/* * X.509 common functions for parsing and verification * * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved * 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. * * This file is part of mbed TLS (https://tls.mbed.org) */ /* * The ITU-T X.509 standard defines a certificate format for PKI. * * http://www.ietf.org/rfc/rfc5280.txt (Certificates and CRLs) * http://www.ietf.org/rfc/rfc3279.txt (Alg IDs for CRLs) * http://www.ietf.org/rfc/rfc2986.txt (CSRs, aka PKCS#10) * * 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 */ #if !defined(MBEDTLS_CONFIG_FILE) #include "mbedtls/mbedtls_config.h" #else #include MBEDTLS_CONFIG_FILE #endif #if defined(MBEDTLS_X509_USE_C) #include "mbedtls/x509.h" #include "mbedtls/asn1.h" #include "mbedtls/oid.h" #include #include #if defined(MBEDTLS_PEM_PARSE_C) #include "mbedtls/pem.h" #endif #if defined(MBEDTLS_PLATFORM_C) #include "mbedtls/platform.h" #else #include #include #define mbedtls_free free #define mbedtls_calloc calloc #define mbedtls_time time #define mbedtls_time_t time_t #define mbedtls_printf printf #define mbedtls_snprintf snprintf #endif #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32) #include #else #include #endif #if defined(MBEDTLS_FS_IO) #include #if !defined(_WIN32) #include #include #include #endif #endif #define CHECK(code) if( ( ret = code ) != 0 ){ return( ret ); } /* * CertificateSerialNumber ::= INTEGER */ int mbedtls_x509_get_serial(unsigned char **p, const unsigned char *end, mbedtls_x509_buf *serial) { int ret; if ((end - *p) < 1) return (MBEDTLS_ERR_X509_INVALID_SERIAL + MBEDTLS_ERR_ASN1_OUT_OF_DATA); if (**p != (MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_PRIMITIVE | 2) && **p != MBEDTLS_ASN1_INTEGER) return (MBEDTLS_ERR_X509_INVALID_SERIAL + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG); serial->tag = *(*p)++; if ((ret = mbedtls_asn1_get_len(p, end, &serial->len)) != 0) { return (MBEDTLS_ERR_X509_INVALID_SERIAL + ret); } serial->p = *p; *p += serial->len; return (0); } /* Get an algorithm identifier without parameters (eg for signatures) * * AlgorithmIdentifier ::= SEQUENCE { * algorithm OBJECT IDENTIFIER, * parameters ANY DEFINED BY algorithm OPTIONAL } */ int mbedtls_x509_get_alg_null(unsigned char **p, const unsigned char *end, mbedtls_x509_buf *alg) { int ret; if ((ret = mbedtls_asn1_get_alg_null(p, end, alg)) != 0) { return (MBEDTLS_ERR_X509_INVALID_ALG + ret); } return (0); } /* * Parse an algorithm identifier with (optional) paramaters */ int mbedtls_x509_get_alg(unsigned char **p, const unsigned char *end, mbedtls_x509_buf *alg, mbedtls_x509_buf *params) { int ret; if ((ret = mbedtls_asn1_get_alg(p, end, alg, params)) != 0) { return (MBEDTLS_ERR_X509_INVALID_ALG + ret); } return (0); } #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT) /* * HashAlgorithm ::= AlgorithmIdentifier * * AlgorithmIdentifier ::= SEQUENCE { * algorithm OBJECT IDENTIFIER, * parameters ANY DEFINED BY algorithm OPTIONAL } * * For HashAlgorithm, parameters MUST be NULL or absent. */ static int x509_get_hash_alg(const mbedtls_x509_buf *alg, mbedtls_md_type_t *md_alg) { int ret; unsigned char *p; const unsigned char *end; mbedtls_x509_buf md_oid; size_t len; /* Make sure