Shift sq2/pow22523. Everything should be properly in FieldElement now.
This commit is contained in:
@@ -889,147 +889,146 @@ fn is_tests() {
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});
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}
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pub fn fe_sq2(h: &mut FieldElement, f: &FieldElement)
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{
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let f0 = f.value[0];
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let f1 = f.value[1];
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let f2 = f.value[2];
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let f3 = f.value[3];
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let f4 = f.value[4];
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let f5 = f.value[5];
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let f6 = f.value[6];
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let f7 = f.value[7];
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let f8 = f.value[8];
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let f9 = f.value[9];
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let f0_2 = 2 * f0;
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let f1_2 = 2 * f1;
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let f2_2 = 2 * f2;
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let f3_2 = 2 * f3;
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let f4_2 = 2 * f4;
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let f5_2 = 2 * f5;
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let f6_2 = 2 * f6;
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let f7_2 = 2 * f7;
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let f5_38 = 38 * f5; /* 1.959375*2^30 */
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let f6_19 = 19 * f6; /* 1.959375*2^30 */
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let f7_38 = 38 * f7; /* 1.959375*2^30 */
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let f8_19 = 19 * f8; /* 1.959375*2^30 */
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let f9_38 = 38 * f9; /* 1.959375*2^30 */
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let f0f0 = (f0 as i64) * (f0 as i64);
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let f0f1_2 = (f0_2 as i64) * (f1 as i64);
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let f0f2_2 = (f0_2 as i64) * (f2 as i64);
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let f0f3_2 = (f0_2 as i64) * (f3 as i64);
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let f0f4_2 = (f0_2 as i64) * (f4 as i64);
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let f0f5_2 = (f0_2 as i64) * (f5 as i64);
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let f0f6_2 = (f0_2 as i64) * (f6 as i64);
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let f0f7_2 = (f0_2 as i64) * (f7 as i64);
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let f0f8_2 = (f0_2 as i64) * (f8 as i64);
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let f0f9_2 = (f0_2 as i64) * (f9 as i64);
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let f1f1_2 = (f1_2 as i64) * (f1 as i64);
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let f1f2_2 = (f1_2 as i64) * (f2 as i64);
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let f1f3_4 = (f1_2 as i64) * (f3_2 as i64);
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let f1f4_2 = (f1_2 as i64) * (f4 as i64);
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let f1f5_4 = (f1_2 as i64) * (f5_2 as i64);
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let f1f6_2 = (f1_2 as i64) * (f6 as i64);
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let f1f7_4 = (f1_2 as i64) * (f7_2 as i64);
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let f1f8_2 = (f1_2 as i64) * (f8 as i64);
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let f1f9_76 = (f1_2 as i64) * (f9_38 as i64);
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let f2f2 = (f2 as i64) * (f2 as i64);
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let f2f3_2 = (f2_2 as i64) * (f3 as i64);
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let f2f4_2 = (f2_2 as i64) * (f4 as i64);
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let f2f5_2 = (f2_2 as i64) * (f5 as i64);
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let f2f6_2 = (f2_2 as i64) * (f6 as i64);
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let f2f7_2 = (f2_2 as i64) * (f7 as i64);
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let f2f8_38 = (f2_2 as i64) * (f8_19 as i64);
