26 #if !defined(POLARSSL_CONFIG_FILE)
29 #include POLARSSL_CONFIG_FILE
32 #if defined(POLARSSL_ASN1_PARSE_C)
36 #if defined(POLARSSL_BIGNUM_C)
40 #if defined(POLARSSL_PLATFORM_C)
43 #define polarssl_malloc malloc
44 #define polarssl_free free
51 static void polarssl_zeroize(
void *v,
size_t n ) {
52 volatile unsigned char *p = v;
while( n-- ) *p++ = 0;
59 const unsigned char *end,
62 if( ( end - *p ) < 1 )
65 if( ( **p & 0x80 ) == 0 )
72 if( ( end - *p ) < 2 )
80 if( ( end - *p ) < 3 )
83 *len = ( (*p)[1] << 8 ) | (*p)[2];
88 if( ( end - *p ) < 4 )
91 *len = ( (*p)[1] << 16 ) | ( (*p)[2] << 8 ) | (*p)[3];
96 if( ( end - *p ) < 5 )
99 *len = ( (*p)[1] << 24 ) | ( (*p)[2] << 16 ) | ( (*p)[3] << 8 ) |
109 if( *len > (
size_t) ( end - *p ) )
116 const unsigned char *end,
117 size_t *len,
int tag )
119 if( ( end - *p ) < 1 )
131 const unsigned char *end,
143 *val = ( **p != 0 ) ? 1 : 0;
150 const unsigned char *end,
159 if( len >
sizeof(
int ) || ( **p & 0x80 ) != 0 )
166 *val = ( *val << 8 ) | **p;
173 #if defined(POLARSSL_BIGNUM_C)
175 const unsigned char *end,
233 if( (*len)-- < 2 || *(*p)++ != 0 )
245 const unsigned char *end,
258 if( *p + len != end )
278 if( cur->
next == NULL )
295 const unsigned char *end,
305 if( ( end - *p ) < 1 )
319 polarssl_zeroize( params,
sizeof(
asn1_buf) );
339 const unsigned char *end,
345 memset( ¶ms, 0,
sizeof(
asn1_buf) );
347 if( ( ret =
asn1_get_alg( p, end, alg, ¶ms ) ) != 0 )
371 while( ( cur = *head ) != NULL )
380 const char *
oid,
size_t len )
382 while( list != NULL )
384 if( list->
oid.
len == len &&
385 memcmp( list->
oid.
p, oid, len ) == 0 )