5  *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
24 int mbedtls_asn1_write_len(unsigned char **p, const unsigned char *start, size_t len)  in mbedtls_asn1_write_len()  argument
40     if (required > (*p - start)) {  in mbedtls_asn1_write_len()
45         *--(*p) = MBEDTLS_BYTE_0(len);  in mbedtls_asn1_write_len()
50         *--(*p) = (unsigned char) (0x80 + required - 1);  in mbedtls_asn1_write_len()
56 int mbedtls_asn1_write_tag(unsigned char **p, const unsigned char *start, unsigned char tag)  in mbedtls_asn1_write_tag()  argument
58     if (*p - start < 1) {  in mbedtls_asn1_write_tag()
62     *--(*p) = tag;  in mbedtls_asn1_write_tag()
69 static int mbedtls_asn1_write_len_and_tag(unsigned char **p,  in mbedtls_asn1_write_len_and_tag()  argument
76     MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_len(p, start, len));  in mbedtls_asn1_write_len_and_tag()
77     MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_tag(p, start, tag));  in mbedtls_asn1_write_len_and_tag()
82 int mbedtls_asn1_write_raw_buffer(unsigned char **p, const unsigned char *start,  in mbedtls_asn1_write_raw_buffer()  argument
87     if (*p < start || (size_t) (*p - start) < size) {  in mbedtls_asn1_write_raw_buffer()
92     (*p) -= len;  in mbedtls_asn1_write_raw_buffer()
94         memcpy(*p, buf, len);  in mbedtls_asn1_write_raw_buffer()
101 int mbedtls_asn1_write_mpi(unsigned char **p, const unsigned char *start, const mbedtls_mpi *X)  in mbedtls_asn1_write_mpi()  argument
116     if (*p < start || (size_t) (*p - start) < len) {  in mbedtls_asn1_write_mpi()
120     (*p) -= len;  in mbedtls_asn1_write_mpi()
121     MBEDTLS_MPI_CHK(mbedtls_mpi_write_binary(X, *p, len));  in mbedtls_asn1_write_mpi()
126     if (X->s == 1 && **p & 0x80) {  in mbedtls_asn1_write_mpi()
127         if (*p - start < 1) {  in mbedtls_asn1_write_mpi()
131         *--(*p) = 0x00;  in mbedtls_asn1_write_mpi()
135     ret = mbedtls_asn1_write_len_and_tag(p, start, len, MBEDTLS_ASN1_INTEGER);  in mbedtls_asn1_write_mpi()
142 int mbedtls_asn1_write_null(unsigned char **p, const unsigned char *start)  in mbedtls_asn1_write_null()  argument
146     return mbedtls_asn1_write_len_and_tag(p, start, 0, MBEDTLS_ASN1_NULL);  in mbedtls_asn1_write_null()
149 int mbedtls_asn1_write_oid(unsigned char **p, const unsigned char *start,  in mbedtls_asn1_write_oid()  argument
155     MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_raw_buffer(p, start,  in mbedtls_asn1_write_oid()
157     return mbedtls_asn1_write_len_and_tag(p, start, len, MBEDTLS_ASN1_OID);  in mbedtls_asn1_write_oid()
160 int mbedtls_asn1_write_algorithm_identifier(unsigned char **p, const unsigned char *start,  in mbedtls_asn1_write_algorithm_identifier()  argument
164     return mbedtls_asn1_write_algorithm_identifier_ext(p, start, oid, oid_len, par_len, 1);  in mbedtls_asn1_write_algorithm_identifier()
167 int mbedtls_asn1_write_algorithm_identifier_ext(unsigned char **p, const unsigned char *start,  in mbedtls_asn1_write_algorithm_identifier_ext()  argument
176             MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_null(p, start));  in mbedtls_asn1_write_algorithm_identifier_ext()
182     MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_oid(p, start, oid, oid_len));  in mbedtls_asn1_write_algorithm_identifier_ext()
184     return mbedtls_asn1_write_len_and_tag(p, start, len,  in mbedtls_asn1_write_algorithm_identifier_ext()
188 int mbedtls_asn1_write_bool(unsigned char **p, const unsigned char *start, int boolean)  in mbedtls_asn1_write_bool()  argument
192     if (*p - start < 1) {  in mbedtls_asn1_write_bool()
196     *--(*p) = (boolean) ? 255 : 0;  in mbedtls_asn1_write_bool()
199     return mbedtls_asn1_write_len_and_tag(p, start, len, MBEDTLS_ASN1_BOOLEAN);  in mbedtls_asn1_write_bool()
202 static int asn1_write_tagged_int(unsigned char **p, const unsigned char *start, int val, int tag)  in asn1_write_tagged_int()  argument
207         if (*p - start < 1) {  in asn1_write_tagged_int()
211         *--(*p) = val & 0xff;  in asn1_write_tagged_int()
215     if (**p & 0x80) {  in asn1_write_tagged_int()
216         if (*p - start < 1) {  in asn1_write_tagged_int()
219         *--(*p) = 0x00;  in asn1_write_tagged_int()
223     return mbedtls_asn1_write_len_and_tag(p, start, len, tag);  in asn1_write_tagged_int()
226 int mbedtls_asn1_write_int(unsigned char **p, const unsigned char *start, int val)  in mbedtls_asn1_write_int()  argument
228     return asn1_write_tagged_int(p, start, val, MBEDTLS_ASN1_INTEGER);  in mbedtls_asn1_write_int()
231 int mbedtls_asn1_write_enum(unsigned char **p, const unsigned char *start, int val)  in mbedtls_asn1_write_enum()  argument