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let f2f9_38 = (f2 as i64) * (f9_38 as i64);
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let f3f3_2 = (f3_2 as i64) * (f3 as i64);
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let f3f4_2 = (f3_2 as i64) * (f4 as i64);
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let f3f5_4 = (f3_2 as i64) * (f5_2 as i64);
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let f3f6_2 = (f3_2 as i64) * (f6 as i64);
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let f3f7_76 = (f3_2 as i64) * (f7_38 as i64);
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let f3f8_38 = (f3_2 as i64) * (f8_19 as i64);
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let f3f9_76 = (f3_2 as i64) * (f9_38 as i64);
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let f4f4 = (f4 as i64) * (f4 as i64);
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let f4f5_2 = (f4_2 as i64) * (f5 as i64);
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let f4f6_38 = (f4_2 as i64) * (f6_19 as i64);
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let f4f7_38 = (f4 as i64) * (f7_38 as i64);
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let f4f8_38 = (f4_2 as i64) * (f8_19 as i64);
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let f4f9_38 = (f4 as i64) * (f9_38 as i64);
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let f5f5_38 = (f5 as i64) * (f5_38 as i64);
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let f5f6_38 = (f5_2 as i64) * (f6_19 as i64);
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let f5f7_76 = (f5_2 as i64) * (f7_38 as i64);
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let f5f8_38 = (f5_2 as i64) * (f8_19 as i64);
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let f5f9_76 = (f5_2 as i64) * (f9_38 as i64);
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let f6f6_19 = (f6 as i64) * (f6_19 as i64);
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let f6f7_38 = (f6 as i64) * (f7_38 as i64);
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let f6f8_38 = (f6_2 as i64) * (f8_19 as i64);
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let f6f9_38 = (f6 as i64) * (f9_38 as i64);
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let f7f7_38 = (f7 as i64) * (f7_38 as i64);
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let f7f8_38 = (f7_2 as i64) * (f8_19 as i64);
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let f7f9_76 = (f7_2 as i64) * (f9_38 as i64);
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let f8f8_19 = (f8 as i64) * (f8_19 as i64);
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let f8f9_38 = (f8 as i64) * (f9_38 as i64);
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let f9f9_38 = (f9 as i64) * (f9_38 as i64);
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let mut h0 = f0f0 +f1f9_76+f2f8_38+f3f7_76+f4f6_38+f5f5_38;
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let mut h1 = f0f1_2+f2f9_38+f3f8_38+f4f7_38+f5f6_38;
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let mut h2 = f0f2_2+f1f1_2 +f3f9_76+f4f8_38+f5f7_76+f6f6_19;
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let mut h3 = f0f3_2+f1f2_2 +f4f9_38+f5f8_38+f6f7_38;
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let mut h4 = f0f4_2+f1f3_4 +f2f2 +f5f9_76+f6f8_38+f7f7_38;
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let mut h5 = f0f5_2+f1f4_2 +f2f3_2 +f6f9_38+f7f8_38;
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let mut h6 = f0f6_2+f1f5_4 +f2f4_2 +f3f3_2 +f7f9_76+f8f8_19;
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let mut h7 = f0f7_2+f1f6_2 +f2f5_2 +f3f4_2 +f8f9_38;
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let mut h8 = f0f8_2+f1f7_4 +f2f6_2 +f3f5_4 +f4f4 +f9f9_38;
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let mut h9 = f0f9_2+f1f8_2 +f2f7_2 +f3f6_2 +f4f5_2;
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let mut carry0;
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let carry1;
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let carry2;
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let carry3;
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let mut carry4;
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let carry5;
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let carry6;
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let carry7;
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let carry8;
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let carry9;
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impl FieldElement {
