+++ /dev/null
-/*
- * X.509 certificate and private key writing
- *
- * Copyright (C) 2006-2007 Pascal Vizeli <pvizeli@yahoo.de>
- * Modifications (C) 2009 Steven Barth <steven@midlink.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License, version 2.1 as published by the Free Software Foundation.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- * MA 02110-1301 USA
- */
-/*
- * The ITU-T X.509 standard defines a certificat format for PKI.
- *
- * http://www.ietf.org/rfc/rfc2459.txt
- * http://www.ietf.org/rfc/rfc3279.txt
- *
- * ftp://ftp.rsasecurity.com/pub/pkcs/ascii/pkcs-1v2.asc
- *
- * http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf
- * http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf
- *
- * For CRS:
- * http://www.faqs.org/rfcs/rfc2314.html
- */
-#include "polarssl/config.h"
-#include "polarssl/x509.h"
-#include "polarssl/base64.h"
-#include "polarssl/sha1.h"
-
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <time.h>
-
-#define and &&
-#define or ||
-
-#if defined _MSC_VER && !defined snprintf
-#define snprintf _snprintf
-#endif
-
-static int x509write_realloc_node(x509_node *node, size_t larger);
-static int x509write_file(x509_node *node, char *path, int format, const char* pem_prolog, const char* pem_epilog);
-
-/*
- * evaluate how mani octet have this integer
- */
-static int asn1_eval_octet(unsigned int digit)
-{
- int i, byte;
-
- for (byte = 4, i = 24; i >= 0; i -= 8, --byte)
- if (((digit >> i) & 0xFF) != 0)
- return byte;
-
- return 0;
-}
-
-/*
- * write the asn.1 lenght form into p
- */
-static int asn1_add_len(unsigned int size, x509_node *node)
-{
- if (size > 127) {
-
- /* long size */
- int byte = asn1_eval_octet(size);
- int i = 0;
-
- *(node->p) = (0x80 | byte) & 0xFF;
- ++node->p;
-
- for (i = byte; i > 0; --i) {
-
- *(node->p) = (size >> ((i - 1) * 8)) & 0xFF;
- ++node->p;
- }
-
- } else {
-
- /* short size */
- *(node->p) = size & 0xFF;
- if (size != 0)
- ++node->p;
- }
-
- return 0;
-}
-
-/*
- * write a ans.1 object into p
- */
-static int asn1_add_obj(unsigned char *value, unsigned int size, int tag,
- x509_node *node)
-{
- int tl = 2;
-
- if (tag == ASN1_BIT_STRING)
- ++tl;
-
- if (size > 127)
- x509write_realloc_node(node, (size_t) size + tl +
- asn1_eval_octet(size));
- else
- x509write_realloc_node(node, (size_t) size + tl);
-
- if (node->data == NULL)
- return 1;
-
- /* tag */
- *(node->p) = tag & 0xFF;
- ++node->p;
-
- /* len */
- if (tag == ASN1_BIT_STRING) {
- asn1_add_len((unsigned int) size + 1, node);
- *(node->p) = 0x00;
- ++node->p;
- } else {
- asn1_add_len((unsigned int) size, node);
- }
-
- /* value */
- if (size > 0) {
-
- memcpy(node->p, value, (size_t) size);
- if ((node->p += size -1) != node->end)
- return POLARSSL_ERR_X509_POINT_ERROR;
- } else {
- /* make nothing -> NULL */
- }
-
- return 0;
-}
-
-/*
- * write a asn.1 conform integer object
- */
-static int asn1_add_int(signed int value, x509_node *node)
-{
- signed int i = 0, neg = 1;
