Removed old mbedtls, replacing with submodule.

1 files changed, 0 insertions, 1536 deletions

diff --git a/lib/mbedtls-2.27.0/library/pkparse.c b/lib/mbedtls-2.27.0/library/pkparse.c
deleted file mode 100644
index 3222ca2..0000000
--- a/lib/mbedtls-2.27.0/library/pkparse.c
+++ /dev/null
@@ -1,1536 +0,0 @@
-/*
- *  Public Key layer for parsing key files and structures
- *
- *  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.
- */
-
-#include "common.h"
-
-#if defined(MBEDTLS_PK_PARSE_C)
-
-#include "mbedtls/pk.h"
-#include "mbedtls/asn1.h"
-#include "mbedtls/oid.h"
-#include "mbedtls/platform_util.h"
-#include "mbedtls/error.h"
-
-#include <string.h>
-
-#if defined(MBEDTLS_RSA_C)
-#include "mbedtls/rsa.h"
-#endif
-#if defined(MBEDTLS_ECP_C)
-#include "mbedtls/ecp.h"
-#endif
-#if defined(MBEDTLS_ECDSA_C)
-#include "mbedtls/ecdsa.h"
-#endif
-#if defined(MBEDTLS_PEM_PARSE_C)
-#include "mbedtls/pem.h"
-#endif
-#if defined(MBEDTLS_PKCS5_C)
-#include "mbedtls/pkcs5.h"
-#endif
-#if defined(MBEDTLS_PKCS12_C)
-#include "mbedtls/pkcs12.h"
-#endif
-
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdlib.h>
-#define mbedtls_calloc    calloc
-#define mbedtls_free       free
-#endif
-
-/* Parameter validation macros based on platform_util.h */
-#define PK_VALIDATE_RET( cond )    \
-    MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_PK_BAD_INPUT_DATA )
-#define PK_VALIDATE( cond )        \
-    MBEDTLS_INTERNAL_VALIDATE( cond )
-
-#if defined(MBEDTLS_FS_IO)
-/*
- * Load all data from a file into a given buffer.
- *
- * The file is expected to contain either PEM or DER encoded data.
- * A terminating null byte is always appended. It is included in the announced
- * length only if the data looks like it is PEM encoded.
- */
-int mbedtls_pk_load_file( const char *path, unsigned char **buf, size_t *n )
-{
-    FILE *f;
-    long size;
-
-    PK_VALIDATE_RET( path != NULL );
-    PK_VALIDATE_RET( buf != NULL );
-    PK_VALIDATE_RET( n != NULL );
-
-    if( ( f = fopen( path, "rb" ) ) == NULL )
-        return( MBEDTLS_ERR_PK_FILE_IO_ERROR );
-
-    fseek( f, 0, SEEK_END );
-    if( ( size = ftell( f ) ) == -1 )
-    {
-        fclose( f );
-        return( MBEDTLS_ERR_PK_FILE_IO_ERROR );
-    }
-    fseek( f, 0, SEEK_SET );
-
-    *n = (size_t) size;
-
-    if( *n + 1 == 0 ||
-        ( *buf = mbedtls_calloc( 1, *n + 1 ) ) == NULL )
-    {
-        fclose( f );
-        return( MBEDTLS_ERR_PK_ALLOC_FAILED );
-    }
-
-    if( fread( *buf, 1, *n, f ) != *n )
-    {
-        fclose( f );
-
-        mbedtls_platform_zeroize( *buf, *n );
-        mbedtls_free( *buf );
-
-        return( MBEDTLS_ERR_PK_FILE_IO_ERROR );
-    }
-
-    fclose( f );
-
-    (*buf)[*n] = '\0';
-
-    if( strstr( (const char *) *buf, "-----BEGIN " ) != NULL )
-        ++*n;
-
-    return( 0 );
-}
-
-/*
- * Load and parse a private key
- */
-int mbedtls_pk_parse_keyfile( mbedtls_pk_context *ctx,
-                      const char *path, const char *pwd )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    size_t n;
-    unsigned char *buf;
-
-    PK_VALIDATE_RET( ctx != NULL );
-    PK_VALIDATE_RET( path != NULL );
-
-    if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) != 0 )
-        return( ret );
-
-    if( pwd == NULL )
-        ret = mbedtls_pk_parse_key( ctx, buf, n, NULL, 0 );
-    else
-        ret = mbedtls_pk_parse_key( ctx, buf, n,
-                (const unsigned char *) pwd, strlen( pwd ) );
-
-    mbedtls_platform_zeroize( buf, n );
-    mbedtls_free( buf );
-
-    return( ret );
-}
-
-/*
- * Load and parse a public key
- */
-int mbedtls_pk_parse_public_keyfile( mbedtls_pk_context *ctx, const char *path )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    size_t n;
-    unsigned char *buf;
-
-    PK_VALIDATE_RET( ctx != NULL );
-    PK_VALIDATE_RET( path != NULL );
-
-    if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) != 0 )
-        return( ret );
-
-    ret = mbedtls_pk_parse_public_key( ctx, buf, n );
-
-    mbedtls_platform_zeroize( buf, n );
-    mbedtls_free( buf );
-
-    return( ret );
-}
-#endif /* MBEDTLS_FS_IO */
-
-#if defined(MBEDTLS_ECP_C)
-/* Minimally parse an ECParameters buffer to and mbedtls_asn1_buf
- *
- * ECParameters ::= CHOICE {
- *   namedCurve         OBJECT IDENTIFIER
- *   specifiedCurve     SpecifiedECDomain -- = SEQUENCE { ... }
- *   -- implicitCurve   NULL
- * }
- */
-static int pk_get_ecparams( unsigned char **p, const unsigned char *end,
-                            mbedtls_asn1_buf *params )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
-    if ( end - *p < 1 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_OUT_OF_DATA ) );
-
-    /* Tag may be either OID or SEQUENCE */
-    params->tag = **p;
-    if( params->tag != MBEDTLS_ASN1_OID
-#if defined(MBEDTLS_PK_PARSE_EC_EXTENDED)
-            && params->tag != ( MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE )
-#endif
-            )
-    {
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) );
-    }
-
-    if( ( ret = mbedtls_asn1_get_tag( p, end, &params->len, params->tag ) ) != 0 )
-    {
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-    }
-
-    params->p = *p;
-    *p += params->len;
-
-    if( *p != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
-
-    return( 0 );
-}
-
-#if defined(MBEDTLS_PK_PARSE_EC_EXTENDED)
-/*
- * Parse a SpecifiedECDomain (SEC 1 C.2) and (mostly) fill the group with it.
- * WARNING: the resulting group should only be used with
- * pk_group_id_from_specified(), since its base point may not be set correctly
- * if it was encoded compressed.
