This tool performs local CAST5 (CAST-128) encryption/decryption with multiple modes and formats, useful for legacy protocol compatibility and data workflows.
Key Features
- CAST5 support (40-128-bit keys)
- CBC, ECB, CFB, OFB, CTR, and RAW modes
- Multiple input/output formats and paddings
- Key and IV validation hints
Steps
- Select encrypt or decrypt mode.
- Configure cipher mode, padding, and key settings.
- Enter key, IV, and text content.
- Process and copy output.
Notes
- CAST5 uses 64-bit blocks and is typically not first choice for new long-term systems.
- Keep mode, padding, and encoding identical for interoperability.
- Avoid weak keys and insecure configurations.