def calculate_RFC2104_HMAC(data, _amazon_secret_access_key):
"""
Computes a RFC 2104 compliant HMAC Signature and then Base64
encodes it.
Module hashlib must be installed if Python < 2.5
<http://pypi.python.org/pypi/hashlib/20081119>
@param data: data to sign
@param _amazon_secret_access_key: your Amazon secret key
@type data: string
@type _amazon_secret_access_key: string. Empty if hashlib module not installed
"""
if not HASHLIB_IMPORTED:
try:
raise Exception("Module hashlib not installed. Please install it.")
except:
from invenio.ext.logging import register_exception
register_exception(stream="warning", alert_admin=True, subject="Cannot create AWS signature")
return ""
else:
if sys.version_info < (2, 5):
# compatibility mode for Python < 2.5 and hashlib
my_digest_algo = _MySHA256(sha256())
else:
my_digest_algo = sha256
return base64.encodestring(hmac.new(_amazon_secret_access_key, data, my_digest_algo).digest()).strip()
def calculate_RFC2104_HMAC(data, _amazon_secret_access_key):
"""
Computes a RFC 2104 compliant HMAC Signature and then Base64
encodes it.
Module hashlib must be installed if Python < 2.5
<http://pypi.python.org/pypi/hashlib/20081119>
@param data: data to sign
@param _amazon_secret_access_key: your Amazon secret key
@type data: string
@type _amazon_secret_access_key: string. Empty if hashlib module not installed
"""
if not HASHLIB_IMPORTED:
current_app.logger.warning("Module hashlib not installed. Please install it.")
return ""
else:
if sys.version_info < (2, 5):
# compatibility mode for Python < 2.5 and hashlib
my_digest_algo = _MySHA256(sha256())
else:
my_digest_algo = sha256
return base64.encodestring(hmac.new(_amazon_secret_access_key, data, my_digest_algo).digest()).strip()
def new(d=""):
return sha256()