- *
- *  SpecifiedECDomain ::= SEQUENCE {
- *      version SpecifiedECDomainVersion(ecdpVer1 | ecdpVer2 | ecdpVer3, ...),
- *      fieldID FieldID {{FieldTypes}},
- *      curve Curve,
- *      base ECPoint,
- *      order INTEGER,
- *      cofactor INTEGER OPTIONAL,
- *      hash HashAlgorithm OPTIONAL,
- *      ...
- *  }
- *
- * We only support prime-field as field type, and ignore hash and cofactor.
- */
-static int pk_group_from_specified( const mbedtls_asn1_buf *params, mbedtls_ecp_group *grp )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    unsigned char *p = params->p;
-    const unsigned char * const end = params->p + params->len;
-    const unsigned char *end_field, *end_curve;
-    size_t len;
-    int ver;
-
-    /* SpecifiedECDomainVersion ::= INTEGER { 1, 2, 3 } */
-    if( ( ret = mbedtls_asn1_get_int( &p, end, &ver ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-
-    if( ver < 1 || ver > 3 )
-        return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT );
-
-    /*
-     * FieldID { FIELD-ID:IOSet } ::= SEQUENCE { -- Finite field
-     *       fieldType FIELD-ID.&id({IOSet}),
-     *       parameters FIELD-ID.&Type({IOSet}{@fieldType})
-     * }
-     */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-        return( ret );
-
-    end_field = p + len;
-
-    /*
-     * FIELD-ID ::= TYPE-IDENTIFIER
-     * FieldTypes FIELD-ID ::= {
-     *       { Prime-p IDENTIFIED BY prime-field } |
-     *       { Characteristic-two IDENTIFIED BY characteristic-two-field }
-     * }
-     * prime-field OBJECT IDENTIFIER ::= { id-fieldType 1 }
-     */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end_field, &len, MBEDTLS_ASN1_OID ) ) != 0 )
-        return( ret );
-
-    if( len != MBEDTLS_OID_SIZE( MBEDTLS_OID_ANSI_X9_62_PRIME_FIELD ) ||
-        memcmp( p, MBEDTLS_OID_ANSI_X9_62_PRIME_FIELD, len ) != 0 )
-    {
-        return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
-    }
-
-    p += len;
-
-    /* Prime-p ::= INTEGER -- Field of size p. */
-    if( ( ret = mbedtls_asn1_get_mpi( &p, end_field, &grp->P ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-
-    grp->pbits = mbedtls_mpi_bitlen( &grp->P );
-
-    if( p != end_field )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
-
-    /*
-     * Curve ::= SEQUENCE {
-     *       a FieldElement,
-     *       b FieldElement,
-     *       seed BIT STRING OPTIONAL
-     *       -- Shall be present if used in SpecifiedECDomain
-     *       -- with version equal to ecdpVer2 or ecdpVer3
-     * }
-     */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-        return( ret );
-
-    end_curve = p + len;
-
-    /*
-     * FieldElement ::= OCTET STRING
-     * containing an integer in the case of a prime field
-     */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end_curve, &len, MBEDTLS_ASN1_OCTET_STRING ) ) != 0 ||
-        ( ret = mbedtls_mpi_read_binary( &grp->A, p, len ) ) != 0 )
-    {
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-    }
-
-    p += len;
-
-    if( ( ret = mbedtls_asn1_get_tag( &p, end_curve, &len, MBEDTLS_ASN1_OCTET_STRING ) ) != 0 ||
-        ( ret = mbedtls_mpi_read_binary( &grp->B, p, len ) ) != 0 )
-    {
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-    }
-
-    p += len;
-
-    /* Ignore seed BIT STRING OPTIONAL */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end_curve, &len, MBEDTLS_ASN1_BIT_STRING ) ) == 0 )
-        p += len;
-
-    if( p != end_curve )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
-
-    /*
-     * ECPoint ::= OCTET STRING
-     */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len, MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-
-    if( ( ret = mbedtls_ecp_point_read_binary( grp, &grp->G,
-                                      ( const unsigned char *) p, len ) ) != 0 )
-    {
-        /*
-         * If we can't read the point because it's compressed, cheat by
-         * reading only the X coordinate and the parity bit of Y.
-         */
-        if( ret != MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE ||
-            ( p[0] != 0x02 && p[0] != 0x03 ) ||
-            len != mbedtls_mpi_size( &grp->P ) + 1 ||
-            mbedtls_mpi_read_binary( &grp->G.X, p + 1, len - 1 ) != 0 ||
-            mbedtls_mpi_lset( &grp->G.Y, p[0] - 2 ) != 0 ||
-            mbedtls_mpi_lset( &grp->G.Z, 1 ) != 0 )
-        {
-            return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT );
-        }
-    }
-
-    p += len;
-
-    /*
-     * order INTEGER
-     */
-    if( ( ret = mbedtls_asn1_get_mpi( &p, end, &grp->N ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-
-    grp->nbits = mbedtls_mpi_bitlen( &grp->N );
-
-    /*
-     * Allow optional elements by purposefully not enforcing p == end here.
-     */
-
-    return( 0 );
-}
-
-/*
- * Find the group id associated with an (almost filled) group as generated by
- * pk_group_from_specified(), or return an error if unknown.
