59 lines
2.1 KiB
Python
59 lines
2.1 KiB
Python
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import hashlib
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import secrets
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from datetime import datetime, timedelta
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from typing import Optional, Any, Union
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import jwt
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from app.core.config import settings
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def get_password_hash(password: str) -> str:
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"""
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Hashes a password with PBKDF2-HMAC-SHA256 using Python's standard library.
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Requires NO C compilers or external dependencies.
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"""
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salt = secrets.token_hex(16)
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key = hashlib.pbkdf2_hmac("sha256", password.encode("utf-8"), salt.encode("utf-8"), 100000)
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return f"pbkdf2:sha256:100000${salt}${key.hex()}"
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def verify_password(plain_password: str, hashed_password: str) -> bool:
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"""Verifies a plain password against the stored hash."""
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if not hashed_password:
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return False
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if "$" not in hashed_password:
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# Fallback comparison for plain text
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return plain_password == hashed_password
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try:
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parts = hashed_password.split("$")
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if len(parts) == 3 and parts[0].startswith("pbkdf2:"):
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_, salt, key_hex = parts
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check_key = hashlib.pbkdf2_hmac("sha256", plain_password.encode("utf-8"), salt.encode("utf-8"), 100000)
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return secrets.compare_digest(check_key.hex(), key_hex)
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return plain_password == hashed_password
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except Exception:
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return False
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def create_access_token(subject: Union[str, Any], expires_delta: Optional[timedelta] = None, extra_claims: Optional[dict] = None) -> str:
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"""Creates a signed JWT token."""
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if expires_delta:
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expire = datetime.utcnow() + expires_delta
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else:
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expire = datetime.utcnow() + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
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to_encode = {
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"exp": expire,
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"sub": str(subject),
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"user_id": subject
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}
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if extra_claims:
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to_encode.update(extra_claims)
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encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
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return encoded_jwt
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def decode_access_token(token: str) -> Optional[dict]:
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"""Decodes a JWT token."""
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try:
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payload = jwt.decode(token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM])
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return payload
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except Exception:
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return None
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