5214f4a50a
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@20042 ec53bebd-3082-4978-b11e-865c3cabbd6b
370 lines
9.2 KiB
C
370 lines
9.2 KiB
C
/*
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* Copyright (c) 2003 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "krb5_locl.h"
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RCSID("$Id$");
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/*
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* Glue for MIT API
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_make_checksum(krb5_context context,
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krb5_cksumtype cksumtype,
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const krb5_keyblock *key,
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krb5_keyusage usage,
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const krb5_data *input,
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krb5_checksum *cksum)
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{
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krb5_error_code ret;
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krb5_crypto crypto;
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ret = krb5_crypto_init(context, key, 0, &crypto);
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if (ret)
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return ret;
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ret = krb5_create_checksum(context, crypto, usage, cksumtype,
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input->data, input->length, cksum);
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krb5_crypto_destroy(context, crypto);
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return ret ;
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_verify_checksum(krb5_context context, const krb5_keyblock *key,
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krb5_keyusage usage, const krb5_data *data,
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const krb5_checksum *cksum, krb5_boolean *valid)
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{
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krb5_error_code ret;
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krb5_checksum data_cksum;
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*valid = 0;
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ret = krb5_c_make_checksum(context, cksum->cksumtype,
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key, usage, data, &data_cksum);
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if (ret)
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return ret;
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if (data_cksum.cksumtype == cksum->cksumtype
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&& data_cksum.checksum.length == cksum->checksum.length
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&& memcmp(data_cksum.checksum.data, cksum->checksum.data, cksum->checksum.length) == 0)
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*valid = 1;
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krb5_free_checksum_contents(context, &data_cksum);
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return 0;
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_get_checksum(krb5_context context, const krb5_checksum *cksum,
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krb5_cksumtype *type, krb5_data **data)
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{
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krb5_error_code ret;
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if (type)
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*type = cksum->cksumtype;
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if (data) {
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*data = malloc(sizeof(**data));
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if (*data == NULL)
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return ENOMEM;
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ret = der_copy_octet_string(&cksum->checksum, *data);
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if (ret) {
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free(*data);
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*data = NULL;
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return ret;
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}
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}
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return 0;
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_set_checksum(krb5_context context, krb5_checksum *cksum,
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krb5_cksumtype type, const krb5_data *data)
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{
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cksum->cksumtype = type;
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return der_copy_octet_string(data, &cksum->checksum);
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}
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void KRB5_LIB_FUNCTION
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krb5_free_checksum (krb5_context context, krb5_checksum *cksum)
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{
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krb5_checksum_free(context, cksum);
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free(cksum);
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}
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void KRB5_LIB_FUNCTION
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krb5_free_checksum_contents(krb5_context context, krb5_checksum *cksum)
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{
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krb5_checksum_free(context, cksum);
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memset(cksum, 0, sizeof(*cksum));
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}
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void KRB5_LIB_FUNCTION
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krb5_checksum_free(krb5_context context, krb5_checksum *cksum)
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{
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free_Checksum(cksum);
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}
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krb5_boolean KRB5_LIB_FUNCTION
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krb5_c_valid_enctype (krb5_enctype etype)
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{
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return krb5_enctype_valid(NULL, etype);
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}
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krb5_boolean KRB5_LIB_FUNCTION
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krb5_c_valid_cksumtype(krb5_cksumtype ctype)
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{
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return krb5_cksumtype_valid(NULL, ctype);
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}
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krb5_boolean KRB5_LIB_FUNCTION
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krb5_c_is_coll_proof_cksum(krb5_cksumtype ctype)
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{
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return krb5_checksum_is_collision_proof(NULL, ctype);
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}
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krb5_boolean KRB5_LIB_FUNCTION
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krb5_c_is_keyed_cksum(krb5_cksumtype ctype)
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{
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return krb5_checksum_is_keyed(NULL, ctype);
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_copy_checksum (krb5_context context,
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const krb5_checksum *old,
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krb5_checksum **new)
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{
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*new = malloc(sizeof(**new));
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if (*new == NULL)
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return ENOMEM;
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return copy_Checksum(old, *new);
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_checksum_length (krb5_context context, krb5_cksumtype cksumtype,
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size_t *length)
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{
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return krb5_checksumsize(context, cksumtype, length);
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_block_size(krb5_context context,
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krb5_enctype enctype,
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size_t *blocksize)
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{
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krb5_error_code ret;
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krb5_crypto crypto;
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krb5_keyblock key;
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ret = krb5_generate_random_keyblock(context, enctype, &key);
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if (ret)
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return ret;
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ret = krb5_crypto_init(context, &key, 0, &crypto);
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krb5_free_keyblock_contents(context, &key);
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if (ret)