- unsigned int byte, u_val = 0, tmp_val = 0;
-
- /* if negate? */
- if (value < 0) {
- neg = -1;
- u_val = ~value;
- } else {
- u_val = value;
- }
-
- byte = asn1_eval_octet(u_val);
- /* 0 isn't NULL */
- if (byte == 0)
- byte = 1;
-
- /* ASN.1 integer is signed! */
- if (byte < 4 and ((u_val >> ((byte -1) * 8)) & 0xFF) == 0x80)
- byte += 1;
-
- if (x509write_realloc_node(node, (size_t) byte + 2) != 0)
- return 1;
-
- /* tag */
- *(node->p) = ASN1_INTEGER;
- ++node->p;
-
- /* len */
- asn1_add_len(byte, node);
-
- /* value */
- for (i = byte; i > 0; --i) {
-
- tmp_val = (u_val >> ((i - 1) * 8)) & 0xFF;
- if (neg == 1)
- *(node->p) = tmp_val;
- else
- *(node->p) = ~tmp_val;
-
- if (i > 1)
- ++node->p;
- }
-
- if (node->p != node->end)
- return POLARSSL_ERR_X509_POINT_ERROR;
-
- return 0;
-}
-
-/*
- * write a asn.1 conform mpi object
- */
-static int asn1_add_mpi(mpi *value, int tag, x509_node *node)
-{
- size_t size = (mpi_msb(value) / 8) + 1;
- unsigned char *buf;
- int buf_len = (int) size, tl = 2;
-
- if (tag == ASN1_BIT_STRING)
- ++tl;
-
- if (size > 127)
- x509write_realloc_node(node, size + (size_t) tl +
- asn1_eval_octet((unsigned int)size));
- else
- x509write_realloc_node(node, size + (size_t) tl);
-
- if (node->data == NULL)
- return 1;
-
- buf = (unsigned char*) malloc(size);
- if (mpi_write_binary(value, buf, buf_len) != 0)
- return POLARSSL_ERR_MPI_BUFFER_TOO_SMALL;
-
- /* tag */
- *(node->p) = tag & 0xFF;
- ++node->p;
-
- /* len */
- if (tag == ASN1_BIT_STRING) {
- asn1_add_len((unsigned int) size + 1, node);
- *(node->p) = 0x00;
- ++node->p;
- } else {
- asn1_add_len((unsigned int) size, node);
- }
-
- /* value */
- memcpy(node->p, buf, size);
- free(buf);
-
- if ((node->p += (int) size -1) != node->end)
- return POLARSSL_ERR_X509_POINT_ERROR;
-
- return 0;
-}
-
-/*
- * write a node into asn.1 conform object
- */
-static int asn1_append_tag(x509_node *node, int tag)
-{
- int tl = 2;
-
- x509_node tmp;
- x509write_init_node(&tmp);
-
- if (tag == ASN1_BIT_STRING)
- ++tl;
-
- if (node->len > 127)
- x509write_realloc_node(&tmp, node->len + (size_t) tl +
- asn1_eval_octet((unsigned int)node->len));
- else
- x509write_realloc_node(&tmp, node->len + (size_t) tl);
-
- if (tmp.data == NULL) {
- x509write_free_node(&tmp);
- return 1;
- }
-
- /* tag */
- *(tmp.p) = tag & 0xFF;
- ++tmp.p;
-
- /* len */
- if (tag == ASN1_BIT_STRING) {
- asn1_add_len((unsigned int) node->len + 1, &tmp);
- *(tmp.p) = 0x00;
- ++tmp.p;
- } else {
- asn1_add_len((unsigned int) node->len, &tmp);
- }
-
- /* value */
- memcpy(tmp.p, node->data, node->len);
-
- /* good? */
- if ((tmp.p += (int) node->len -1) != tmp.end) {
- x509write_free_node(&tmp);
- return POLARSSL_ERR_X509_POINT_ERROR;
- }
-
- free(node->data);
- node->data = tmp.data;
- node->p = tmp.p;
- node->end = tmp.end;
- node->len = tmp.len;
-
- return 0;
-}
-
-/*
- * write nodes into a asn.1 object
- */
-static int asn1_append_nodes(x509_node *node, int tag, int anz, ...)