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pub fn sq2(&self) -> FieldElement
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{
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let f0 = self.value[0];
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let f1 = self.value[1];
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let f2 = self.value[2];
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let f3 = self.value[3];
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let f4 = self.value[4];
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let f5 = self.value[5];
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let f6 = self.value[6];
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let f7 = self.value[7];
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let f8 = self.value[8];
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let f9 = self.value[9];
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let f0_2 = 2 * f0;
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let f1_2 = 2 * f1;
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let f2_2 = 2 * f2;
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let f3_2 = 2 * f3;
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let f4_2 = 2 * f4;
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let f5_2 = 2 * f5;
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let f6_2 = 2 * f6;
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let f7_2 = 2 * f7;
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let f5_38 = 38 * f5; /* 1.959375*2^30 */
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let f6_19 = 19 * f6; /* 1.959375*2^30 */
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let f7_38 = 38 * f7; /* 1.959375*2^30 */
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let f8_19 = 19 * f8; /* 1.959375*2^30 */
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let f9_38 = 38 * f9; /* 1.959375*2^30 */
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let f0f0 = (f0 as i64) * (f0 as i64);
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let f0f1_2 = (f0_2 as i64) * (f1 as i64);
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let f0f2_2 = (f0_2 as i64) * (f2 as i64);
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let f0f3_2 = (f0_2 as i64) * (f3 as i64);
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let f0f4_2 = (f0_2 as i64) * (f4 as i64);
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let f0f5_2 = (f0_2 as i64) * (f5 as i64);
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let f0f6_2 = (f0_2 as i64) * (f6 as i64);
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let f0f7_2 = (f0_2 as i64) * (f7 as i64);
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let f0f8_2 = (f0_2 as i64) * (f8 as i64);
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let f0f9_2 = (f0_2 as i64) * (f9 as i64);
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let f1f1_2 = (f1_2 as i64) * (f1 as i64);
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let f1f2_2 = (f1_2 as i64) * (f2 as i64);
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let f1f3_4 = (f1_2 as i64) * (f3_2 as i64);
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let f1f4_2 = (f1_2 as i64) * (f4 as i64);
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let f1f5_4 = (f1_2 as i64) * (f5_2 as i64);
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let f1f6_2 = (f1_2 as i64) * (f6 as i64);
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let f1f7_4 = (f1_2 as i64) * (f7_2 as i64);
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let f1f8_2 = (f1_2 as i64) * (f8 as i64);
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let f1f9_76 = (f1_2 as i64) * (f9_38 as i64);
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let f2f2 = (f2 as i64) * (f2 as i64);
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let f2f3_2 = (f2_2 as i64) * (f3 as i64);
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let f2f4_2 = (f2_2 as i64) * (f4 as i64);
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let f2f5_2 = (f2_2 as i64) * (f5 as i64);
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let f2f6_2 = (f2_2 as i64) * (f6 as i64);
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let f2f7_2 = (f2_2 as i64) * (f7 as i64);
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let f2f8_38 = (f2_2 as i64) * (f8_19 as i64);
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let f2f9_38 = (f2 as i64) * (f9_38 as i64);
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let f3f3_2 = (f3_2 as i64) * (f3 as i64);
