Implementation HMAC-SHA1 in python
Pseudocodish:
def sign_request(): from hashlib import sha1 import hmac # key = b"CONSUMER_SECRET&" #If you dont have a token yet key = b"CONSUMER_SECRET&TOKEN_SECRET" # The Base String as specified here: raw = b"BASE_STRING" # as specified by OAuth hashed = hmac.new(key, raw, sha1) # The signature return hashed.digest().encode("base64").rstrip('\n')Signature errors usually reside in the base-string, make sure you understand this (as stated by the OAuth1.0 spec here: https://datatracker.ietf.org/doc/html/draft-hammer-oauth-10#section-3.4.1).
The following inputs are used to generate the Signature Base String:
HTTP Method (for example GET)
Path (for example http://photos.example.net/photos)
Parameters, alphabetically, such as (line breaks for readability):
file=vacation.jpg &oauth_consumer_key=dpf43f3p2l4k3l03 &oauth_nonce=kllo9940pd9333jh &oauth_signature_method=HMAC-SHA1 &oauth_timestamp=1191242096 &oauth_token=nnch734d00sl2jdk &oauth_version=1.0 &size=original
Concatenate and URL encode each part and it ends up as:
GET&http%3A%2F%2Fphotos.example.net%2Fphotos&file%3Dvacation.jpg%26 oauth_consumer_key%3Ddpf43f3p2l4k3l03%26oauth_nonce%3Dkllo9940pd9333jh%26 oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1191242096%26 oauth_token%3Dnnch734d00sl2jdk%26oauth_version%3D1.0%26size%3Doriginal
For the love of God, if you do ANYTHING with oauth, use the requests library for Python! I tried to implement HMAC-SHA1 using the hmac library in Python and it's a lot of headaches, trying to create the correct oauth base string and such. Just use requests and it's as simple as:
>>> import requests>>> from requests_oauthlib import OAuth1>>> url = 'https://api.twitter.com/1.1/account/verify_credentials.json'>>> auth = OAuth1('YOUR_APP_KEY', 'YOUR_APP_SECRET', 'USER_OAUTH_TOKEN', 'USER_OAUTH_TOKEN_SECRET')>>> requests.get(url, auth=auth)