Mascali/Picklock_RCM
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

keys: Refactor key crypto, fix SSL key dumping

Browse source
This commit is contained in:
shchmue 2022-10-29 15:11:13 -07:00
parent 5768fba4a7
commit e8d66f318d
4 changed files with 398 additions and 180 deletions
Download patch file Download diff file Expand all files Collapse all files

36
bdk/sec/se.c
View file

@ -721,31 +721,31 @@ out:;
// _mgf1_xor() and rsa_oaep_decode were derived from Atmosphère
static void _mgf1_xor(void *masked, u32 masked_size, const void *seed, u32 seed_size)
{
u8 cur_hash[0x20] __attribute__((aligned(4)));
u8 hash_buf[0xe4] __attribute__((aligned(4)));
u8 cur_hash[0x20] __attribute__((aligned(4)));
u8 hash_buf[0xe4] __attribute__((aligned(4)));
u32 hash_buf_size = seed_size + 4;
memcpy(hash_buf, seed, seed_size);
u32 round_num = 0;
u32 hash_buf_size = seed_size + 4;
memcpy(hash_buf, seed, seed_size);
u32 round_num = 0;
u8 *p_out = (u8 *)masked;
u8 *p_out = (u8 *)masked;
while (masked_size) {
u32 cur_size = MIN(masked_size, 0x20);
while (masked_size) {
u32 cur_size = MIN(masked_size, 0x20);
for (u32 i = 0; i < 4; i++)
hash_buf[seed_size + 3 - i] = (round_num >> (8 * i)) & 0xff;
round_num++;
for (u32 i = 0; i < 4; i++)
hash_buf[seed_size + 3 - i] = (round_num >> (8 * i)) & 0xff;
round_num++;
se_calc_sha256_oneshot(cur_hash, hash_buf, hash_buf_size);
se_calc_sha256_oneshot(cur_hash, hash_buf, hash_buf_size);
for (unsigned int i = 0; i < cur_size; i++) {
*p_out ^= cur_hash[i];
p_out++;
}
for (unsigned int i = 0; i < cur_size; i++) {
*p_out ^= cur_hash[i];
p_out++;
}
masked_size -= cur_size;
}
masked_size -= cur_size;
}
}
u32 se_rsa_oaep_decode(void *dst, u32 dst_size, const void *label_digest, u32 label_digest_size, u8 *buf, u32 buf_size)