| File: | out/../deps/openssl/openssl/crypto/des/xcbc_enc.c |
| Warning: | line 106, column 35 Although the value stored to 'xor0' is used in the enclosing expression, the value is never actually read from 'xor0' |
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| 1 | /* |
| 2 | * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved. |
| 3 | * |
| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
| 5 | * this file except in compliance with the License. You can obtain a copy |
| 6 | * in the file LICENSE in the source distribution or at |
| 7 | * https://www.openssl.org/source/license.html |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * DES low level APIs are deprecated for public use, but still ok for internal |
| 12 | * use. |
| 13 | */ |
| 14 | #include "internal/deprecated.h" |
| 15 | |
| 16 | #include "des_local.h" |
| 17 | |
| 18 | /* RSA's DESX */ |
| 19 | |
| 20 | void DES_xcbc_encrypt(const unsigned char *in, unsigned char *out, |
| 21 | long length, DES_key_schedule *schedule, |
| 22 | DES_cblock *ivec, const_DES_cblock *inw, |
| 23 | const_DES_cblock *outw, int enc) |
| 24 | { |
| 25 | register DES_LONG tin0, tin1; |
| 26 | register DES_LONG tout0, tout1, xor0, xor1; |
| 27 | register DES_LONG inW0, inW1, outW0, outW1; |
| 28 | register const unsigned char *in2; |
| 29 | register long l = length; |
| 30 | DES_LONG tin[2]; |
| 31 | unsigned char *iv; |
| 32 | |
| 33 | in2 = &(*inw)[0]; |
| 34 | c2l(in2, inW0)(inW0 =((DES_LONG)(*((in2)++))) , inW0|=((DES_LONG)(*((in2)++ )))<< 8L, inW0|=((DES_LONG)(*((in2)++)))<<16L, inW0 |=((DES_LONG)(*((in2)++)))<<24L); |
| 35 | c2l(in2, inW1)(inW1 =((DES_LONG)(*((in2)++))) , inW1|=((DES_LONG)(*((in2)++ )))<< 8L, inW1|=((DES_LONG)(*((in2)++)))<<16L, inW1 |=((DES_LONG)(*((in2)++)))<<24L); |
| 36 | in2 = &(*outw)[0]; |
| 37 | c2l(in2, outW0)(outW0 =((DES_LONG)(*((in2)++))) , outW0|=((DES_LONG)(*((in2) ++)))<< 8L, outW0|=((DES_LONG)(*((in2)++)))<<16L, outW0|=((DES_LONG)(*((in2)++)))<<24L); |
| 38 | c2l(in2, outW1)(outW1 =((DES_LONG)(*((in2)++))) , outW1|=((DES_LONG)(*((in2) ++)))<< 8L, outW1|=((DES_LONG)(*((in2)++)))<<16L, outW1|=((DES_LONG)(*((in2)++)))<<24L); |
| 39 | |
| 40 | iv = &(*ivec)[0]; |
| 41 | |
| 42 | if (enc) { |
| 43 | c2l(iv, tout0)(tout0 =((DES_LONG)(*((iv)++))) , tout0|=((DES_LONG)(*((iv)++ )))<< 8L, tout0|=((DES_LONG)(*((iv)++)))<<16L, tout0 |=((DES_LONG)(*((iv)++)))<<24L); |
| 44 | c2l(iv, tout1)(tout1 =((DES_LONG)(*((iv)++))) , tout1|=((DES_LONG)(*((iv)++ )))<< 8L, tout1|=((DES_LONG)(*((iv)++)))<<16L, tout1 |=((DES_LONG)(*((iv)++)))<<24L); |
| 45 | for (l -= 8; l >= 0; l -= 8) { |
| 46 | c2l(in, tin0)(tin0 =((DES_LONG)(*((in)++))) , tin0|=((DES_LONG)(*((in)++)) )<< 8L, tin0|=((DES_LONG)(*((in)++)))<<16L, tin0|= ((DES_LONG)(*((in)++)))<<24L); |
