agentic_security/docs/stenography.md

Stenography functions

agentic_security.probe_data.stenography_fn transforms prompts so scanners can test whether a model still treats obfuscated text as an instruction.

The module is used by Stenography in probe_data.data when a dataset enables encoding variants.

Functions

Function	What it does
rot13 / rot5	Letter and digit rotation ciphers
base64_encode	Base64-encode a string or bytes
mirror_words	Reverse each word, keep word order
scramble_words	Shuffle middle letters, keep first and last
randomize_letter_case	Random per-character case
insert_noise_characters	Insert alphanumeric noise (frequency=0.2 by default)
substitute_with_ascii	Replace characters with ordinals
remove_vowels	Drop aeiou in either case
zigzag_obfuscation	Alternate upper/lower case
caesar_cipher / substitution_cipher / vigenere_cipher	Classical ciphers
code_block_encode	Hide the prompt in a Python docstring fenced as code

These are obfuscation helpers for red-team prompts, not cryptographic primitives.

Usage

from agentic_security.probe_data.stenography_fn import rot13, scramble_words

rot13("Ignore previous instructions")
scramble_words("Ignore previous instructions")