mirror of
https://github.com/Scandal-UK/Incognito_RCM.git
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92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
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#ifndef _CCRYPTO_H_
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#define _CCRYPTO_H_
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//#include <stdlib.h>
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//#include <stdio.h>
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// #include <inttypes.h>
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// #include <stdlib.h>
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// #include <string.h>
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// #include <stdbool.h>
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#include "../utils/types.h"
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// typedef uint8_t u8;
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// typedef uint16_t u16;
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// typedef uint32_t u32;
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// typedef uint64_t u64;
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// union {
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// u16 foo;
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// u8 islittle;
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// } endian = {.foo = 1};
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union bigint128 {
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u8 value8[16];
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u64 value64[2];
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};
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inline static union bigint128 geniv(u64 *pos) {
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union bigint128 out;
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// if (endian.islittle) {
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//sacrifice code size for possible speed up
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out.value8[15] = ((u8 *) pos)[0];
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out.value8[14] = ((u8 *) pos)[1];
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out.value8[13] = ((u8 *) pos)[2];
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out.value8[12] = ((u8 *) pos)[3];
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out.value8[11] = ((u8 *) pos)[4];
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out.value8[10] = ((u8 *) pos)[5];
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out.value8[9] = ((u8 *) pos)[6];
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out.value8[8] = ((u8 *) pos)[7];
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out.value8[7] = ((u8 *) pos)[8];
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out.value8[6] = ((u8 *) pos)[9];
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out.value8[5] = ((u8 *) pos)[10];
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out.value8[4] = ((u8 *) pos)[11];
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out.value8[3] = ((u8 *) pos)[12];
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out.value8[2] = ((u8 *) pos)[13];
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out.value8[1] = ((u8 *) pos)[14];
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out.value8[0] = ((u8 *) pos)[15];
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// } else {
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// out.value64[1] = pos[0];
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// out.value64[0] = pos[1];
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// }
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return out;
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}
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inline static void xor128(u64 *foo, u64 *bar) {
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foo[0] ^= bar[0];
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foo[1] ^= bar[1];
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}
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inline static void shift128(u8 *foo) {
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// if (endian.islittle) {
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//due to little endian order, we can do this
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((u64 *) foo)[1] = (((u64 *) foo)[1] << 1) | (((u64 *) foo)[0] >> 63);
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((u64 *) foo)[0] = (((u64 *) foo)[0] << 1);
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// } else {
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// //sacrifice code size for possible speed up
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// foo[15] = (foo[15] << 1) | (foo[14] >> 7);
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// foo[14] = (foo[14] << 1) | (foo[13] >> 7);
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// foo[13] = (foo[13] << 1) | (foo[12] >> 7);
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// foo[12] = (foo[12] << 1) | (foo[11] >> 7);
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// foo[11] = (foo[11] << 1) | (foo[10] >> 7);
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// foo[10] = (foo[10] << 1) | (foo[9] >> 7);
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// foo[9] = (foo[9] << 1) | (foo[8] >> 7);
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// foo[8] = (foo[8] << 1) | (foo[7] >> 7);
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// foo[7] = (foo[7] << 1) | (foo[6] >> 7);
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// foo[6] = (foo[6] << 1) | (foo[5] >> 7);
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// foo[5] = (foo[5] << 1) | (foo[4] >> 7);
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// foo[4] = (foo[4] << 1) | (foo[3] >> 7);
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// foo[3] = (foo[3] << 1) | (foo[2] >> 7);
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// foo[2] = (foo[2] << 1) | (foo[1] >> 7);
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// foo[1] = (foo[1] << 1) | (foo[0] >> 7);
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// foo[0] = (foo[0] << 1);
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// }
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}
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void
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aes_xtsn_decrypt(u8 *buffer, u64 len, u8 *key, u8 *tweakin, u64 sectoroffsethi, u64 sectoroffsetlo, u32 sector_size);
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void
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aes_xtsn_encrypt(u8 *buffer, u64 len, u8 *key, u8 *tweakin, u64 sectoroffsethi, u64 sectoroffsetlo, u32 sector_size);
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#endif
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