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let f3f4_2 = (f3_2 as i64) * (f4 as i64);
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let f3f5_4 = (f3_2 as i64) * (f5_2 as i64);
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let f3f6_2 = (f3_2 as i64) * (f6 as i64);
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let f3f7_76 = (f3_2 as i64) * (f7_38 as i64);
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let f3f8_38 = (f3_2 as i64) * (f8_19 as i64);
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let f3f9_76 = (f3_2 as i64) * (f9_38 as i64);
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let f4f4 = (f4 as i64) * (f4 as i64);
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let f4f5_2 = (f4_2 as i64) * (f5 as i64);
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let f4f6_38 = (f4_2 as i64) * (f6_19 as i64);
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let f4f7_38 = (f4 as i64) * (f7_38 as i64);
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let f4f8_38 = (f4_2 as i64) * (f8_19 as i64);
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let f4f9_38 = (f4 as i64) * (f9_38 as i64);
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let f5f5_38 = (f5 as i64) * (f5_38 as i64);
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let f5f6_38 = (f5_2 as i64) * (f6_19 as i64);
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let f5f7_76 = (f5_2 as i64) * (f7_38 as i64);
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let f5f8_38 = (f5_2 as i64) * (f8_19 as i64);
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let f5f9_76 = (f5_2 as i64) * (f9_38 as i64);
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let f6f6_19 = (f6 as i64) * (f6_19 as i64);
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let f6f7_38 = (f6 as i64) * (f7_38 as i64);
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let f6f8_38 = (f6_2 as i64) * (f8_19 as i64);
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let f6f9_38 = (f6 as i64) * (f9_38 as i64);
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let f7f7_38 = (f7 as i64) * (f7_38 as i64);
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let f7f8_38 = (f7_2 as i64) * (f8_19 as i64);
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let f7f9_76 = (f7_2 as i64) * (f9_38 as i64);
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let f8f8_19 = (f8 as i64) * (f8_19 as i64);
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let f8f9_38 = (f8 as i64) * (f9_38 as i64);
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let f9f9_38 = (f9 as i64) * (f9_38 as i64);
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let mut h0 = f0f0 +f1f9_76+f2f8_38+f3f7_76+f4f6_38+f5f5_38;
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let mut h1 = f0f1_2+f2f9_38+f3f8_38+f4f7_38+f5f6_38;
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let mut h2 = f0f2_2+f1f1_2 +f3f9_76+f4f8_38+f5f7_76+f6f6_19;
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let mut h3 = f0f3_2+f1f2_2 +f4f9_38+f5f8_38+f6f7_38;
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let mut h4 = f0f4_2+f1f3_4 +f2f2 +f5f9_76+f6f8_38+f7f7_38;
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let mut h5 = f0f5_2+f1f4_2 +f2f3_2 +f6f9_38+f7f8_38;
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let mut h6 = f0f6_2+f1f5_4 +f2f4_2 +f3f3_2 +f7f9_76+f8f8_19;
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let mut h7 = f0f7_2+f1f6_2 +f2f5_2 +f3f4_2 +f8f9_38;
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let mut h8 = f0f8_2+f1f7_4 +f2f6_2 +f3f5_4 +f4f4 +f9f9_38;
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let mut h9 = f0f9_2+f1f8_2 +f2f7_2 +f3f6_2 +f4f5_2;
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let mut carry0;
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let carry1;
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let carry2;
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let carry3;
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let mut carry4;
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let carry5;
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let carry6;
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let carry7;
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let carry8;
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let carry9;
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h0 += h0;
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h1 += h1;
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h2 += h2;
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h3 += h3;
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h4 += h4;
