Removed old mbedtls, replacing with submodule.

1 files changed, 0 insertions, 1067 deletions

diff --git a/lib/mbedtls-2.27.0/library/x509.c b/lib/mbedtls-2.27.0/library/x509.c
deleted file mode 100644
index f21e9e6..0000000
--- a/lib/mbedtls-2.27.0/library/x509.c
+++ /dev/null
@@ -1,1067 +0,0 @@
-/*
- *  X.509 common functions for parsing and verification
- *
- *  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.
- */
-/*
- *  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
- */
-
-#include "common.h"
-
-#if defined(MBEDTLS_X509_USE_C)
-
-#include "mbedtls/x509.h"
-#include "mbedtls/asn1.h"
-#include "mbedtls/error.h"
-#include "mbedtls/oid.h"
-
-#include <stdio.h>
-#include <string.h>
-
-#if defined(MBEDTLS_PEM_PARSE_C)
-#include "mbedtls/pem.h"
-#endif
-
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#define mbedtls_free      free
-#define mbedtls_calloc    calloc
-#define mbedtls_printf    printf
-#define mbedtls_snprintf  snprintf
-#endif
-
-#if defined(MBEDTLS_HAVE_TIME)
-#include "mbedtls/platform_time.h"
-#endif
-#if defined(MBEDTLS_HAVE_TIME_DATE)
-#include "mbedtls/platform_util.h"
-#include <time.h>
-#endif
-
-#define CHECK(code) if( ( ret = ( code ) ) != 0 ){ return( ret ); }
-#define CHECK_RANGE(min, max, val)                      \
-    do                                                  \
-    {                                                   \
-        if( ( val ) < ( min ) || ( val ) > ( max ) )    \
-        {                                               \
-            return( ret );                              \
-        }                                               \
-    } while( 0 )
-
-/*
- *  CertificateSerialNumber  ::=  INTEGER
- */
-int mbedtls_x509_get_serial( unsigned char **p, const unsigned char *end,
-                     mbedtls_x509_buf *serial )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
-    if( ( end - *p ) < 1 )
-        return( MBEDTLS_ERROR_ADD( 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_ERROR_ADD( 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_ERROR_ADD( 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
-    if( ( ret = mbedtls_asn1_get_alg_null( p, end, alg ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_ALG, ret ) );
-
-    return( 0 );
-}
-
-/*
- * Parse an algorithm identifier with (optional) parameters
- */
-int mbedtls_x509_get_alg( unsigned char **p, const unsigned char *end,
-                  mbedtls_x509_buf *alg, mbedtls_x509_buf *params )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
-    if( ( ret = mbedtls_asn1_get_alg( p, end, alg, params ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    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_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_ALG,
-                MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) );
-
-    p = alg->p;
-    end = p + alg->len;
-
-    if( p >= end )
-        return( MBEDTLS_ERROR_ADD( 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_ERROR_ADD( 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_ERROR_ADD( 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_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_ALG, ret ) );
-
-    if( p != end )
-        return( MBEDTLS_ERROR_ADD( 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    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_ERROR_ADD( 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_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_ALG, ret ) );
-
-        if( p != end2 )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_ALG,
-                    MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
-    }
-    else if( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
-        return( MBEDTLS_ERROR_ADD( 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_ERROR_ADD( 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_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_ALG,
-                    MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
-    }
-    else if( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
-        return( MBEDTLS_ERROR_ADD( 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_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_ALG, ret ) );
-
-        if( p != end2 )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_ALG,
-                    MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
-    }
-    else if( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
-        return( MBEDTLS_ERROR_ADD( 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_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_ALG, ret ) );
-
-        if( p != end2 )
-            return( MBEDTLS_ERROR_ADD( 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_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_ALG, ret ) );
-
-    if( p != end )
-        return( MBEDTLS_ERROR_ADD( 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    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_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_NAME, ret ) );
-
-    end = *p + len;
-
-    if( ( end - *p ) < 1 )
-        return( MBEDTLS_ERROR_ADD( 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_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_NAME, ret ) );
-
-    oid->p = *p;
-    *p += oid->len;
-
-    if( ( end - *p ) < 1 )
-        return( MBEDTLS_ERROR_ADD( 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_ERROR_ADD( 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_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_NAME, ret ) );
-
-    val->p = *p;
-    *p += val->len;
-
-    if( *p != end )
-    {
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_NAME,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
-    }
-
-    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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    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_ERROR_ADD( 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, size_t 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 );
-}
-
-static int x509_date_is_valid(const mbedtls_x509_time *t )
-{
-    int ret = MBEDTLS_ERR_X509_INVALID_DATE;
-    int month_len;
-
-    CHECK_RANGE( 0, 9999, t->year );
-    CHECK_RANGE( 0, 23,   t->hour );
-    CHECK_RANGE( 0, 59,   t->min  );
-    CHECK_RANGE( 0, 59,   t->sec  );
-
-    switch( t->mon )
-    {
-        case 1: case 3: case 5: case 7: case 8: case 10: case 12:
-            month_len = 31;
-            break;
-        case 4: case 6: case 9: case 11:
-            month_len = 30;
-            break;
-        case 2:
-            if( ( !( t->year % 4 ) && t->year % 100 ) ||
-                !( t->year % 400 ) )
-                month_len = 29;
-            else
-                month_len = 28;
-            break;
-        default:
-            return( ret );
-    }
-    CHECK_RANGE( 1, month_len, t->day );
-
-    return( 0 );
-}
-
-/*
- * Parse an ASN1_UTC_TIME (yearlen=2) or ASN1_GENERALIZED_TIME (yearlen=4)
- * field.
