diff options
Diffstat (limited to 'crypto/camellia/cmll_cbc.c')
-rw-r--r-- | crypto/camellia/cmll_cbc.c | 248 |
1 files changed, 59 insertions, 189 deletions
diff --git a/crypto/camellia/cmll_cbc.c b/crypto/camellia/cmll_cbc.c index 4141a7b59b..545e6c1f41 100644 --- a/crypto/camellia/cmll_cbc.c +++ b/crypto/camellia/cmll_cbc.c @@ -55,219 +55,89 @@ # endif #endif #include <assert.h> -#include <stdio.h> #include <string.h> #include <openssl/camellia.h> #include "cmll_locl.h" - void Camellia_cbc_encrypt(const unsigned char *in, unsigned char *out, - const unsigned long length, const CAMELLIA_KEY *key, - unsigned char *ivec, const int enc) { + const unsigned long length, const CAMELLIA_KEY *key, + unsigned char *ivec, const int enc) + { unsigned long n; unsigned long len = length; + unsigned char tmp[CAMELLIA_BLOCK_SIZE]; const unsigned char *iv = ivec; - union { u32 t32[CAMELLIA_BLOCK_SIZE/sizeof(u32)]; - u8 t8 [CAMELLIA_BLOCK_SIZE]; } tmp; - const union { long one; char little; } camellia_endian = {1}; - assert(in && out && key && ivec); assert((CAMELLIA_ENCRYPT == enc)||(CAMELLIA_DECRYPT == enc)); - if(((size_t)in|(size_t)out|(size_t)ivec) % sizeof(u32) == 0) + if (CAMELLIA_ENCRYPT == enc) { - if (CAMELLIA_ENCRYPT == enc) + while (len >= CAMELLIA_BLOCK_SIZE) { - while (len >= CAMELLIA_BLOCK_SIZE) - { - XOR4WORD2((u32 *)out, - (u32 *)in, (u32 *)iv); - if (camellia_endian.little) - SWAP4WORD((u32 *)out); - key->enc(key->rd_key, (u32 *)out); - if (camellia_endian.little) - SWAP4WORD((u32 *)out); - iv = out; - len -= CAMELLIA_BLOCK_SIZE; - in += CAMELLIA_BLOCK_SIZE; - out += CAMELLIA_BLOCK_SIZE; - } - if (len) - { - for(n=0; n < len; ++n) - out[n] = in[n] ^ iv[n]; - for(n=len; n < CAMELLIA_BLOCK_SIZE; ++n) - out[n] = iv[n]; - if (camellia_endian.little) - SWAP4WORD((u32 *)out); - key->enc(key->rd_key, (u32 *)out); - if (camellia_endian.little) - SWAP4WORD((u32 *)out); - iv = out; - } - memcpy(ivec,iv,CAMELLIA_BLOCK_SIZE); + for(n=0; n < CAMELLIA_BLOCK_SIZE; ++n) + out[n] = in[n] ^ iv[n]; + Camellia_encrypt(out, out, key); + iv = out; + len -= CAMELLIA_BLOCK_SIZE; + in += CAMELLIA_BLOCK_SIZE; + out += CAMELLIA_BLOCK_SIZE; } - else if (in != out) + if (len) { - while (len >= CAMELLIA_BLOCK_SIZE) - { - memcpy(out,in,CAMELLIA_BLOCK_SIZE); - if (camellia_endian.little) - SWAP4WORD((u32 *)out); - key->dec(key->rd_key,(u32 *)out); - if (camellia_endian.little) - SWAP4WORD((u32 *)out); - XOR4WORD((u32 *)out, (u32 *)iv); - iv = in; - len -= CAMELLIA_BLOCK_SIZE; - in += CAMELLIA_BLOCK_SIZE; - out += CAMELLIA_BLOCK_SIZE; - } - if (len) - { - memcpy(tmp.t8, in, CAMELLIA_BLOCK_SIZE); - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - key->dec(key->rd_key, tmp.t32); - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - for(n=0; n < len; ++n) - out[n] = tmp.t8[n] ^ iv[n]; - iv = in; - } - memcpy(ivec,iv,CAMELLIA_BLOCK_SIZE); + for(n=0; n < len; ++n) + out[n] = in[n] ^ iv[n]; + for(n=len; n < CAMELLIA_BLOCK_SIZE; ++n) + out[n] = iv[n]; + Camellia_encrypt(out, out, key); + iv = out; } - else /* in == out */ + memcpy(ivec,iv,CAMELLIA_BLOCK_SIZE); + } + else if (in != out) + { + while (len >= CAMELLIA_BLOCK_SIZE) { - while (len >= CAMELLIA_BLOCK_SIZE) - { - memcpy(tmp.t8, in, CAMELLIA_BLOCK_SIZE); - if (camellia_endian.little) - SWAP4WORD((u32 *)out); - key->dec(key->rd_key, (u32 *)out); - if (camellia_endian.little) - SWAP4WORD((u32 *)out); - XOR4WORD((u32 *)out, (u32 *)ivec); - memcpy(ivec, tmp.t8, CAMELLIA_BLOCK_SIZE); - len -= CAMELLIA_BLOCK_SIZE; - in += CAMELLIA_BLOCK_SIZE; - out += CAMELLIA_BLOCK_SIZE; - } - if (len) - { - memcpy(tmp.t8, in, CAMELLIA_BLOCK_SIZE); - if (camellia_endian.little) - SWAP4WORD((u32 *)out); - key->dec(key->rd_key,(u32 *)out); - if (camellia_endian.little) - SWAP4WORD((u32 *)out); - for(n=0; n < len; ++n) - out[n] ^= ivec[n]; - for(n=len; n < CAMELLIA_BLOCK_SIZE; ++n) - out[n] = tmp.t8[n]; - memcpy(ivec, tmp.t8, CAMELLIA_BLOCK_SIZE); - } + Camellia_decrypt(in, out, key); + for(n=0; n < CAMELLIA_BLOCK_SIZE; ++n) + out[n] ^= iv[n]; + iv = in; + len -= CAMELLIA_BLOCK_SIZE; + in += CAMELLIA_BLOCK_SIZE; + out += CAMELLIA_BLOCK_SIZE; } - } - else /* no aligned */ - { - if (CAMELLIA_ENCRYPT == enc) + if (len) { - while (len >= CAMELLIA_BLOCK_SIZE) - { - for(n=0; n < CAMELLIA_BLOCK_SIZE; ++n) - tmp.t8[n] = in[n] ^ iv[n]; - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - key->enc(key->rd_key, tmp.t32); - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - memcpy(out, tmp.t8, CAMELLIA_BLOCK_SIZE); - iv = out; - len -= CAMELLIA_BLOCK_SIZE; - in += CAMELLIA_BLOCK_SIZE; - out += CAMELLIA_BLOCK_SIZE; - } - if (len) - { - for(n=0; n < len; ++n) - tmp.t8[n] = in[n] ^ iv[n]; - for(n=len; n < CAMELLIA_BLOCK_SIZE; ++n) - tmp.t8[n] = iv[n]; - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - key->enc(key->rd_key, tmp.t32); - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - memcpy(out, tmp.t8, CAMELLIA_BLOCK_SIZE); - iv = out; - } - memcpy(ivec,iv,CAMELLIA_BLOCK_SIZE); + Camellia_decrypt(in,tmp,key); + for(n=0; n < len; ++n) + out[n] = tmp[n] ^ iv[n]; + iv = in; } - else if (in != out) + memcpy(ivec,iv,CAMELLIA_BLOCK_SIZE); + } + else + { + while (len >= CAMELLIA_BLOCK_SIZE) { - while (len >= CAMELLIA_BLOCK_SIZE) - { - memcpy(tmp.t8,in,CAMELLIA_BLOCK_SIZE); - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - key->dec(key->rd_key,tmp.t32); - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - for(n=0; n < CAMELLIA_BLOCK_SIZE; ++n) - out[n] = tmp.t8[n] ^ iv[n]; - iv = in; - len -= CAMELLIA_BLOCK_SIZE; - in += CAMELLIA_BLOCK_SIZE; - out += CAMELLIA_BLOCK_SIZE; - } - if (len) - { - memcpy(tmp.t8, in, CAMELLIA_BLOCK_SIZE); - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - key->dec(key->rd_key, tmp.t32); - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - for(n=0; n < len; ++n) - out[n] = tmp.t8[n] ^ iv[n]; - iv = in; - } - memcpy(ivec,iv,CAMELLIA_BLOCK_SIZE); + memcpy(tmp, in, CAMELLIA_BLOCK_SIZE); + Camellia_decrypt(in, out, key); + for(n=0; n < CAMELLIA_BLOCK_SIZE; ++n) + out[n] ^= ivec[n]; + memcpy(ivec, tmp, CAMELLIA_BLOCK_SIZE); + len -= CAMELLIA_BLOCK_SIZE; + in += CAMELLIA_BLOCK_SIZE; + out += CAMELLIA_BLOCK_SIZE; } - else + if (len) { - while (len >= CAMELLIA_BLOCK_SIZE) - { - memcpy(tmp.t8, in, CAMELLIA_BLOCK_SIZE); - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - key->dec(key->rd_key, tmp.t32); - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - for(n=0; n < CAMELLIA_BLOCK_SIZE; ++n) - tmp.t8[n] ^= ivec[n]; - memcpy(ivec, in, CAMELLIA_BLOCK_SIZE); - memcpy(out, tmp.t8, CAMELLIA_BLOCK_SIZE); - len -= CAMELLIA_BLOCK_SIZE; - in += CAMELLIA_BLOCK_SIZE; - out += CAMELLIA_BLOCK_SIZE; - } - if (len) - { - memcpy(tmp.t8, in, CAMELLIA_BLOCK_SIZE); - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - key->dec(key->rd_key,tmp.t32); - if (camellia_endian.little) - SWAP4WORD(tmp.t32); - for(n=0; n < len; ++n) - tmp.t8[n] ^= ivec[n]; - memcpy(ivec, in, CAMELLIA_BLOCK_SIZE); - memcpy(out,tmp.t8,len); - } + memcpy(tmp, in, CAMELLIA_BLOCK_SIZE); + Camellia_decrypt(tmp, out, key); + for(n=0; n < len; ++n) + out[n] ^= ivec[n]; + for(n=len; n < CAMELLIA_BLOCK_SIZE; ++n) + out[n] = tmp[n]; + memcpy(ivec, tmp, CAMELLIA_BLOCK_SIZE); } } -} + } |