233     return asn1_write_tagged_int(p, start, val, MBEDTLS_ASN1_ENUMERATED);  in mbedtls_asn1_write_enum()
236 int mbedtls_asn1_write_tagged_string(unsigned char **p, const unsigned char *start, int tag,  in mbedtls_asn1_write_tagged_string()  argument
242     MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_raw_buffer(p, start,  in mbedtls_asn1_write_tagged_string()
246     return mbedtls_asn1_write_len_and_tag(p, start, len, tag);  in mbedtls_asn1_write_tagged_string()
249 int mbedtls_asn1_write_utf8_string(unsigned char **p, const unsigned char *start,  in mbedtls_asn1_write_utf8_string()  argument
252     return mbedtls_asn1_write_tagged_string(p, start, MBEDTLS_ASN1_UTF8_STRING, text, text_len);  in mbedtls_asn1_write_utf8_string()
255 int mbedtls_asn1_write_printable_string(unsigned char **p, const unsigned char *start,  in mbedtls_asn1_write_printable_string()  argument
258     return mbedtls_asn1_write_tagged_string(p, start, MBEDTLS_ASN1_PRINTABLE_STRING, text,  in mbedtls_asn1_write_printable_string()
262 int mbedtls_asn1_write_ia5_string(unsigned char **p, const unsigned char *start,  in mbedtls_asn1_write_ia5_string()  argument
265     return mbedtls_asn1_write_tagged_string(p, start, MBEDTLS_ASN1_IA5_STRING, text, text_len);  in mbedtls_asn1_write_ia5_string()
268 int mbedtls_asn1_write_named_bitstring(unsigned char **p,  in mbedtls_asn1_write_named_bitstring()  argument
279     unused_bits = (byte_len * 8) - bits;  in mbedtls_asn1_write_named_bitstring()
287         cur_byte = buf + byte_len - 1;  in mbedtls_asn1_write_named_bitstring()
298             bits--;  in mbedtls_asn1_write_named_bitstring()
304                 cur_byte_shifted = *--cur_byte;  in mbedtls_asn1_write_named_bitstring()
309     return mbedtls_asn1_write_bitstring(p, start, buf, bits);  in mbedtls_asn1_write_named_bitstring()
312 int mbedtls_asn1_write_bitstring(unsigned char **p, const unsigned char *start,  in mbedtls_asn1_write_bitstring()  argument
319     unused_bits = (byte_len * 8) - bits;  in mbedtls_asn1_write_bitstring()
321     if (*p < start || (size_t) (*p - start) < byte_len + 1) {  in mbedtls_asn1_write_bitstring()
329         byte_len--;  in mbedtls_asn1_write_bitstring()
330         *--(*p) = buf[byte_len] & ~((0x1 << unused_bits) - 1);  in mbedtls_asn1_write_bitstring()
331         (*p) -= byte_len;  in mbedtls_asn1_write_bitstring()
332         memcpy(*p, buf, byte_len);  in mbedtls_asn1_write_bitstring()
336     *--(*p) = (unsigned char) unused_bits;  in mbedtls_asn1_write_bitstring()
338     return mbedtls_asn1_write_len_and_tag(p, start, len, MBEDTLS_ASN1_BIT_STRING);  in mbedtls_asn1_write_bitstring()
341 int mbedtls_asn1_write_octet_string(unsigned char **p, const unsigned char *start,  in mbedtls_asn1_write_octet_string()  argument
347     MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_raw_buffer(p, start, buf, size));  in mbedtls_asn1_write_octet_string()
349     return mbedtls_asn1_write_len_and_tag(p, start, len, MBEDTLS_ASN1_OCTET_STRING);  in mbedtls_asn1_write_octet_string()
361         if (list->oid.len == len &&  in asn1_find_named_data()
362             memcmp(list->oid.p, oid, len) == 0) {  in asn1_find_named_data()
366         list = list->next;  in asn1_find_named_data()
393         cur->oid.len = oid_len;  in mbedtls_asn1_store_named_data()
394         cur->oid.p = mbedtls_calloc(1, oid_len);  in mbedtls_asn1_store_named_data()
395         if (cur->oid.p == NULL) {  in mbedtls_asn1_store_named_data()
400         memcpy(cur->oid.p, oid, oid_len);  in mbedtls_asn1_store_named_data()
402         cur->val.len = val_len;  in mbedtls_asn1_store_named_data()
404             cur->val.p = mbedtls_calloc(1, val_len);  in mbedtls_asn1_store_named_data()
405             if (cur->val.p == NULL) {  in mbedtls_asn1_store_named_data()
406                 mbedtls_free(cur->oid.p);  in mbedtls_asn1_store_named_data()
412         cur->next = *head;  in mbedtls_asn1_store_named_data()
415         mbedtls_free(cur->val.p);  in mbedtls_asn1_store_named_data()
416         cur->val.p = NULL;  in mbedtls_asn1_store_named_data()
417         cur->val.len = 0;  in mbedtls_asn1_store_named_data()
418     } else if (cur->val.len != val_len) {  in mbedtls_asn1_store_named_data()
424         void *p = mbedtls_calloc(1, val_len);  in mbedtls_asn1_store_named_data()  local
425         if (p == NULL) {  in mbedtls_asn1_store_named_data()
429         mbedtls_free(cur->val.p);  in mbedtls_asn1_store_named_data()
430         cur->val.p = p;  in mbedtls_asn1_store_named_data()
431         cur->val.len = val_len;  in mbedtls_asn1_store_named_data()
435         memcpy(cur->val.p, val, val_len);  in mbedtls_asn1_store_named_data()