we got a SEQUENCE and setup bounds */ if (alg->tag != (MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) return (MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG); p = (unsigned char *) alg->p; end = p + alg->len; if (p >= end) return (MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_OUT_OF_DATA); /* Parse md_oid */ md_oid.tag = *p; if ((ret = mbedtls_asn1_get_tag(&p, end, &md_oid.len, MBEDTLS_ASN1_OID)) != 0) { return (MBEDTLS_ERR_X509_INVALID_ALG + ret); } md_oid.p = p; p += md_oid.len; /* Get md_alg from md_oid */ if ((ret = mbedtls_oid_get_md_alg(&md_oid, md_alg)) != 0) { return (MBEDTLS_ERR_X509_INVALID_ALG + ret); } /* Make sure params is absent of NULL */ if (p == end) { return (0); } if ((ret = mbedtls_asn1_get_tag(&p, end, &len, MBEDTLS_ASN1_NULL)) != 0 || len != 0) { return (MBEDTLS_ERR_X509_INVALID_ALG + ret); } if (p != end) return (MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH); return (0); } /* * RSASSA-PSS-params ::= SEQUENCE { * hashAlgorithm [0] HashAlgorithm DEFAULT sha1Identifier, * maskGenAlgorithm [1] MaskGenAlgorithm DEFAULT mgf1SHA1Identifier, * saltLength [2] INTEGER DEFAULT 20, * trailerField [3] INTEGER DEFAULT 1 } * -- Note that the tags in this Sequence are explicit. * * RFC 4055 (which defines use of RSASSA-PSS in PKIX) states that the value * of trailerField MUST be 1, and PKCS#1 v2.2 doesn't even define any other * option. Enfore this at parsing time. */ int mbedtls_x509_get_rsassa_pss_params(const mbedtls_x509_buf *params, mbedtls_md_type_t *md_alg, mbedtls_md_type_t *mgf_md, int *salt_len) { int ret; unsigned char *p; const unsigned char *end, *end2; size_t len; mbedtls_x509_buf alg_id, alg_params; /* First set everything to defaults */ *md_alg = MBEDTLS_MD_SHA1; *mgf_md = MBEDTLS_MD_SHA1; *salt_len = 20; /* Make sure params is a SEQUENCE and setup bounds */ if (params->tag != (MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) return (MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG); p = (unsigned char *) params->p; end = p + params->len; if (p == end) { return (0); } /* * HashAlgorithm */ if ((ret = mbedtls_asn1_get_tag(&p, end, &len, MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 0)) == 0) { end2 = p + len; /* HashAlgorithm ::= AlgorithmIdentifier (without parameters) */ if ((ret = mbedtls_x509_get_alg_null(&p, end2, &alg_id)) != 0) { return (ret); } if ((ret = mbedtls_oid_get_md_alg(&alg_id, md_alg)) != 0) { return (MBEDTLS_ERR_X509_INVALID_ALG + ret); } if (p != end2) return (MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH); } else if (ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG) { return (MBEDTLS_ERR_X509_INVALID_ALG + ret); } if (p == end) { return (0); } /* * MaskGenAlgorithm */ if ((ret = mbedtls_asn1_get_tag(&p, end, &len, MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 1)) == 0) { end2 = p + len; /* MaskGenAlgorithm ::= AlgorithmIdentifier (params = HashAlgorithm) */ if ((ret = mbedtls_x509_get_alg(&p, end2, &alg_id, &alg_params)) != 0) { return (ret); } /* Only MFG1 is recognised for now */ if (MBEDTLS_OID_CMP(MBEDTLS_OID_MGF1, &alg_id) != 0) return (MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE + MBEDTLS_ERR_OID_NOT_FOUND); /* Parse