Security in the speech cryptosystem based on blind sources separation
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| 008 | 210128e20151101xx s 000 0 eng | ||
| 024 | 7 | 0 | |a 10.1007/s11042-014-2147-3 |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s11042-014-2147-3 | ||
| 245 | 0 | 0 | |a Security in the speech cryptosystem based on blind sources separation |h [Elektronische Daten] |c [Ali Sadr, Raziyeh Okhovat] |
| 520 | 3 | |a In this paper, an appropriate selection for the key is investigated to enhance the security level of the speech cryptosystem based on blind sources separation. In fact, if an appropriate key is not selected, the cryptosystem may be attacked and therefore each confidential signal can be recovered only from the encrypted ones. Two important conditions which are studied in this paper are the number of quantized levels for a digital key and also non-sparsity in time-frequency domain. In the case of the first condition, simulation results show that with smaller coefficient for the confidential signal in comparison with the key, the number of quantized levels for the key should be more to guarantee the security. In the case of the second condition, an algorithm is proposed to recover the confidential signal only from the encrypted signal when the key is sparse in time-frequency domain. | |
| 540 | |a Springer Science+Business Media New York, 2014 | ||
| 690 | 7 | |a Blind sources separation (BSS) |2 nationallicence | |
| 690 | 7 | |a Cryptography |2 nationallicence | |
| 690 | 7 | |a Cryptanalysis |2 nationallicence | |
| 690 | 7 | |a Quantized levels |2 nationallicence | |
| 690 | 7 | |a Sparsity |2 nationallicence | |
| 690 | 7 | |a Time-frequency domain |2 nationallicence | |
| 700 | 1 | |a Sadr |D Ali |u Iran University of Science and Technology, Tehran, Iran |4 aut | |
| 700 | 1 | |a Okhovat |D Raziyeh |u Iran University of Science and Technology, Tehran, Iran |4 aut | |
| 773 | 0 | |t Multimedia Tools and Applications |d Springer US; http://www.springer-ny.com |g 74/21(2015-11-01), 9715-9728 |x 1380-7501 |q 74:21<9715 |1 2015 |2 74 |o 11042 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s11042-014-2147-3 |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s11042-014-2147-3 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Sadr |D Ali |u Iran University of Science and Technology, Tehran, Iran |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Okhovat |D Raziyeh |u Iran University of Science and Technology, Tehran, Iran |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Multimedia Tools and Applications |d Springer US; http://www.springer-ny.com |g 74/21(2015-11-01), 9715-9728 |x 1380-7501 |q 74:21<9715 |1 2015 |2 74 |o 11042 | ||