3 f@sdZddlZddlmZddlZddlZddl Z e dde dDZ e dde dDZ dZGdd d Zd d ZGd d d e jZejreZdddZdS)zxHMAC (Keyed-Hashing for Message Authentication) Python module. Implements the HMAC algorithm as described by RFC 2104. N)_compare_digestccs|]}|dAVqdS)\N).0xrr/usr/lib64/python3.6/hmac.py srccs|]}|dAVqdS)6Nr)rrrrrr sc@sReZdZdZdZdddZeddZdd Zd d Z d d Z ddZ ddZ dS)HMACz~RFC 2104 HMAC class. Also complies with RFC 4231. This supports the API for Cryptographic Hash Functions (PEP 247). @Ncsftjrtdt|ttfs0tdt|jdkrLt j dt dt j tr\|_n,ttrxdfdd |_ndfd d |_|j|_|j|_|jj|_t|jd r|jj}|d krt j d ||jftd|j}nt j d|jtd|j}||_t||kr|j|j}|j|d}|jj|jt|jj|jt|dk rb|j|dS)a1Create a new HMAC object. key: key for the keyed hash object. msg: Initial input for the hash, if provided. digestmod: A module supporting PEP 247. *OR* A hashlib constructor returning a new hash object. *OR* A hash name suitable for hashlib.new(). Defaults to hashlib.md5. Implicit default to hashlib.md5 is deprecated and will be removed in Python 3.6. Note: key and msg must be a bytes or bytearray objects. z*This class is not available in FIPS mode. zUse hmac.new().z,key: expected bytes or bytearray, but got %rNz;szHMAC.__init__..cs j|S)N)r)r)rrrr=s block_sizez:block_size of %d seems too small; using our default of %d.zszHMAC.hexdigest)NN) r __module__ __qualname____doc__r*r6propertyr7r/r:r=r-r>rrrrr s A    r cCsX|dkrtdt|tr"|jSt|r2|d}t|tjsFtd|jjj ddS)Nz.'digestmod' argument is mandatory in FIPS moderz6Only OpenSSL hashlib hashes are accepted in FIPS mode._-) rrr%lowerr#rZHASHrr7replace)rrrr_get_openssl_names  rGc@seZdZdddZdS) HMAC_opensslNcCsLt|ttfs tdt|jt|}tjj |||d}|rH|j ||S)Nz,key: expected bytes or bytearray, but got %r)r) rrrrrrrG _hmacopensslr r9r/)clsr4r5rr7resultrrrr9s zHMAC_openssl.__new__)NN)rr?r@r9rrrrrHsrHcCs t|||S)aVCreate a new hashing object and return it. key: The starting key for the hash. msg: if available, will immediately be hashed into the object's starting state. You can now feed arbitrary strings into the object using its update() method, and can ask for the hash value at any time by calling its digest() method. )r )r4r5rrrrrs r)NN)rAwarningsr _operatorrZcompare_digestZhashlibrrrIrranger1r2r(r rGrHrrrrrrs z