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XPX: Generalized Tweakable Even-Mansour with Improved Security Guarantees
XPX XEX Even-Mansour
2015/12/30
We present XPX, a tweakable blockcipher based on a single permutation P.
On input of a tweak (t11, t12, t21, t22) ∈ T and a message m, it outputs ciphertext c =
P(m⊕∆1)⊕∆2, where ∆...
Optical investigations of the chemical pressurized EuFe2(As1-xPx)2: an s-wave superconductor with strong interband interaction
Optical investigations s-wave superconductor interband interaction
2010/11/18
Superconducting EuFe2(As0.82P0.18)2 single crystals are investigated by infrared spectroscopy in a wide frequency range. Below Tc = 28 K a superconducting gap forms at 20 = 9.5 meV = 3.8kBTc causing ...
用赝势微扰法计算某些半导体的能带结构(用于GaAs,GaP和Ga[As1-xPx]合金)
2007/12/12
用赝势微扰法计算了GaAs,GaP和Ga[As1-xPx]合金的能带。赝势选择的原则是使计算所得直接能隙和间接能隙与实验值相符合。计算结果表明,不但能带次序准确,而且与室温下的实验值符合得很好。基于由GaAs到GaP晶格常数和赝势是线性变化的假设,计算了GaP含量为20％,50％和80％时Ga[As1-xPx]合金的能带。当GaP含量为41％时,直接能隙和间接能隙相等,这一数值刚好是Spitzer...