From 369b8c3105ffe7ca33a69b760ddf11c9cdc6ba9e Mon Sep 17 00:00:00 2001 From: Richard Basch Date: Fri, 29 Mar 1996 01:21:10 +0000 Subject: [PATCH] Added support for ENCTYPE_DES3_CBC_RAW (gssapi) git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@7732 dc483132-0cff-0310-8789-dd5450dbe970 --- src/lib/crypto/des3_raw.c | 104 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 src/lib/crypto/des3_raw.c diff --git a/src/lib/crypto/des3_raw.c b/src/lib/crypto/des3_raw.c new file mode 100644 index 000000000..aa7a4c9fc --- /dev/null +++ b/src/lib/crypto/des3_raw.c @@ -0,0 +1,104 @@ +/* + * lib/crypto/des3_raw.c + * + * Copyright 1996 by the Massachusetts Institute of Technology. + * All Rights Reserved. + * + * Export of this software from the United States of America may + * require a specific license from the United States Government. + * It is the responsibility of any person or organization contemplating + * export to obtain such a license before exporting. + * + * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and + * distribute this software and its documentation for any purpose and + * without fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright notice and + * this permission notice appear in supporting documentation, and that + * the name of M.I.T. not be used in advertising or publicity pertaining + * to distribution of the software without specific, written prior + * permission. M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" without express + * or implied warranty. + */ + +#include "k5-int.h" +#include "des_int.h" + +krb5_error_code mit_des3_raw_encrypt_func + PROTOTYPE(( krb5_const_pointer, krb5_pointer, const size_t, + krb5_encrypt_block *, krb5_pointer )); + +krb5_error_code mit_des3_raw_decrypt_func + PROTOTYPE(( krb5_const_pointer, krb5_pointer, const size_t, + krb5_encrypt_block *, krb5_pointer )); + +static krb5_cryptosystem_entry mit_des3_raw_cryptosystem_entry = { + 0, + mit_des3_raw_encrypt_func, + mit_des3_raw_decrypt_func, + mit_des3_process_key, + mit_des_finish_key, + mit_des3_string_to_key, + mit_des_init_random_key, + mit_des_finish_random_key, + mit_des3_random_key, + sizeof(mit_des_cblock), + 0, + sizeof(mit_des3_cblock), + ENCTYPE_DES3_CBC_RAW + }; + +krb5_cs_table_entry krb5_des3_raw_cst_entry = { + 0, + &mit_des3_raw_cryptosystem_entry, + 0 + }; + +krb5_error_code +mit_des3_raw_decrypt_func(in, out, size, key, ivec) + krb5_const_pointer in; + krb5_pointer out; + const size_t size; + krb5_encrypt_block * key; + krb5_pointer ivec; +{ + return (mit_des3_cbc_encrypt((const mit_des_cblock *) in, + out, + size, + (struct mit_des_ks_struct *)key->priv, + ((struct mit_des_ks_struct *)key->priv) + 1, + ((struct mit_des_ks_struct *)key->priv) + 2, + ivec ? ivec : (krb5_pointer)key->key->contents, + MIT_DES_DECRYPT)); +} + +krb5_error_code +mit_des3_raw_encrypt_func(in, out, size, key, ivec) + krb5_const_pointer in; + krb5_pointer out; + const size_t size; + krb5_encrypt_block * key; + krb5_pointer ivec; +{ + int sumsize; + + /* round up to des block size */ + + sumsize = krb5_roundup(size, sizeof(mit_des_cblock)); + + /* assemble crypto input into the output area, then encrypt in place. */ + + memset((char *)out, 0, sumsize); + memcpy((char *)out, (char *)in, size); + + /* We depend here on the ability of this DES implementation to + encrypt plaintext to ciphertext in-place. */ + return (mit_des3_cbc_encrypt(out, + out, + sumsize, + (struct mit_des_ks_struct *)key->priv, + ((struct mit_des_ks_struct *)key->priv) + 1, + ((struct mit_des_ks_struct *)key->priv) + 2, + ivec ? ivec : (krb5_pointer)key->key->contents, + MIT_DES_ENCRYPT)); +} -- 2.26.2