| 摘要 |
FIELD: information technology. ^ SUBSTANCE: during steganographic streaming of binary data, a transmitter generates a packet header ZR through concatenation of a synchronisation value Z and a random number R generated by the transmitter known to the receiver and the transmitter; ZR is encrypted using a symmetric encryption algorithm (SEA) based along-term encryption key K known to the receiver and the transmitter; a session encryption key Q is generated based on R, and gamma elements are generated using the SEA in gamma mode on Q; the generated gamma is superimposed bit-by-bit onto the hidden data (packet body) via modulo 2 addition; the final part of the packet is generated, which consists of a value known to the receiver and transmitter; subsequent gamma elements are superimposed bit-by-bit onto the final part of the packet; the full packet of encrypted binary data is assembled in the following order: final part of the packet, packet body and packet header; bits are selected from the full packet from the side of the least significant bit. ^ EFFECT: high resistance to steganalysis. ^ 3 cl, 3 dwg |
