+++ /dev/null
-thisconfigdir=../../../..
-myfulldir=lib/crypto/krb/enc_provider
-mydir=lib/crypto/krb/enc_provider
-BUILDTOP=$(REL)..$(S)..$(S)..$(S)..
-LOCALINCLUDES = -I$(srcdir)/../../@CRYPTO_IMPL@/des -I$(srcdir)/../../@CRYPTO_IMPL@/arcfour \
- -I$(srcdir)/../../@CRYPTO_IMPL@/aes -I$(srcdir)/.. -I$(srcdir)/../../@CRYPTO_IMPL@
-DEFS=
-
-##DOS##BUILDTOP = ..\..\..\..
-##DOS##PREFIXDIR=enc_provider
-##DOS##OBJFILE=..\$(OUTPRE)enc_prov.lst
-
-PROG_LIBPATH=-L$(TOPLIBD)
-PROG_RPATH=$(KRB5_LIBDIR)
-
-STLIBOBJS= des.o des3.o rc4.o aes.o
-
-OBJS= \
- $(OUTPRE)des.$(OBJEXT) \
- $(OUTPRE)des3.$(OBJEXT) \
- $(OUTPRE)aes.$(OBJEXT) \
- $(OUTPRE)rc4.$(OBJEXT)
-
-SRCS= \
- $(srcdir)/des.c \
- $(srcdir)/des3.c \
- $(srcdir)/aes.c \
- $(srcdir)/rc4.c
-
-##DOS##LIBOBJS = $(OBJS)
-
-all-unix:: all-libobjs
-
-includes:: depend
-
-depend:: $(SRCS)
-
-clean-unix:: clean-libobjs
-
-@libobj_frag@
-
+++ /dev/null
-/*
- * lib/crypto/enc_provider/aes.c
- *
- * Copyright (C) 2003, 2007, 2008 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. Furthermore if you modify this software you must label
- * your software as modified software and not distribute it in such a
- * fashion that it might be confused with the original M.I.T. software.
- * 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 "enc_provider.h"
-#include "aes.h"
-#include "../aead.h"
-
-#if 0
-aes_rval aes_blk_len(unsigned int blen, aes_ctx cx[1]);
-aes_rval aes_enc_key(const unsigned char in_key[], unsigned int klen, aes_ctx cx[1]);
-aes_rval aes_enc_blk(const unsigned char in_blk[], unsigned char out_blk[], const aes_ctx cx[1]);
-aes_rval aes_dec_key(const unsigned char in_key[], unsigned int klen, aes_ctx cx[1]);
-aes_rval aes_dec_blk(const unsigned char in_blk[], unsigned char out_blk[], const aes_ctx cx[1]);
-#endif
-
-#define CHECK_SIZES 0
-
-#if 0
-static void printd (const char *descr, krb5_data *d) {
- int i, j;
- const int r = 16;
-
- printf("%s:", descr);
-
- for (i = 0; i < d->length; i += r) {
- printf("\n %04x: ", i);
- for (j = i; j < i + r && j < d->length; j++)
- printf(" %02x", 0xff & d->data[j]);
-#ifdef SHOW_TEXT
- for (; j < i + r; j++)
- printf(" ");
- printf(" ");
- for (j = i; j < i + r && j < d->length; j++) {
- int c = 0xff & d->data[j];
- printf("%c", isprint(c) ? c : '.');
- }
-#endif
- }
- printf("\n");
-}
-#endif
-
-static inline void enc(char *out, const char *in, aes_ctx *ctx)
-{
- if (aes_enc_blk((const unsigned char *)in, (unsigned char *)out, ctx)
- != aes_good)
- abort();
-}
-static inline void dec(char *out, const char *in, aes_ctx *ctx)
-{
- if (aes_dec_blk((const unsigned char *)in, (unsigned char *)out, ctx)
- != aes_good)
- abort();
-}
-
-static void xorblock(char *out, const char *in)
-{
- int z;
- for (z = 0; z < BLOCK_SIZE; z++)
- out[z] ^= in[z];
-}
-
-krb5_error_code