-{
- va_list ap;
- size_t size = 0;
- x509_node *tmp;
- int count;
-
- va_start(ap, anz);
- count = anz;
-
- while (count--) {
-
- tmp = va_arg(ap, x509_node*);
- if (tmp->data != NULL)
- size += tmp->len;
- }
-
- if ( size > 127) {
- if (x509write_realloc_node(node, size + (size_t) 2 +
- asn1_eval_octet(size)) != 0)
- return 1;
- } else {
- if (x509write_realloc_node(node, size + (size_t) 2) != 0)
- return 1;
- }
-
- /* tag */
- *(node->p) = tag & 0xFF;
- ++node->p;
-
- /* len */
- asn1_add_len(size, node);
-
- /* value */
- va_start(ap, anz);
- count = anz;
-
- while (count--) {
-
- tmp = va_arg(ap, x509_node*);
- if (tmp->data != NULL) {
-
- memcpy(node->p, tmp->data, tmp->len);
- if ((node->p += (int) tmp->len -1) != node->end)
- ++node->p;
- }
- }
-
- va_end(ap);
- return 0;
-}
-
-/*
- * write a ASN.1 conform object identifiere include a "tag"
- */
-static int asn1_add_oid(x509_node *node, unsigned char *oid, size_t len,
- int tag, int tag_val, unsigned char *value, size_t val_len)
-{
- int ret;
- x509_node tmp;
-
- x509write_init_node(&tmp);
-
- /* OBJECT IDENTIFIER */
- if ((ret = asn1_add_obj(oid, len, ASN1_OID, &tmp)) != 0) {
- x509write_free_node(&tmp);
- return ret;
- }
-
- /* value */
- if ((ret = asn1_add_obj(value, val_len, tag_val, &tmp)) != 0) {
- x509write_free_node(&tmp);
- return ret;
- }
-
- /* SET/SEQUENCE */
- if ((ret = asn1_append_nodes(node, tag, 1, &tmp)) != 0) {
- x509write_free_node(&tmp);
- return ret;
- }
-
- x509write_free_node(&tmp);
- return 0;
-}
-
-/*
- * utcTime UTCTime
- */
-static int asn1_add_date_utc(unsigned char *time, x509_node *node)
-{
- unsigned char date[13], *sp;
- x509_time xtime;
- int ret;
-
- sscanf((char*)time, "%d-%d-%d %d:%d:%d", &xtime.year, &xtime.mon,
- &xtime.day, &xtime.hour, &xtime.min, &xtime.sec);
-
- /* convert to YY */
- if (xtime.year > 2000)
- xtime.year -= 2000;
- else
- xtime.year -= 1900;
-
- snprintf((char*)date, 13, "%2d%2d%2d%2d%2d%2d", xtime.year, xtime.mon, xtime.day,
- xtime.hour, xtime.min, xtime.sec);
-
- /* replace ' ' to '0' */
- for (sp = date; *sp != '\0'; ++sp)
- if (*sp == '\x20')
- *sp = '\x30';
-
- date[12] = 'Z';
-
- if ((ret = asn1_add_obj(date, 13, ASN1_UTC_TIME, node)) != 0)
- return ret;
-
- return 0;
-}
-
-/*
- * serialize an rsa key into DER
- */
-
-int x509write_serialize_key(rsa_context *rsa, x509_node *node)
-{
- int ret = 0;
- x509write_init_node(node);
-
- /* vers, n, e, d, p, q, dp, dq, pq */
- if ((ret = asn1_add_int(rsa->ver, node)) != 0)
- return ret;
- if ((ret = asn1_add_mpi(&rsa->N, ASN1_INTEGER, node)) != 0)
- return ret;
- if ((ret = asn1_add_mpi(&rsa->E, ASN1_INTEGER, node)) != 0)
- return ret;
- if ((ret = asn1_add_mpi(&rsa->D, ASN1_INTEGER, node)) != 0)
- return ret;
- if ((ret = asn1_add_mpi(&rsa->P, ASN1_INTEGER, node)) != 0)
- return ret;
- if ((ret = asn1_add_mpi(&rsa->Q, ASN1_INTEGER, node)) != 0)
- return ret;
- if ((ret = asn1_add_mpi(&rsa->DP, ASN1_INTEGER, node)) != 0)
- return ret;
- if ((ret = asn1_add_mpi(&rsa->DQ, ASN1_INTEGER, node)) != 0)
- return ret;
- if ((ret = asn1_add_mpi(&rsa->QP, ASN1_INTEGER, node)) != 0)
