发明名称 |
Seed generating circuit, random number generating circuit, semiconductor integrated circuit, IC card, and information terminal equipment |
摘要 |
A random number generating circuit comprises: the seed generating circuit which generates a seed; and a pseudo random number circuit which generates pseudo random numbers based on the seed generated by the seed generating circuit. The seed generating circuit has: an oscillating circuit which oscillates continuously or intermittently, and which outputs a digital data sequence; a smoothing circuit which outputs time series data by controlling appearance frequencies of “0” and “1” in the digital data sequence outputted from the oscillating circuit; and a postprocessing circuit which generates one-bit seed by a computation using a plurality of bits included in the time series data. |
申请公布号 |
US8073889(B2) |
申请公布日期 |
2011.12.06 |
申请号 |
US20080153410 |
申请日期 |
2008.05.19 |
申请人 |
FUJITA SHINOBU;IWAMURA TETSURO;KABUSHIKI KAISHA TOSHIBA |
发明人 |
FUJITA SHINOBU;IWAMURA TETSURO |
分类号 |
G06F7/02;G06F7/58;G09C1/00;H03K3/84 |
主分类号 |
G06F7/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|