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POHow properly create oauth signature base string?
 

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  1. POHow properly create oauth signature base string?
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    <p>I want to implement OAuth 1.0 protocol in order to work with <a href="http://www.copy.com" rel="nofollow">COPY</a>. But when i implemented OAuth protocol in C++ in order to get Request Token and sent that request to copy it's return that signature is invalid and i can't figure out what's wrong in my signature. Here are all parameters that i generate by my program:</p> <pre><code>oauth_nonce=xoviybpokqnxdwlnkeoorawfijgezr oauth_timestamp=1381745375 oauth_callback=http%3A%2F%2Fcopy-oauth.local%2Fget_access_token.php oauth_signature_method=HMAC-SHA1 </code></pre> <p>This is base string that i used in order to generate token:</p> <blockquote> <p>GET&amp;https%3A%2F%2Fapi.copy.com%2Foauth%2Frequest&amp;oauth_consumer_key%3D[my 32 symbols key]%26oauth_nonce%3Dxoviybpokqnxdwlnkeoorawfijgezr%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1381745375%26oauth_tokey%3D</p> </blockquote> <p>It's key for generating signature:</p> <blockquote> <p>[My consumer secret, 48 symbols]&amp;</p> </blockquote> <p>Here is signature that i received after base64 and percent encoded:</p> <blockquote> <p>lNaaOaWyGtkJWj%2BVLjLlKTVGYL0%3D</p> </blockquote> <p>And the last thing is sending all parameters to server. For this purpose i use libcurl:</p> <pre><code>char * abc="https://api.copy.com/oauth/request/?oauth_callback=http%3A%2F%2Fcopy-oauth.local%2Fget_access_token.php&amp;oauth_consumer_key=[my 32 symbols key]&amp;oauth_signature_method=HMAC-SHA1&amp;oauth_timestamp=1381745375&amp;oauth_nonce=xoviybpokqnxdwlnkeoorawfijgezr&amp;oauth_signature=lNaaOaWyGtkJWj%2BVLjLlKTVGYL0%3D"; CURL *curl; CURLcode res; curl_global_init(CURL_GLOBAL_DEFAULT); curl = curl_easy_init(); if(curl) { curl_easy_setopt (curl, CURLOPT_SSL_VERIFYPEER, TRUE); curl_easy_setopt(curl, CURLOPT_CAINFO, "C:\\a\\a\\a\\cacert.pem"); curl_easy_setopt(curl, CURLOPT_URL, abc); res = curl_easy_perform(curl); /* Check for errors */ if(res != CURLE_OK) fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res)); /* always cleanup */ curl_easy_cleanup(curl); } curl_global_cleanup(); </code></pre> <p>Then my console will output:</p> <blockquote> <p>oauth_error_message=oauth_problem%3Dsignature_invalid%26debug_sbs...</p> </blockquote> <p>What's wrong in my implementation?</p>
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