| 47 | c2l(in, tin1)(tin1 =((DES_LONG)(*((in)++))) , tin1|=((DES_LONG)(*((in)++)) )<< 8L, tin1|=((DES_LONG)(*((in)++)))<<16L, tin1|= ((DES_LONG)(*((in)++)))<<24L); |
| 48 | tin0 ^= tout0 ^ inW0; |
| 49 | tin[0] = tin0; |
| 50 | tin1 ^= tout1 ^ inW1; |
| 51 | tin[1] = tin1; |
| 52 | DES_encrypt1(tin, schedule, DES_ENCRYPT1); |
| 53 | tout0 = tin[0] ^ outW0; |
| 54 | l2c(tout0, out)(*((out)++)=(unsigned char)(((tout0) )&0xff), *((out)++)= (unsigned char)(((tout0)>> 8L)&0xff), *((out)++)=(unsigned char)(((tout0)>>16L)&0xff), *((out)++)=(unsigned char )(((tout0)>>24L)&0xff)); |
| 55 | tout1 = tin[1] ^ outW1; |
| 56 | l2c(tout1, out)(*((out)++)=(unsigned char)(((tout1) )&0xff), *((out)++)= (unsigned char)(((tout1)>> 8L)&0xff), *((out)++)=(unsigned char)(((tout1)>>16L)&0xff), *((out)++)=(unsigned char )(((tout1)>>24L)&0xff)); |
| 57 | } |
| 58 | if (l != -8) { |
| 59 | c2ln(in, tin0, tin1, l + 8){ in+=l + 8; tin0=tin1=0; switch (l + 8) { case 8: tin1 =((DES_LONG )(*(--(in))))<<24L; case 7: tin1|=((DES_LONG)(*(--(in)) ))<<16L; case 6: tin1|=((DES_LONG)(*(--(in))))<< 8L ; case 5: tin1|=((DES_LONG)(*(--(in)))); case 4: tin0 =((DES_LONG )(*(--(in))))<<24L; case 3: tin0|=((DES_LONG)(*(--(in)) ))<<16L; case 2: tin0|=((DES_LONG)(*(--(in))))<< 8L ; case 1: tin0|=((DES_LONG)(*(--(in)))); } }; |
| 60 | tin0 ^= tout0 ^ inW0; |
| 61 | tin[0] = tin0; |
| 62 | tin1 ^= tout1 ^ inW1; |
| 63 | tin[1] = tin1; |
| 64 | DES_encrypt1(tin, schedule, DES_ENCRYPT1); |
| 65 | tout0 = tin[0] ^ outW0; |
| 66 | l2c(tout0, out)(*((out)++)=(unsigned char)(((tout0) )&0xff), *((out)++)= (unsigned char)(((tout0)>> 8L)&0xff), *((out)++)=(unsigned char)(((tout0)>>16L)&0xff), *((out)++)=(unsigned char )(((tout0)>>24L)&0xff)); |
| 67 | tout1 = tin[1] ^ outW1; |
| 68 | l2c(tout1, out)(*((out)++)=(unsigned char)(((tout1) )&0xff), *((out)++)= (unsigned char)(((tout1)>> 8L)&0xff), *((out)++)=(unsigned char)(((tout1)>>16L)&0xff), *((out)++)=(unsigned char )(((tout1)>>24L)&0xff)); |
| 69 | } |
| 70 | iv = &(*ivec)[0]; |
| 71 | l2c(tout0, iv)(*((iv)++)=(unsigned char)(((tout0) )&0xff), *((iv)++)=(unsigned char)(((tout0)>> 8L)&0xff), *((iv)++)=(unsigned char )(((tout0)>>16L)&0xff), *((iv)++)=(unsigned char)(( (tout0)>>24L)&0xff)); |
| 72 | l2c(tout1, iv)(*((iv)++)=(unsigned char)(((tout1) )&0xff), *((iv)++)=(unsigned char)(((tout1)>> 8L)&0xff), *((iv)++)=(unsigned char )(((tout1)>>16L)&0xff), *((iv)++)=(unsigned char)(( (tout1)>>24L)&0xff)); |
| 73 | } else { |
| 74 | c2l(iv, xor0)(xor0 =((DES_LONG)(*((iv)++))) , xor0|=((DES_LONG)(*((iv)++)) )<< 8L, xor0|=((DES_LONG)(*((iv)++)))<<16L, xor0|= ((DES_LONG)(*((iv)++)))<<24L); |
| 75 | c2l(iv, xor1)(xor1 =((DES_LONG)(*((iv)++))) , xor1|=((DES_LONG)(*((iv)++)) )<< 8L, xor1|=((DES_LONG)(*((iv)++)))<<16L, xor1|= ((DES_LONG)(*((iv)++)))<<24L); |
| 76 | for (l -= 8; l > 0; l -= 8) { |