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h5 += h5;
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h6 += h6;
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h7 += h7;
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h8 += h8;
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h9 += h9;
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h0 += h0;
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h1 += h1;
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h2 += h2;
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h3 += h3;
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h4 += h4;
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h5 += h5;
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h6 += h6;
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h7 += h7;
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h8 += h8;
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h9 += h9;
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carry0 = h0 + (1 << 25); h1 += carry0 >> 26; h0 -= carry0 & KTOP_38BITS;
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carry4 = h4 + (1 << 25); h5 += carry4 >> 26; h4 -= carry4 & KTOP_38BITS;
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carry0 = h0 + (1 << 25); h1 += carry0 >> 26; h0 -= carry0 & KTOP_38BITS;
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carry4 = h4 + (1 << 25); h5 += carry4 >> 26; h4 -= carry4 & KTOP_38BITS;
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carry1 = h1 + (1 << 24); h2 += carry1 >> 25; h1 -= carry1 & KTOP_39BITS;
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carry5 = h5 + (1 << 24); h6 += carry5 >> 25; h5 -= carry5 & KTOP_39BITS;
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carry1 = h1 + (1 << 24); h2 += carry1 >> 25; h1 -= carry1 & KTOP_39BITS;
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carry5 = h5 + (1 << 24); h6 += carry5 >> 25; h5 -= carry5 & KTOP_39BITS;
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carry2 = h2 + (1 << 25); h3 += carry2 >> 26; h2 -= carry2 & KTOP_38BITS;
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carry6 = h6 + (1 << 25); h7 += carry6 >> 26; h6 -= carry6 & KTOP_38BITS;
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carry2 = h2 + (1 << 25); h3 += carry2 >> 26; h2 -= carry2 & KTOP_38BITS;
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carry6 = h6 + (1 << 25); h7 += carry6 >> 26; h6 -= carry6 & KTOP_38BITS;
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carry3 = h3 + (1 << 24); h4 += carry3 >> 25; h3 -= carry3 & KTOP_39BITS;
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carry7 = h7 + (1 << 24); h8 += carry7 >> 25; h7 -= carry7 & KTOP_39BITS;
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carry3 = h3 + (1 << 24); h4 += carry3 >> 25; h3 -= carry3 & KTOP_39BITS;
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carry7 = h7 + (1 << 24); h8 += carry7 >> 25; h7 -= carry7 & KTOP_39BITS;
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carry4 = h4 + (1 << 25); h5 += carry4 >> 26; h4 -= carry4 & KTOP_38BITS;
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carry8 = h8 + (1 << 25); h9 += carry8 >> 26; h8 -= carry8 & KTOP_38BITS;
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carry4 = h4 + (1 << 25); h5 += carry4 >> 26; h4 -= carry4 & KTOP_38BITS;
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carry8 = h8 + (1 << 25); h9 += carry8 >> 26; h8 -= carry8 & KTOP_38BITS;
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carry9 = h9 + (1 << 24); h0 += (carry9 >> 25) * 19; h9 -= carry9 & KTOP_39BITS;
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carry9 = h9 + (1 << 24); h0 += (carry9 >> 25) * 19; h9 -= carry9 & KTOP_39BITS;
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carry0 = h0 + (1 << 25); h1 += carry0 >> 26; h0 -= carry0 & KTOP_38BITS;
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carry0 = h0 + (1 << 25); h1 += carry0 >> 26; h0 -= carry0 & KTOP_38BITS;
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h.value[0] = h0 as i32;
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h.value[1] = h1 as i32;
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h.value[2] = h2 as i32;
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h.value[3] = h3 as i32;
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h.value[4] = h4 as i32;
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h.value[5] = h5 as i32;
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h.value[6] = h6 as i32;
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h.value[7] = h7 as i32;
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h.value[8] = h8 as i32;