- */
-static int pk_group_id_from_group( const mbedtls_ecp_group *grp, mbedtls_ecp_group_id *grp_id )
-{
-    int ret = 0;
-    mbedtls_ecp_group ref;
-    const mbedtls_ecp_group_id *id;
-
-    mbedtls_ecp_group_init( &ref );
-
-    for( id = mbedtls_ecp_grp_id_list(); *id != MBEDTLS_ECP_DP_NONE; id++ )
-    {
-        /* Load the group associated to that id */
-        mbedtls_ecp_group_free( &ref );
-        MBEDTLS_MPI_CHK( mbedtls_ecp_group_load( &ref, *id ) );
-
-        /* Compare to the group we were given, starting with easy tests */
-        if( grp->pbits == ref.pbits && grp->nbits == ref.nbits &&
-            mbedtls_mpi_cmp_mpi( &grp->P, &ref.P ) == 0 &&
-            mbedtls_mpi_cmp_mpi( &grp->A, &ref.A ) == 0 &&
-            mbedtls_mpi_cmp_mpi( &grp->B, &ref.B ) == 0 &&
-            mbedtls_mpi_cmp_mpi( &grp->N, &ref.N ) == 0 &&
-            mbedtls_mpi_cmp_mpi( &grp->G.X, &ref.G.X ) == 0 &&
-            mbedtls_mpi_cmp_mpi( &grp->G.Z, &ref.G.Z ) == 0 &&
-            /* For Y we may only know the parity bit, so compare only that */
-            mbedtls_mpi_get_bit( &grp->G.Y, 0 ) == mbedtls_mpi_get_bit( &ref.G.Y, 0 ) )
-        {
-            break;
-        }
-
-    }
-
-cleanup:
-    mbedtls_ecp_group_free( &ref );
-
-    *grp_id = *id;
-
-    if( ret == 0 && *id == MBEDTLS_ECP_DP_NONE )
-        ret = MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE;
-
-    return( ret );
-}
-
-/*
- * Parse a SpecifiedECDomain (SEC 1 C.2) and find the associated group ID
- */
-static int pk_group_id_from_specified( const mbedtls_asn1_buf *params,
-                                       mbedtls_ecp_group_id *grp_id )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    mbedtls_ecp_group grp;
-
-    mbedtls_ecp_group_init( &grp );
-
-    if( ( ret = pk_group_from_specified( params, &grp ) ) != 0 )
-        goto cleanup;
-
-    ret = pk_group_id_from_group( &grp, grp_id );
-
-cleanup:
-    mbedtls_ecp_group_free( &grp );
-
-    return( ret );
-}
-#endif /* MBEDTLS_PK_PARSE_EC_EXTENDED */
-
-/*
- * Use EC parameters to initialise an EC group
- *
- * ECParameters ::= CHOICE {
- *   namedCurve         OBJECT IDENTIFIER
- *   specifiedCurve     SpecifiedECDomain -- = SEQUENCE { ... }
- *   -- implicitCurve   NULL
- */
-static int pk_use_ecparams( const mbedtls_asn1_buf *params, mbedtls_ecp_group *grp )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    mbedtls_ecp_group_id grp_id;
-
-    if( params->tag == MBEDTLS_ASN1_OID )
-    {
-        if( mbedtls_oid_get_ec_grp( params, &grp_id ) != 0 )
-            return( MBEDTLS_ERR_PK_UNKNOWN_NAMED_CURVE );
-    }
-    else
-    {
-#if defined(MBEDTLS_PK_PARSE_EC_EXTENDED)
-        if( ( ret = pk_group_id_from_specified( params, &grp_id ) ) != 0 )
-            return( ret );
-#else
-        return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT );
-#endif
-    }
-
-    /*
-     * grp may already be initilialized; if so, make sure IDs match
-     */
-    if( grp->id != MBEDTLS_ECP_DP_NONE && grp->id != grp_id )
-        return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT );
-
-    if( ( ret = mbedtls_ecp_group_load( grp, grp_id ) ) != 0 )
-        return( ret );
-
-    return( 0 );
-}
-
-/*
- * EC public key is an EC point
- *
- * The caller is responsible for clearing the structure upon failure if
- * desired. Take care to pass along the possible ECP_FEATURE_UNAVAILABLE
- * return code of mbedtls_ecp_point_read_binary() and leave p in a usable state.
- */
-static int pk_get_ecpubkey( unsigned char **p, const unsigned char *end,
-                            mbedtls_ecp_keypair *key )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
-    if( ( ret = mbedtls_ecp_point_read_binary( &key->grp, &key->Q,
-                    (const unsigned char *) *p, end - *p ) ) == 0 )
-    {
-        ret = mbedtls_ecp_check_pubkey( &key->grp, &key->Q );
-    }
-
-    /*
-     * We know mbedtls_ecp_point_read_binary consumed all bytes or failed
-     */
-    *p = (unsigned char *) end;
-
-    return( ret );
-}
-#endif /* MBEDTLS_ECP_C */
-
-#if defined(MBEDTLS_RSA_C)
-/*
- *  RSAPublicKey ::= SEQUENCE {
- *      modulus           INTEGER,  -- n
- *      publicExponent    INTEGER   -- e
- *  }
- */
-static int pk_get_rsapubkey( unsigned char **p,
-                             const unsigned char *end,
-                             mbedtls_rsa_context *rsa )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    size_t len;
-
-    if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_INVALID_PUBKEY, ret ) );
-
-    if( *p + len != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_INVALID_PUBKEY,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
-
-    /* Import N */
-    if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_INTEGER ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_INVALID_PUBKEY, ret ) );
-
-    if( ( ret = mbedtls_rsa_import_raw( rsa, *p, len, NULL, 0, NULL, 0,
-                                        NULL, 0, NULL, 0 ) ) != 0 )
-        return( MBEDTLS_ERR_PK_INVALID_PUBKEY );
-
-    *p += len;
-
-    /* Import E */
-    if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_INTEGER ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_INVALID_PUBKEY, ret ) );
-
-    if( ( ret = mbedtls_rsa_import_raw( rsa, NULL, 0, NULL, 0, NULL, 0,
-                                        NULL, 0, *p, len ) ) != 0 )
-        return( MBEDTLS_ERR_PK_INVALID_PUBKEY );
-
-    *p += len;
-
-    if( mbedtls_rsa_complete( rsa ) != 0 ||
-        mbedtls_rsa_check_pubkey( rsa ) != 0 )
-    {
-        return( MBEDTLS_ERR_PK_INVALID_PUBKEY );
-    }
-
-    if( *p != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_INVALID_PUBKEY,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
-
-    return( 0 );
-}
-#endif /* MBEDTLS_RSA_C */
-
-/* Get a PK algorithm identifier
- *
- *  AlgorithmIdentifier  ::=  SEQUENCE  {
- *       algorithm               OBJECT IDENTIFIER,
- *       parameters              ANY DEFINED BY algorithm OPTIONAL  }
- */
-static int pk_get_pk_alg( unsigned char **p,
-                          const unsigned char *end,
-                          mbedtls_pk_type_t *pk_alg, mbedtls_asn1_buf *params )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    mbedtls_asn1_buf alg_oid;
-
-    memset( params, 0, sizeof(mbedtls_asn1_buf) );
-
-    if( ( ret = mbedtls_asn1_get_alg( p, end, &alg_oid, params ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_INVALID_ALG, ret ) );
-
-    if( mbedtls_oid_get_pk_alg( &alg_oid, pk_alg ) != 0 )
