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1 /* crypto/camellia/camellia_ofb.c -*- mode:C; c-file-style: "eay" -*- */ | 1 /* crypto/camellia/camellia_ofb.c -*- mode:C; c-file-style: "eay" -*- */ |
2 /* ==================================================================== | 2 /* ==================================================================== |
3 * Copyright (c) 2006 The OpenSSL Project. All rights reserved. | 3 * Copyright (c) 2006 The OpenSSL Project. All rights reserved. |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions | 6 * modification, are permitted provided that the following conditions |
7 * are met: | 7 * are met: |
8 * | 8 * |
9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
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98 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | 98 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
99 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | 99 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
100 * SUCH DAMAGE. | 100 * SUCH DAMAGE. |
101 * | 101 * |
102 * The licence and distribution terms for any publically available version or | 102 * The licence and distribution terms for any publically available version or |
103 * derivative of this code cannot be changed. i.e. this code cannot simply be | 103 * derivative of this code cannot be changed. i.e. this code cannot simply be |
104 * copied and put under another distribution licence | 104 * copied and put under another distribution licence |
105 * [including the GNU Public Licence.] | 105 * [including the GNU Public Licence.] |
106 */ | 106 */ |
107 | 107 |
108 #ifndef CAMELLIA_DEBUG | |
109 # ifndef NDEBUG | |
110 # define NDEBUG | |
111 # endif | |
112 #endif | |
113 #include <assert.h> | |
114 #include <openssl/camellia.h> | 108 #include <openssl/camellia.h> |
115 #include "cmll_locl.h" | 109 #include <openssl/modes.h> |
116 | 110 |
117 /* The input and output encrypted as though 128bit ofb mode is being | 111 /* The input and output encrypted as though 128bit ofb mode is being |
118 * used. The extra state information to record how much of the | 112 * used. The extra state information to record how much of the |
119 * 128bit block we have used is contained in *num; | 113 * 128bit block we have used is contained in *num; |
120 */ | 114 */ |
121 void Camellia_ofb128_encrypt(const unsigned char *in, unsigned char *out, | 115 void Camellia_ofb128_encrypt(const unsigned char *in, unsigned char *out, |
122 » const unsigned long length, const CAMELLIA_KEY *key, | 116 » size_t length, const CAMELLIA_KEY *key, |
123 unsigned char *ivec, int *num) { | 117 unsigned char *ivec, int *num) { |
124 | 118 » CRYPTO_ofb128_encrypt(in,out,length,key,ivec,num,(block128_f)Camellia_en
crypt); |
125 » unsigned int n; | |
126 » unsigned long l=length; | |
127 | |
128 » assert(in && out && key && ivec && num); | |
129 | |
130 » n = *num; | |
131 | |
132 » while (l--) { | |
133 » » if (n == 0) { | |
134 » » » Camellia_encrypt(ivec, ivec, key); | |
135 » » } | |
136 » » *(out++) = *(in++) ^ ivec[n]; | |
137 » » n = (n+1) % CAMELLIA_BLOCK_SIZE; | |
138 » } | |
139 | |
140 » *num=n; | |
141 } | 119 } |
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