36 lines
949 B
C
36 lines
949 B
C
#ifndef ECC_H
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#define ECC_H
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#include <stdint.h>
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// Struct for representing a point on the elliptic curve
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typedef struct {
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uint64_t x;
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uint64_t y;
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} ECPoint;
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// Define an elliptic curve
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typedef struct {
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uint64_t a;
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uint64_t b;
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uint64_t p; // Prime modulus
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ECPoint generator; // Generator point
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uint64_t n; // Order of the curve
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} EllipticCurve;
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// Key pair
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typedef struct {
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uint64_t private_key;
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ECPoint public_key;
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} ECCKeyPair;
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// Function declarations
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ECPoint ecc_point_add(ECPoint P, ECPoint Q, EllipticCurve curve);
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ECPoint ecc_point_double(ECPoint P, EllipticCurve curve);
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ECPoint ecc_scalar_mult(uint64_t k, ECPoint P, EllipticCurve curve);
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ECCKeyPair ecc_generate_keypair(EllipticCurve curve);
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void ecc_encrypt(uint64_t plaintext, ECPoint public_key, EllipticCurve curve, ECPoint *C1, uint64_t *C2);
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uint64_t ecc_decrypt(ECPoint C1, uint64_t C2, uint64_t private_key, EllipticCurve curve);
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#endif
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