-        return( MBEDTLS_ERR_PK_UNKNOWN_PK_ALG );
-
-    /*
-     * No parameters with RSA (only for EC)
-     */
-    if( *pk_alg == MBEDTLS_PK_RSA &&
-            ( ( params->tag != MBEDTLS_ASN1_NULL && params->tag != 0 ) ||
-                params->len != 0 ) )
-    {
-        return( MBEDTLS_ERR_PK_INVALID_ALG );
-    }
-
-    return( 0 );
-}
-
-/*
- *  SubjectPublicKeyInfo  ::=  SEQUENCE  {
- *       algorithm            AlgorithmIdentifier,
- *       subjectPublicKey     BIT STRING }
- */
-int mbedtls_pk_parse_subpubkey( unsigned char **p, const unsigned char *end,
-                        mbedtls_pk_context *pk )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    size_t len;
-    mbedtls_asn1_buf alg_params;
-    mbedtls_pk_type_t pk_alg = MBEDTLS_PK_NONE;
-    const mbedtls_pk_info_t *pk_info;
-
-    PK_VALIDATE_RET( p != NULL );
-    PK_VALIDATE_RET( *p != NULL );
-    PK_VALIDATE_RET( end != NULL );
-    PK_VALIDATE_RET( pk != NULL );
-
-    if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
-                    MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-    {
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-    }
-
-    end = *p + len;
-
-    if( ( ret = pk_get_pk_alg( p, end, &pk_alg, &alg_params ) ) != 0 )
-        return( ret );
-
-    if( ( ret = mbedtls_asn1_get_bitstring_null( p, end, &len ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_INVALID_PUBKEY, ret ) );
-
-    if( *p + len != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_INVALID_PUBKEY,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
-
-    if( ( pk_info = mbedtls_pk_info_from_type( pk_alg ) ) == NULL )
-        return( MBEDTLS_ERR_PK_UNKNOWN_PK_ALG );
-
-    if( ( ret = mbedtls_pk_setup( pk, pk_info ) ) != 0 )
-        return( ret );
-
-#if defined(MBEDTLS_RSA_C)
-    if( pk_alg == MBEDTLS_PK_RSA )
-    {
-        ret = pk_get_rsapubkey( p, end, mbedtls_pk_rsa( *pk ) );
-    } else
-#endif /* MBEDTLS_RSA_C */
-#if defined(MBEDTLS_ECP_C)
-    if( pk_alg == MBEDTLS_PK_ECKEY_DH || pk_alg == MBEDTLS_PK_ECKEY )
-    {
-        ret = pk_use_ecparams( &alg_params, &mbedtls_pk_ec( *pk )->grp );
-        if( ret == 0 )
-            ret = pk_get_ecpubkey( p, end, mbedtls_pk_ec( *pk ) );
-    } else
-#endif /* MBEDTLS_ECP_C */
-        ret = MBEDTLS_ERR_PK_UNKNOWN_PK_ALG;
-
-    if( ret == 0 && *p != end )
-        ret = MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_INVALID_PUBKEY,
-              MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
-
-    if( ret != 0 )
-        mbedtls_pk_free( pk );
-
-    return( ret );
-}
-
-#if defined(MBEDTLS_RSA_C)
-/*
- * Wrapper around mbedtls_asn1_get_mpi() that rejects zero.
- *
- * The value zero is:
- * - never a valid value for an RSA parameter
- * - interpreted as "omitted, please reconstruct" by mbedtls_rsa_complete().
- *
- * Since values can't be omitted in PKCS#1, passing a zero value to
- * rsa_complete() would be incorrect, so reject zero values early.
- */
-static int asn1_get_nonzero_mpi( unsigned char **p,
-                                 const unsigned char *end,
-                                 mbedtls_mpi *X )
-{
-    int ret;
-
-    ret = mbedtls_asn1_get_mpi( p, end, X );
-    if( ret != 0 )
-        return( ret );
-
-    if( mbedtls_mpi_cmp_int( X, 0 ) == 0 )
-        return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT );
-
-    return( 0 );
-}
-
-/*
- * Parse a PKCS#1 encoded private RSA key
- */
-static int pk_parse_key_pkcs1_der( mbedtls_rsa_context *rsa,
-                                   const unsigned char *key,
-                                   size_t keylen )
-{
-    int ret, version;
-    size_t len;
-    unsigned char *p, *end;
-
-    mbedtls_mpi T;
-    mbedtls_mpi_init( &T );
-
-    p = (unsigned char *) key;
-    end = p + keylen;
-
-    /*
-     * This function parses the RSAPrivateKey (PKCS#1)
-     *
-     *  RSAPrivateKey ::= SEQUENCE {
-     *      version           Version,
-     *      modulus           INTEGER,  -- n
-     *      publicExponent    INTEGER,  -- e
-     *      privateExponent   INTEGER,  -- d
-     *      prime1            INTEGER,  -- p
-     *      prime2            INTEGER,  -- q
-     *      exponent1         INTEGER,  -- d mod (p-1)
-     *      exponent2         INTEGER,  -- d mod (q-1)
-     *      coefficient       INTEGER,  -- (inverse of q) mod p
-     *      otherPrimeInfos   OtherPrimeInfos OPTIONAL
-     *  }
-     */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-    {
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-    }
-
-    end = p + len;
-
-    if( ( ret = mbedtls_asn1_get_int( &p, end, &version ) ) != 0 )
-    {
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-    }
-
-    if( version != 0 )
-    {
-        return( MBEDTLS_ERR_PK_KEY_INVALID_VERSION );
-    }
-
-    /* Import N */
-    if( ( ret = asn1_get_nonzero_mpi( &p, end, &T ) ) != 0 ||
-        ( ret = mbedtls_rsa_import( rsa, &T, NULL, NULL,
-                                        NULL, NULL ) ) != 0 )
-        goto cleanup;
-
-    /* Import E */
-    if( ( ret = asn1_get_nonzero_mpi( &p, end, &T ) ) != 0 ||
-        ( ret = mbedtls_rsa_import( rsa, NULL, NULL, NULL,
-                                        NULL, &T ) ) != 0 )
-        goto cleanup;
-
-    /* Import D */
-    if( ( ret = asn1_get_nonzero_mpi( &p, end, &T ) ) != 0 ||
-        ( ret = mbedtls_rsa_import( rsa, NULL, NULL, NULL,
-                                        &T, NULL ) ) != 0 )
-        goto cleanup;
-
-    /* Import P */
-    if( ( ret = asn1_get_nonzero_mpi( &p, end, &T ) ) != 0 ||
-        ( ret = mbedtls_rsa_import( rsa, NULL, &T, NULL,
-                                        NULL, NULL ) ) != 0 )
-        goto cleanup;
-
-    /* Import Q */
-    if( ( ret = asn1_get_nonzero_mpi( &p, end, &T ) ) != 0 ||
-        ( ret = mbedtls_rsa_import( rsa, NULL, NULL, &T,
-                                        NULL, NULL ) ) != 0 )
-        goto cleanup;
-
-#if !defined(MBEDTLS_RSA_NO_CRT) && !defined(MBEDTLS_RSA_ALT)
-    /*
-    * The RSA CRT parameters DP, DQ and QP are nominally redundant, in
-    * that they can be easily recomputed from D, P and Q. However by
-    * parsing them from the PKCS1 structure it is possible to avoid
-    * recalculating them which both reduces the overhead of loading
-    * RSA private keys into memory and also avoids side channels which
-    * can arise when computing those values, since all of D, P, and Q
-    * are secret. See https://eprint.iacr.org/2020/055 for a
-    * description of one such attack.
