Swift Metadata Stripping
Protection ID: swift_stripping
Swift Metadata Stripping removes Swift type information, debug symbols, and metadata from your application binary. This eliminates a rich source of information that reverse engineers use to understand your application's type hierarchy and structure.
Configuration
{
"protections": {
"swift_stripping": true
}
}{
"protections": {
"swift_stripping": true
}
}How It Works
Swift applications contain extensive type metadata in the binary. This metadata includes type names, protocol conformances, generic type parameters, reflection information, and debug symbols. Tools like swift-demangle can decode this metadata to reconstruct the full type hierarchy of your application.
Swift Metadata Stripping removes this information from the binary. After protection, demangling tools cannot recover meaningful type names, and reflection-based analysis is significantly limited.
This complements Symbol Renaming by removing the Swift-specific metadata that would otherwise survive name obfuscation.
What Gets Stripped
| Metadata Type | Description |
|---|---|
| Swift symbols | Mangled Swift symbol names |
| Debug info | DWARF debug information |
| Type metadata | Swift type descriptors and conformance records |
When to Use
Swift Metadata Stripping is recommended for all Swift applications. Swift binaries contain significantly more metadata than Objective-C binaries, and this metadata provides a detailed map of your application's architecture. Stripping it is a low-cost, high-value protection that complements other obfuscation measures.
Related
- Symbol Renaming - Rename identifiers
- Class Encryption - Encrypt Objective-C metadata
- Protections Overview - All available protections