- return ret;
- if ((ret = asn1_append_tag(node, ASN1_CONSTRUCTED | ASN1_SEQUENCE)) != 0)
- return ret;
-
- return 0;
-}
-
-/*
- * write a der/pem encoded rsa private key into a file
- */
-int x509write_keyfile(rsa_context *rsa, char *path, int out_flag)
-{
- int ret = 0;
- const char key_beg[] = "-----BEGIN RSA PRIVATE KEY-----\n",
- key_end[] = "-----END RSA PRIVATE KEY-----\n";
- x509_node node;
-
- x509write_init_node(&node);
- if ((ret = x509write_serialize_key(rsa,&node)) != 0) {
- x509write_free_node(&node);
- return ret;
- }
-
- ret = x509write_file(&node,path,out_flag,key_beg,key_end);
- x509write_free_node(&node);
-
- return ret;
-}
-
-
-/*
- * reasize the memory for node
- */
-static int x509write_realloc_node(x509_node *node, size_t larger)
-{
- /* init len */
- if (node->data == NULL) {
- node->len = 0;
- node->data = malloc(larger);
- if(node->data == NULL)
- return 1;
- } else {
- /* realloc memory */
- if ((node->data = realloc(node->data, node->len + larger)) == NULL)
- return 1;
- }
-
- /* init pointer */
- node->p = &node->data[node->len];
- node->len += larger;
- node->end = &node->data[node->len -1];
-
- return 0;
-}
-
-/*
- * init node
- */
-void x509write_init_node(x509_node *node)
-{
- memset(node, 0, sizeof(x509_node));
-}
-
-/*
- * clean memory
- */
-void x509write_free_node(x509_node *node)
-{
- if (node->data != NULL)
- free(node->data);
- node->p = NULL;
- node->end = NULL;
- node->len = 0;
-}
-
-/*
- * write a x509 certificate into file
- */
-int x509write_crtfile(x509_raw *chain, unsigned char *path, int out_flag)
-{
- const char cer_beg[] = "-----BEGIN CERTIFICATE-----\n",
- cer_end[] = "-----END CERTIFICATE-----\n";
-
- return x509write_file(&chain->raw, (char*)path, out_flag, cer_beg, cer_end);
-}
-
-/*
- * write a x509 certificate into file
- */
-int x509write_csrfile(x509_raw *chain, unsigned char *path, int out_flag)
-{
- const char cer_beg[] = "-----BEGIN CERTIFICATE REQUEST-----\n",
- cer_end[] = "-----END CERTIFICATE REQUEST-----\n";
-
- return x509write_file(&chain->raw, (char*)path, out_flag, cer_beg, cer_end);
-}
-
-/*
- * write an x509 file
- */
-static int x509write_file(x509_node *node, char *path, int format,
- const char* pem_prolog, const char* pem_epilog)
-{
- FILE *ofstream = stdout;
- int is_err = 1, buf_len, i, n;
- unsigned char* base_buf;
-
- if (path) {
- if ((ofstream = fopen(path, "wb")) == NULL)
- return 1;
- }
-
- switch (format) {
- case X509_OUTPUT_DER:
- if (fwrite(node->data, 1, node->len, ofstream)
- != node->len)
- is_err = -1;
- break;
-
- case X509_OUTPUT_PEM:
- if (fprintf(ofstream,pem_prolog)<0) {
- is_err = -1;
- break;
- }
-
- buf_len = node->len << 1;
- base_buf = (unsigned char*) malloc((size_t)buf_len);
- memset(base_buf,0,buf_len);
- if (base64_encode(base_buf, &buf_len, node->data,
- (int) node->len) != 0) {
- is_err = -1;
- break;
- }
-
- n=strlen((char*)base_buf);
- for(i=0;i<n;i+=64) {
- fprintf(ofstream,"%.64s\n",&base_buf[i]);
- }
-
- if (fprintf(ofstream, pem_epilog)<0) {
- is_err = -1;
- break;
- }
-