-    */
-
-    /* Import DP */
-    if( ( ret = asn1_get_nonzero_mpi( &p, end, &T ) ) != 0 ||
-        ( ret = mbedtls_mpi_copy( &rsa->DP, &T ) ) != 0 )
-       goto cleanup;
-
-    /* Import DQ */
-    if( ( ret = asn1_get_nonzero_mpi( &p, end, &T ) ) != 0 ||
-        ( ret = mbedtls_mpi_copy( &rsa->DQ, &T ) ) != 0 )
-       goto cleanup;
-
-    /* Import QP */
-    if( ( ret = asn1_get_nonzero_mpi( &p, end, &T ) ) != 0 ||
-        ( ret = mbedtls_mpi_copy( &rsa->QP, &T ) ) != 0 )
-       goto cleanup;
-
-#else
-    /* Verify existance of the CRT params */
-    if( ( ret = asn1_get_nonzero_mpi( &p, end, &T ) ) != 0 ||
-        ( ret = asn1_get_nonzero_mpi( &p, end, &T ) ) != 0 ||
-        ( ret = asn1_get_nonzero_mpi( &p, end, &T ) ) != 0 )
-       goto cleanup;
-#endif
-
-    /* rsa_complete() doesn't complete anything with the default
-     * implementation but is still called:
-     * - for the benefit of alternative implementation that may want to
-     *   pre-compute stuff beyond what's provided (eg Montgomery factors)
-     * - as is also sanity-checks the key
-     *
-     * Furthermore, we also check the public part for consistency with
-     * mbedtls_pk_parse_pubkey(), as it includes size minima for example.
-     */
-    if( ( ret = mbedtls_rsa_complete( rsa ) ) != 0 ||
-        ( ret = mbedtls_rsa_check_pubkey( rsa ) ) != 0 )
-    {
-        goto cleanup;
-    }
-
-    if( p != end )
-    {
-        ret = MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT,
-              MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
-    }
-
-cleanup:
-
-    mbedtls_mpi_free( &T );
-
-    if( ret != 0 )
-    {
-        /* Wrap error code if it's coming from a lower level */
-        if( ( ret & 0xff80 ) == 0 )
-            ret = MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret );
-        else
-            ret = MBEDTLS_ERR_PK_KEY_INVALID_FORMAT;
-
-        mbedtls_rsa_free( rsa );
-    }
-
-    return( ret );
-}
-#endif /* MBEDTLS_RSA_C */
-
-#if defined(MBEDTLS_ECP_C)
-/*
- * Parse a SEC1 encoded private EC key
- */
-static int pk_parse_key_sec1_der( mbedtls_ecp_keypair *eck,
-                                  const unsigned char *key,
-                                  size_t keylen )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    int version, pubkey_done;
-    size_t len;
-    mbedtls_asn1_buf params;
-    unsigned char *p = (unsigned char *) key;
-    unsigned char *end = p + keylen;
-    unsigned char *end2;
-
-    /*
-     * RFC 5915, or SEC1 Appendix C.4
-     *
-     * ECPrivateKey ::= SEQUENCE {
-     *      version        INTEGER { ecPrivkeyVer1(1) } (ecPrivkeyVer1),
-     *      privateKey     OCTET STRING,
-     *      parameters [0] ECParameters {{ NamedCurve }} OPTIONAL,
-     *      publicKey  [1] BIT STRING OPTIONAL
-     *    }
-     */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-    {
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-    }
-
-    end = p + len;
-
-    if( ( ret = mbedtls_asn1_get_int( &p, end, &version ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-
-    if( version != 1 )
-        return( MBEDTLS_ERR_PK_KEY_INVALID_VERSION );
-
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len, MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-
-    if( ( ret = mbedtls_mpi_read_binary( &eck->d, p, len ) ) != 0 )
-    {
-        mbedtls_ecp_keypair_free( eck );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-    }
-
-    p += len;
-
-    pubkey_done = 0;
-    if( p != end )
-    {
-        /*
-         * Is 'parameters' present?
-         */
-        if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-                        MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 0 ) ) == 0 )
-        {
-            if( ( ret = pk_get_ecparams( &p, p + len, &params) ) != 0 ||
-                ( ret = pk_use_ecparams( &params, &eck->grp )  ) != 0 )
-            {
-                mbedtls_ecp_keypair_free( eck );
-                return( ret );
-            }
-        }
-        else if( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
-        {
-            mbedtls_ecp_keypair_free( eck );
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-        }
-    }
-
-    if( p != end )
-    {
-        /*
-         * Is 'publickey' present? If not, or if we can't read it (eg because it
-         * is compressed), create it from the private key.
-         */
-        if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-                        MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 1 ) ) == 0 )
-        {
-            end2 = p + len;
-
-            if( ( ret = mbedtls_asn1_get_bitstring_null( &p, end2, &len ) ) != 0 )
-                return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-
-            if( p + len != end2 )
-                return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT,
-                        MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
-
-            if( ( ret = pk_get_ecpubkey( &p, end2, eck ) ) == 0 )
-                pubkey_done = 1;
-            else
-            {
-                /*
-                 * The only acceptable failure mode of pk_get_ecpubkey() above
-                 * is if the point format is not recognized.
-                 */
-                if( ret != MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE )
-                    return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT );
-            }
-        }
-        else if( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
-        {
-            mbedtls_ecp_keypair_free( eck );
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-        }
-    }
-
-    if( ! pubkey_done &&
-        ( ret = mbedtls_ecp_mul( &eck->grp, &eck->Q, &eck->d, &eck->grp.G,
-                                                      NULL, NULL ) ) != 0 )
-    {
-        mbedtls_ecp_keypair_free( eck );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-    }
-
-    if( ( ret = mbedtls_ecp_check_privkey( &eck->grp, &eck->d ) ) != 0 )
-    {
-        mbedtls_ecp_keypair_free( eck );
-        return( ret );
-    }
-
-    return( 0 );
-}
-#endif /* MBEDTLS_ECP_C */
-
-/*
- * Parse an unencrypted PKCS#8 encoded private key
- *
- * Notes:
- *
- * - This function does not own the key buffer. It is the
- *   responsibility of the caller to take care of zeroizing
- *   and freeing it after use.
- *
- * - The function is responsible for freeing the provided
- *   PK context on failure.
