| Line | Source | Count |
|---|
| 1 | | - |
| 2 | | - |
| 3 | | - |
| 4 | | - |
| 5 | | - |
| 6 | | - |
| 7 | | - |
| 8 | int CRYPTO_xts128_encrypt(const XTS128_CONTEXT *ctx, const unsigned char iv[16], | - |
| 9 | const unsigned char *inp, unsigned char *out, | - |
| 10 | size_t len, int enc) | - |
| 11 | { | - |
| 12 | union { u64 u[2]; u32 d[4]; u8 c[16]; } tweak, scratch; | - |
| 13 | unsigned int i; | - |
| 14 | | - |
| 15 | if (len<16| TRUE | never evaluated | | FALSE | never evaluated |
never executed: return -1; -1;never executed: return -1; | 0 |
| 16 | | - |
| 17 | memcpy(tweak.c, iv, 16); | - |
| 18 | | - |
| 19 | (*ctx->block2)(tweak.c,tweak.c,ctx->key2); | - |
| 20 | | - |
| 21 | if (!enc| TRUE | never evaluated | | FALSE | never evaluated |
| TRUE | never evaluated | | FALSE | never evaluated |
| TRUE | never evaluated | | FALSE | never evaluated |
never executed: len-=16; | 0 |
| 22 | | - |
| 23 | while (len>=16| TRUE | never evaluated | | FALSE | never evaluated |
| 0 |
| 24 | | - |
| 25 | | - |
| 26 | | - |
| 27 | | - |
| 28 | | - |
| 29 | scratch.u[0] = ((u64*)inp)[0]^tweak.u[0]; | - |
| 30 | scratch.u[1] = ((u64*)inp)[1]^tweak.u[1]; | - |
| 31 | | - |
| 32 | (*ctx->block1)(scratch.c,scratch.c,ctx->key1); | - |
| 33 | | - |
| 34 | | - |
| 35 | | - |
| 36 | | - |
| 37 | | - |
| 38 | ((u64*)out)[0] = scratch.u[0]^=tweak.u[0]; | - |
| 39 | ((u64*)out)[1] = scratch.u[1]^=tweak.u[1]; | - |
| 40 | | - |
| 41 | inp += 16; | - |
| 42 | out += 16; | - |
| 43 | len -= 16; | - |
| 44 | | - |
| 45 | if (len==0| TRUE | never evaluated | | FALSE | never evaluated |
never executed: return 0; 0;never executed: return 0; | 0 |
| 46 | | - |
| 47 | | - |
| 48 | unsigned int carry,res; | - |
| 49 | | - |
| 50 | res = 0x87&(((int)tweak.d[3])>>31); | - |
| 51 | carry = (unsigned int)(tweak.u[0]>>63); | - |
| 52 | tweak.u[0] = (tweak.u[0]<<1)^res; | - |
| 53 | tweak.u[1] = (tweak.u[1]<<1)|carry; | - |
| 54 | } never executed: end of block | 0 |
| 55 | if (enc| TRUE | never evaluated | | FALSE | never evaluated |
| 0 |
| 56 | for (i=0;i<len| TRUE | never evaluated | | FALSE | never evaluated |
| 0 |
| 57 | u8 c = inp[i]; | - |
| 58 | out[i] = scratch.c[i]; | - |
| 59 | scratch.c[i] = c; | - |
| 60 | } never executed: end of block | 0 |
| 61 | scratch.u[0] ^= tweak.u[0]; | - |
| 62 | scratch.u[1] ^= tweak.u[1]; | - |
| 63 | (*ctx->block1)(scratch.c,scratch.c,ctx->key1); | - |
| 64 | scratch.u[0] ^= tweak.u[0]; | - |
| 65 | scratch.u[1] ^= tweak.u[1]; | - |
| 66 | memcpy(out-16,scratch.c,16); | - |
| 67 | } never executed: end of block | 0 |
| 68 | else { | - |
| 69 | union { u64 u[2]; u8 c[16]; } tweak1; | - |
| 70 | | - |
| 71 | | - |
| 72 | unsigned int carry,res; | - |
| 73 | | - |
| 74 | res = 0x87&(((int)tweak.d[3])>>31); | - |
| 75 | carry = (unsigned int)(tweak.u[0]>>63); | - |
| 76 | tweak1.u[0] = (tweak.u[0]<<1)^res; | - |
| 77 | tweak1.u[1] = (tweak.u[1]<<1)|carry; | - |
| 78 | scratch.u[0] = ((u64*)inp)[0]^tweak1.u[0]; | - |
| 79 | scratch.u[1] = ((u64*)inp)[1]^tweak1.u[1]; | - |
| 80 | | - |
| 81 | (*ctx->block1)(scratch.c,scratch.c,ctx->key1); | - |
| 82 | scratch.u[0] ^= tweak1.u[0]; | - |
| 83 | scratch.u[1] ^= tweak1.u[1]; | - |
| 84 | | - |
| 85 | for (i=0;i<len| TRUE | never evaluated | | FALSE | never evaluated |
| 0 |
| 86 | u8 c = inp[16+i]; | - |
| 87 | out[16+i] = scratch.c[i]; | - |
| 88 | scratch.c[i] = c; | - |
| 89 | } never executed: end of block | 0 |
| 90 | scratch.u[0] ^= tweak.u[0]; | - |
| 91 | scratch.u[1] ^= tweak.u[1]; | - |
| 92 | (*ctx->block1)(scratch.c,scratch.c,ctx->key1); | - |
| 93 | | - |
| 94 | | - |
| 95 | | - |
| 96 | | - |
| 97 | | - |
| 98 | ((u64*)out)[0] = scratch.u[0]^tweak.u[0]; | - |
| 99 | ((u64*)out)[1] = scratch.u[1]^tweak.u[1]; | - |
| 100 | | - |
| 101 | } never executed: end of block | 0 |
| 102 | | - |
| 103 | return never executed: return 0; 0;never executed: return 0; | 0 |
| 104 | } | - |
| | |