- free(base_buf);
- }
-
- fclose(ofstream);
-
- if (is_err == -1)
- return 1;
-
- return 0;
-}
-
-
-/*
- * add the owner public key to x509 certificate
- */
-int x509write_add_pubkey(x509_raw *chain, rsa_context *pubkey)
-{
- x509_node n_tmp, n_tmp2, *node;
- int ret;
-
- node = &chain->subpubkey;
-
- x509write_init_node(&n_tmp);
- x509write_init_node(&n_tmp2);
-
- /*
- * RSAPublicKey ::= SEQUENCE {
- * modulus INTEGER, -- n
- * publicExponent INTEGER -- e
- * }
- */
- if ((ret = asn1_add_mpi(&pubkey->N, ASN1_INTEGER, &n_tmp)) != 0) {
- x509write_free_node(&n_tmp);
- x509write_free_node(&n_tmp2);
- return ret;
- }
- if ((ret = asn1_add_mpi(&pubkey->E, ASN1_INTEGER, &n_tmp)) != 0) {
- x509write_free_node(&n_tmp);
- x509write_free_node(&n_tmp2);
- return ret;
- }
- if ((ret = asn1_append_tag(&n_tmp, ASN1_CONSTRUCTED | ASN1_SEQUENCE))
- != 0) {
- x509write_free_node(&n_tmp);
- x509write_free_node(&n_tmp2);
- return ret;
- }
-
- /*
- * SubjectPublicKeyInfo ::= SEQUENCE {
- * algorithm AlgorithmIdentifier,
- * subjectPublicKey BIT STRING }
- */
- if ((ret = asn1_append_tag(&n_tmp, ASN1_BIT_STRING)) != 0) {
- x509write_free_node(&n_tmp);
- x509write_free_node(&n_tmp2);
- return ret;
- }
- if ((ret = asn1_add_oid(&n_tmp2, (unsigned char*)OID_PKCS1_RSA, 9,
- ASN1_CONSTRUCTED | ASN1_SEQUENCE, ASN1_NULL,
- (unsigned char *)"", 0)) != 0) {
- x509write_free_node(&n_tmp);
- x509write_free_node(&n_tmp2);
- return ret;
- }
-
- if ((ret = asn1_append_nodes(node, ASN1_CONSTRUCTED | ASN1_SEQUENCE, 2,
- &n_tmp2, &n_tmp))) {
- x509write_free_node(&n_tmp);
- x509write_free_node(&n_tmp2);
- return ret;
- }
-
- x509write_free_node(&n_tmp);
- x509write_free_node(&n_tmp2);
- return 0;
-}
-
-/*
- * RelativeDistinguishedName ::=
- * SET OF AttributeTypeAndValue
- *
- * AttributeTypeAndValue ::= SEQUENCE {
- * type AttributeType,
- * value AttributeValue }
- */
-static int x509write_add_name(x509_node *node, unsigned char *oid,
- unsigned int oid_len, unsigned char *value, int len, int value_tag)
-{
- int ret;
- x509_node n_tmp;
-
- x509write_init_node(&n_tmp);
-
- if ((ret = asn1_add_oid(&n_tmp, oid, oid_len,
- ASN1_CONSTRUCTED | ASN1_SEQUENCE, value_tag,
- value, len))) {
- x509write_free_node(&n_tmp);
- return ret;
- }
-
- if ((asn1_append_nodes(node, ASN1_CONSTRUCTED | ASN1_SET, 1, &n_tmp))
- != 0) {
- x509write_free_node(&n_tmp);
- return ret;
- }
-
- x509write_free_node(&n_tmp);
- return 0;
-}
-
-/*
- * Parse the name string and add to node
- */
-static int x509write_parse_names(x509_node *node, unsigned char *names)
-{
- unsigned char *sp, *begin = NULL;
- unsigned char oid[3] = OID_X520, tag[4], *tag_sp = tag;
- unsigned char *C = NULL, *CN = NULL, *O = NULL, *OU = NULL,
- *ST = NULL, *L = NULL, *R = NULL;
- int C_len = 0, CN_len = 0, O_len = 0, OU_len = 0, ST_len = 0,
- L_len = 0, R_len = 0;
- int ret = 0, is_tag = 1, is_begin = -1, len = 0;
-
-
- for (sp = names; ; ++sp) {
-
- /* filter tag */
- if (is_tag == 1) {
-
- if (tag_sp == &tag[3])
- return POLARSSL_ERR_X509_VALUE_TO_LENGTH;
-
- /* is tag end? */
- if (*sp == '=') {
