| /* { dg-do compile } */ |
| |
| typedef unsigned char uint8_t; |
| typedef unsigned long int uint64_t; |
| union unaligned_64 { |
| uint64_t l; |
| } |
| __attribute__((packed)) __attribute__((may_alias)); |
| typedef struct AVDES { |
| uint64_t round_keys[3][16]; |
| } AVDES; |
| static const uint8_t PC1_shuffle[] = { |
| 64-57,64-49,64-41,64-33,64-25,64-17,64-9, 64-1,64-58,64-50,64-42,64-34,64-26,64-18, 64-10,64-2,64-59,64-51,64-43,64-35,64-27, 64-19,64-11,64-3,64-60,64-52,64-44,64-36, 64-63,64-55,64-47,64-39,64-31,64-23,64-15, 64-7,64-62,64-54,64-46,64-38,64-30,64-22, 64-14,64-6,64-61,64-53,64-45,64-37,64-29, 64-21,64-13,64-5,64-28,64-20,64-12,64-4 }; |
| static const uint8_t PC2_shuffle[] = { |
| 56-14,56-17,56-11,56-24,56-1,56-5, 56-3,56-28,56-15,56-6,56-21,56-10, 56-23,56-19,56-12,56-4,56-26,56-8, 56-16,56-7,56-27,56-20,56-13,56-2, 56-41,56-52,56-31,56-37,56-47,56-55, 56-30,56-40,56-51,56-45,56-33,56-48, 56-44,56-49,56-39,56-56,56-34,56-53, 56-46,56-42,56-50,56-36,56-29,56-32 }; |
| static uint64_t shuffle(uint64_t in, const uint8_t *shuffle, int shuffle_len) |
| { |
| int i; |
| uint64_t res = 0; |
| for (i = 0; i < shuffle_len; i++) |
| res += res + ((in >> *shuffle++) & 1); |
| return res; |
| } |
| void gen_roundkeys(uint64_t K[16], uint64_t key) |
| { |
| int i; |
| uint64_t CDn = shuffle(key, PC1_shuffle, sizeof(PC1_shuffle)); |
| for (i = 0; i < 16; i++) |
| K[i] = shuffle(CDn, PC2_shuffle, sizeof(PC2_shuffle)); |
| } |
