| File: | out/../deps/openssl/openssl/crypto/des/pcbc_enc.c |
| Warning: | line 71, column 26 Although the value stored to 'xor1' is used in the enclosing expression, the value is never actually read from 'xor1' |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 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 | void DES_pcbc_encrypt(const unsigned char *input, unsigned char *output, |
| 19 | long length, DES_key_schedule *schedule, |
| 20 | DES_cblock *ivec, int enc) |
| 21 | { |
| 22 | register DES_LONG sin0, sin1, xor0, xor1, tout0, tout1; |
| 23 | DES_LONG tin[2]; |
| 24 | const unsigned char *in; |
| 25 | unsigned char *out, *iv; |
| 26 | |
| 27 | in = input; |
| 28 | out = output; |
| 29 | iv = &(*ivec)[0]; |
| 30 | |
| 31 | if (enc) { |
| 32 | c2l(iv, xor0)(xor0 =((DES_LONG)(*((iv)++))) , xor0|=((DES_LONG)(*((iv)++)) )<< 8L, xor0|=((DES_LONG)(*((iv)++)))<<16L, xor0|= ((DES_LONG)(*((iv)++)))<<24L); |
| 33 | c2l(iv, xor1)(xor1 =((DES_LONG)(*((iv)++))) , xor1|=((DES_LONG)(*((iv)++)) )<< 8L, xor1|=((DES_LONG)(*((iv)++)))<<16L, xor1|= ((DES_LONG)(*((iv)++)))<<24L); |
| 34 | for (; length > 0; length -= 8) { |
| 35 | if (length >= 8) { |
| 36 | c2l(in, sin0)(sin0 =((DES_LONG)(*((in)++))) , sin0|=((DES_LONG)(*((in)++)) )<< 8L, sin0|=((DES_LONG)(*((in)++)))<<16L, sin0|= ((DES_LONG)(*((in)++)))<<24L); |
| 37 | c2l(in, sin1)(sin1 =((DES_LONG)(*((in)++))) , sin1|=((DES_LONG)(*((in)++)) )<< 8L, sin1|=((DES_LONG)(*((in)++)))<<16L, sin1|= ((DES_LONG)(*((in)++)))<<24L); |
| 38 | } else |
| 39 | c2ln(in, sin0, sin1, length){ in+=length; sin0=sin1=0; switch (length) { case 8: sin1 =(( DES_LONG)(*(--(in))))<<24L; case 7: sin1|=((DES_LONG)(* (--(in))))<<16L; case 6: sin1|=((DES_LONG)(*(--(in))))<< 8L; case 5: sin1|=((DES_LONG)(*(--(in)))); case 4: sin0 =((DES_LONG )(*(--(in))))<<24L; case 3: sin0|=((DES_LONG)(*(--(in)) ))<<16L; case 2: sin0|=((DES_LONG)(*(--(in))))<< 8L ; case 1: sin0|=((DES_LONG)(*(--(in)))); } }; |
| 40 | tin[0] = sin0 ^ xor0; |
| 41 | tin[1] = sin1 ^ xor1; |
| 42 | DES_encrypt1((DES_LONG *)tin, schedule, DES_ENCRYPT1); |
| 43 | tout0 = tin[0]; |
| 44 | tout1 = tin[1]; |
| 45 | xor0 = sin0 ^ tout0; |
| 46 | xor1 = sin1 ^ tout1; |
| 47 | 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)); |
| 48 | 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)); |
| 49 | } |
| 50 | } else { |
| 51 | c2l(iv, xor0)(xor0 =((DES_LONG)(*((iv)++))) , xor0|=((DES_LONG)(*((iv)++)) )<< 8L, xor0|=((DES_LONG)(*((iv)++)))<<16L, xor0|= ((DES_LONG)(*((iv)++)))<<24L); |
| 52 | c2l(iv, xor1)(xor1 =((DES_LONG)(*((iv)++))) , xor1|=((DES_LONG)(*((iv)++)) )<< 8L, xor1|=((DES_LONG)(*((iv)++)))<<16L, xor1|= ((DES_LONG)(*((iv)++)))<<24L); |
| 53 | for (; length > 0; length -= 8) { |
| 54 | c2l(in, sin0)(sin0 =((DES_LONG)(*((in)++))) , sin0|=((DES_LONG)(*((in)++)) )<< 8L, sin0|=((DES_LONG)(*((in)++)))<<16L, sin0|= ((DES_LONG)(*((in)++)))<<24L); |
| 55 | c2l(in, sin1)(sin1 =((DES_LONG)(*((in)++))) , sin1|=((DES_LONG)(*((in)++)) )<< 8L, sin1|=((DES_LONG)(*((in)++)))<<16L, sin1|= ((DES_LONG)(*((in)++)))<<24L); |
| 56 | tin[0] = sin0; |
| 57 | tin[1] = sin1; |
| 58 | DES_encrypt1((DES_LONG *)tin, schedule, DES_DECRYPT0); |
| 59 | tout0 = tin[0] ^ xor0; |
| 60 | tout1 = tin[1] ^ xor1; |
| 61 | if (length >= 8) { |
| 62 | 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)); |
| 63 | 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)); |
| 64 | } else |
| 65 | l2cn(tout0, tout1, out, length){ out+=length; switch (length) { 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); } }; |
| 66 | xor0 = tout0 ^ sin0; |
| 67 | xor1 = tout1 ^ sin1; |
| 68 | } |
| 69 | } |
| 70 | tin[0] = tin[1] = 0; |
| 71 | sin0 = sin1 = xor0 = xor1 = tout0 = tout1 = 0; |
Although the value stored to 'xor1' is used in the enclosing expression, the value is never actually read from 'xor1' | |
| 72 | } |