diff options
Diffstat (limited to 'lib/mbedtls-2.27.0/library/x509write_crt.c')
| -rw-r--r-- | lib/mbedtls-2.27.0/library/x509write_crt.c | 544 |
1 files changed, 0 insertions, 544 deletions
diff --git a/lib/mbedtls-2.27.0/library/x509write_crt.c b/lib/mbedtls-2.27.0/library/x509write_crt.c deleted file mode 100644 index 8f4a4f5..0000000 --- a/lib/mbedtls-2.27.0/library/x509write_crt.c +++ /dev/null @@ -1,544 +0,0 @@ -/* - * X.509 certificate writing - * - * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 - * - * Licensed under the Apache License, Version 2.0 (the "License"); you may - * not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT - * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/* - * References: - * - certificates: RFC 5280, updated by RFC 6818 - * - CSRs: PKCS#10 v1.7 aka RFC 2986 - * - attributes: PKCS#9 v2.0 aka RFC 2985 - */ - -#include "common.h" - -#if defined(MBEDTLS_X509_CRT_WRITE_C) - -#include "mbedtls/x509_crt.h" -#include "mbedtls/asn1write.h" -#include "mbedtls/error.h" -#include "mbedtls/oid.h" -#include "mbedtls/platform_util.h" -#include "mbedtls/sha1.h" - -#include <string.h> - -#if defined(MBEDTLS_PEM_WRITE_C) -#include "mbedtls/pem.h" -#endif /* MBEDTLS_PEM_WRITE_C */ - -void mbedtls_x509write_crt_init( mbedtls_x509write_cert *ctx ) -{ - memset( ctx, 0, sizeof( mbedtls_x509write_cert ) ); - - mbedtls_mpi_init( &ctx->serial ); - ctx->version = MBEDTLS_X509_CRT_VERSION_3; -} - -void mbedtls_x509write_crt_free( mbedtls_x509write_cert *ctx ) -{ - mbedtls_mpi_free( &ctx->serial ); - - mbedtls_asn1_free_named_data_list( &ctx->subject ); - mbedtls_asn1_free_named_data_list( &ctx->issuer ); - mbedtls_asn1_free_named_data_list( &ctx->extensions ); - - mbedtls_platform_zeroize( ctx, sizeof( mbedtls_x509write_cert ) ); -} - -void mbedtls_x509write_crt_set_version( mbedtls_x509write_cert *ctx, - int version ) -{ - ctx->version = version; -} - -void mbedtls_x509write_crt_set_md_alg( mbedtls_x509write_cert *ctx, - mbedtls_md_type_t md_alg ) -{ - ctx->md_alg = md_alg; -} - -void mbedtls_x509write_crt_set_subject_key( mbedtls_x509write_cert *ctx, - mbedtls_pk_context *key ) -{ - ctx->subject_key = key; -} - -void mbedtls_x509write_crt_set_issuer_key( mbedtls_x509write_cert *ctx, - mbedtls_pk_context *key ) -{ - ctx->issuer_key = key; -} - -int mbedtls_x509write_crt_set_subject_name( mbedtls_x509write_cert *ctx, - const char *subject_name ) -{ - return mbedtls_x509_string_to_names( &ctx->subject, subject_name ); -} - -int mbedtls_x509write_crt_set_issuer_name( mbedtls_x509write_cert *ctx, - const char *issuer_name ) -{ - return mbedtls_x509_string_to_names( &ctx->issuer, issuer_name ); -} - -int mbedtls_x509write_crt_set_serial( mbedtls_x509write_cert *ctx, - const mbedtls_mpi *serial ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - - if( ( ret = mbedtls_mpi_copy( &ctx->serial, serial ) ) != 0 ) - return( ret ); - - return( 0 ); -} - -int mbedtls_x509write_crt_set_validity( mbedtls_x509write_cert *ctx, - const char *not_before, - const char *not_after ) -{ - if( strlen( not_before ) != MBEDTLS_X509_RFC5280_UTC_TIME_LEN - 1 || - strlen( not_after ) != MBEDTLS_X509_RFC5280_UTC_TIME_LEN - 1 ) - { - return( MBEDTLS_ERR_X509_BAD_INPUT_DATA ); - } - strncpy( ctx->not_before, not_before, MBEDTLS_X509_RFC5280_UTC_TIME_LEN ); - strncpy( ctx->not_after , not_after , MBEDTLS_X509_RFC5280_UTC_TIME_LEN ); - ctx->not_before[MBEDTLS_X509_RFC5280_UTC_TIME_LEN - 1] = 'Z'; - ctx->not_after[MBEDTLS_X509_RFC5280_UTC_TIME_LEN - 1] = 'Z'; - - return( 0 ); -} - -int mbedtls_x509write_crt_set_extension( mbedtls_x509write_cert *ctx, - const char *oid, size_t oid_len, - int critical, - const unsigned char *val, size_t val_len ) -{ - return( mbedtls_x509_set_extension( &ctx->extensions, oid, oid_len, - critical, val, val_len ) ); -} - -int mbedtls_x509write_crt_set_basic_constraints( mbedtls_x509write_cert *ctx, - int is_ca, int max_pathlen ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - unsigned char buf[9]; - unsigned char *c = buf + sizeof(buf); - size_t len = 0; - - memset( buf, 0, sizeof(buf) ); - - if( is_ca && max_pathlen > 127 ) - return( MBEDTLS_ERR_X509_BAD_INPUT_DATA ); - - if( is_ca ) - { - if( max_pathlen >= 0 ) - { - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_int( &c, buf, - max_pathlen ) ); - } - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_bool( &c, buf, 1 ) ); - } - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, - MBEDTLS_ASN1_CONSTRUCTED | - MBEDTLS_ASN1_SEQUENCE ) ); - - return( - mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_BASIC_CONSTRAINTS, - MBEDTLS_OID_SIZE( MBEDTLS_OID_BASIC_CONSTRAINTS ), - is_ca, buf + sizeof(buf) - len, len ) ); -} - -#if defined(MBEDTLS_SHA1_C) -int mbedtls_x509write_crt_set_subject_key_identifier( mbedtls_x509write_cert *ctx ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - unsigned char buf[MBEDTLS_MPI_MAX_SIZE * 2 + 20]; /* tag, length + 2xMPI */ - unsigned char *c = buf + sizeof(buf); - size_t len = 0; - - memset( buf, 0, sizeof(buf) ); - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_pk_write_pubkey( &c, buf, ctx->subject_key ) ); - - ret = mbedtls_sha1_ret( buf + sizeof( buf ) - len, len, - buf + sizeof( buf ) - 20 ); - if( ret != 0 ) - return( ret ); - c = buf + sizeof( buf ) - 20; - len = 20; - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_OCTET_STRING ) ); - - return mbedtls_x509write_crt_set_extension( ctx, - MBEDTLS_OID_SUBJECT_KEY_IDENTIFIER, - MBEDTLS_OID_SIZE( MBEDTLS_OID_SUBJECT_KEY_IDENTIFIER ), - 0, buf + sizeof(buf) - len, len ); -} - -int mbedtls_x509write_crt_set_authority_key_identifier( mbedtls_x509write_cert *ctx ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - unsigned char buf[MBEDTLS_MPI_MAX_SIZE * 2 + 20]; /* tag, length + 2xMPI */ - unsigned char *c = buf + sizeof( buf ); - size_t len = 0; - - memset( buf, 0, sizeof(buf) ); - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_pk_write_pubkey( &c, buf, ctx->issuer_key ) ); - - ret = mbedtls_sha1_ret( buf + sizeof( buf ) - len, len, - buf + sizeof( buf ) - 20 ); - if( ret != 0 ) - return( ret ); - c = buf + sizeof( buf ) - 20; - len = 20; - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONTEXT_SPECIFIC | 0 ) ); - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_asn1_write_tag( &c, buf, - MBEDTLS_ASN1_CONSTRUCTED | - MBEDTLS_ASN1_SEQUENCE ) ); - - return mbedtls_x509write_crt_set_extension( - ctx, MBEDTLS_OID_AUTHORITY_KEY_IDENTIFIER, - MBEDTLS_OID_SIZE( MBEDTLS_OID_AUTHORITY_KEY_IDENTIFIER ), - 0, buf + sizeof( buf ) - len, len ); -} -#endif /* MBEDTLS_SHA1_C */ - -int mbedtls_x509write_crt_set_key_usage( mbedtls_x509write_cert *ctx, - unsigned int key_usage ) -{ - unsigned char buf[5] = {0}, ku[2] = {0}; - unsigned char *c; - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - const unsigned int allowed_bits = MBEDTLS_X509_KU_DIGITAL_SIGNATURE | - MBEDTLS_X509_KU_NON_REPUDIATION | - MBEDTLS_X509_KU_KEY_ENCIPHERMENT | - MBEDTLS_X509_KU_DATA_ENCIPHERMENT | - MBEDTLS_X509_KU_KEY_AGREEMENT | - MBEDTLS_X509_KU_KEY_CERT_SIGN | - MBEDTLS_X509_KU_CRL_SIGN | - MBEDTLS_X509_KU_ENCIPHER_ONLY | - MBEDTLS_X509_KU_DECIPHER_ONLY; - - /* Check that nothing other than the allowed flags