mirror of
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Update external polarssl to 1.3.8
There were some fixes back on March 13th, 2014 for fixing compiling on MIPS64. Also some fixes on June 25th, 2014 for SPARC64 fixes. Probably more things, but those are what I care about.
This commit is contained in:
Ryan Houdek
350
Externals/polarssl/library/pkparse.c
vendored
350
Externals/polarssl/library/pkparse.c
vendored
@ -1,7 +1,7 @@
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/*
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* Public Key layer for parsing key files and structures
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*
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* Copyright (C) 2006-2013, Brainspark B.V.
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* Copyright (C) 2006-2014, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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@ -23,7 +23,11 @@
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#if !defined(POLARSSL_CONFIG_FILE)
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#include "polarssl/config.h"
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#else
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#include POLARSSL_CONFIG_FILE
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#endif
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#if defined(POLARSSL_PK_PARSE_C)
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@ -50,8 +54,8 @@
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#include "polarssl/pkcs12.h"
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#endif
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#if defined(POLARSSL_MEMORY_C)
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#include "polarssl/memory.h"
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#if defined(POLARSSL_PLATFORM_C)
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#include "polarssl/platform.h"
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#else
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#include <stdlib.h>
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#define polarssl_malloc malloc
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@ -59,6 +63,11 @@
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#endif
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#if defined(POLARSSL_FS_IO)
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/* Implementation that should never be optimized out by the compiler */
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static void polarssl_zeroize( void *v, size_t n ) {
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volatile unsigned char *p = v; while( n-- ) *p++ = 0;
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}
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/*
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* Load all data from a file into a given buffer.
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*/
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@ -111,7 +120,7 @@ int pk_parse_keyfile( pk_context *ctx,
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size_t n;
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unsigned char *buf;
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if ( (ret = load_file( path, &buf, &n ) ) != 0 )
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if( ( ret = load_file( path, &buf, &n ) ) != 0 )
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return( ret );
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if( pwd == NULL )
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@ -120,7 +129,7 @@ int pk_parse_keyfile( pk_context *ctx,
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ret = pk_parse_key( ctx, buf, n,
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(const unsigned char *) pwd, strlen( pwd ) );
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memset( buf, 0, n + 1 );
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polarssl_zeroize( buf, n + 1 );
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polarssl_free( buf );
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return( ret );
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@ -135,12 +144,12 @@ int pk_parse_public_keyfile( pk_context *ctx, const char *path )
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size_t n;
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unsigned char *buf;
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if ( (ret = load_file( path, &buf, &n ) ) != 0 )
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if( ( ret = load_file( path, &buf, &n ) ) != 0 )
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return( ret );
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ret = pk_parse_public_key( ctx, buf, n );
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memset( buf, 0, n + 1 );
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polarssl_zeroize( buf, n + 1 );
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polarssl_free( buf );
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return( ret );
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@ -148,12 +157,12 @@ int pk_parse_public_keyfile( pk_context *ctx, const char *path )
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#endif /* POLARSSL_FS_IO */
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#if defined(POLARSSL_ECP_C)
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/* Get an EC group id from an ECParameters buffer
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/* Minimally parse an ECParameters buffer to and asn1_buf
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*
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* ECParameters ::= CHOICE {
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* namedCurve OBJECT IDENTIFIER
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* specifiedCurve SpecifiedECDomain -- = SEQUENCE { ... }
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* -- implicitCurve NULL
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* -- specifiedCurve SpecifiedECDomain
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* }
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*/
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static int pk_get_ecparams( unsigned char **p, const unsigned char *end,
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@ -161,10 +170,22 @@ static int pk_get_ecparams( unsigned char **p, const unsigned char *end,
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{
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int ret;
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/* Tag may be either OID or SEQUENCE */
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params->tag = **p;
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if( params->tag != ASN1_OID
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#if defined(POLARSSL_PK_PARSE_EC_EXTENDED)
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&& params->tag != ( ASN1_CONSTRUCTED | ASN1_SEQUENCE )
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#endif
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)
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{
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return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT +
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POLARSSL_ERR_ASN1_UNEXPECTED_TAG );
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}
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if( ( ret = asn1_get_tag( p, end, ¶ms->len, ASN1_OID ) ) != 0 )
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if( ( ret = asn1_get_tag( p, end, ¶ms->len, params->tag ) ) != 0 )
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{
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return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT + ret );
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}
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params->p = *p;
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*p += params->len;
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@ -176,16 +197,262 @@ static int pk_get_ecparams( unsigned char **p, const unsigned char *end,
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return( 0 );
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}
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#if defined(POLARSSL_PK_PARSE_EC_EXTENDED)
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/*
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* Parse a SpecifiedECDomain (SEC 1 C.2) and (mostly) fill the group with it.
