| Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/cast/c_cfb64.c |
| Source code | Switch to Preprocessed file |
| Line | Source | Count | ||||||
|---|---|---|---|---|---|---|---|---|
| 1 | /* | - | ||||||
| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. | - | ||||||
| 3 | * | - | ||||||
| 4 | * Licensed under the OpenSSL license (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 | #include <openssl/cast.h> | - | ||||||
| 11 | #include "cast_lcl.h" | - | ||||||
| 12 | - | |||||||
| 13 | /* | - | ||||||
| 14 | * The input and output encrypted as though 64bit cfb mode is being used. | - | ||||||
| 15 | * The extra state information to record how much of the 64bit block we have | - | ||||||
| 16 | * used is contained in *num; | - | ||||||
| 17 | */ | - | ||||||
| 18 | - | |||||||
| 19 | void CAST_cfb64_encrypt(const unsigned char *in, unsigned char *out, | - | ||||||
| 20 | long length, const CAST_KEY *schedule, | - | ||||||
| 21 | unsigned char *ivec, int *num, int enc) | - | ||||||
| 22 | { | - | ||||||
| 23 | register CAST_LONG v0, v1, t; | - | ||||||
| 24 | register int n = *num; | - | ||||||
| 25 | register long l = length; | - | ||||||
| 26 | CAST_LONG ti[2]; | - | ||||||
| 27 | unsigned char *iv, c, cc; | - | ||||||
| 28 | - | |||||||
| 29 | iv = ivec; | - | ||||||
| 30 | if (enc) {
| 29-41 | ||||||
| 31 | while (l--) {
| 41-6278 | ||||||
| 32 | if (n == 0) {
| 785-5493 | ||||||
| 33 | n2l(iv, v0); | - | ||||||
| 34 | ti[0] = v0; | - | ||||||
| 35 | n2l(iv, v1); | - | ||||||
| 36 | ti[1] = v1; | - | ||||||
| 37 | CAST_encrypt((CAST_LONG *)ti, schedule); | - | ||||||
| 38 | iv = ivec; | - | ||||||
| 39 | t = ti[0]; | - | ||||||
| 40 | l2n(t, iv); | - | ||||||
| 41 | t = ti[1]; | - | ||||||
| 42 | l2n(t, iv); | - | ||||||
| 43 | iv = ivec; | - | ||||||
| 44 | } executed 785 times by 1 test: end of blockExecuted by:
| 785 | ||||||
| 45 | c = *(in++) ^ iv[n]; | - | ||||||
| 46 | *(out++) = c; | - | ||||||
| 47 | iv[n] = c; | - | ||||||
| 48 | n = (n + 1) & 0x07; | - | ||||||
| 49 | } executed 6278 times by 1 test: end of blockExecuted by:
| 6278 | ||||||
| 50 | } else { executed 41 times by 1 test: end of blockExecuted by:
| 41 | ||||||
| 51 | while (l--) {
| 29-6278 | ||||||
| 52 | if (n == 0) {
| 785-5493 | ||||||
| 53 | n2l(iv, v0); | - | ||||||
| 54 | ti[0] = v0; | - | ||||||
| 55 | n2l(iv, v1); | - | ||||||
| 56 | ti[1] = v1; | - | ||||||
| 57 | CAST_encrypt((CAST_LONG *)ti, schedule); | - | ||||||
| 58 | iv = ivec; | - | ||||||
| 59 | t = ti[0]; | - | ||||||
| 60 | l2n(t, iv); | - | ||||||
| 61 | t = ti[1]; | - | ||||||
| 62 | l2n(t, iv); | - | ||||||
| 63 | iv = ivec; | - | ||||||
| 64 | } executed 785 times by 1 test: end of blockExecuted by:
| 785 | ||||||
| 65 | cc = *(in++); | - | ||||||
| 66 | c = iv[n]; | - | ||||||
| 67 | iv[n] = cc; | - | ||||||
| 68 | *(out++) = c ^ cc; | - | ||||||
| 69 | n = (n + 1) & 0x07; | - | ||||||
| 70 | } executed 6278 times by 1 test: end of blockExecuted by:
| 6278 | ||||||
| 71 | } executed 29 times by 1 test: end of blockExecuted by:
| 29 | ||||||
| 72 | v0 = v1 = ti[0] = ti[1] = t = c = cc = 0; | - | ||||||
| 73 | *num = n; | - | ||||||
| 74 | } executed 70 times by 1 test: end of blockExecuted by:
| 70 | ||||||
| Source code | Switch to Preprocessed file |