- is_tag = -1;
- *tag_sp = '\0';
- is_begin = 1;
- /* set len 0 (reset) */
- len = 0;
- } else {
- /* tag hasn't ' '! */
- if (*sp != ' ') {
- *tag_sp = *sp;
- ++tag_sp;
- }
- }
- /* filter value */
- } else {
-
- /* set pointer of value begin */
- if (is_begin == 1) {
- begin = sp;
- is_begin = -1;
- }
-
- /* is value at end? */
- if (*sp == ';' or *sp == '\0') {
- is_tag = 1;
-
- /* common name */
- if (tag[0] == 'C' and tag[1] == 'N') {
- CN = begin;
- CN_len = len;
-
- /* organization */
- } else if (tag[0] == 'O' and tag[1] == '\0') {
- O = begin;
- O_len = len;
-
- /* country */
- } else if (tag[0] == 'C' and tag[1] == '\0') {
- C = begin;
- C_len = len;
-
- /* organisation unit */
- } else if (tag[0] == 'O' and tag[1] == 'U') {
- OU = begin;
- OU_len = len;
-
- /* state */
- } else if (tag[0] == 'S' and tag[1] == 'T') {
- ST = begin;
- ST_len = len;
-
- /* locality */
- } else if (tag[0] == 'L' and tag[1] == '\0') {
- L = begin;
- L_len = len;
-
- /* email */
- } else if (tag[0] == 'R' and tag[1] == '\0') {
- R = begin;
- R_len = len;
- }
-
- /* set tag poiner to begin */
- tag_sp = tag;
-
- /* is at end? */
- if (*sp == '\0' or *(sp +1) == '\0')
- break;
- } else {
- ++len;
- }
- }
-
- /* make saver */
- if (*sp == '\0')
- break;
- } /* end for */
-
- /* country */
- if (C != NULL) {
- oid[2] = X520_COUNTRY;
- if ((ret = x509write_add_name(node, oid, 3, C, C_len,
- ASN1_PRINTABLE_STRING)) != 0)
- return ret;
- }
-
- /* state */
- if (ST != NULL) {
- oid[2] = X520_STATE;
- if ((ret = x509write_add_name(node, oid, 3, ST, ST_len,
- ASN1_PRINTABLE_STRING)) != 0)
- return ret;
- }
-
- /* locality */
- if (L != NULL) {
- oid[2] = X520_LOCALITY;
- if ((ret = x509write_add_name(node, oid, 3, L, L_len,
- ASN1_PRINTABLE_STRING)) != 0)
- return ret;
- }
-
- /* organization */
- if (O != NULL) {
- oid[2] = X520_ORGANIZATION;
- if ((ret = x509write_add_name(node, oid, 3, O, O_len,
- ASN1_PRINTABLE_STRING)) != 0)
- return ret;
- }
-
- /* organisation unit */
- if (OU != NULL) {
- oid[2] = X520_ORG_UNIT;
- if ((ret = x509write_add_name(node, oid, 3, OU, OU_len,
- ASN1_PRINTABLE_STRING)) != 0)
- return ret;
- }
-
- /* common name */
- if (CN != NULL) {
- oid[2] = X520_COMMON_NAME;
- if ((ret = x509write_add_name(node, oid, 3, CN, CN_len,
- ASN1_PRINTABLE_STRING)) != 0)
- return ret;
- }
-
- /* email */
- if (R != NULL) {
- if ((ret = x509write_add_name(node, (unsigned char*)OID_PKCS9_EMAIL,
- 9, R, R_len, ASN1_IA5_STRING)) != 0)
- return ret;
- }
-
- if ((asn1_append_tag(node, ASN1_CONSTRUCTED | ASN1_SEQUENCE)) != 0)
- return ret;
-
- return 0;
-}
-
-/*
- * Copy raw data from orginal ca to node
- */
-static int x509write_copy_from_raw(x509_node *node, x509_buf *raw)
-{
- if (x509write_realloc_node(node, raw->len) != 0)
- return 1;
-
- memcpy(node->p, raw->p, (size_t)raw->len);
- if ((node->p += raw->len -1) != node->end)
- return POLARSSL_ERR_X509_POINT_ERROR;
-
- return 0;
-}
-
-/*
- * Add the issuer
- */
-
-int x509write_add_issuer(x509_raw *crt, unsigned char *issuer)
-{
- return x509write_parse_names(&crt->issuer, issuer);