HashAlgorithm */ if ((ret = x509_get_hash_alg(&alg_params, mgf_md)) != 0) { return (ret); } if (p != end2) return (MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH); } else if (ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG) { return (MBEDTLS_ERR_X509_INVALID_ALG + ret); } if (p == end) { return (0); } /* * salt_len */ if ((ret = mbedtls_asn1_get_tag(&p, end, &len, MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 2)) == 0) { end2 = p + len; if ((ret = mbedtls_asn1_get_int(&p, end2, salt_len)) != 0) { return (MBEDTLS_ERR_X509_INVALID_ALG + ret); } if (p != end2) return (MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH); } else if (ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG) { return (MBEDTLS_ERR_X509_INVALID_ALG + ret); } if (p == end) { return (0); } /* * trailer_field (if present, must be 1) */ if ((ret = mbedtls_asn1_get_tag(&p, end, &len, MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 3)) == 0) { int trailer_field; end2 = p + len; if ((ret = mbedtls_asn1_get_int(&p, end2, &trailer_field)) != 0) { return (MBEDTLS_ERR_X509_INVALID_ALG + ret); } if (p != end2) return (MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH); if (trailer_field != 1) { return (MBEDTLS_ERR_X509_INVALID_ALG); } } else if (ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG) { return (MBEDTLS_ERR_X509_INVALID_ALG + ret); } if (p != end) return (MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH); return (0); } #endif /* MBEDTLS_X509_RSASSA_PSS_SUPPORT */ /* * AttributeTypeAndValue ::= SEQUENCE { * type AttributeType, * value AttributeValue } * * AttributeType ::= OBJECT IDENTIFIER * * AttributeValue ::= ANY DEFINED BY AttributeType */ static int x509_get_attr_type_value(unsigned char **p, const unsigned char *end, mbedtls_x509_name *cur) { int ret; size_t len; mbedtls_x509_buf *oid; mbedtls_x509_buf *val; if ((ret = mbedtls_asn1_get_tag(p, end, &len, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) { return (MBEDTLS_ERR_X509_INVALID_NAME + ret); } if ((end - *p) < 1) return (MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA); oid = &cur->oid; oid->tag = **p; if ((ret = mbedtls_asn1_get_tag(p, end, &oid->len, MBEDTLS_ASN1_OID)) != 0) { return (MBEDTLS_ERR_X509_INVALID_NAME + ret); } oid->p = *p; *p += oid->len; if ((end - *p) < 1) return (MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA); if (**p != MBEDTLS_ASN1_BMP_STRING && **p != MBEDTLS_ASN1_UTF8_STRING && **p != MBEDTLS_ASN1_T61_STRING && **p != MBEDTLS_ASN1_PRINTABLE_STRING && **p != MBEDTLS_ASN1_IA5_STRING && **p != MBEDTLS_ASN1_UNIVERSAL_STRING && **p != MBEDTLS_ASN1_BIT_STRING) return (MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG); val = &cur->val; val->tag = *(*p)++; if ((ret = mbedtls_asn1_get_len(p, end, &val->len)) != 0) { return (MBEDTLS_ERR_X509_INVALID_NAME + ret); } val->p = *p; *p += val->len; cur->next = NULL; return (0); } /* * Name ::= CHOICE { -- only one possibility for now -- * rdnSequence RDNSequence } * * RDNSequence ::= SEQUENCE OF RelativeDistinguishedName * * RelativeDistinguishedName ::= * SET OF AttributeTypeAndValue * * AttributeTypeAndValue ::= SEQUENCE { * type AttributeType, * value AttributeValue } * * AttributeType ::= OBJECT IDENTIFIER * * AttributeValue ::= ANY DEFINED BY AttributeType * * The data structure is optimized for the common case where each RDN has only * one element, which is represented as a list of AttributeTypeAndValue. * For the general case we still use a flat list, but we mark elements of the * same set so that they are "merged" together in the functions that consume * this list, eg mbedtls_x509_dn_gets(). */ int mbedtls_x509_get_name(unsigned char **p, const unsigned char *end, mbedtls_x509_name *cur) { int ret; size_t set_len; const unsigned char *end_set; /* don't use recursion, we'd risk stack overflow if not optimized */ while (1) { /* * parse SET */ if ((ret = mbedtls_asn1_get_tag(p, end, &set_len, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SET)) != 0) { return (MBEDTLS_ERR_X509_INVALID_NAME + ret); } end_set = *p + set_len; while (1) { if ((ret = x509_get_attr_type_value(p, end_set, cur)) != 0) { return (ret); } if (*p == end_set) { break; } /* Mark this item as being no the only one in a set */ cur->next_merged = 1; cur->next = mbedtls_calloc(1, sizeof(mbedtls_x509_name)); if (cur->next == NULL) { return (MBEDTLS_ERR_X509_ALLOC_FAILED); } cur = cur->next; } /* * continue until end of SEQUENCE is reached */ if (*p == end) { return (0); } cur->next = mbedtls_calloc(1, sizeof(mbedtls_x509_name)); if (cur->next == NULL) { return (MBEDTLS_ERR_X509_ALLOC_FAILED); } cur = cur->next; } } static int x509_parse_int(unsigned char **p, unsigned n, int *res) { *res = 0; for (; n > 0; --n) { if ((**p < '0') || (**p > '9')) { return MBEDTLS_ERR_X509_INVALID_DATE; } *res *= 10; *res += (*(*p)++ - '0'); } return 0; } /* * Time ::= CHOICE { * utcTime UTCTime, * generalTime GeneralizedTime } */ int mbedtls_x509_get_time(unsigned char **p, const unsigned char *end, mbedtls_x509_time *time) { int ret; size_t len; unsigned char tag; if ((end - *p) < 1) return (MBEDTLS_ERR_X509_INVALID_DATE + MBEDTLS_ERR_ASN1_OUT_OF_DATA); tag = **p; if (tag == MBEDTLS_ASN1_UTC_TIME) { (*p)++; ret = mbedtls_asn1_get_len(p, end, &len); if (ret != 0) { return (MBEDTLS_ERR_X509_INVALID_DATE + ret); } CHECK(x509_parse_int(p, 2, &time->year)); CHECK(x509_parse_int(p, 2, &time->mon)); CHECK(x509_parse_int(p, 2, &time->day)); CHECK(x509_parse_int(p, 2, &time->hour)); CHECK(x509_parse_int(p, 2, &time->min)); if (len > 10) { CHECK(x509_parse_int(p, 2, &time->sec)); } if (len > 12 && *(*p)++ != 'Z') { return (MBEDTLS_ERR_X509_INVALID_DATE); } time->year += 100 * (time->year < 50); time->year += 1900; return (0); } else if (tag == MBEDTLS_ASN1_GENERALIZED_TIME) { (*p)++; ret = mbedtls_asn1_get_len(p, end, &len); if (ret != 0) { return (MBEDTLS_ERR_X509_INVALID_DATE + ret); } CHECK(x509_parse_int(p, 4, &time->year)); CHECK(x509_parse_int(p, 2, &time->mon)); CHECK(x509_parse_int(p, 2, &time->day)); CHECK(x509_parse_int(p, 2, &time->hour)); CHECK(x509_parse_int(p, 2, &time->min)); if (len > 12) { CHECK(x509_parse_int(p, 2, &time->sec)); } if (len > 14 && *(*p)++ != 'Z') { return (MBEDTLS_ERR_X509_INVALID_DATE); } return (0); } else return (MBEDTLS_ERR_X509_INVALID_DATE + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG); } int mbedtls_x509_get_sig(unsigned char **p, const