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* WARNING: the resulting group should only be used with
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* pk_group_id_from_specified(), since its base point may not be set correctly
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* if it was encoded compressed.
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*
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* SpecifiedECDomain ::= SEQUENCE {
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* version SpecifiedECDomainVersion(ecdpVer1 | ecdpVer2 | ecdpVer3, ...),
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* fieldID FieldID {{FieldTypes}},
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* curve Curve,
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* base ECPoint,
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* order INTEGER,
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* cofactor INTEGER OPTIONAL,
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* hash HashAlgorithm OPTIONAL,
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* ...
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* }
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*
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* We only support prime-field as field type, and ignore hash and cofactor.
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*/
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static int pk_group_from_specified( const asn1_buf *params, ecp_group *grp )
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{
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int ret;
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unsigned char *p = params->p;
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const unsigned char * const end = params->p + params->len;
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const unsigned char *end_field, *end_curve;
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size_t len;
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int ver;
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/* SpecifiedECDomainVersion ::= INTEGER { 1, 2, 3 } */
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if( ( ret = asn1_get_int( &p, end, &ver ) ) != 0 )
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return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT + ret );
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if( ver < 1 || ver > 3 )
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return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT );
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/*
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* FieldID { FIELD-ID:IOSet } ::= SEQUENCE { -- Finite field
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* fieldType FIELD-ID.&id({IOSet}),
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* parameters FIELD-ID.&Type({IOSet}{@fieldType})
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* }
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*/
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if( ( ret = asn1_get_tag( &p, end, &len,
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ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 )
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return( ret );
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end_field = p + len;
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/*
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* FIELD-ID ::= TYPE-IDENTIFIER
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* FieldTypes FIELD-ID ::= {
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* { Prime-p IDENTIFIED BY prime-field } |
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* { Characteristic-two IDENTIFIED BY characteristic-two-field }
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* }
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* prime-field OBJECT IDENTIFIER ::= { id-fieldType 1 }
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*/
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if( ( ret = asn1_get_tag( &p, end_field, &len, ASN1_OID ) ) != 0 )
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return( ret );
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if( len != OID_SIZE( OID_ANSI_X9_62_PRIME_FIELD ) ||
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memcmp( p, OID_ANSI_X9_62_PRIME_FIELD, len ) != 0 )
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{
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return( POLARSSL_ERR_PK_FEATURE_UNAVAILABLE );
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}
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p += len;
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/* Prime-p ::= INTEGER -- Field of size p. */
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if( ( ret = asn1_get_mpi( &p, end_field, &grp->P ) ) != 0 )
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return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT + ret );
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grp->pbits = mpi_msb( &grp->P );
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if( p != end_field )
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return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT +
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POLARSSL_ERR_ASN1_LENGTH_MISMATCH );
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/*
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* Curve ::= SEQUENCE {
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* a FieldElement,
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* b FieldElement,
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* seed BIT STRING OPTIONAL
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* -- Shall be present if used in SpecifiedECDomain
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* -- with version equal to ecdpVer2 or ecdpVer3
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* }
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*/
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if( ( ret = asn1_get_tag( &p, end, &len,
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ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 )
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return( ret );
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end_curve = p + len;
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/*
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* FieldElement ::= OCTET STRING
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* containing an integer in the case of a prime field
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*/
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if( ( ret = asn1_get_tag( &p, end_curve, &len, ASN1_OCTET_STRING ) ) != 0 ||
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( ret = mpi_read_binary( &grp->A, p, len ) ) != 0 )
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{
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return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT + ret );
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}
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p += len;
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if( ( ret = asn1_get_tag( &p, end_curve, &len, ASN1_OCTET_STRING ) ) != 0 ||
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( ret = mpi_read_binary( &grp->B, p, len ) ) != 0 )
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{
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return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT + ret );
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}
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p += len;
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/* Ignore seed BIT STRING OPTIONAL */
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if( ( ret = asn1_get_tag( &p, end_curve, &len, ASN1_BIT_STRING ) ) == 0 )
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p += len;
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if( p != end_curve )
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return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT +
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POLARSSL_ERR_ASN1_LENGTH_MISMATCH );
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/*
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* ECPoint ::= OCTET STRING
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*/
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if( ( ret = asn1_get_tag( &p, end, &len, ASN1_OCTET_STRING ) ) != 0 )
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return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT + ret );
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if( ( ret = ecp_point_read_binary( grp, &grp->G,
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( const unsigned char *) p, len ) ) != 0 )
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{
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/*
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* If we can't read the point because it's compressed, cheat by
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* reading only the X coordinate and the parity bit of Y.