- */
-static int x509_parse_time( unsigned char **p, size_t len, size_t yearlen,
-                            mbedtls_x509_time *tm )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
-    /*
-     * Minimum length is 10 or 12 depending on yearlen
-     */
-    if ( len < yearlen + 8 )
-        return ( MBEDTLS_ERR_X509_INVALID_DATE );
-    len -= yearlen + 8;
-
-    /*
-     * Parse year, month, day, hour, minute
-     */
-    CHECK( x509_parse_int( p, yearlen, &tm->year ) );
-    if ( 2 == yearlen )
-    {
-        if ( tm->year < 50 )
-            tm->year += 100;
-
-        tm->year += 1900;
-    }
-
-    CHECK( x509_parse_int( p, 2, &tm->mon ) );
-    CHECK( x509_parse_int( p, 2, &tm->day ) );
-    CHECK( x509_parse_int( p, 2, &tm->hour ) );
-    CHECK( x509_parse_int( p, 2, &tm->min ) );
-
-    /*
-     * Parse seconds if present
-     */
-    if ( len >= 2 )
-    {
-        CHECK( x509_parse_int( p, 2, &tm->sec ) );
-        len -= 2;
-    }
-    else
-        return ( MBEDTLS_ERR_X509_INVALID_DATE );
-
-    /*
-     * Parse trailing 'Z' if present
-     */
-    if ( 1 == len && 'Z' == **p )
-    {
-        (*p)++;
-        len--;
-    }
-
-    /*
-     * We should have parsed all characters at this point
-     */
-    if ( 0 != len )
-        return ( MBEDTLS_ERR_X509_INVALID_DATE );
-
-    CHECK( x509_date_is_valid( tm ) );
-
-    return ( 0 );
-}
-
-/*
- *  Time ::= CHOICE {
- *       utcTime        UTCTime,
- *       generalTime    GeneralizedTime }
- */
-int mbedtls_x509_get_time( unsigned char **p, const unsigned char *end,
-                           mbedtls_x509_time *tm )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    size_t len, year_len;
-    unsigned char tag;
-
-    if( ( end - *p ) < 1 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_DATE,
-                MBEDTLS_ERR_ASN1_OUT_OF_DATA ) );
-
-    tag = **p;
-
-    if( tag == MBEDTLS_ASN1_UTC_TIME )
-        year_len = 2;
-    else if( tag == MBEDTLS_ASN1_GENERALIZED_TIME )
-        year_len = 4;
-    else
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_DATE,
-                MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) );
-
-    (*p)++;
-    ret = mbedtls_asn1_get_len( p, end, &len );
-
-    if( ret != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_DATE, ret ) );
-
-    return x509_parse_time( p, len, year_len, tm );
-}
-
-int mbedtls_x509_get_sig( unsigned char **p, const unsigned char *end, mbedtls_x509_buf *sig )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    size_t len;
-    int tag_type;
-
-    if( ( end - *p ) < 1 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_SIGNATURE,
-                MBEDTLS_ERR_ASN1_OUT_OF_DATA ) );
-
-    tag_type = **p;
-
-    if( ( ret = mbedtls_asn1_get_bitstring_null( p, end, &len ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_SIGNATURE, ret ) );
-
-    sig->tag = tag_type;
-    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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
-    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_ERROR_ADD( 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    size_t len;
-
-    /* Extension structure use EXPLICIT tagging. That is, the actual
-     * `Extensions` structure is wrapped by a tag-length pair using
-     * the respective context-specific tag. */
-    ret = mbedtls_asn1_get_tag( p, end, &ext->len,
-              MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | tag );
-    if( ret != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
-
-    ext->tag = MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | tag;
-    ext->p   = *p;
-    end      = *p + ext->len;
-
-    /*
-     * Extensions  ::=  SEQUENCE SIZE (1..MAX) OF Extension
-     */
-    if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
-
-    if( end != *p + len )
-        return( MBEDTLS_ERROR_ADD( 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    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 )
-                 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    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 ) : "???",
-                              (unsigned int) 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
-    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.
- */
-static int x509_get_current_time( mbedtls_x509_time *now )
-{
-    struct tm *lt, tm_buf;
-    mbedtls_time_t tt;
-    int ret = 0;
-
-    tt = mbedtls_time( NULL );
-    lt = mbedtls_platform_gmtime_r( &tt, &tm_buf );
-
-    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;
-    }
-
-    return( ret );
-}
-
-/*
- * 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 )
-{
-    int ret = 0;
-#if defined(MBEDTLS_CERTS_C) && defined(MBEDTLS_SHA256_C)
-    uint32_t flags;
-    mbedtls_x509_crt cacert;
-    mbedtls_x509_crt clicert;
-
-    if( verbose != 0 )
-        mbedtls_printf( "  X.509 certificate load: " );
-
-    mbedtls_x509_crt_init( &cacert );
-    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" );
-
-        goto cleanup;
-    }
-
-    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" );
-
-        goto cleanup;
-    }
-
-    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" );
-
-        goto cleanup;
-    }
-
-    if( verbose != 0 )
-        mbedtls_printf( "passed\n\n");
-
-cleanup:
-    mbedtls_x509_crt_free( &cacert  );
-    mbedtls_x509_crt_free( &clicert );
-#else
-    ((void) verbose);
-#endif /* MBEDTLS_CERTS_C && MBEDTLS_SHA256_C */
-    return( ret );
-}
-
-#endif /* MBEDTLS_SELF_TEST */
-
-#endif /* MBEDTLS_X509_USE_C */