发明名称 |
Key transport method, memory controller and memory storage apparatus |
摘要 |
A key transport method for transporting a key from a buffer memory to an encryption/decryption unit is provided. The method includes logically dividing bits of the key into key segments, wherein each of the key segments has a start position and a segment length. The method also includes setting a transmission length belonging to each of key segments based on the start positions and the segment lengths of the key segments; assigning a transmission bit stream belonging to each of the key segments from the bits of the key according to the start positions and the transmission lengths of the key segments; determining a transmission sequence; and sending the start position, the segment length and the transmission bit stream belonging to each of the key segments to the encryption/decryption unit from the buffer memory based on the transmission sequence. Accordingly, the method can transport the key safely. |
申请公布号 |
US8831229(B2) |
申请公布日期 |
2014.09.09 |
申请号 |
US201113309545 |
申请日期 |
2011.12.01 |
申请人 |
Phison Electronics Corp. |
发明人 |
Chang Ching-Wen |
分类号 |
H04L9/08 |
主分类号 |
H04L9/08 |
代理机构 |
Jianq Chyun IP Office |
代理人 |
Jianq Chyun IP Office |
主权项 |
1. A key transport method, for transporting a key stored in a buffer memory to an encryption/decryption unit through a data bus, the key transport method comprising:
logically dividing a plurality of bits of the key into a plurality of key segments, wherein each of the key segments has a start position and a segment length; setting a transmission length corresponding to each of the key segments according to the segment lengths of the key segments; assigning a transmission bit stream belonging to each of the key segments from the bits of the key according to the start positions and the transmission lengths of the key segments; determining a transmission sequence of the key segments; and sending the start position, the segment length and the transmission bit stream belonging to each of the key segments from the buffer memory to the encryption/decryption unit through the data bus according to the transmission sequence. |
地址 |
Miaoli TW |