-}
-
-/*
- * Add the subject
- */
-int x509write_add_subject(x509_raw *crt, unsigned char *subject)
-{
- return x509write_parse_names(&crt->subject, subject);
-}
-
-/*
- * Copy issuer line from another cert to issuer
- */
-int x509write_copy_issuer(x509_raw *crt, x509_cert *from_crt)
-{
- return x509write_copy_from_raw(&crt->issuer, &from_crt->issuer_raw);
-}
-
-/*
- * Copy subject line from another cert
- */
-int x509write_copy_subject(x509_raw *crt, x509_cert *from_crt)
-{
- return x509write_copy_from_raw(&crt->subject, &from_crt->subject_raw);
-}
-
-/*
- * Copy subject line form antoher cert into issuer
- */
-int x509write_copy_issuer_form_subject(x509_raw *crt,
- x509_cert *from_crt)
-{
- return x509write_copy_from_raw(&crt->issuer, &from_crt->subject_raw);
-}
-
-/*
- * Copy issuer line from another cert into subject
- */
-int x509write_copy_subject_from_issuer(x509_raw *crt,
- x509_cert * from_crt)
-{
- return x509write_copy_from_raw(&crt->subject, &from_crt->issuer_raw);
-}
-
-/*
- * Validity ::= SEQUENCE {
- * notBefore Time,
- * notAfter Time }
- *
- * Time ::= CHOICE {
- * utcTime UTCTime,
- * generalTime GeneralizedTime }
- */
-/* TODO: No handle GeneralizedTime! */
-int x509write_add_validity(x509_raw *chain, unsigned char *befor,
- unsigned char *after)
-{
- int ret;
-
- x509_node *node = &chain->validity;
-
- /* notBefore */
- if ((ret = asn1_add_date_utc(befor, node)) != 0)
- return ret;
-
- /* notAfter */
- if ((ret = asn1_add_date_utc(after, node)) != 0)
- return ret;
-
- if ((ret = asn1_append_tag(node, ASN1_CONSTRUCTED | ASN1_SEQUENCE)) != 0)
- return ret;
-
- return 0;
-}
-
-/*
- * make hash from tbs and sign that with private key
- */
-static int x509write_make_sign(x509_raw *chain, rsa_context *privkey)
-{
- int ret;
- unsigned char hash[20], *sign;
- size_t sign_len = (size_t) mpi_size(&privkey->N);
-
- /* make hash */
- sha1(chain->tbs.data, chain->tbs.len, hash);
-
- /* create sign */
- sign = (unsigned char *) malloc(sign_len);
- if (sign == NULL)
- return 1;
-
- if ((ret = rsa_pkcs1_sign(privkey, RSA_PRIVATE, RSA_SHA1, 20, hash,
- sign)) != 0)
- return ret;
-
- if ((ret = asn1_add_obj(sign, sign_len, ASN1_BIT_STRING,
- &chain->sign)) != 0)
- return ret;
-
- /*
- * AlgorithmIdentifier ::= SEQUENCE {
- * algorithm OBJECT IDENTIFIER,
- * parameters ANY DEFINED BY algorithm OPTIONAL }
- */
- return asn1_add_oid(&chain->signalg, (unsigned char*)OID_PKCS1_RSA_SHA, 9,
- ASN1_CONSTRUCTED | ASN1_SEQUENCE, ASN1_NULL,
- (unsigned char*)"", 0);
-}
-
-/*
- * Create a self signed certificate
- */
-int x509write_create_sign(x509_raw *chain, rsa_context *privkey)
-{
- int ret, serial;
-
- /*
- * Version ::= INTEGER { v1(0), v2(1), v3(2) }
- */
- if ((ret = asn1_add_int(2, &chain->version)) != 0)
- return ret;
-
- if ((ret = asn1_append_tag(&chain->version, ASN1_CONTEXT_SPECIFIC |
- ASN1_CONSTRUCTED)) != 0)
- return ret;
-
-
- /*
- * CertificateSerialNumber ::= INTEGER
- */
- srand((unsigned int) time(NULL));
- serial = rand();
- if ((ret = asn1_add_int(serial, &chain->serial)) != 0)
- return ret;
