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Add _init() and _free() for cipher modules

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This commit is contained in:
Paul Bakker
2014-06-18 11:12:03 +02:00
parent 0464dd9357
commit c7ea99af4f
17 changed files with 375 additions and 61 deletions
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18
library/blowfish.c
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@ -41,6 +41,11 @@
#if !defined(POLARSSL_BLOWFISH_ALT)
/* Implementation that should never be optimized out by the compiler */
static void polarssl_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* 32-bit integer manipulation macros (big endian)
*/
@ -152,6 +157,19 @@ static void blowfish_dec( blowfish_context *ctx, uint32_t *xl, uint32_t *xr )
*xr = Xr;
}
void blowfish_init( blowfish_context *ctx )
{
memset( ctx, 0, sizeof( blowfish_context ) );
}
void blowfish_free( blowfish_context *ctx )
{
if( ctx == NULL )
return;
polarssl_zeroize( ctx, sizeof( blowfish_context ) );
}
/*
* Blowfish key schedule
*/