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14 lines
309 B
C
14 lines
309 B
C
#include "fe25519.h"
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#include "sc25519.h"
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#include "ge25519.h"
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void ge25519_pack(unsigned char r[32], const ge25519_p3 *p)
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{
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fe25519 tx, ty, zi;
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fe25519_invert(&zi, &p->z);
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fe25519_mul(&tx, &p->x, &zi);
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fe25519_mul(&ty, &p->y, &zi);
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fe25519_pack(r, &ty);
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r[31] ^= fe25519_getparity(&tx) << 7;
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}
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