- *
- */
-static int pk_parse_key_pkcs8_unencrypted_der(
-                                    mbedtls_pk_context *pk,
-                                    const unsigned char* key,
-                                    size_t keylen )
-{
-    int ret, version;
-    size_t len;
-    mbedtls_asn1_buf params;
-    unsigned char *p = (unsigned char *) key;
-    unsigned char *end = p + keylen;
-    mbedtls_pk_type_t pk_alg = MBEDTLS_PK_NONE;
-    const mbedtls_pk_info_t *pk_info;
-
-    /*
-     * This function parses the PrivateKeyInfo object (PKCS#8 v1.2 = RFC 5208)
-     *
-     *    PrivateKeyInfo ::= SEQUENCE {
-     *      version                   Version,
-     *      privateKeyAlgorithm       PrivateKeyAlgorithmIdentifier,
-     *      privateKey                PrivateKey,
-     *      attributes           [0]  IMPLICIT Attributes OPTIONAL }
-     *
-     *    Version ::= INTEGER
-     *    PrivateKeyAlgorithmIdentifier ::= AlgorithmIdentifier
-     *    PrivateKey ::= OCTET STRING
-     *
-     *  The PrivateKey OCTET STRING is a SEC1 ECPrivateKey
-     */
-
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-    {
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-    }
-
-    end = p + len;
-
-    if( ( ret = mbedtls_asn1_get_int( &p, end, &version ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-
-    if( version != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_VERSION, ret ) );
-
-    if( ( ret = pk_get_pk_alg( &p, end, &pk_alg, &params ) ) != 0 )
-    {
-        return( ret );
-    }
-
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len, MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-
-    if( len < 1 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_OUT_OF_DATA ) );
-
-    if( ( pk_info = mbedtls_pk_info_from_type( pk_alg ) ) == NULL )
-        return( MBEDTLS_ERR_PK_UNKNOWN_PK_ALG );
-
-    if( ( ret = mbedtls_pk_setup( pk, pk_info ) ) != 0 )
-        return( ret );
-
-#if defined(MBEDTLS_RSA_C)
-    if( pk_alg == MBEDTLS_PK_RSA )
-    {
-        if( ( ret = pk_parse_key_pkcs1_der( mbedtls_pk_rsa( *pk ), p, len ) ) != 0 )
-        {
-            mbedtls_pk_free( pk );
-            return( ret );
-        }
-    } else
-#endif /* MBEDTLS_RSA_C */
-#if defined(MBEDTLS_ECP_C)
-    if( pk_alg == MBEDTLS_PK_ECKEY || pk_alg == MBEDTLS_PK_ECKEY_DH )
-    {
-        if( ( ret = pk_use_ecparams( &params, &mbedtls_pk_ec( *pk )->grp ) ) != 0 ||
-            ( ret = pk_parse_key_sec1_der( mbedtls_pk_ec( *pk ), p, len )  ) != 0 )
-        {
-            mbedtls_pk_free( pk );
-            return( ret );
-        }
-    } else
-#endif /* MBEDTLS_ECP_C */
-        return( MBEDTLS_ERR_PK_UNKNOWN_PK_ALG );
-
-    return( 0 );
-}
-
-/*
- * Parse an encrypted PKCS#8 encoded private key
- *
- * To save space, the decryption happens in-place on the given key buffer.
- * Also, while this function may modify the keybuffer, it doesn't own it,
- * and instead it is the responsibility of the caller to zeroize and properly
- * free it after use.
- *
- */
-#if defined(MBEDTLS_PKCS12_C) || defined(MBEDTLS_PKCS5_C)
-static int pk_parse_key_pkcs8_encrypted_der(
-                                    mbedtls_pk_context *pk,
-                                    unsigned char *key, size_t keylen,
-                                    const unsigned char *pwd, size_t pwdlen )
-{
-    int ret, decrypted = 0;
-    size_t len;
-    unsigned char *buf;
-    unsigned char *p, *end;
-    mbedtls_asn1_buf pbe_alg_oid, pbe_params;
-#if defined(MBEDTLS_PKCS12_C)
-    mbedtls_cipher_type_t cipher_alg;
-    mbedtls_md_type_t md_alg;
-#endif
-
-    p = key;
-    end = p + keylen;
-
-    if( pwdlen == 0 )
-        return( MBEDTLS_ERR_PK_PASSWORD_REQUIRED );
-
-    /*
-     * This function parses the EncryptedPrivateKeyInfo object (PKCS#8)
-     *
-     *  EncryptedPrivateKeyInfo ::= SEQUENCE {
-     *    encryptionAlgorithm  EncryptionAlgorithmIdentifier,
-     *    encryptedData        EncryptedData
-     *  }
-     *
-     *  EncryptionAlgorithmIdentifier ::= AlgorithmIdentifier
-     *
-     *  EncryptedData ::= OCTET STRING
-     *
-     *  The EncryptedData OCTET STRING is a PKCS#8 PrivateKeyInfo
-     *
-     */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-    {
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-    }
-
-    end = p + len;
-
-    if( ( ret = mbedtls_asn1_get_alg( &p, end, &pbe_alg_oid, &pbe_params ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len, MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret ) );
-
-    buf = p;
-
-    /*
-     * Decrypt EncryptedData with appropriate PBE
-     */
-#if defined(MBEDTLS_PKCS12_C)
-    if( mbedtls_oid_get_pkcs12_pbe_alg( &pbe_alg_oid, &md_alg, &cipher_alg ) == 0 )
-    {
-        if( ( ret = mbedtls_pkcs12_pbe( &pbe_params, MBEDTLS_PKCS12_PBE_DECRYPT,
-                                cipher_alg, md_alg,
-                                pwd, pwdlen, p, len, buf ) ) != 0 )
-        {
-            if( ret == MBEDTLS_ERR_PKCS12_PASSWORD_MISMATCH )
-                return( MBEDTLS_ERR_PK_PASSWORD_MISMATCH );
-
-            return( ret );
-        }
-
-        decrypted = 1;
-    }
-    else if( MBEDTLS_OID_CMP( MBEDTLS_OID_PKCS12_PBE_SHA1_RC4_128, &pbe_alg_oid ) == 0 )
-    {
-        if( ( ret = mbedtls_pkcs12_pbe_sha1_rc4_128( &pbe_params,
-                                             MBEDTLS_PKCS12_PBE_DECRYPT,
-                                             pwd, pwdlen,
-                                             p, len, buf ) ) != 0 )
-        {
-            return( ret );
-        }
-
-        // Best guess for password mismatch when using RC4. If first tag is
-        // not MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE
-        //
-        if( *buf != ( MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) )
