diff options
Diffstat (limited to 'openssl/crypto/camellia/cmll_ctr.c')
-rw-r--r-- | openssl/crypto/camellia/cmll_ctr.c | 85 |
1 files changed, 3 insertions, 82 deletions
diff --git a/openssl/crypto/camellia/cmll_ctr.c b/openssl/crypto/camellia/cmll_ctr.c index cc21b7089..014e621a3 100644 --- a/openssl/crypto/camellia/cmll_ctr.c +++ b/openssl/crypto/camellia/cmll_ctr.c @@ -49,95 +49,16 @@ * */ -#ifndef CAMELLIA_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include <assert.h> - #include <openssl/camellia.h> -#include "cmll_locl.h" - -/* NOTE: the IV/counter CTR mode is big-endian. The rest of the Camellia code - * is endian-neutral. */ -/* increment counter (128-bit int) by 1 */ -static void Camellia_ctr128_inc(unsigned char *counter) - { - unsigned long c; - - /* Grab bottom dword of counter and increment */ - c = GETU32(counter + 12); - c++; c &= 0xFFFFFFFF; - PUTU32(counter + 12, c); - - /* if no overflow, we're done */ - if (c) - return; - - /* Grab 1st dword of counter and increment */ - c = GETU32(counter + 8); - c++; c &= 0xFFFFFFFF; - PUTU32(counter + 8, c); - - /* if no overflow, we're done */ - if (c) - return; - - /* Grab 2nd dword of counter and increment */ - c = GETU32(counter + 4); - c++; c &= 0xFFFFFFFF; - PUTU32(counter + 4, c); - - /* if no overflow, we're done */ - if (c) - return; +#include <openssl/modes.h> - /* Grab top dword of counter and increment */ - c = GETU32(counter + 0); - c++; c &= 0xFFFFFFFF; - PUTU32(counter + 0, c); - } - -/* The input encrypted as though 128bit counter mode is being - * used. The extra state information to record how much of the - * 128bit block we have used is contained in *num, and the - * encrypted counter is kept in ecount_buf. Both *num and - * ecount_buf must be initialised with zeros before the first - * call to Camellia_ctr128_encrypt(). - * - * This algorithm assumes that the counter is in the x lower bits - * of the IV (ivec), and that the application has full control over - * overflow and the rest of the IV. This implementation takes NO - * responsability for checking that the counter doesn't overflow - * into the rest of the IV when incremented. - */ void Camellia_ctr128_encrypt(const unsigned char *in, unsigned char *out, - const unsigned long length, const CAMELLIA_KEY *key, + size_t length, const CAMELLIA_KEY *key, unsigned char ivec[CAMELLIA_BLOCK_SIZE], unsigned char ecount_buf[CAMELLIA_BLOCK_SIZE], unsigned int *num) { - unsigned int n; - unsigned long l=length; - - assert(in && out && key && counter && num); - assert(*num < CAMELLIA_BLOCK_SIZE); - - n = *num; - - while (l--) - { - if (n == 0) - { - Camellia_encrypt(ivec, ecount_buf, key); - Camellia_ctr128_inc(ivec); - } - *(out++) = *(in++) ^ ecount_buf[n]; - n = (n+1) % CAMELLIA_BLOCK_SIZE; - } - - *num=n; + CRYPTO_ctr128_encrypt(in,out,length,key,ivec,ecount_buf,num,(block128_f)Camellia_encrypt); } |