added missing files for commit [3721]
This commit is contained in:
Martin Willi
parent
9d1c384b4b
commit
372b7ac7e2
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/*
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* Copyright (C) 2008 Martin Willi
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* Copyright (C) 2000-2006 Andreas Steffen
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* $Id$
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*/
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#include "gmp_public_key.h"
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#include <asn1/asn1.h>
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/**
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* ASN.1 definition of a subjectPublicKeyInfo structure
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*/
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static const asn1Object_t pkinfoObjects[] = {
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{ 0, "subjectPublicKeyInfo",ASN1_SEQUENCE, ASN1_NONE }, /* 0 */
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{ 1, "algorithm", ASN1_EOC, ASN1_RAW }, /* 1 */
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{ 1, "subjectPublicKey", ASN1_BIT_STRING, ASN1_NONE }, /* 2 */
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{ 2, "publicKey", ASN1_SEQUENCE, ASN1_RAW }, /* 3 */
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};
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#define PKINFO 0
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#define PKINFO_SUBJECT_PUBLIC_KEY_ALGORITHM 1
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#define PKINFO_SUBJECT_PUBLIC_KEY 2
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#define PKINFO_PUBLIC_KEY 3
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#define PKINFO_ROOF 4
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/**
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* Load a public key from an ASN1 encoded blob
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*/
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static public_key_t *load(chunk_t blob)
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{
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asn1_ctx_t ctx;
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chunk_t object, data = chunk_empty;
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u_int level;
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int objectID = 0;
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key_type_t type = KEY_ANY;
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asn1_init(&ctx, blob, 0, FALSE, FALSE);
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while (objectID < PKINFO_ROOF)
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{
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if (!extract_object(pkinfoObjects, &objectID, &object, &level, &ctx))
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{
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free(blob.ptr);
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return NULL;
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}
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switch (objectID)
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{
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case PKINFO_SUBJECT_PUBLIC_KEY_ALGORITHM:
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switch (parse_algorithmIdentifier(object, level, NULL))
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{
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case OID_RSA_ENCRYPTION:
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type = KEY_RSA;
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break;
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default:
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break;
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}
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break;
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case PKINFO_SUBJECT_PUBLIC_KEY:
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if (ctx.blobs[2].len > 0 && *ctx.blobs[2].ptr == 0x00)
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{ /* skip initial bit string octet defining 0 unused bits */
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ctx.blobs[2].ptr++; ctx.blobs[2].len--;
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}
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break;
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case PKINFO_PUBLIC_KEY:
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data = chunk_clone(object);
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break;
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}
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objectID++;
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}
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free(blob.ptr);
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if (type == KEY_ANY)
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{
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free(data.ptr);
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return NULL;
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}
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return lib->creds->create(lib->creds, CRED_PUBLIC_KEY, type,
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BUILD_BLOB_ASN1_DER, data, BUILD_END);
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}
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typedef struct private_builder_t private_builder_t;
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/**
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* Builder implementation for key loading
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*/
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struct private_builder_t {
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/** implements the builder interface */
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builder_t public;
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/** loaded public key */
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public_key_t *key;
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};
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/**
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* Implementation of builder_t.build
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*/
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static public_key_t *build(private_builder_t *this)
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{
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public_key_t *key = this->key;
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free(this);
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return key;
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}
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/**
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* Implementation of builder_t.add
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*/
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static void add(private_builder_t *this, builder_part_t part, ...)
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{
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va_list args;
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if (this->key)
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{
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DBG1("ignoring surplus build part %N", builder_part_names, part);
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return;
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}
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switch (part)
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{
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case BUILD_BLOB_ASN1_DER:
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{
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va_start(args, part);
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this->key = load(va_arg(args, chunk_t));
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va_end(args);
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break;
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}
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default:
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DBG1("ignoring unsupported build part %N", builder_part_names, part);
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break;
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}
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}
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/**
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* Builder construction function
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*/
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builder_t *gmp_public_key_builder(key_type_t type)
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{
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private_builder_t *this;
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if (type != KEY_ANY)
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{
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return NULL;
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}
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this = malloc_thing(private_builder_t);
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this->key = NULL;
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this->public.add = (void(*)(builder_t *this, builder_part_t part, ...))add;
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this->public.build = (void*(*)(builder_t *this))build;
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return &this->public;
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}
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@ -0,0 +1,36 @@
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/*
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* Copyright (C) 2008 Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* $Id$
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*/
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/**
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* @defgroup gmp_public_key gmp_public_key
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* @{ @ingroup gmp_p
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*/
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#ifndef GMP_PUBLIC_KEY_H_
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#define GMP_PUBLIC_KEY_H_
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#include <credentials/keys/public_key.h>
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/**
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* Create the builder for a generic public key.
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*
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* @param type type of the key, must be KEY_ANY
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* @return builder instance
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*/
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builder_t *gmp_public_key_builder(key_type_t type);
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#endif /*GMP_RSA_PUBLIC_KEY_H_ @}*/
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