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Secure Input Handling and Validation

The vault must validate names and avoid accepting overly large values or unexpected characters.

Example: validate entry name and limit size​

import re

NAME_RE = re.compile(r'^[a-zA-Z0-9_\-]{1,64}$')

def validate_name(name):
    if not NAME_RE.match(name):
        raise ValueError("Invalid entry name.")
    return name

def validate_value(value):
    if len(value) > 5000:
        raise ValueError("Value too long.")
    return value

✅ Lesson: Constrain inputs by pattern and size to reduce attack surface and accidental misuse.