spsdk-iped 0.1.0

Fast C++ PRINCE cipher backend for SPSDK IPED encryption.

SPSDK IPED - PRINCE Cipher Backend

High-performance C++ PRINCE cipher backend for SPSDK's IPED (Inline PRINCE Encryption/Decryption) module.

Installation

Prerequisites

A C++ compiler is required to build the native PRINCE cipher library:

• Linux/macOS: GCC or Clang (install via your package manager)
• Windows: MS Build Tools (instructions)

Install from source

pip install -e path/to/spsdk_plugins/iped

Install from Bitbucket

pip install git+ssh://[e-mail]/spsdk/spsdk_plugins.git#subdirectory=iped

Usage with SPSDK

When this package is installed, SPSDK's IPED module automatically detects the C++ backend and uses it for ~100-150x faster PRINCE cipher operations compared to the built-in pure-Python fallback.

No additional configuration is needed — just install the package alongside SPSDK.

Standalone usage

from spsdk_iped import IPED

# CTR mode encryption
cipher = IPED(key=0x01, address=0x80003000, iv=0x79EAFAB3A72412A1)
encrypted = cipher.encrypt(plaintext_bytes)

# Decryption
cipher2 = IPED(key=0x01, address=0x80003000, iv=0x79EAFAB3A72412A1)
decrypted = cipher2.decrypt(encrypted)

Performance

The C++ backend provides approximately 100-150x speedup over the pure-Python implementation:

Backend	Throughput
Python (built-in)	~0.03 MB/s
C++ (this package)	~5 MB/s

License

BSD-3-Clause