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h.value[9] = h9 as i32;
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FieldElement {
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value: [ h0 as i32, h1 as i32,
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h2 as i32, h3 as i32,
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h4 as i32, h5 as i32,
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h6 as i32, h7 as i32,
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h8 as i32, h9 as i32, ]
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}
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}
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}
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#[cfg(test)]
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@@ -1041,65 +1040,66 @@ fn square2() {
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let (negc, cbytes) = case.get("c").unwrap();
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assert!(!nega && !negc);
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let a = test_from_bytes(&abytes);
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let c = test_from_bytes(&cbytes);
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let mut r = FieldElement::new();
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fe_sq2(&mut r, &a);
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let a = test_from_bytes(&abytes);
|
||||
let c = test_from_bytes(&cbytes);
|
||||
let r = a.sq2();
|
||||
assert_eq!(r, c);
|
||||
});
|
||||
}
|
||||
|
||||
pub fn fe_pow22523(z: &FieldElement) -> FieldElement
|
||||
{
|
||||
let mut t0 = z.square();
|
||||
let mut t1 = t0.square();
|
||||
for _ in 1..2 {
|
||||
t1.square_mut();
|
||||
}
|
||||
t1 *= &z;
|
||||
t0 *= &t1;
|
||||
t0.square_mut();
|
||||
t0 *= &t1;
|
||||
t1 = t0.square();
|
||||
for _ in 1..5 {
|
||||
t1.square_mut();
|
||||
}
|
||||
t0 *= &t1;
|
||||
t1 = t0.square();
|
||||
for _ in 1..10 {
|
||||
t1.square_mut();
|
||||
}
|
||||
t1 *= &t0;
|
||||
let mut t2 = t1.square();
|
||||
for _ in 1..20 {
|
||||
t2.square_mut();
|
||||
}
|
||||
t1 *= &t2;
|
||||
t1.square_mut();
|
||||
for _ in 1..10 {
|
||||
t1.square_mut();
|
||||
}
|
||||
t0 *= &t1;
|
||||
t1 = t0.square();
|
||||
for _ in 1..50 {
|
||||
t1.square_mut();
|
||||
}
|
||||
t1 *= &t0;
|
||||
t2 = t1.square();
|
||||
for _ in 1..100 {
|
||||
t2.square_mut();
|
||||
}
|
||||
t1 *= &t2;
|
||||
t1.square_mut();
|
||||
for _ in 1..50 {
|
||||
t1.square_mut();
|
||||
}
|
||||
t0 *= &t1;
|
||||
t0.square_mut();
|
||||
for _ in 1..2 {
|
||||
impl FieldElement {
|
||||
pub fn pow22523(&self) -> FieldElement
|
||||
{
|
||||
let mut t0 = self.square();
|
||||
let mut t1 = t0.square();
|
||||
for _ in 1..2 {
|
||||
t1.square_mut();
|
||||
}
|
||||
t1 *= &self;
|
||||
t0 *= &t1;
|
||||
t0.square_mut();
|
||||
t0 *= &t1;
|
||||
t1 = t0.square();
|
||||
for _ in 1..5 {
|
||||
t1.square_mut();
|
||||
}
|
||||
t0 *= &t1;
|
||||
t1 = t0.square();
|
||||
for _ in 1..10 {
|
||||
t1.square_mut();
|
||||
}
|
||||
t1 *= &t0;
|
||||
let mut t2 = t1.square();
|
||||
for _ in 1..20 {
|
||||
t2.square_mut();
|
||||
}
|
||||
t1 *= &t2;
|
||||
t1.square_mut();
|
||||
for _ in 1..10 {
|
||||
t1.square_mut();
|
||||
}
|
||||
t0 *= &t1;
|
||||
t1 = t0.square();
|
||||
for _ in 1..50 {
|
||||
t1.square_mut();
|
||||
}
|
||||
t1 *= &t0;
|
||||
t2 = t1.square();
|
||||
for _ in 1..100 {
|
||||
t2.square_mut();
|
||||
}
|
||||
t1 *= &t2;
|
||||
t1.square_mut();
|
||||
for _ in 1..50 {
|
||||
t1.square_mut();
|
||||
}
|
||||
t0 *= &t1;
|
||||
t0.square_mut();
|
||||
for _ in 1..2 {
|
||||
t0.square_mut();
|
||||
}
|
||||
&t0 * &self
|
||||
}
|
||||
&t0 * &z
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
@@ -1113,7 +1113,7 @@ fn pow22523() {
|
||||
assert!(!nega && !negc);
|
||||
let a = test_from_bytes(&abytes);
|
||||
let c = test_from_bytes(&cbytes);
|
||||
let r = fe_pow22523(&a);
|
||||
let r = a.pow22523();
|
||||
assert_eq!(r, c);
|
||||
});
|
||||
}
|
||||
|
||||
@@ -51,7 +51,7 @@ impl Point {
|
||||
let mut hx = v3.square();
|
||||
hx *= &v;
|
||||
hx *= &u; /* x = uv^7 */
|
||||
hx = fe_pow22523(&hx); /* x = (uv^7)^((q-5)/8) */
|
||||
hx = hx.pow22523(); /* x = (uv^7)^((q-5)/8) */
|
||||
hx *= &v3;
|
||||
hx *= &u; /* x = uv^3(uv^7)^((q-5)/8) */
|
||||
|
||||
@@ -312,7 +312,7 @@ fn ge_p2_dbl(r: &mut PointP1P1, p: &Point2)
|
||||
{
|
||||
r.x = p.x.square();
|
||||
r.z = p.y.square();
|
||||
fe_sq2(&mut r.t, &p.z);
|
||||
r.t = p.z.sq2();
|
||||
r.y = &p.x + &p.y;
|
||||
let t0 = r.y.square();
|
||||
r.y = &r.z + &r.x;
|
||||
|
||||
Reference in New Issue
Block a user