-
- /*
- * AlgorithmIdentifier ::= SEQUENCE {
- * algorithm OBJECT IDENTIFIER,
- * parameters ANY DEFINED BY algorithm OPTIONAL }
- */
- if ((ret = asn1_add_oid(&chain->tbs_signalg,
- (unsigned char*)OID_PKCS1_RSA_SHA, 9, ASN1_CONSTRUCTED |
- ASN1_SEQUENCE, ASN1_NULL, (unsigned char*)"", 0)) != 0)
- return ret;
-
- /*
- * Create the tbs
- */
- if ((ret = asn1_append_nodes(&chain->tbs, ASN1_CONSTRUCTED |
- ASN1_SEQUENCE, 7, &chain->version, &chain->serial,
- &chain->tbs_signalg, &chain->issuer, &chain->validity,
- &chain->subject, &chain->subpubkey)) != 0)
- return ret;
-
- /* make signing */
- if ((ret = x509write_make_sign(chain, privkey)) != 0)
- return ret;
-
- /* finishing */
- if ((ret = asn1_append_nodes(&chain->raw, ASN1_CONSTRUCTED |
- ASN1_SEQUENCE, 3, &chain->tbs, &chain->signalg,
- &chain->sign)) != 0)
- return ret;
-
- return 0;
-}
-
-int x509write_create_selfsign(x509_raw *chain, rsa_context *privkey)
-{
- /*
- * On self signed certificate are subject and issuer the same
- */
- x509write_free_node(&chain->issuer);
- chain->issuer = chain->subject;
- return x509write_create_sign(chain, privkey);
-}
-
-/*
- * CertificationRequestInfo ::= SEQUENCE {
- * version Version,
- * subject Name,
- * subjectPublicKeyInfo SubjectPublicKeyInfo,
- * attributes [0] IMPLICIT Attributes }
- *
- * CertificationRequest ::= SEQUENCE {
- * certificationRequestInfo CertificationRequestInfo,
- * signatureAlgorithm SignatureAlgorithmIdentifier,
- * signature Signature }
- *
- * It use chain.serail for attributes!
- *
- */
-int x509write_create_csr(x509_raw *chain, rsa_context *privkey)
-{
- int ret;
-
- /* version ::= INTEGER */
- if ((ret = asn1_add_int(0, &chain->version)) != 0)
- return ret;
-
- /* write attributes */
- if ((ret = asn1_add_obj((unsigned char*)"", 0, ASN1_CONTEXT_SPECIFIC |
- ASN1_CONSTRUCTED, &chain->serial)) != 0)
- return ret;
-
- /* create CertificationRequestInfo */
- if ((ret = asn1_append_nodes(&chain->tbs, ASN1_CONSTRUCTED |
- ASN1_SEQUENCE, 4, &chain->version, &chain->subject,
- &chain->subpubkey, &chain->serial)) != 0)
- return ret;
-
- /* make signing */
- if ((ret = x509write_make_sign(chain, privkey)) != 0)
- return ret;
-
- /* finish */
- if ((ret = asn1_append_nodes(&chain->raw, ASN1_CONSTRUCTED | ASN1_SEQUENCE,
- 3, &chain->tbs, &chain->signalg, &chain->sign)) != 0)
- return ret;
-
- return ret;
-}
-
-/*
- * Free memory
- */
-void x509write_free_raw(x509_raw *chain)
-{
- x509write_free_node(&chain->raw);
- x509write_free_node(&chain->tbs);
- x509write_free_node(&chain->version);
- x509write_free_node(&chain->serial);
- x509write_free_node(&chain->tbs_signalg);
- x509write_free_node(&chain->issuer);
- x509write_free_node(&chain->validity);
- if (chain->subject.data != chain->issuer.data)
- x509write_free_node(&chain->subject);
- x509write_free_node(&chain->subpubkey);
- x509write_free_node(&chain->signalg);
- x509write_free_node(&chain->sign);
-}
-
-void x509write_init_raw(x509_raw *chain)
-{
- memset((void *) chain, 0, sizeof(x509_raw));
-}
-
projects / project / luci.git / blobdiff