| 摘要 |
1. In the device for encrypting and decrypting messages with a single-use key, the message is transferred from the first file-saving memory through the first symmetric encryption system to the extended memory. Simultaneously, the message is transferred from the first file-saving memory through the first file signature buffer, the file signature encryption buffer and the recipient's public key buffer to the extended memory. The bit sequence representing the file hashing value is transferred from the first file signature buffer to the first symmetric cryptographic system. On the receiving side, the message from the second file-saving memory is divided into two parts. One part is sent through the second symmetric cryptographic system and the second file signature buffer to a comparator. The other part of the message from the second file-saving memory is also sent through the recipient's private key buffer and the recipient's public key buffer to the comparator. Characterized in that: The message is transferred from the first file-saving memory (P1) through the first symmetric cryptographic system (KS1) to the extended memory (PS). Simultaneously, the message is transferred from the first file-saving memory (P1) through the first file signature buffer (A1), the first adder (Σ1), the file signature encryption buffer (B) and the recipient's public key buffer (C) to the extended memory (PS). The bit sequence representing the file hashing value is transferred from the first file signature buffer (A1) to the first symmetric cryptographic system (KS1). On the receiving side, the message from the second file-saving memory (A2) is divided into two parts. 2. The system subject to patent claim 1 - Characterized in that: The third adder (Σ3) is used as the comparator (Σ3). |