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return ret;
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ret = krb5_crypto_getblocksize(context, crypto, blocksize);
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krb5_crypto_destroy(context, crypto);
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return ret;
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_decrypt(krb5_context context,
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const krb5_keyblock key,
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krb5_keyusage usage,
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const krb5_data *ivec,
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krb5_enc_data *input,
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krb5_data *output)
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{
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krb5_error_code ret;
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krb5_crypto crypto;
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ret = krb5_crypto_init(context, &key, input->enctype, &crypto);
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if (ret)
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return ret;
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if (ivec) {
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size_t blocksize;
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ret = krb5_crypto_getblocksize(context, crypto, &blocksize);
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if (ret) {
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krb5_crypto_destroy(context, crypto);
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return ret;
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}
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if (blocksize > ivec->length) {
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krb5_crypto_destroy(context, crypto);
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return KRB5_BAD_MSIZE;
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}
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}
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ret = krb5_decrypt_ivec(context, crypto, usage,
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input->ciphertext.data, input->ciphertext.length,
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output,
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ivec ? ivec->data : NULL);
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krb5_crypto_destroy(context, crypto);
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return ret ;
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_encrypt(krb5_context context,
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const krb5_keyblock *key,
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krb5_keyusage usage,
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const krb5_data *ivec,
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const krb5_data *input,
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krb5_enc_data *output)
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{
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krb5_error_code ret;
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krb5_crypto crypto;
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ret = krb5_crypto_init(context, key, 0, &crypto);
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if (ret)
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return ret;
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if (ivec) {
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size_t blocksize;
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ret = krb5_crypto_getblocksize(context, crypto, &blocksize);
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if (ret) {
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krb5_crypto_destroy(context, crypto);
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return ret;
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}
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if (blocksize > ivec->length) {
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krb5_crypto_destroy(context, crypto);
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return KRB5_BAD_MSIZE;
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}
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}
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ret = krb5_encrypt_ivec(context, crypto, usage,
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input->data, input->length,
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&output->ciphertext,
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ivec ? ivec->data : NULL);
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output->kvno = 0;
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krb5_crypto_getenctype(context, crypto, &output->enctype);
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krb5_crypto_destroy(context, crypto);
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return ret ;
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_encrypt_length(krb5_context context,
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krb5_enctype enctype,
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size_t inputlen,
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size_t *length)
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{
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krb5_error_code ret;
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krb5_crypto crypto;
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krb5_keyblock key;
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ret = krb5_generate_random_keyblock(context, enctype, &key);
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if (ret)
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return ret;
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ret = krb5_crypto_init(context, &key, 0, &crypto);
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krb5_free_keyblock_contents(context, &key);
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if (ret)
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return ret;
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*length = krb5_get_wrapped_length(context, crypto, inputlen);
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krb5_crypto_destroy(context, crypto);
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return 0;
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_enctype_compare(krb5_context context,
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krb5_enctype e1,
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krb5_enctype e2,
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krb5_boolean *similar)
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{
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*similar = krb5_enctypes_compatible_keys(context, e1, e2);
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return 0;
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_make_random_key(krb5_context context,
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krb5_enctype enctype,
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krb5_keyblock *random_key)
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{
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return krb5_generate_random_keyblock(context, enctype, random_key);
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_keylengths(krb5_context context,
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krb5_enctype enctype,
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size_t *ilen,
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size_t *keylen)
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{
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krb5_error_code ret;
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ret = krb5_enctype_keybits(context, enctype, ilen);
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if (ret)
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return ret;
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*ilen = (*ilen + 7) / 8;
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return krb5_enctype_keysize(context, enctype, keylen);
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_prf_length(krb5_context context,
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krb5_enctype type,
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size_t *length)
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{
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return krb5_crypto_prf_length(context, type, length);
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_c_prf(krb5_context context,
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const krb5_keyblock *key,
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const krb5_data *input,
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krb5_data *output)
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{
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krb5_crypto crypto;
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krb5_error_code ret;
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ret = krb5_crypto_init(context, key, 0, &crypto);
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if (ret)
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return ret;
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ret = krb5_crypto_prf(context, crypto, input, output);
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krb5_crypto_destroy(context, crypto);
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return ret;
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}
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