is set */ - if( ( key_usage & ~allowed_bits ) != 0 ) - return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE ); - - c = buf + 5; - ku[0] = (unsigned char)( key_usage ); - ku[1] = (unsigned char)( key_usage >> 8 ); - ret = mbedtls_asn1_write_named_bitstring( &c, buf, ku, 9 ); - - if( ret < 0 ) - return( ret ); - else if( ret < 3 || ret > 5 ) - return( MBEDTLS_ERR_X509_INVALID_FORMAT ); - - ret = mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_KEY_USAGE, - MBEDTLS_OID_SIZE( MBEDTLS_OID_KEY_USAGE ), - 1, c, (size_t)ret ); - if( ret != 0 ) - return( ret ); - - return( 0 ); -} - -int mbedtls_x509write_crt_set_ns_cert_type( mbedtls_x509write_cert *ctx, - unsigned char ns_cert_type ) -{ - unsigned char buf[4] = {0}; - unsigned char *c; - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - - c = buf + 4; - - ret = mbedtls_asn1_write_named_bitstring( &c, buf, &ns_cert_type, 8 ); - if( ret < 3 || ret > 4 ) - return( ret ); - - ret = mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_NS_CERT_TYPE, - MBEDTLS_OID_SIZE( MBEDTLS_OID_NS_CERT_TYPE ), - 0, c, (size_t)ret ); - if( ret != 0 ) - return( ret ); - - return( 0 ); -} - -static int x509_write_time( unsigned char **p, unsigned char *start, - const char *t, size_t size ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - size_t len = 0; - - /* - * write MBEDTLS_ASN1_UTC_TIME if year < 2050 (2 bytes shorter) - */ - if( t[0] == '2' && t[1] == '0' && t[2] < '5' ) - { - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, - (const unsigned char *) t + 2, - size - 2 ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, - MBEDTLS_ASN1_UTC_TIME ) ); - } - else - { - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, - (const unsigned char *) t, - size ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, - MBEDTLS_ASN1_GENERALIZED_TIME ) ); - } - - return( (int) len ); -} - -int mbedtls_x509write_crt_der( mbedtls_x509write_cert *ctx, - unsigned char *buf, size_t size, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - const char *sig_oid; - size_t sig_oid_len = 0; - unsigned char *c, *c2; - unsigned char hash[64]; - unsigned char sig[MBEDTLS_PK_SIGNATURE_MAX_SIZE]; - size_t sub_len = 0, pub_len = 0, sig_and_oid_len = 0, sig_len; - size_t len = 0; - mbedtls_pk_type_t pk_alg; - - /* - * Prepare data to be signed at the end of the target buffer - */ - c = buf + size; - - /* Signature algorithm needed in TBS, and later for actual signature */ - - /* There's no direct way of extracting a signature algorithm - * (represented as an element of mbedtls_pk_type_t) from a PK instance. */ - if( mbedtls_pk_can_do( ctx->issuer_key, MBEDTLS_PK_RSA ) ) - pk_alg = MBEDTLS_PK_RSA; - else if( mbedtls_pk_can_do( ctx->issuer_key, MBEDTLS_PK_ECDSA ) ) - pk_alg = MBEDTLS_PK_ECDSA; - else - return( MBEDTLS_ERR_X509_INVALID_ALG ); - - if( ( ret = mbedtls_oid_get_oid_by_sig_alg( pk_alg, ctx->md_alg, - &sig_oid, &sig_oid_len ) ) != 0 ) - { - return( ret ); - } - - /* - * Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension - */ - - /* Only for v3 */ - if( ctx->version == MBEDTLS_X509_CRT_VERSION_3 ) - { - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_x509_write_extensions( &c, - buf, ctx->extensions ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_asn1_write_tag( &c, buf, - MBEDTLS_ASN1_CONSTRUCTED | - MBEDTLS_ASN1_SEQUENCE ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_asn1_write_tag( &c, buf, - MBEDTLS_ASN1_CONTEXT_SPECIFIC | - MBEDTLS_ASN1_CONSTRUCTED | 3 ) ); - } - - /* - * SubjectPublicKeyInfo - */ - MBEDTLS_ASN1_CHK_ADD( pub_len, - mbedtls_pk_write_pubkey_der( ctx->subject_key, - buf, c - buf ) ); - c -= pub_len; - len += pub_len; - - /* - * Subject ::= Name - */ - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_x509_write_names( &c, buf, - ctx->subject ) ); - - /* - * Validity ::= SEQUENCE { - * notBefore Time, - * notAfter Time } - */ - sub_len = 0; - - MBEDTLS_ASN1_CHK_ADD( sub_len, - x509_write_time( &c, buf, ctx->not_after, - MBEDTLS_X509_RFC5280_UTC_TIME_LEN ) ); - - MBEDTLS_ASN1_CHK_ADD( sub_len, - x509_write_time( &c, buf, ctx->not_before, - MBEDTLS_X509_RFC5280_UTC_TIME_LEN ) ); - - len += sub_len; - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, sub_len ) ); - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_asn1_write_tag( &c, buf, - MBEDTLS_ASN1_CONSTRUCTED | - MBEDTLS_ASN1_SEQUENCE ) ); - - /* - * Issuer ::= Name - */ - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_x509_write_names( &c, buf, - ctx->issuer ) ); - - /* - * Signature ::= AlgorithmIdentifier - */ - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_asn1_write_algorithm_identifier( &c, buf, - sig_oid, strlen( sig_oid ), 0 ) ); - - /* - * Serial ::= INTEGER - */ - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, - &ctx->serial ) ); - - /* - * Version ::= INTEGER { v1(0), v2(1), v3(2) } - */ - - /* Can be omitted for v1 */ - if( ctx->version != MBEDTLS_X509_CRT_VERSION_1 ) - { - sub_len = 0; - MBEDTLS_ASN1_CHK_ADD( sub_len, - mbedtls_asn1_write_int( &c, buf, ctx->version ) ); - len += sub_len; - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_asn1_write_len( &c, buf, sub_len ) ); - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_asn1_write_tag( &c, buf, - MBEDTLS_ASN1_CONTEXT_SPECIFIC | - MBEDTLS_ASN1_CONSTRUCTED | 0 ) ); - } - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, - mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED | - MBEDTLS_ASN1_SEQUENCE ) ); - - /* - * Make signature - */ - - /* Compute hash of CRT. */ - if( ( ret = mbedtls_md( mbedtls_md_info_from_type( ctx->md_alg ), c, - len, hash ) ) != 0 ) - { - return( ret ); - } - - if( ( ret = mbedtls_pk_sign( ctx->issuer_key, ctx->md_alg, - hash, 0, sig, &sig_len, - f_rng, p_rng ) ) != 0 ) - { - return( ret ); - } - - /* Move CRT to the front of the buffer to have space - * for the signature. */ - memmove( buf, c, len ); - c = buf + len; - - /* Add signature at the end of the buffer, - * making sure that it doesn't underflow - * into the CRT buffer. */ - c2 = buf + size; - MBEDTLS_ASN1_CHK_ADD( sig_and_oid_len, mbedtls_x509_write_sig( &c2, c, - sig_oid, sig_oid_len, sig, sig_len ) ); - - /* - * Memory layout after this step: - * - * buf c=buf+len c2 buf+size - * [CRT0,...,CRTn, UNUSED, ..., UNUSED, SIG0, ..., SIGm] - */ - - /* Move raw CRT to just before the signature. */ - c = c2 - len; - memmove( c, buf, len ); - - len += sig_and_oid_len; - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, - MBEDTLS_ASN1_CONSTRUCTED | - MBEDTLS_ASN1_SEQUENCE ) ); - - return( (int) len ); -} - -#define PEM_BEGIN_CRT "-----BEGIN CERTIFICATE-----\n" -#define PEM_END_CRT "-----END CERTIFICATE-----\n" - -#if defined(MBEDTLS_PEM_WRITE_C) -int mbedtls_x509write_crt_pem( mbedtls_x509write_cert *crt, - unsigned char *buf, size_t size, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - size_t olen; - - if( ( ret = mbedtls_x509write_crt_der( crt, buf, size, - f_rng, p_rng ) ) < 0 ) - { - return( ret ); - } - - if( ( ret = mbedtls_pem_write_buffer( PEM_BEGIN_CRT, PEM_END_CRT, - buf + size - ret, ret, - buf, size, &olen ) ) != 0 ) - { - return( ret ); - } - - return( 0 ); -} -#endif /* MBEDTLS_PEM_WRITE_C */ - -#endif /* MBEDTLS_X509_CRT_WRITE_C */ |