|
||||
*/
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if( ret != POLARSSL_ERR_ECP_FEATURE_UNAVAILABLE ||
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( p[0] != 0x02 && p[0] != 0x03 ) ||
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len != mpi_size( &grp->P ) + 1 ||
|
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mpi_read_binary( &grp->G.X, p + 1, len - 1 ) != 0 ||
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mpi_lset( &grp->G.Y, p[0] - 2 ) != 0 ||
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mpi_lset( &grp->G.Z, 1 ) != 0 )
|
||||
{
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return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT );
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}
|
||||
}
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||||
|
||||
p += len;
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||||
|
||||
/*
|
||||
* order INTEGER
|
||||
*/
|
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if( ( ret = asn1_get_mpi( &p, end, &grp->N ) ) )
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||||
return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT + ret );
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||||
|
||||
grp->nbits = mpi_msb( &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 ecp_group *grp, ecp_group_id *grp_id )
|
||||
{
|
||||
int ret = 0;
|
||||
ecp_group ref;
|
||||
const ecp_group_id *id;
|
||||
|
||||
ecp_group_init( &ref );
|
||||
|
||||
for( id = ecp_grp_id_list(); *id != POLARSSL_ECP_DP_NONE; id++ )
|
||||
{
|
||||
/* Load the group associated to that id */
|
||||
ecp_group_free( &ref );
|
||||
MPI_CHK( ecp_use_known_dp( &ref, *id ) );
|
||||
|
||||
/* Compare to the group we were given, starting with easy tests */
|
||||
if( grp->pbits == ref.pbits && grp->nbits == ref.nbits &&
|
||||
mpi_cmp_mpi( &grp->P, &ref.P ) == 0 &&
|
||||
mpi_cmp_mpi( &grp->A, &ref.A ) == 0 &&
|
||||
mpi_cmp_mpi( &grp->B, &ref.B ) == 0 &&
|
||||
mpi_cmp_mpi( &grp->N, &ref.N ) == 0 &&
|
||||
mpi_cmp_mpi( &grp->G.X, &ref.G.X ) == 0 &&
|
||||
mpi_cmp_mpi( &grp->G.Z, &ref.G.Z ) == 0 &&
|
||||
/* For Y we may only know the parity bit, so compare only that */
|
||||
mpi_get_bit( &grp->G.Y, 0 ) == mpi_get_bit( &ref.G.Y, 0 ) )
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
cleanup:
|
||||
ecp_group_free( &ref );
|
||||
|
||||
*grp_id = *id;
|
||||
|
||||
if( ret == 0 && *id == POLARSSL_ECP_DP_NONE )
|
||||
ret = POLARSSL_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 asn1_buf *params,
|
||||
ecp_group_id *grp_id )
|
||||
{
|
||||
int ret;
|
||||
ecp_group grp;
|
||||
|
||||