unsigned char *end, mbedtls_x509_buf *sig) { int ret; size_t len; if ((end - *p) < 1) return (MBEDTLS_ERR_X509_INVALID_SIGNATURE + MBEDTLS_ERR_ASN1_OUT_OF_DATA); sig->tag = **p; if ((ret = mbedtls_asn1_get_bitstring_null(p, end, &len)) != 0) { return (MBEDTLS_ERR_X509_INVALID_SIGNATURE + ret); } sig->len = len; sig->p = *p; *p += len; return (0); } /* * Get signature algorithm from alg OID and optional parameters */ int mbedtls_x509_get_sig_alg(const mbedtls_x509_buf *sig_oid, const mbedtls_x509_buf *sig_params, mbedtls_md_type_t *md_alg, mbedtls_pk_type_t *pk_alg, void **sig_opts) { int ret; if (*sig_opts != NULL) { return (MBEDTLS_ERR_X509_BAD_INPUT_DATA); } if ((ret = mbedtls_oid_get_sig_alg(sig_oid, md_alg, pk_alg)) != 0) { return (MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG + ret); } #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT) if (*pk_alg == MBEDTLS_PK_RSASSA_PSS) { mbedtls_pk_rsassa_pss_options *pss_opts; pss_opts = mbedtls_calloc(1, sizeof(mbedtls_pk_rsassa_pss_options)); if (pss_opts == NULL) { return (MBEDTLS_ERR_X509_ALLOC_FAILED); } ret = mbedtls_x509_get_rsassa_pss_params(sig_params, md_alg, &pss_opts->mgf1_hash_id, &pss_opts->expected_salt_len); if (ret != 0) { mbedtls_free(pss_opts); return (ret); } *sig_opts = (void *) pss_opts; } else #endif /* MBEDTLS_X509_RSASSA_PSS_SUPPORT */ { /* Make sure parameters are absent or NULL */ if ((sig_params->tag != MBEDTLS_ASN1_NULL && sig_params->tag != 0) || sig_params->len != 0) { return (MBEDTLS_ERR_X509_INVALID_ALG); } } return (0); } /* * X.509 Extensions (No parsing of extensions, pointer should * be either manually updated or extensions should be parsed! */ int mbedtls_x509_get_ext(unsigned char **p, const unsigned char *end, mbedtls_x509_buf *ext, int tag) { int ret; size_t len; if (*p == end) { return (0); } ext->tag = **p; if ((ret = mbedtls_asn1_get_tag(p, end, &ext->len, MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | tag)) != 0) { return (ret); } ext->p = *p; end = *p + ext->len; /* * Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension * * Extension ::= SEQUENCE { * extnID OBJECT IDENTIFIER, * critical BOOLEAN DEFAULT FALSE, * extnValue OCTET STRING } */ if ((ret = mbedtls_asn1_get_tag(p, end, &len, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) { return (MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret); } if (end != *p + len) return (MBEDTLS_ERR_X509_INVALID_EXTENSIONS + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH); return (0); } /* * Store the name in printable form into buf; no more * than size characters will be written */ int mbedtls_x509_dn_gets(char *buf, size_t size, const mbedtls_x509_name *dn) { int ret; size_t i, n; unsigned char c, merge = 0; const mbedtls_x509_name *name; const char *short_name = NULL; char s[MBEDTLS_X509_MAX_DN_NAME_SIZE], *p; memset(s, 0, sizeof(s)); name = dn; p = buf; n = size; while (name != NULL) { if (!name->oid.p) { name = name->next; continue; } if (name != dn) { ret = mbedtls_snprintf(p, n, merge ? " + " : ", "); MBEDTLS_X509_SAFE_SNPRINTF; } ret = mbedtls_oid_get_attr_short_name(&name->oid, &short_name); if (ret == 0) { ret = mbedtls_snprintf(p, n, "%s=", short_name); } else { ret = mbedtls_snprintf(p, n, "\?