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Use separate lrz_encrypt and lrz_decrypt wrappers to lrz_crypt.

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This commit is contained in:
Con Kolivas 2011-03-19 14:04:22 +11:00
parent 0b1db75a44
commit ff5a5ed054
5 changed files with 20 additions and 7 deletions
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16
util.c
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@ -55,6 +55,8 @@
#include "sha4.h"
#include "aes.h"
#define LRZ_DECRYPT (0)
#define LRZ_ENCRYPT (1)
static const char *infile = NULL;
static char delete_infile = 0;
@ -164,7 +166,7 @@ static void xor128 (void *pa, const void *pb)
a [1] ^= b [1];
}
void lrz_crypt(rzip_control *control, uchar *buf, i64 len, uchar *salt, int encrypt)
static void lrz_crypt(rzip_control *control, uchar *buf, i64 len, uchar *salt, int encrypt)
{
/* Encryption requires CBC_LEN blocks so we can use ciphertext
* stealing to not have to pad the block */
@ -190,7 +192,7 @@ void lrz_crypt(rzip_control *control, uchar *buf, i64 len, uchar *salt, int encr
M = len % CBC_LEN;
N = len - M;
if (encrypt) {
if (encrypt == LRZ_ENCRYPT) {
print_maxverbose("Encrypting data \n");
if (unlikely(aes_setkey_enc(&aes_ctx, key, 128)))
failure("Failed to aes_setkey_enc in lrz_crypt\n");
@ -234,6 +236,16 @@ void lrz_crypt(rzip_control *control, uchar *buf, i64 len, uchar *salt, int encr
munlock(key, HASH_LEN + BLOCKSALT_LEN);
}
inline void lrz_encrypt(rzip_control *control, uchar *buf, i64 len, uchar *salt)
{
lrz_crypt(control, buf, len, salt, LRZ_ENCRYPT);
}
inline void lrz_decrypt(rzip_control *control, uchar *buf, i64 len, uchar *salt)
{
lrz_crypt(control, buf, len, salt, LRZ_DECRYPT);
}
void lrz_keygen(rzip_control *control, const uchar *passphrase)
{
int i, j;