-            return( MBEDTLS_ERR_PK_PASSWORD_MISMATCH );
-
-        decrypted = 1;
-    }
-    else
-#endif /* MBEDTLS_PKCS12_C */
-#if defined(MBEDTLS_PKCS5_C)
-    if( MBEDTLS_OID_CMP( MBEDTLS_OID_PKCS5_PBES2, &pbe_alg_oid ) == 0 )
-    {
-        if( ( ret = mbedtls_pkcs5_pbes2( &pbe_params, MBEDTLS_PKCS5_DECRYPT, pwd, pwdlen,
-                                  p, len, buf ) ) != 0 )
-        {
-            if( ret == MBEDTLS_ERR_PKCS5_PASSWORD_MISMATCH )
-                return( MBEDTLS_ERR_PK_PASSWORD_MISMATCH );
-
-            return( ret );
-        }
-
-        decrypted = 1;
-    }
-    else
-#endif /* MBEDTLS_PKCS5_C */
-    {
-        ((void) pwd);
-    }
-
-    if( decrypted == 0 )
-        return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
-
-    return( pk_parse_key_pkcs8_unencrypted_der( pk, buf, len ) );
-}
-#endif /* MBEDTLS_PKCS12_C || MBEDTLS_PKCS5_C */
-
-/*
- * Parse a private key
- */
-int mbedtls_pk_parse_key( mbedtls_pk_context *pk,
-                  const unsigned char *key, size_t keylen,
-                  const unsigned char *pwd, size_t pwdlen )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    const mbedtls_pk_info_t *pk_info;
-#if defined(MBEDTLS_PEM_PARSE_C)
-    size_t len;
-    mbedtls_pem_context pem;
-#endif
-
-    PK_VALIDATE_RET( pk != NULL );
-    if( keylen == 0 )
-        return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT );
-    PK_VALIDATE_RET( key != NULL );
-
-#if defined(MBEDTLS_PEM_PARSE_C)
-   mbedtls_pem_init( &pem );
-
-#if defined(MBEDTLS_RSA_C)
-    /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */
-    if( key[keylen - 1] != '\0' )
-        ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT;
-    else
-        ret = mbedtls_pem_read_buffer( &pem,
-                               "-----BEGIN RSA PRIVATE KEY-----",
-                               "-----END RSA PRIVATE KEY-----",
-                               key, pwd, pwdlen, &len );
-
-    if( ret == 0 )
-    {
-        pk_info = mbedtls_pk_info_from_type( MBEDTLS_PK_RSA );
-        if( ( ret = mbedtls_pk_setup( pk, pk_info ) ) != 0 ||
-            ( ret = pk_parse_key_pkcs1_der( mbedtls_pk_rsa( *pk ),
-                                            pem.buf, pem.buflen ) ) != 0 )
-        {
-            mbedtls_pk_free( pk );
-        }
-
-        mbedtls_pem_free( &pem );
-        return( ret );
-    }
-    else if( ret == MBEDTLS_ERR_PEM_PASSWORD_MISMATCH )
-        return( MBEDTLS_ERR_PK_PASSWORD_MISMATCH );
-    else if( ret == MBEDTLS_ERR_PEM_PASSWORD_REQUIRED )
-        return( MBEDTLS_ERR_PK_PASSWORD_REQUIRED );
-    else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
-        return( ret );
-#endif /* MBEDTLS_RSA_C */
-
-#if defined(MBEDTLS_ECP_C)
-    /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */
-    if( key[keylen - 1] != '\0' )
-        ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT;
-    else
-        ret = mbedtls_pem_read_buffer( &pem,
-                               "-----BEGIN EC PRIVATE KEY-----",
-                               "-----END EC PRIVATE KEY-----",
-                               key, pwd, pwdlen, &len );
-    if( ret == 0 )
-    {
-        pk_info = mbedtls_pk_info_from_type( MBEDTLS_PK_ECKEY );
-
-        if( ( ret = mbedtls_pk_setup( pk, pk_info ) ) != 0 ||
-            ( ret = pk_parse_key_sec1_der( mbedtls_pk_ec( *pk ),
-                                           pem.buf, pem.buflen ) ) != 0 )
-        {
-            mbedtls_pk_free( pk );
-        }
-
-        mbedtls_pem_free( &pem );
-        return( ret );
-    }
-    else if( ret == MBEDTLS_ERR_PEM_PASSWORD_MISMATCH )
-        return( MBEDTLS_ERR_PK_PASSWORD_MISMATCH );
-    else if( ret == MBEDTLS_ERR_PEM_PASSWORD_REQUIRED )
-        return( MBEDTLS_ERR_PK_PASSWORD_REQUIRED );
-    else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
-        return( ret );
-#endif /* MBEDTLS_ECP_C */
-
-    /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */
-    if( key[keylen - 1] != '\0' )
-        ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT;
-    else
-        ret = mbedtls_pem_read_buffer( &pem,
-                               "-----BEGIN PRIVATE KEY-----",
-                               "-----END PRIVATE KEY-----",
-                               key, NULL, 0, &len );
-    if( ret == 0 )
-    {
-        if( ( ret = pk_parse_key_pkcs8_unencrypted_der( pk,
-                                                pem.buf, pem.buflen ) ) != 0 )
-        {
-            mbedtls_pk_free( pk );
-        }
-
-        mbedtls_pem_free( &pem );
-        return( ret );
-    }
-    else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
-        return( ret );
-
-#if defined(MBEDTLS_PKCS12_C) || defined(MBEDTLS_PKCS5_C)
-    /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */
-    if( key[keylen - 1] != '\0' )
-        ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT;
-    else
-        ret = mbedtls_pem_read_buffer( &pem,
-                               "-----BEGIN ENCRYPTED PRIVATE KEY-----",
-                               "-----END ENCRYPTED PRIVATE KEY-----",
-                               key, NULL, 0, &len );
-    if( ret == 0 )
-    {
-        if( ( ret = pk_parse_key_pkcs8_encrypted_der( pk,
-                                                      pem.buf, pem.buflen,
-                                                      pwd, pwdlen ) ) != 0 )
-        {
-            mbedtls_pk_free( pk );
-        }
-
-        mbedtls_pem_free( &pem );
-        return( ret );
-    }
-    else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
-        return( ret );
-#endif /* MBEDTLS_PKCS12_C || MBEDTLS_PKCS5_C */
-#else
-    ((void) pwd);
-    ((void) pwdlen);
-#endif /* MBEDTLS_PEM_PARSE_C */
-
-    /*
