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fixed the bugs in crt

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Hatvani Tamás
2026-04-09 13:18:31 +02:00
parent 3473883507
commit a721456b45
1 changed files with 21 additions and 21 deletions
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42
main.c
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@@ -166,26 +166,28 @@ unsigned __int128 kinai_maradek_tetel(uint64_t *m, uint64_t d, prime_test_t *p,
// C1: c^(d mod P-1) mod P
uint64_t temp_exponent = d % (p->prime - 1);
uint64_t m_bin_length = 0;
uint64_t *m_as_binary = dec_to_bin(*m, &m_bin_length);
uint64_t c1 = quick_pow(m_as_binary, p->base, p->prime, m_bin_length);
uint64_t exponent_bin_length = 0;
uint64_t *exponent_as_binary = dec_to_bin(temp_exponent, &exponent_bin_length);
uint64_t c1 = quick_pow(exponent_as_binary, *m, p->prime, exponent_bin_length);
free(exponent_as_binary);
// C2: c^(d mod Q-1) mod Q
temp_exponent = d % (q->prime - 1);
uint64_t c2 = quick_pow(m_as_binary, q->base, q->prime, m_bin_length);
free(m_as_binary);
exponent_as_binary = dec_to_bin(temp_exponent, &exponent_bin_length);
uint64_t c2 = quick_pow(exponent_as_binary, *m, q->prime, exponent_bin_length);
free(exponent_as_binary);
euklidian_result_t y = euklidian_algorigthm_extended(Mp, Mq); // in the struct the x will mean the y1 and y will mean the y2
// if either of them is less then 0 shift them into postive range with fi_n
while (y.x < 0) {
y.x += p->prime;
}
while (y.y < 0) {
y.y += q->prime;
}
// if either of them is less a negative number shift them into postive range with with hte modulo
y.x %= p->prime;
y.x += p->prime;
y.y %= q->prime;
y.y += q->prime;
return (c1 * y.x * Mp) + (c2 * y.y * Mq) % M;
unsigned __int128 s1 = (c1 * y.x * Mp) % M;
unsigned __int128 s2 = (c2 * y.y * Mq) % M;
return (s1 + s2) % M;
}
unsigned __int128 rsa_encrypt(uint64_t *m, prime_test_t *p, prime_test_t *q) {
@@ -206,14 +208,12 @@ unsigned __int128 rsa_encrypt(uint64_t *m, prime_test_t *p, prime_test_t *q) {
} while (e <= 1 && e >= fi_n && prime_test(e, p->base)); // the p and q base is used everywhere anyways, i wont pass in another arg
euklidian_result_t calc_d = euklidian_algorigthm_extended(fi_n, e);
// if either of them is less then 0 shift them into postive range with fi_n
while (calc_d.x < 0) {
calc_d.x += fi_n;
}
while (calc_d.y < 0) {
calc_d.y += fi_n;
}
__int128 d = calc_d.y;
// if either of them is less a negative number shift them into postive range with with hte modulo
calc_d.x %= fi_n;
calc_d.y %= fi_n;
unsigned __int128 d = calc_d.y;
uint64_t length = 0;
uint64_t *nyenye = dec_to_bin(e, &length);