diff options
Diffstat (limited to 'oauthlib/oauth1/rfc5849/signature.py')
| -rw-r--r-- | oauthlib/oauth1/rfc5849/signature.py | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/oauthlib/oauth1/rfc5849/signature.py b/oauthlib/oauth1/rfc5849/signature.py index f899aca..a60bee2 100644 --- a/oauthlib/oauth1/rfc5849/signature.py +++ b/oauthlib/oauth1/rfc5849/signature.py @@ -661,6 +661,36 @@ def verify_hmac_sha1(request, client_secret=None, return match +def verify_hmac_sha256(request, client_secret=None, + resource_owner_secret=None): + """Verify a HMAC-SHA256 signature. + + Per `section 3.4`_ of the spec. + + .. _`section 3.4`: https://tools.ietf.org/html/rfc5849#section-3.4 + + To satisfy `RFC2616 section 5.2`_ item 1, the request argument's uri + attribute MUST be an absolute URI whose netloc part identifies the + origin server or gateway on which the resource resides. Any Host + item of the request argument's headers dict attribute will be + ignored. + + .. _`RFC2616 section 5.2`: https://tools.ietf.org/html/rfc2616#section-5.2 + + """ + norm_params = normalize_parameters(request.params) + bs_uri = base_string_uri(request.uri) + sig_base_str = signature_base_string(request.http_method, bs_uri, + norm_params) + signature = sign_hmac_sha256(sig_base_str, client_secret, + resource_owner_secret) + match = safe_string_equals(signature, request.signature) + if not match: + log.debug('Verify HMAC-SHA256 failed: signature base string: %s', + sig_base_str) + return match + + def _prepare_key_plus(alg, keystr): if isinstance(keystr, bytes): keystr = keystr.decode('utf-8') |