PK: use wrappers and function pointers for verify
diff --git a/library/pk_wrap.c b/library/pk_wrap.c
new file mode 100644
index 0000000..fe47b38
--- /dev/null
+++ b/library/pk_wrap.c
@@ -0,0 +1,106 @@
+/*
+ * Public Key abstraction layer: wrapper functions
+ *
+ * Copyright (C) 2006-2013, Brainspark B.V.
+ *
+ * This file is part of PolarSSL (http://www.polarssl.org)
+ * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "polarssl/config.h"
+
+#include "polarssl/pk_wrap.h"
+
+#if defined(POLARSSL_RSA_C)
+#include "polarssl/rsa.h"
+#endif
+
+#if defined(POLARSSL_ECP_C)
+#include "polarssl/ecp.h"
+#endif
+
+#if defined(POLARSSL_ECDSA_C)
+#include "polarssl/ecdsa.h"
+#endif
+
+#if defined(POLARSSL_RSA_C)
+static int rsa_verify_wrap( void *ctx,
+ const unsigned char *hash, const md_info_t *md_info,
+ const unsigned char *sig, size_t sig_len )
+{
+ ((void) sig_len);
+
+ return( rsa_pkcs1_verify( (rsa_context *) ctx,
+ RSA_PUBLIC, md_info->type, 0, hash, sig ) );
+}
+
+const pk_info_t rsa_info = {
+ POLARSSL_PK_RSA,
+ rsa_verify_wrap,
+};
+#endif /* POLARSSL_RSA_C */
+
+#if defined(POLARSSL_ECDSA_C)
+int ecdsa_verify_wrap( void *ctx,
+ const unsigned char *hash, const md_info_t *md_info,
+ const unsigned char *sig, size_t sig_len )
+{
+ return( ecdsa_read_signature( (ecdsa_context *) ctx,
+ hash, md_info->size, sig, sig_len ) );
+}
+
+const pk_info_t ecdsa_info = {
+ POLARSSL_PK_ECDSA,
+ ecdsa_verify_wrap,
+};
+#endif /* POLARSSL_ECDSA_C */
+
+#if defined(POLARSSL_ECP_C)
+static int eckey_verify_wrap( void *ctx,
+ const unsigned char *hash, const md_info_t *md_info,
+ const unsigned char *sig, size_t sig_len )
+{
+#if !defined(POLARSSL_ECDSA_C)
+ ((void) ctx);
+ ((void) hash);
+ ((void) md_info);
+ ((void) sig);
+ ((void) sig_len);
+
+ return( POLARSSL_ERR_PK_TYPE_MISMATCH );
+#else
+ int ret;
+ ecdsa_context ecdsa;
+
+ ecdsa_init( &ecdsa );
+
+ ret = ecdsa_from_keypair( &ecdsa, ctx ) ||
+ ecdsa_verify_wrap( &ecdsa, hash, md_info, sig, sig_len );
+
+ ecdsa_free( &ecdsa );
+
+ return( ret );
+#endif /* POLARSSL_ECDSA_C */
+}
+
+const pk_info_t eckey_info = {
+ POLARSSL_PK_ECKEY,
+ eckey_verify_wrap,
+};
+#endif /* POLARSSL_ECP_C */