diff options
author | Bodo Möller <bodo@openssl.org> | 1999-06-09 17:28:30 +0000 |
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committer | Bodo Möller <bodo@openssl.org> | 1999-06-09 17:28:30 +0000 |
commit | 3bcfce2881b8fa9d840e6a61d43843504064a562 (patch) | |
tree | 4208a2644e4ac31a07dee4b951d137ccbf7d7895 /crypto/des/cbc_enc.c | |
parent | df63a389a5cae779e535a9dd3ba7a6bfaaf313ec (diff) |
Unify DES library: ncbc_enc.c wasn't used, but its content was almost
duplicated in cbc_enc.c (without IV updating) and in des_enc.c
As pointed out by others on the openssl-dev list, des_cbc_encrypt (without
IV updating; defined in cbc_enc.c) exists only for historical reasons:
des_ncbc_encrypt should be used instead (and the caller does not have
to manually update the IV).
If des_cbc_enrypt is not needed for backwards compatibility, the
definition of des_ncbc_encrypt should be put back into des_enc.c, and
both cbc_enc.c and ncbc_enc.c can be deleted.
If des_cbc_encrypt *is* needed for backwards compatibility, its behaviour
obviously should not change (i.e., don't add IV updating).
Diffstat (limited to 'crypto/des/cbc_enc.c')
-rw-r--r-- | crypto/des/cbc_enc.c | 82 |
1 files changed, 2 insertions, 80 deletions
diff --git a/crypto/des/cbc_enc.c b/crypto/des/cbc_enc.c index c9c881b12a..677903ae4e 100644 --- a/crypto/des/cbc_enc.c +++ b/crypto/des/cbc_enc.c @@ -56,84 +56,6 @@ * [including the GNU Public Licence.] */ -#include "des_locl.h" - -/* Note that this is inconsistent with other DES functions in that it doesn't - update ivec */ -void des_cbc_encrypt(const unsigned char *in, unsigned char *out, long length, - des_key_schedule schedule, des_cblock *ivec, int enc) - { - register DES_LONG tin0,tin1; - register DES_LONG tout0,tout1,xor0,xor1; - register long l=length; - DES_LONG tin[2]; - unsigned char *iv; - - iv = &(*ivec)[0]; - - if (enc) - { - c2l(iv,tout0); - c2l(iv,tout1); - for (l-=8; l>=0; l-=8) - { - c2l(in,tin0); - c2l(in,tin1); - tin0^=tout0; tin[0]=tin0; - tin1^=tout1; tin[1]=tin1; - des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT); - tout0=tin[0]; l2c(tout0,out); - tout1=tin[1]; l2c(tout1,out); - } - if (l != -8) - { - c2ln(in,tin0,tin1,l+8); - tin0^=tout0; tin[0]=tin0; - tin1^=tout1; tin[1]=tin1; - des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT); - tout0=tin[0]; l2c(tout0,out); - tout1=tin[1]; l2c(tout1,out); - } -#if 0 - iv = &(*ivec)[0]; - l2c(tout0,iv); - l2c(tout1,iv); -#endif - } - else - { - c2l(iv,xor0); - c2l(iv,xor1); - for (l-=8; l>=0; l-=8) - { - c2l(in,tin0); tin[0]=tin0; - c2l(in,tin1); tin[1]=tin1; - des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT); - tout0=tin[0]^xor0; - tout1=tin[1]^xor1; - l2c(tout0,out); - l2c(tout1,out); - xor0=tin0; - xor1=tin1; - } - if (l != -8) - { - c2l(in,tin0); tin[0]=tin0; - c2l(in,tin1); tin[1]=tin1; - des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT); - tout0=tin[0]^xor0; - tout1=tin[1]^xor1; - l2cn(tout0,tout1,out,l+8); - /* xor0=tin0; - xor1=tin1; */ - } -#if 0 - iv = &(*ivec)[0]; - l2c(xor0,iv); - l2c(xor1,iv); -#endif - } - tin0=tin1=tout0=tout1=xor0=xor1=0; - tin[0]=tin[1]=0; - } +#define CBC_ENC_C__DONT_UPDATE_IV +#include "ncbc_enc.c" /* des_cbc_encrypt */ |