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:
|
||||
ecp_group_free( &grp );
|
||||
|
||||
return( ret );
|
||||
}
|
||||
#endif /* POLARSSL_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 asn1_buf *params, ecp_group *grp )
|
||||
{
|
||||
int ret;
|
||||
ecp_group_id grp_id;
|
||||
|
||||
if( oid_get_ec_grp( params, &grp_id ) != 0 )
|
||||
return( POLARSSL_ERR_PK_UNKNOWN_NAMED_CURVE );
|
||||
if( params->tag == ASN1_OID )
|
||||
{
|
||||
if( oid_get_ec_grp( params, &grp_id ) != 0 )
|
||||
return( POLARSSL_ERR_PK_UNKNOWN_NAMED_CURVE );
|
||||
}
|
||||
else
|
||||
{
|
||||
#if defined(POLARSSL_PK_PARSE_EC_EXTENDED)
|
||||
if( ( ret = pk_group_id_from_specified( params, &grp_id ) ) != 0 )
|
||||
return( ret );
|
||||
#else
|
||||
return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT );
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
* grp may already be initilialized; if so, make sure IDs match
|
||||
@ -201,6 +468,10 @@ static int pk_use_ecparams( const asn1_buf *params, ecp_group *grp )
|
||||
|
||||
/*
|
||||
* 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 ecp_point_read_binary() and leave p in a usable state.
|
||||
*/
|
||||
static int pk_get_ecpubkey( unsigned char **p, const unsigned char *end,
|
||||
ecp_keypair *key )
|
||||
@ -208,19 +479,17 @@ static int pk_get_ecpubkey( unsigned char **p, const unsigned char *end,
|
||||
int ret;
|
||||
|
||||
if( ( ret = ecp_point_read_binary( &key->grp, &key->Q,
|
||||
(const unsigned char *) *p, end - *p ) ) != 0 ||
|
||||
( ret = ecp_check_pubkey( &key->grp, &key->Q ) ) != 0 )
|
||||
(const unsigned char *) *p, end - *p ) ) == 0 )
|
||||
{
|
||||
ecp_keypair_free( key );
|
||||
return( POLARSSL_ERR_PK_INVALID_PUBKEY );
|
||||
ret = ecp_check_pubkey( &key->grp, &key->Q );
|
||||
}
|
||||
|
||||
/*
|
||||
* We know ecp_point_read_binary consumed all bytes
|
||||
* We know ecp_point_read_binary consumed all bytes or failed
|
||||
*/
|
||||
*p = (unsigned char *) end;
|
||||
|
||||
return( 0 );
|
||||
return( ret );
|
||||
}
|
||||
#endif /* POLARSSL_ECP_C */
|
||||
|
||||
@ -451,7 +720,7 @@ static int pk_parse_key_sec1_der( ecp_keypair *eck,
|
||||
size_t keylen )
|
||||
{
|
||||
int ret;
|
||||
int version;
|
||||
int version, pubkey_done;
|
||||
size_t len;
|
||||
asn1_buf params;
|
||||
unsigned char *p = (unsigned char *) key;
|
||||
@ -513,8 +782,10 @@ static int pk_parse_key_sec1_der( ecp_keypair *eck,
|
||||
}
|
||||
|
||||
/*
|
||||
* Is 'publickey' present? If not, create it from the private key.
|
||||
* Is 'publickey' present? If not, or if we can't read it (eg because it
|
||||
* is compressed), create it from the private key.
