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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2023-01-11 14:52:35 +01:00
parent 480f683d15
commit 1b6c09a62e
391 changed files with 73134 additions and 75084 deletions
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82
library/arc4.c
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@ -35,24 +35,25 @@
#if !defined(MBEDTLS_ARC4_ALT)
void mbedtls_arc4_init( mbedtls_arc4_context *ctx )
void mbedtls_arc4_init(mbedtls_arc4_context *ctx)
{
memset( ctx, 0, sizeof( mbedtls_arc4_context ) );
memset(ctx, 0, sizeof(mbedtls_arc4_context));
}
void mbedtls_arc4_free( mbedtls_arc4_context *ctx )
void mbedtls_arc4_free(mbedtls_arc4_context *ctx)
{
if( ctx == NULL )
if (ctx == NULL) {
return;
}
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_arc4_context ) );
mbedtls_platform_zeroize(ctx, sizeof(mbedtls_arc4_context));
}
/*
* ARC4 key schedule
*/
void mbedtls_arc4_setup( mbedtls_arc4_context *ctx, const unsigned char *key,
unsigned int keylen )
void mbedtls_arc4_setup(mbedtls_arc4_context *ctx, const unsigned char *key,
unsigned int keylen)
{
int i, j, a;
unsigned int k;
@ -62,17 +63,19 @@ void mbedtls_arc4_setup( mbedtls_arc4_context *ctx, const unsigned char *key,
ctx->y = 0;
m = ctx->m;
for( i = 0; i < 256; i++ )
for (i = 0; i < 256; i++) {
m[i] = (unsigned char) i;
}
j = k = 0;
for( i = 0; i < 256; i++, k++ )
{
if( k >= keylen ) k = 0;
for (i = 0; i < 256; i++, k++) {
if (k >= keylen) {
k = 0;
}
a = m[i];
j = ( j + a + key[k] ) & 0xFF;
j = (j + a + key[k]) & 0xFF;
m[i] = m[j];
m[j] = (unsigned char) a;
}
@ -81,8 +84,8 @@ void mbedtls_arc4_setup( mbedtls_arc4_context *ctx, const unsigned char *key,
/*
* ARC4 cipher function
*/
int mbedtls_arc4_crypt( mbedtls_arc4_context *ctx, size_t length, const unsigned char *input,
unsigned char *output )
int mbedtls_arc4_crypt(mbedtls_arc4_context *ctx, size_t length, const unsigned char *input,
unsigned char *output)
{
int x, y, a, b;
size_t i;
@ -92,22 +95,21 @@ int mbedtls_arc4_crypt( mbedtls_arc4_context *ctx, size_t length, const unsigned
y = ctx->y;
m = ctx->m;
for( i = 0; i < length; i++ )
{
x = ( x + 1 ) & 0xFF; a = m[x];
y = ( y + a ) & 0xFF; b = m[y];
for (i = 0; i < length; i++) {
x = (x + 1) & 0xFF; a = m[x];
y = (y + a) & 0xFF; b = m[y];
m[x] = (unsigned char) b;
m[y] = (unsigned char) a;
output[i] = (unsigned char)
( input[i] ^ m[(unsigned char)( a + b )] );
(input[i] ^ m[(unsigned char) (a + b)]);
}
ctx->x = x;
ctx->y = y;
return( 0 );
return 0;
}
#endif /* !MBEDTLS_ARC4_ALT */
@ -142,45 +144,47 @@ static const unsigned char arc4_test_ct[3][8] =
/*
* Checkup routine
*/
int mbedtls_arc4_self_test( int verbose )
int mbedtls_arc4_self_test(int verbose)
{
int i, ret = 0;
unsigned char ibuf[8];
unsigned char obuf[8];
mbedtls_arc4_context ctx;
mbedtls_arc4_init( &ctx );
mbedtls_arc4_init(&ctx);
for( i = 0; i < 3; i++ )
{
if( verbose != 0 )
mbedtls_printf( " ARC4 test #%d: ", i + 1 );
for (i = 0; i < 3; i++) {
if (verbose != 0) {
mbedtls_printf(" ARC4 test #%d: ", i + 1);
}
memcpy( ibuf, arc4_test_pt[i], 8 );
memcpy(ibuf, arc4_test_pt[i], 8);
mbedtls_arc4_setup( &ctx, arc4_test_key[i], 8 );
mbedtls_arc4_crypt( &ctx, 8, ibuf, obuf );
mbedtls_arc4_setup(&ctx, arc4_test_key[i], 8);
mbedtls_arc4_crypt(&ctx, 8, ibuf, obuf);
if( memcmp( obuf, arc4_test_ct[i], 8 ) != 0 )
{
if( verbose != 0 )
mbedtls_printf( "failed\n" );
if (memcmp(obuf, arc4_test_ct[i], 8) != 0) {
if (verbose != 0) {
mbedtls_printf("failed\n");
}
ret = 1;
goto exit;
}
if( verbose != 0 )
mbedtls_printf( "passed\n" );
if (verbose != 0) {
mbedtls_printf("passed\n");
}
}
if( verbose != 0 )
mbedtls_printf( "\n" );
if (verbose != 0) {
mbedtls_printf("\n");
}
exit:
mbedtls_arc4_free( &ctx );
mbedtls_arc4_free(&ctx);
return( ret );
return ret;
}
#endif /* MBEDTLS_SELF_TEST */