DeforaOS/Phone
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Probably slightly improved encryption by XORing the key with the cyphered content

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This commit is contained in:
Pierre Pronchery 2010-08-01 18:43:14 +00:00
parent 43239612b3
commit d270262623
1 changed files with 17 additions and 3 deletions
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20
src/plugins/smscrypt.c
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@ -41,6 +41,7 @@ typedef struct _SMSCrypt
/* prototypes */
static void _smscrypt_clear(PhonePlugin * plugin);
static int _smscrypt_init(PhonePlugin * plugin);
static int _smscrypt_destroy(PhonePlugin * plugin);
static int _smscrypt_event(PhonePlugin * plugin, PhoneEvent event, ...);
@ -65,6 +66,15 @@ PhonePlugin plugin =
/* private */
/* functions */
/* smscrypt_clear */
static void _smscrypt_clear(PhonePlugin * plugin)
{
SMSCrypt * smscrypt = plugin->priv;
memset(smscrypt->buf, 0, smscrypt->len);
}
/* smscrypt_init */
static int _smscrypt_init(PhonePlugin * plugin)
{
@ -154,10 +164,12 @@ static int _smscrypt_event_sms_receiving(PhonePlugin * plugin,
return 0; /* XXX warn */
for(i = 0; i < *len; i++)
{
(*buf)[i] ^= smscrypt->buf[j++];
(*buf)[i] ^= smscrypt->buf[j];
smscrypt->buf[j++] ^= (*buf)[i];
j %= smscrypt->len;
}
*encoding = PHONE_ENCODING_UTF8;
_smscrypt_clear(plugin);
return 0;
}
@ -176,14 +188,16 @@ static int _smscrypt_event_sms_sending(PhonePlugin * plugin,
if(*encoding != PHONE_ENCODING_UTF8)
return 0; /* not for us */
if(_smscrypt_secret(plugin, number) != 0)
return 0; /* XXX warn */
return 0; /* XXX warn and cancel if relevant */
*encoding = PHONE_ENCODING_DATA;
for(i = 0; i < *len; i++)
{
(*buf)[i] ^= smscrypt->buf[j++];
(*buf)[i] ^= smscrypt->buf[j];
smscrypt->buf[j++] = (*buf)[i];
j %= smscrypt->len;
}
*encoding = PHONE_ENCODING_DATA;
_smscrypt_clear(plugin);
return 0;
}