U |c@sdZddddddddgZd d lZd d lZd d lZd d lmZd d lmZeZ e j Z e j Z d dZ dZdddZdddZdddZd S)zGenerate cryptographically strong pseudo-random numbers suitable for managing secrets such as account authentication, tokens, and similar. See PEP 506 for more information. https://www.python.org/dev/peps/pep-0506/ choice randbelowrandbits SystemRandom token_bytes token_hex token_urlsafecompare_digestN)r)rcCs|dkrtdt|S)z(Return a random int in the range [0, n).r zUpper bound must be positive.) ValueError_sysrandZ _randbelow)Zexclusive_upper_boundr lib/python3.8/secrets.pyrs cCs|dkr t}t|S)zReturn a random byte string containing *nbytes* bytes. If *nbytes* is ``None`` or not supplied, a reasonable default is used. >>> token_bytes(16) #doctest:+SKIP b'\xebr\x17D*t\xae\xd4\xe3S\xb6\xe2\xebP1\x8b' N)DEFAULT_ENTROPYosurandomnbytesr r r r#s cCstt|dS)a"Return a random text string, in hexadecimal. The string has *nbytes* random bytes, each byte converted to two hex digits. If *nbytes* is ``None`` or not supplied, a reasonable default is used. >>> token_hex(16) #doctest:+SKIP 'f9bf78b9a18ce6d46a0cd2b0b86df9da' ascii)binasciiZhexlifyrdecoderr r r r1s cCst|}t|ddS)zReturn a random URL-safe text string, in Base64 encoding. The string has *nbytes* random bytes. If *nbytes* is ``None`` or not supplied, a reasonable default is used. >>> token_urlsafe(16) #doctest:+SKIP 'Drmhze6EPcv0fN_81Bj-nA' =r)rbase64Zurlsafe_b64encoderstripr)rtokr r r r>s )N)N)N)__doc____all__rrrZhmacrZrandomrr Z getrandbitsrrrrrrrr r r r s&