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1 /* crypto/seed/seed_ofb.c -*- mode:C; c-file-style: "eay" -*- */ | 1 /* crypto/seed/seed_ofb.c -*- mode:C; c-file-style: "eay" -*- */ |
2 /* ==================================================================== | 2 /* ==================================================================== |
3 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. | 3 * Copyright (c) 1998-2007 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 #include "seed_locl.h" | 108 #include <openssl/seed.h> |
109 #include <string.h> | 109 #include <openssl/modes.h> |
110 | 110 |
111 void SEED_ofb128_encrypt(const unsigned char *in, unsigned char *out, | 111 void SEED_ofb128_encrypt(const unsigned char *in, unsigned char *out, |
112 size_t len, const SEED_KEY_SCHEDULE *ks, | 112 size_t len, const SEED_KEY_SCHEDULE *ks, |
113 unsigned char ivec[SEED_BLOCK_SIZE], int *num) | 113 unsigned char ivec[SEED_BLOCK_SIZE], int *num) |
114 { | 114 { |
115 » int n; | 115 » CRYPTO_ofb128_encrypt(in,out,len,ks,ivec,num,(block128_f)SEED_encrypt); |
116 | |
117 » n = *num; | |
118 » | |
119 » while (len--) | |
120 » » { | |
121 » » if (n == 0) | |
122 » » » SEED_encrypt(ivec, ivec, ks); | |
123 » » *(out++) = *(in++) ^ ivec[n]; | |
124 » » n = (n+1) % SEED_BLOCK_SIZE; | |
125 » » } | |
126 | |
127 » *num = n; | |
128 } | 116 } |
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