| 77 | c2l(in, tin0)(tin0 =((DES_LONG)(*((in)++))) , tin0|=((DES_LONG)(*((in)++)) )<< 8L, tin0|=((DES_LONG)(*((in)++)))<<16L, tin0|= ((DES_LONG)(*((in)++)))<<24L); |
| 78 | tin[0] = tin0 ^ outW0; |
| 79 | c2l(in, tin1)(tin1 =((DES_LONG)(*((in)++))) , tin1|=((DES_LONG)(*((in)++)) )<< 8L, tin1|=((DES_LONG)(*((in)++)))<<16L, tin1|= ((DES_LONG)(*((in)++)))<<24L); |
| 80 | tin[1] = tin1 ^ outW1; |
| 81 | DES_encrypt1(tin, schedule, DES_DECRYPT0); |
| 82 | tout0 = tin[0] ^ xor0 ^ inW0; |
| 83 | tout1 = tin[1] ^ xor1 ^ inW1; |
| 84 | l2c(tout0, out)(*((out)++)=(unsigned char)(((tout0) )&0xff), *((out)++)= (unsigned char)(((tout0)>> 8L)&0xff), *((out)++)=(unsigned char)(((tout0)>>16L)&0xff), *((out)++)=(unsigned char )(((tout0)>>24L)&0xff)); |
| 85 | l2c(tout1, out)(*((out)++)=(unsigned char)(((tout1) )&0xff), *((out)++)= (unsigned char)(((tout1)>> 8L)&0xff), *((out)++)=(unsigned char)(((tout1)>>16L)&0xff), *((out)++)=(unsigned char )(((tout1)>>24L)&0xff)); |
| 86 | xor0 = tin0; |
| 87 | xor1 = tin1; |
| 88 | } |
| 89 | if (l != -8) { |
| 90 | c2l(in, tin0)(tin0 =((DES_LONG)(*((in)++))) , tin0|=((DES_LONG)(*((in)++)) )<< 8L, tin0|=((DES_LONG)(*((in)++)))<<16L, tin0|= ((DES_LONG)(*((in)++)))<<24L); |
| 91 | tin[0] = tin0 ^ outW0; |
| 92 | c2l(in, tin1)(tin1 =((DES_LONG)(*((in)++))) , tin1|=((DES_LONG)(*((in)++)) )<< 8L, tin1|=((DES_LONG)(*((in)++)))<<16L, tin1|= ((DES_LONG)(*((in)++)))<<24L); |
| 93 | tin[1] = tin1 ^ outW1; |
| 94 | DES_encrypt1(tin, schedule, DES_DECRYPT0); |
| 95 | tout0 = tin[0] ^ xor0 ^ inW0; |
| 96 | tout1 = tin[1] ^ xor1 ^ inW1; |
| 97 | l2cn(tout0, tout1, out, l + 8){ out+=l + 8; switch (l + 8) { case 8: *(--(out))=(unsigned char )(((tout1)>>24L)&0xff); case 7: *(--(out))=(unsigned char)(((tout1)>>16L)&0xff); case 6: *(--(out))=(unsigned char)(((tout1)>> 8L)&0xff); case 5: *(--(out))=(unsigned char)(((tout1) )&0xff); case 4: *(--(out))=(unsigned char )(((tout0)>>24L)&0xff); case 3: *(--(out))=(unsigned char)(((tout0)>>16L)&0xff); case 2: *(--(out))=(unsigned char)(((tout0)>> 8L)&0xff); case 1: *(--(out))=(unsigned char)(((tout0) )&0xff); } }; |
| 98 | xor0 = tin0; |
| 99 | xor1 = tin1; |
| 100 | } |
| 101 | |
| 102 | iv = &(*ivec)[0]; |
| 103 | l2c(xor0, iv)(*((iv)++)=(unsigned char)(((xor0) )&0xff), *((iv)++)=(unsigned char)(((xor0)>> 8L)&0xff), *((iv)++)=(unsigned char )(((xor0)>>16L)&0xff), *((iv)++)=(unsigned char)((( xor0)>>24L)&0xff)); |
| 104 | l2c(xor1, iv)(*((iv)++)=(unsigned char)(((xor1) )&0xff), *((iv)++)=(unsigned char)(((xor1)>> 8L)&0xff), *((iv)++)=(unsigned char )(((xor1)>>16L)&0xff), *((iv)++)=(unsigned char)((( xor1)>>24L)&0xff)); |
| 105 | } |
| 106 | tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0; |
Although the value stored to 'xor0' is used in the enclosing expression, the value is never actually read from 'xor0' | |
| 107 | inW0 = inW1 = outW0 = outW1 = 0; |
| 108 | tin[0] = tin[1] = 0; |
| 109 | } |