocurrency and worldwide payment system. It is the first decentralized digital currency, as the system works without a central bank or single administrator.","message":"","open_source":true,"started_at":"2009-01-03T00:00:00Z","development_status":"Working product","hardware_wallet":true,"proof_type":"Proof of Work","org_structure":"Decentralized","hash_algorithm":"SHA256","links":{"explorer":["https://blockchair.com/bitcoin","http://blockchain.com/explorer","https://blockstream.info/","https://live.blockcypher.com/btc/","https://btc.cryptoid.info/btc/"],"facebook":["https://www.facebook.com/bitcoins/"],"reddit":["https://www.reddit.com/r/bitcoin"],"source_code":["https://github.com/bitcoin/bitcoin"],"website":["https://bitcoin.org/"],"youtube":["https://www.youtube.com/watch?v=Gc2en3nHxA4\u0026"]},"links_extended":[{"url":"https://bitcoin.org/en/blog","type":"blog"},{"url":"https://blockchair.com/bitcoin","type":"explorer"},{"url":"http://blockchain.com/explorer","type":"explorer"},{"url":"https://blockstream.info/","type":"explorer"},{"url":"https://live.blockcypher.com/btc/","type":"explorer"},{"url":"https://btc.cryptoid.info/btc/","type":"explorer"},{"url":"https://www.facebook.com/bitcoins/","type":"facebook"},{"url":"https://bitcointalk.org","type":"message_board"},{"url":"https://www.reddit.com/r/bitcoin","type":"reddit","stats":{"subscribers":3145581}},{"url":"https://github.com/bitcoin/bitcoin","type":"source_code","stats":{"contributors":975,"stars":55314}},{"url":"https://twitter.com/bitcoincoreorg","type":"twitter","stats":{"followers":126039}},{"url":"https://electrum.org/#download","type":"wallet"},{"url":"https://bitcoin.org/","type":"website"},{"url":"https://www.youtube.com/watch?v=Gc2en3nHxA4\u0026","type":"youtube"}],"whitepaper":{"link":"https://static.coinpaprika.com/storage/cdn/whitepapers/215.pdf","thumbnail":"https://static.coinpaprika.com/storage/cdn/whitepapers/217.jpg"},"first_data_at":"2010-07-17T00:00:00Z","last_data_at":"2021-06-29T17:05:00Z"}
0

ANSWER

Answered 2021-Jun-29 at 18:19

I am missing something but what?

You are not taking into account that these responses are using the chunked transfer encoding format (via the Transfer-Encoding: chunked header) to send the body data in chunks instead of a single byte stream, as you are expecting. See RFC 2616 Section 3.6.1 and RFC 7230 Section 4.1 for more details on the chunked format.

What are they?

The numbers you are referring to are chunk size indicators.

  • In the 1st response shown, there is a single chunk of data whose byte size is 4a0 (0x4A0 hex, 1184 decimal), followed by a terminating chunk whose byte size is 0.

  • In the 2nd response shown, there is a single chunk of data whose byte size is bcd (0xBCD hex, 3021 decimal), followed by a terminating chunk whose byte size is 0.

The 0-length chunk ends the body data (there is no Content-Length or Connection: close header present to end the responses otherwise).

You won't be able to use a simple recv() loop to read chunked bodies. You have to detect the chunked header, and if present then read and parse each chunk individually. Read a chunk size, skip up to the following CRLF, read the specified number of bytes, skip up to the following CRLF. Repeat until a 0-length chunk is reached. Then read a set of trailing HTTP headers that may follow the chunks, overwriting any headers that you read before the body.

See the pseudo code I present in this answer and this answer.

Source https://stackoverflow.com/questions/68182835

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

The Python console in Electrum through 2.9.4 and 3.x through 3.0.5 supports arbitrary Python code without considering (1) social-engineering attacks in which a user pastes code that they do not understand and (2) code pasted by a physically proximate attacker at an unattended workstation, which makes it easier for attackers to steal Bitcoin via hook code that runs at a later time when the wallet password has been entered, a different vulnerability than CVE-2018-1000022.

Install electrum

You can download it from GitHub.
You can use electrum like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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