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gs: replace openssl aes implementation with ape/libsec

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This commit is contained in:
cinap_lenrek 2016-04-11 20:27:50 +02:00
parent 464763202b
commit 8f4db30e78
3 changed files with 11 additions and 9 deletions
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3
sys/src/cmd/gs/mkfile
View file

@ -64,8 +64,7 @@ BIN=/$objtype/bin
TARG=gs
OFILES=\
obj/gs.$O\
`{sed 's#^./obj/(.*)\.o .*#obj/\1.$O#' src/ld.tr >[2] /dev/null | sort} \
/$objtype/lib/ape/libcrypto.a
`{sed 's#^./obj/(.*)\.o .*#obj/\1.$O#' src/ld.tr >[2] /dev/null | sort}
# The first driver is the default.
DRIVERS=\

11
sys/src/cmd/gs/src/saes.c
View file

@ -102,19 +102,20 @@ s_aes_process(stream_state * ss, stream_cursor_read * pr,
if (state->keylength < 1 || state->keylength > SAES_MAX_KEYLENGTH)
return ERRC;
if (!state->initialized) {
memset(&state->aes, 0, sizeof(state->aes));
AES_set_decrypt_key(state->key, state->keylength*8, &state->aes);
if (in_size < 16) return 0; /* get more data */
/* read the initialization vector from the first 16 bytes */
if (in_size < 16) return 0; /* get more data */
memcpy(state->iv, pr->ptr + 1, 16);
state->initialized = 1;
pr->ptr += 16;
setupAESstate(&state->aes, state->key, state->keylength, state->iv);
state->initialized = 1;
}
/* decrypt available blocks */
while (pr->ptr + 16 <= limit) {
AES_cbc_encrypt(pr->ptr + 1, temp, 16, &state->aes, state->iv, AES_DECRYPT);
memcpy(temp, pr->ptr + 1, 16);
aesCBCdecrypt(temp, 16, &state->aes);
pr->ptr += 16;
if (last && pr->ptr == pr->limit) {
/* we're on the last block; unpad if necessary */

6
sys/src/cmd/gs/src/saes.h
View file

@ -21,7 +21,9 @@
# define saes_INCLUDED
#include "scommon.h"
#include <openssl/aes.h>
#define _PLAN9_SOURCE
#include <libsec.h>
/* maximum supported key length in bytes */
#define SAES_MAX_KEYLENGTH 32
@ -36,7 +38,7 @@ struct stream_aes_state_s
unsigned char iv[16]; /* CBC initialization vector */
int initialized; /* whether we're set up */
int use_padding; /* are we using RFC 1423-style padding? */
AES_KEY aes;
AESstate aes;
};
#ifndef stream_aes_state_DEFINED