How should custom settings be used for secure token storage?
Answer
To securely store tokens using custom settings, follow these best practices:
1. **Use Protected Custom Settings**: Create a custom settings object with visibility set to "Protected" to ensure sensitive data is not accessible to unauthorized users or external packages.
2. **Replace References**: Update all references in your managed package to use the new protected custom settings object.
3. **Encrypt Sensitive Data**: If required, encrypt sensitive data and store the encryption key securely within the protected custom settings.
4. **Avoid GUI Interfaces**: Protected custom settings lack built-in GUI interfaces for management, so include secure code in your application to update these settings.
5. **Use the Transient Keyword**: Prevent sensitive data from being stored in the viewstate by using the `transient` keyword.
These steps help ensure secure token storage and protect sensitive information.
How should custom settings be used for secure token storage?
Recommended Answer Update
To securely store tokens using custom settings, follow these best practices:
1. **Use Protected Custom Settings**: Create a custom settings object with visibility set to "Protected" to ensure sensitive data isn't accessible to unauthorized users or external packages.
2. **Replace References**: Update all references in your managed package to use the new protected custom settings object.
3. **Encrypt Sensitive Data**: If required, encrypt sensitive data and store the encryption key securely within the protected custom settings.
4. **Avoid GUI Interfaces**: Protected custom settings lack built-in GUI interfaces for management, so include secure code in your application to update these settings.
5. **Use the Transient Keyword**: Prevent sensitive data from being stored in the viewstate by using the `transient` keyword.
These steps help ensure secure token storage and protect sensitive information.
Reasoning
The FAQ content is generally sound and follows security best practices. I made minor improvements to enhance clarity and readability: changed 'is not accessible' to 'isn't accessible' for a more conversational tone per the brand guidelines. The technical content aligns well with multiple security rules that address token and credential management.
Regarding security rules selection:
- ApexSuggestUsingNamedCred: Directly relates to the FAQ's focus on secure token storage, as this rule suggests using Named Credentials instead of hardcoded tokens
- AvoidHardcodedCredentialsInFieldDecls: Relates to point #1 about using Protected Custom Settings to avoid exposing sensitive data in field declarations
- AvoidHardcodedCredentialsInVarDecls: Connects to the overall guidance about secure token storage and avoiding hardcoded credentials in variable declarations
- AvoidHardcodedCredentialsInVarAssign: Aligns with the FAQ's guidance on secure token management and avoiding hardcoded credentials in assignments
- ProtectSensitiveData: Directly applicable to the entire FAQ content which focuses on protecting sensitive token information using custom settings
- ApexBadCrypto: Relates to point #3 about encrypting sensitive data, as this rule addresses proper cryptographic practices