-     * At this point we only know it's not a PEM formatted key. Could be any
-     * of the known DER encoded private key formats
-     *
-     * We try the different DER format parsers to see if one passes without
-     * error
-     */
-#if defined(MBEDTLS_PKCS12_C) || defined(MBEDTLS_PKCS5_C)
-    {
-        unsigned char *key_copy;
-
-        if( ( key_copy = mbedtls_calloc( 1, keylen ) ) == NULL )
-            return( MBEDTLS_ERR_PK_ALLOC_FAILED );
-
-        memcpy( key_copy, key, keylen );
-
-        ret = pk_parse_key_pkcs8_encrypted_der( pk, key_copy, keylen,
-                                                pwd, pwdlen );
-
-        mbedtls_platform_zeroize( key_copy, keylen );
-        mbedtls_free( key_copy );
-    }
-
-    if( ret == 0 )
-        return( 0 );
-
-    mbedtls_pk_free( pk );
-    mbedtls_pk_init( pk );
-
-    if( ret == MBEDTLS_ERR_PK_PASSWORD_MISMATCH )
-    {
-        return( ret );
-    }
-#endif /* MBEDTLS_PKCS12_C || MBEDTLS_PKCS5_C */
-
-    if( ( ret = pk_parse_key_pkcs8_unencrypted_der( pk, key, keylen ) ) == 0 )
-        return( 0 );
-
-    mbedtls_pk_free( pk );
-    mbedtls_pk_init( pk );
-
-#if defined(MBEDTLS_RSA_C)
-
-    pk_info = mbedtls_pk_info_from_type( MBEDTLS_PK_RSA );
-    if( mbedtls_pk_setup( pk, pk_info ) == 0 &&
-        pk_parse_key_pkcs1_der( mbedtls_pk_rsa( *pk ), key, keylen ) == 0 )
-    {
-        return( 0 );
-    }
-
-    mbedtls_pk_free( pk );
-    mbedtls_pk_init( pk );
-#endif /* MBEDTLS_RSA_C */
-
-#if defined(MBEDTLS_ECP_C)
-    pk_info = mbedtls_pk_info_from_type( MBEDTLS_PK_ECKEY );
-    if( mbedtls_pk_setup( pk, pk_info ) == 0 &&
-        pk_parse_key_sec1_der( mbedtls_pk_ec( *pk ),
-                               key, keylen ) == 0 )
-    {
-        return( 0 );
-    }
-    mbedtls_pk_free( pk );
-#endif /* MBEDTLS_ECP_C */
-
-    /* If MBEDTLS_RSA_C is defined but MBEDTLS_ECP_C isn't,
-     * it is ok to leave the PK context initialized but not
-     * freed: It is the caller's responsibility to call pk_init()
-     * before calling this function, and to call pk_free()
-     * when it fails. If MBEDTLS_ECP_C is defined but MBEDTLS_RSA_C
-     * isn't, this leads to mbedtls_pk_free() being called
-     * twice, once here and once by the caller, but this is
-     * also ok and in line with the mbedtls_pk_free() calls
-     * on failed PEM parsing attempts. */
-
-    return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT );
-}
-
-/*
- * Parse a public key
- */
-int mbedtls_pk_parse_public_key( mbedtls_pk_context *ctx,
-                         const unsigned char *key, size_t keylen )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    unsigned char *p;
-#if defined(MBEDTLS_RSA_C)
-    const mbedtls_pk_info_t *pk_info;
-#endif
-#if defined(MBEDTLS_PEM_PARSE_C)
-    size_t len;
-    mbedtls_pem_context pem;
-#endif
-
-    PK_VALIDATE_RET( ctx != NULL );
-    if( keylen == 0 )
-        return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT );
-    PK_VALIDATE_RET( key != NULL || keylen == 0 );
-
-#if defined(MBEDTLS_PEM_PARSE_C)
-    mbedtls_pem_init( &pem );
-#if defined(MBEDTLS_RSA_C)
-    /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */
-    if( key[keylen - 1] != '\0' )
-        ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT;
-    else
-        ret = mbedtls_pem_read_buffer( &pem,
-                               "-----BEGIN RSA PUBLIC KEY-----",
-                               "-----END RSA PUBLIC KEY-----",
-                               key, NULL, 0, &len );
-
-    if( ret == 0 )
-    {
-        p = pem.buf;
-        if( ( pk_info = mbedtls_pk_info_from_type( MBEDTLS_PK_RSA ) ) == NULL )
-            return( MBEDTLS_ERR_PK_UNKNOWN_PK_ALG );
-
-        if( ( ret = mbedtls_pk_setup( ctx, pk_info ) ) != 0 )
-            return( ret );
-
-        if ( ( ret = pk_get_rsapubkey( &p, p + pem.buflen, mbedtls_pk_rsa( *ctx ) ) ) != 0 )
-            mbedtls_pk_free( ctx );
-
-        mbedtls_pem_free( &pem );
-        return( ret );
-    }
-    else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
-    {
-        mbedtls_pem_free( &pem );
-        return( ret );
-    }
-#endif /* MBEDTLS_RSA_C */
-
-    /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */
-    if( key[keylen - 1] != '\0' )
-        ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT;
-    else
-        ret = mbedtls_pem_read_buffer( &pem,
-                "-----BEGIN PUBLIC KEY-----",
-                "-----END PUBLIC KEY-----",
-                key, NULL, 0, &len );
-
-    if( ret == 0 )
-    {
-        /*
-         * Was PEM encoded
-         */
-        p = pem.buf;
-
-        ret = mbedtls_pk_parse_subpubkey( &p,  p + pem.buflen, ctx );
-        mbedtls_pem_free( &pem );
-        return( ret );
-    }
-    else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
-    {
-        mbedtls_pem_free( &pem );
-        return( ret );
-    }
-    mbedtls_pem_free( &pem );
-#endif /* MBEDTLS_PEM_PARSE_C */
-
-#if defined(MBEDTLS_RSA_C)
-    if( ( pk_info = mbedtls_pk_info_from_type( MBEDTLS_PK_RSA ) ) == NULL )
-        return( MBEDTLS_ERR_PK_UNKNOWN_PK_ALG );
-
-    if( ( ret = mbedtls_pk_setup( ctx, pk_info ) ) != 0 )
-        return( ret );
-
-    p = (unsigned char *)key;
-    ret = pk_get_rsapubkey( &p, p + keylen, mbedtls_pk_rsa( *ctx ) );
-    if( ret == 0 )
-    {
-        return( ret );
-    }
-    mbedtls_pk_free( ctx );
-    if( ret != ( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PK_INVALID_PUBKEY,
-                                    MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) ) )
-    {
-        return( ret );
-    }
-#endif /* MBEDTLS_RSA_C */
-    p = (unsigned char *) key;
-
-    ret = mbedtls_pk_parse_subpubkey( &p, p + keylen, ctx );
-
-    return( ret );
-}
-
-#endif /* MBEDTLS_PK_PARSE_C */