forked from Qortal/qortal
a2b5fa140b
Most SQL tables defined but only payment transactions actually implemented. Maven support added. Some code imported from 'old' Qora: RIPEMD160 renamed as BrokenMD160 and deprecated. whispersystem's Ed25519 implementation (to be replaced with bouncycastle). Basic Account/PublicKeyAccount/PrivateKeyAccount code. Some utils like Base58 and Pair. To use: Use maven to fetch dependencies. Build project. Fire up an old-gen Qora node. Run src/test/update.java as a JUnit test to build DB structure. Run src/test/migrate.java as a JUnit test to migrate old Qora blocks to DB. You should now be able to run src/test/load.java and src/test/save.java as JUnit tests demonstrating loading/saving Transactions from/to database. This commit done while halfway through adding Block support!
61 lines
1.5 KiB
Java
61 lines
1.5 KiB
Java
package org.whispersystems.curve25519.java;
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public class ge_frombytes {
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//CONVERT #include "ge.h"
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static int[] d = {
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//CONVERT #include "d.h"
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-10913610,13857413,-15372611,6949391,114729,-8787816,-6275908,-3247719,-18696448,-12055116
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} ;
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static int[] sqrtm1 = {
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//CONVERT #include "sqrtm1.h"
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-32595792,-7943725,9377950,3500415,12389472,-272473,-25146209,-2005654,326686,11406482
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} ;
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public static int ge_frombytes_negate_vartime(ge_p3 h,byte[] s)
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{
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int[] u = new int[10];
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int[] v = new int[10];
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int[] v3 = new int[10];
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int[] vxx = new int[10];
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int[] check = new int[10];
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fe_frombytes.fe_frombytes(h.Y,s);
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fe_1.fe_1(h.Z);
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fe_sq.fe_sq(u,h.Y);
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fe_mul.fe_mul(v,u,d);
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fe_sub.fe_sub(u,u,h.Z); /* u = y^2-1 */
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fe_add.fe_add(v,v,h.Z); /* v = dy^2+1 */
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fe_sq.fe_sq(v3,v);
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fe_mul.fe_mul(v3,v3,v); /* v3 = v^3 */
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fe_sq.fe_sq(h.X,v3);
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fe_mul.fe_mul(h.X,h.X,v);
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fe_mul.fe_mul(h.X,h.X,u); /* x = uv^7 */
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fe_pow22523.fe_pow22523(h.X,h.X); /* x = (uv^7)^((q-5)/8) */
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fe_mul.fe_mul(h.X,h.X,v3);
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fe_mul.fe_mul(h.X,h.X,u); /* x = uv^3(uv^7)^((q-5)/8) */
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fe_sq.fe_sq(vxx,h.X);
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fe_mul.fe_mul(vxx,vxx,v);
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fe_sub.fe_sub(check,vxx,u); /* vx^2-u */
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if (fe_isnonzero.fe_isnonzero(check) != 0) {
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fe_add.fe_add(check,vxx,u); /* vx^2+u */
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if (fe_isnonzero.fe_isnonzero(check) != 0) return -1;
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fe_mul.fe_mul(h.X,h.X,sqrtm1);
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}
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if (fe_isnegative.fe_isnegative(h.X) == ((s[31] >>> 7) & 0x01)) {
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fe_neg.fe_neg(h.X,h.X);
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}
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fe_mul.fe_mul(h.T,h.X,h.Y);
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return 0;
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}
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}
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