Table 3 Comparison of features offered by different secure deletion approaches for HDDs-based storage systems
From: Ensuring data confidentiality via plausibly deniable encryption and secure deletion – a survey
Scheme | Method | Layer | Deletion granularity |
|---|---|---|---|
Degaussers (Kissel et al. 2006) | Degaussing | Physical medium | The entire |
storage medium | |||
Overwriting-based | Controller | The entire | |
storage medium | |||
Reardon et al. (Reardon et al. 2013) | Encryption-based | Block device | Single file |
Bauer et al. (Bauer and Priyantha 2001) | Overwriting-based | File system (EXT2) | Single file |
Purgefs (Joukov and Zadok 2005) | Overwriting-based | File system (EXT2) | Single file |
Joukov et al. (Joukov et al. 2006) | Overwriting-based | File system (EXT3) | Single file |
Peterson et al. (Peterson et al. 2005) | Encryption-based | File system | Single file |
File overwriting tools (Jagdmann 2015; Durak 2006) | Overwriting-based | Application | Single file |
Gracewipe (Zhao and Mannan 2015) | Encryption-based | Application | The entire |
storage medium | |||
Stahlberg et al. (Stahlberg et al. 2007) | Based on overwriting | Application (for database) | Single entry/record |
and SQLite (SQLite: Pragma statements 2017) | and encryption |