digest.py 文件源码

def supported_by_hashlib_pbkdf2(self):
        """helper to detect if hash is supported by hashlib.pbkdf2_hmac()"""
        if not _stdlib_pbkdf2_hmac:
            return None
        try:
            _stdlib_pbkdf2_hmac(self.name, b"p", b"s", 1)
            return True
        except ValueError:
            # "unsupported hash type"
            return False

    #=========================================================================
    # eoc
    #=========================================================================

#=============================================================================
# hmac utils
#=============================================================================

#: translation tables used by compile_hmac()