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Moved DHM parsing from X509 module to DHM module

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This commit is contained in:
Paul Bakker 2013-09-15 17:43:54 +02:00
parent 3e41fe8938
commit 40ce79f1e6
9 changed files with 241 additions and 155 deletions
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129
library/x509parse.c
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@ -2219,113 +2219,6 @@ int x509parse_public_key_rsa( rsa_context *rsa,
}
#endif /* POLARSSL_RSA_C */
#if defined(POLARSSL_DHM_C)
/*
* Parse DHM parameters
*/
int x509parse_dhm( dhm_context *dhm, const unsigned char *dhmin, size_t dhminlen )
{
int ret;
size_t len;
unsigned char *p, *end;
#if defined(POLARSSL_PEM_C)
pem_context pem;
pem_init( &pem );
ret = pem_read_buffer( &pem,
"-----BEGIN DH PARAMETERS-----",
"-----END DH PARAMETERS-----",
dhmin, NULL, 0, &dhminlen );
if( ret == 0 )
{
/*
* Was PEM encoded
*/
dhminlen = pem.buflen;
}
else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
{
pem_free( &pem );
return( ret );
}
p = ( ret == 0 ) ? pem.buf : (unsigned char *) dhmin;
#else
p = (unsigned char *) dhmin;
#endif
end = p + dhminlen;
memset( dhm, 0, sizeof( dhm_context ) );
/*
* DHParams ::= SEQUENCE {
* prime INTEGER, -- P
* generator INTEGER, -- g
* }
*/
if( ( ret = asn1_get_tag( &p, end, &len,
ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 )
{
#if defined(POLARSSL_PEM_C)
pem_free( &pem );
#endif
return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + ret );
}
end = p + len;
if( ( ret = asn1_get_mpi( &p, end, &dhm->P ) ) != 0 ||
( ret = asn1_get_mpi( &p, end, &dhm->G ) ) != 0 )
{
#if defined(POLARSSL_PEM_C)
pem_free( &pem );
#endif
dhm_free( dhm );
return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT + ret );
}
if( p != end )
{
#if defined(POLARSSL_PEM_C)
pem_free( &pem );
#endif
dhm_free( dhm );
return( POLARSSL_ERR_X509_CERT_INVALID_FORMAT +
POLARSSL_ERR_ASN1_LENGTH_MISMATCH );
}
#if defined(POLARSSL_PEM_C)
pem_free( &pem );
#endif
return( 0 );
}
#if defined(POLARSSL_FS_IO)
/*
* Load and parse DHM parameters
*/
int x509parse_dhmfile( dhm_context *dhm, const char *path )
{
int ret;
size_t n;
unsigned char *buf;
if ( ( ret = load_file( path, &buf, &n ) ) != 0 )
return( ret );
ret = x509parse_dhm( dhm, buf, n );
memset( buf, 0, n + 1 );
polarssl_free( buf );
return( ret );
}
#endif /* POLARSSL_FS_IO */
#endif /* POLARSSL_DHM_C */
#if defined _MSC_VER && !defined snprintf
#include <stdarg.h>
@ -3418,9 +3311,6 @@ int x509_self_test( int verbose )
x509_cert cacert;
x509_cert clicert;
pk_context pkey;
#if defined(POLARSSL_DHM_C)
dhm_context dhm;
#endif
if( verbose != 0 )
printf( " X.509 certificate load: " );
@ -3483,29 +3373,12 @@ int x509_self_test( int verbose )
return( ret );
}
#if defined(POLARSSL_DHM_C)
if( verbose != 0 )
printf( "passed\n X.509 DHM parameter load: " );
if( ( ret = x509parse_dhm( &dhm, (const unsigned char *) test_dhm_params,
strlen( test_dhm_params ) ) ) != 0 )
{
if( verbose != 0 )
printf( "failed\n" );
return( ret );
}
if( verbose != 0 )
printf( "passed\n\n" );
#endif
printf( "passed\n\n");
x509_free( &cacert );
x509_free( &clicert );
pk_free( &pkey );
#if defined(POLARSSL_DHM_C)
dhm_free( &dhm );
#endif
return( 0 );
#else