|
||||
*/
|
||||
pubkey_done = 0;
|
||||
if( ( ret = asn1_get_tag( &p, end, &len,
|
||||
ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTED | 1 ) ) == 0 )
|
||||
{
|
||||
@ -527,16 +798,27 @@ static int pk_parse_key_sec1_der( ecp_keypair *eck,
|
||||
return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT +
|
||||
POLARSSL_ERR_ASN1_LENGTH_MISMATCH );
|
||||
|
||||
if( ( ret = pk_get_ecpubkey( &p, end2, eck ) ) != 0 )
|
||||
return( ret );
|
||||
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 != POLARSSL_ERR_ECP_FEATURE_UNAVAILABLE )
|
||||
return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT );
|
||||
}
|
||||
}
|
||||
else if ( ret != POLARSSL_ERR_ASN1_UNEXPECTED_TAG )
|
||||
else if( ret != POLARSSL_ERR_ASN1_UNEXPECTED_TAG )
|
||||
{
|
||||
ecp_keypair_free( eck );
|
||||
return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT + ret );
|
||||
}
|
||||
else if( ( ret = ecp_mul( &eck->grp, &eck->Q, &eck->d, &eck->grp.G,
|
||||
NULL, NULL ) ) != 0 )
|
||||
|
||||
if( ! pubkey_done &&
|
||||
( ret = ecp_mul( &eck->grp, &eck->Q, &eck->d, &eck->grp.G,
|
||||
NULL, NULL ) ) != 0 )
|
||||
{
|
||||
ecp_keypair_free( eck );
|
||||
return( POLARSSL_ERR_PK_KEY_INVALID_FORMAT + ret );
|
||||
@ -548,7 +830,7 @@ static int pk_parse_key_sec1_der( ecp_keypair *eck,
|
||||
return( ret );
|
||||
}
|
||||
|
||||
return 0;
|
||||
return( 0 );
|
||||
}
|
||||
#endif /* POLARSSL_ECP_C */
|
||||
|
||||
@ -637,7 +919,7 @@ static int pk_parse_key_pkcs8_unencrypted_der(
|
||||
#endif /* POLARSSL_ECP_C */
|
||||
return( POLARSSL_ERR_PK_UNKNOWN_PK_ALG );
|
||||
|
||||
return 0;
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
/*
|
||||
@ -648,7 +930,7 @@ static int pk_parse_key_pkcs8_encrypted_der(
|
||||
const unsigned char *key, size_t keylen,
|
||||
const unsigned char *pwd, size_t pwdlen )
|
||||
{
|
||||
int ret;
|
||||
int ret, decrypted = 0;
|
||||
size_t len;
|
||||
unsigned char buf[2048];
|
||||
unsigned char *p, *end;
|
||||
@ -712,6 +994,8 @@ static int pk_parse_key_pkcs8_encrypted_der(
|
||||
|
||||
return( ret );
|
||||
}
|
||||
|
||||
decrypted = 1;
|
||||
}
|
||||
else if( OID_CMP( OID_PKCS12_PBE_SHA1_RC4_128, &pbe_alg_oid ) )
|
||||
{
|
||||
@ -728,6 +1012,8 @@ static int pk_parse_key_pkcs8_encrypted_der(
|
||||
//
|
||||
if( *buf != ( ASN1_CONSTRUCTED | ASN1_SEQUENCE ) )
|
||||
return( POLARSSL_ERR_PK_PASSWORD_MISMATCH );
|
||||
|
||||
decrypted = 1;
|
||||
}
|
||||
else
|
||||
#endif /* POLARSSL_PKCS12_C */
|
||||
@ -742,14 +1028,18 @@ static int pk_parse_key_pkcs8_encrypted_der(
|
||||
|
||||
return( ret );
|
||||
}
|
||||
|
||||
decrypted = 1;
|
||||
}
|
||||
else
|
||||
#endif /* POLARSSL_PKCS5_C */
|
||||
{
|
||||
((void) pwd);
|
||||
return( POLARSSL_ERR_PK_FEATURE_UNAVAILABLE );
|
||||
}
|
||||
|
||||
if( decrypted == 0 )
|
||||
return( POLARSSL_ERR_PK_FEATURE_UNAVAILABLE );
|
||||
|
||||
return( pk_parse_key_pkcs8_unencrypted_der( pk, buf, len ) );
|
||||
}
|
||||
|
||||
@ -951,7 +1241,7 @@ int pk_parse_public_key( pk_context *ctx,
|
||||
pem_free( &pem );
|
||||
return( ret );
|
||||
}
|
||||
#endif
|
||||
#endif /* POLARSSL_PEM_PARSE_C */
|
||||
p = (unsigned char *) key;
|
||||
|
||||
ret = pk_parse_subpubkey( &p, p + keylen, ctx );
|
||||
|
||||
Reference in New Issue
Block a user