“Acrostic” Encryption: Stress‐Manipulation on Information Display

Abstract

Polymers are ideal materials for information printing and storage and encryption through multiple channels. In this study, the visible color, fluorescent, and stress-color are combined to print information. Stress-color is achieved using an acid-tunable dynamic reaction between a β-diketone and an amine group via the light-induced transformation of spiropyran (SP), which also directly prints the visible color information. The color and fluorescent patterns are stable via the reaction between SP and amine released from a dynamic enaminone structure. By achieving the stress-color information coding, the data is further encrypted in an "acrostic" form by programmatically coding the information at several stages. The pattern or information in stress-color is closely related to the decoding strain, whereas the fluorescent and color patterns display all the information written in various strains. As a result, the secret information is hidden among public data, resulting in acrostic encryption.

Electron-beam writing of a relaxor ferroelectric polymer for multiplexing information storage and encryption

“…With the arrival of the information explosion era, people are facing a huge risk of data leakage and falsification in the process of information transmission. 1–3 Thus, memory devices with high density and high-level security have attracted tremendous attention in fields ranging from commercial and military activities to daily life. Traditional single-dimensional memory devices ( e.g.…”

A Dual‐Responsive Liquid Crystal Elastomer for Multi‐Level Encryption and Transient Information Display

“…With the booming of the Internet of Things (IoT) and 5G wireless communications technology, information security becomes more and more important, promoting the development of responsive materials and technologies for encryption, anti-counterfeiting, and secure storage of information. In recent years, tremendous efforts have been made to develop advanced anti-counterfeiting materials and corresponding encryption techniques, including photonic crystals, [1][2][3][4][5] structural-color materials, [6][7][8] rewritable materials, [9][10][11] wrinkles, [12][13][14] watermarks, [15] holograms, [16] and fluorescent/phosphorescent imaging, [17][18][19][20] etc, to avoid the threat of false information and information leakage. By combining multiple anti-counterfeiting techniques or multiple stimuli (such as light, temperature, pH, and moisture) that trigger decryption, the information is thus made more difficult to copy, enhancing the security level.…”

A Dual‐Responsive Liquid Crystal Elastomer for Multi‐Level Encryption and Transient Information Display

“…With the booming of the Internet of Things (IoT) and 5G wireless communications technology, information security becomes more and more important, promoting the development of responsive materials and technologies for encryption, anti-counterfeiting, and secure storage of information. In recent years, tremendous efforts have been made to develop advanced anti-counterfeiting materials and corresponding encryption techniques, including photonic crystals, [1][2][3][4][5] structural-color materials, [6][7][8] rewritable materials, [9][10][11] wrinkles, [12][13][14] watermarks, [15] holograms, [16] and fluorescent/phosphorescent imaging, [17][18][19][20] etc, to avoid the threat of false information and information leakage. By combining multiple anti-counterfeiting techniques or multiple stimuli (such as light, temperature, pH, and moisture) that trigger decryption, the information is thus made more difficult to copy, enhancing the security level.…”