\?="); } MBEDTLS_X509_SAFE_SNPRINTF; for (i = 0; i < name->val.len; i++) { if (i >= sizeof(s) - 1) { break; } c = name->val.p[i]; if (c < 32 || c == 127 || (c > 128 && c < 160)) { s[i] = '?'; } else { s[i] = c; } } s[i] = '\0'; ret = mbedtls_snprintf(p, n, "%s", s); MBEDTLS_X509_SAFE_SNPRINTF; merge = name->next_merged; name = name->next; } return ((int)(size - n)); } /* * Store the serial in printable form into buf; no more * than size characters will be written */ int mbedtls_x509_serial_gets(char *buf, size_t size, const mbedtls_x509_buf *serial) { int ret; size_t i, n, nr; char *p; p = buf; n = size; nr = (serial->len <= 32) ? serial->len : 28; for (i = 0; i < nr; i++) { if (i == 0 && nr > 1 && serial->p[i] == 0x0) { continue; } ret = mbedtls_snprintf(p, n, "%02X%s", serial->p[i], (i < nr - 1) ? ":" : ""); MBEDTLS_X509_SAFE_SNPRINTF; } if (nr != serial->len) { ret = mbedtls_snprintf(p, n, "...."); MBEDTLS_X509_SAFE_SNPRINTF; } return ((int)(size - n)); } /* * Helper for writing signature algorithms */ int mbedtls_x509_sig_alg_gets(char *buf, size_t size, const mbedtls_x509_buf *sig_oid, mbedtls_pk_type_t pk_alg, mbedtls_md_type_t md_alg, const void *sig_opts) { int ret; char *p = buf; size_t n = size; const char *desc = NULL; ret = mbedtls_oid_get_sig_alg_desc(sig_oid, &desc); if (ret != 0) { ret = mbedtls_snprintf(p, n, "???"); } else { ret = mbedtls_snprintf(p, n, "%s", desc); } MBEDTLS_X509_SAFE_SNPRINTF; #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT) if (pk_alg == MBEDTLS_PK_RSASSA_PSS) { const mbedtls_pk_rsassa_pss_options *pss_opts; const mbedtls_md_info_t *md_info, *mgf_md_info; pss_opts = (const mbedtls_pk_rsassa_pss_options *) sig_opts; md_info = mbedtls_md_info_from_type(md_alg); mgf_md_info = mbedtls_md_info_from_type(pss_opts->mgf1_hash_id); ret = mbedtls_snprintf(p, n, " (%s, MGF1-%s, 0x%02X)", md_info ? mbedtls_md_get_name(md_info) : "???", mgf_md_info ? mbedtls_md_get_name(mgf_md_info) : "???", pss_opts->expected_salt_len); MBEDTLS_X509_SAFE_SNPRINTF; } #else ((void) pk_alg); ((void) md_alg); ((void) sig_opts); #endif /* MBEDTLS_X509_RSASSA_PSS_SUPPORT */ return ((int)(size - n)); } /* * Helper for writing "RSA key size", "EC key size", etc */ int mbedtls_x509_key_size_helper(char *buf, size_t buf_size, const char *name) { char *p = buf; size_t n = buf_size; int ret; ret = mbedtls_snprintf(p, n, "%s key size", name); MBEDTLS_X509_SAFE_SNPRINTF; return (0); } #if defined(MBEDTLS_HAVE_TIME_DATE) /* * Set the time structure to the current time. * Return 0 on success, non-zero on failure. */ #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32) static int x509_get_current_time(mbedtls_x509_time *now) { SYSTEMTIME st; GetSystemTime(&st); now->year = st.wYear; now->mon = st.wMonth; now->day = st.wDay; now->hour = st.wHour; now->min = st.wMinute; now->sec = st.wSecond; return (0); } #else static int x509_get_current_time(mbedtls_x509_time *now) { struct tm *lt; mbedtls_time_t tt; int ret = 0; struct tm result; #if defined(MBEDTLS_THREADING_C) if (mbedtls_mutex_lock(&mbedtls_threading_gmtime_mutex) != 0) { return (MBEDTLS_ERR_THREADING_MUTEX_ERROR); } #endif tt = mbedtls_time(NULL); lt = gmtime_r(&tt, &result); if (lt == NULL) { ret = -1; } else { now->year = lt->tm_year + 1900; now->mon = lt->tm_mon + 1; now->day = lt->tm_mday; now->hour = lt->tm_hour; now->min = lt->tm_min; now->sec = lt->tm_sec; } #if defined(MBEDTLS_THREADING_C) if (mbedtls_mutex_unlock(&mbedtls_threading_gmtime_mutex) != 0) { return (MBEDTLS_ERR_THREADING_MUTEX_ERROR); } #endif return (ret); } #endif /* _WIN32 && !EFIX64 && !EFI32 */ /* * Return 0 if before <= after, 1 otherwise */ static int x509_check_time(const mbedtls_x509_time *before, const mbedtls_x509_time *after) { if (before->year > after->year) { return (1); } if (before->year == after->year && before->mon > after->mon) { return (1); } if (before->year == after->year && before->mon == after->mon && before->day > after->day) { return (1); } if (before->year == after->year && before->mon == after->mon && before->day == after->day && before->hour > after->hour) { return (1); } if (before->year == after->year && before->mon == after->mon && before->day == after->day && before->hour == after->hour && before->min > after->min) { return (1); } if (before->year == after->year && before->mon == after->mon && before->day == after->day && before->hour == after->hour && before->min == after->min && before->sec > after->sec) { return (1); } return (0); } int mbedtls_x509_time_is_past(const mbedtls_x509_time *to) { mbedtls_x509_time now; if (x509_get_current_time(&now) != 0) { return (1); } return (x509_check_time(&now, to)); } int mbedtls_x509_time_is_future(const mbedtls_x509_time *from) { mbedtls_x509_time now; if (x509_get_current_time(&now) != 0) { return (1); } return (x509_check_time(from, &now)); } #else /* MBEDTLS_HAVE_TIME_DATE */ int mbedtls_x509_time_is_past(const mbedtls_x509_time *to) { ((void) to); return (0); } int mbedtls_x509_time_is_future(const mbedtls_x509_time *from) { ((void) from); return (0); } #endif /* MBEDTLS_HAVE_TIME_DATE */ #if defined(MBEDTLS_SELF_TEST) #include "mbedtls/x509_crt.h" #include "mbedtls/certs.h" /* * Checkup routine */ int mbedtls_x509_self_test(int verbose) { #if defined(MBEDTLS_CERTS_C) && defined(MBEDTLS_SHA1_C) int ret; uint32_t flags; mbedtls_x509_crt cacert; mbedtls_x509_crt clicert; if (verbose != 0) { mbedtls_printf(" X.509 certificate load: "); } mbedtls_x509_crt_init(&clicert); ret = mbedtls_x509_crt_parse(&clicert, (const unsigned char *) mbedtls_test_cli_crt, mbedtls_test_cli_crt_len); if (ret != 0) { if (verbose != 0) { mbedtls_printf("failed\n"); } return (ret); } mbedtls_x509_crt_init(&cacert); ret = mbedtls_x509_crt_parse(&cacert, (const unsigned char *) mbedtls_test_ca_crt, mbedtls_test_ca_crt_len); if (ret != 0) { if (verbose != 0) { mbedtls_printf("failed\n"); } return (ret); } if (verbose != 0) { mbedtls_printf("passed\n X.509 signature verify: "); } ret = mbedtls_x509_crt_verify(&clicert, &cacert, NULL, NULL, &flags, NULL, NULL); if (ret != 0) { if (verbose != 0) { mbedtls_printf("failed\n"); } return (ret); } if (verbose != 0) { mbedtls_printf("passed\n\n"); } mbedtls_x509_crt_free(&cacert); mbedtls_x509_crt_free(&clicert); return (0); #else ((void) verbose); return (0); #endif /* MBEDTLS_CERTS_C && MBEDTLS_SHA1_C */ } #endif /* MBEDTLS_SELF_TEST */ #endif /* MBEDTLS_X509_USE_C */