-krb5int_aes_encrypt(const krb5_keyblock *key, const krb5_data *ivec,
- const krb5_data *input, krb5_data *output)
-{
- aes_ctx ctx;
- char tmp[BLOCK_SIZE], tmp2[BLOCK_SIZE], tmp3[BLOCK_SIZE];
- int nblocks = 0, blockno;
-
-/* CHECK_SIZES; */
-
- if (aes_enc_key(key->contents, key->length, &ctx) != aes_good)
- abort();
-
- if (ivec)
- memcpy(tmp, ivec->data, BLOCK_SIZE);
- else
- memset(tmp, 0, BLOCK_SIZE);
-
- nblocks = (input->length + BLOCK_SIZE - 1) / BLOCK_SIZE;
-
- if (nblocks == 1) {
- /* XXX Used for DK function. */
- enc(output->data, input->data, &ctx);
- } else {
- unsigned int nleft;
-
- for (blockno = 0; blockno < nblocks - 2; blockno++) {
- xorblock(tmp, input->data + blockno * BLOCK_SIZE);
- enc(tmp2, tmp, &ctx);
- memcpy(output->data + blockno * BLOCK_SIZE, tmp2, BLOCK_SIZE);
-
- /* Set up for next block. */
- memcpy(tmp, tmp2, BLOCK_SIZE);
- }
- /* Do final CTS step for last two blocks (the second of which
- may or may not be incomplete). */
- xorblock(tmp, input->data + (nblocks - 2) * BLOCK_SIZE);
- enc(tmp2, tmp, &ctx);
- nleft = input->length - (nblocks - 1) * BLOCK_SIZE;
- memcpy(output->data + (nblocks - 1) * BLOCK_SIZE, tmp2, nleft);
- memcpy(tmp, tmp2, BLOCK_SIZE);
-
- memset(tmp3, 0, sizeof(tmp3));
- memcpy(tmp3, input->data + (nblocks - 1) * BLOCK_SIZE, nleft);
- xorblock(tmp, tmp3);
- enc(tmp2, tmp, &ctx);
- memcpy(output->data + (nblocks - 2) * BLOCK_SIZE, tmp2, BLOCK_SIZE);
- if (ivec)
- memcpy(ivec->data, tmp2, BLOCK_SIZE);
- }
-
- return 0;
-}
-
-krb5_error_code
-krb5int_aes_decrypt(const krb5_keyblock *key, const krb5_data *ivec,
- const krb5_data *input, krb5_data *output)
-{
- aes_ctx ctx;
- char tmp[BLOCK_SIZE], tmp2[BLOCK_SIZE], tmp3[BLOCK_SIZE];
- int nblocks = 0, blockno;
-
- CHECK_SIZES;
-
- if (aes_dec_key(key->contents, key->length, &ctx) != aes_good)
- abort();
-
- if (ivec)
- memcpy(tmp, ivec->data, BLOCK_SIZE);
- else
- memset(tmp, 0, BLOCK_SIZE);
-
- nblocks = (input->length + BLOCK_SIZE - 1) / BLOCK_SIZE;
-
- if (nblocks == 1) {
- if (input->length < BLOCK_SIZE)
- abort();
- dec(output->data, input->data, &ctx);
- } else {
-
- for (blockno = 0; blockno < nblocks - 2; blockno++) {
- dec(tmp2, input->data + blockno * BLOCK_SIZE, &ctx);
- xorblock(tmp2, tmp);
- memcpy(output->data + blockno * BLOCK_SIZE, tmp2, BLOCK_SIZE);
- memcpy(tmp, input->data + blockno * BLOCK_SIZE, BLOCK_SIZE);
- }
- /* Do last two blocks, the second of which (next-to-last block
- of plaintext) may be incomplete. */
- dec(tmp2, input->data + (nblocks - 2) * BLOCK_SIZE, &ctx);
- /* Set tmp3 to last ciphertext block, padded. */
- memset(tmp3, 0, sizeof(tmp3));
- memcpy(tmp3, input->data + (nblocks - 1) * BLOCK_SIZE,
- input->length - (nblocks - 1) * BLOCK_SIZE);
- /* Set tmp2 to last (possibly partial) plaintext block, and
- save it. */
- xorblock(tmp2, tmp3);
- memcpy(output->data + (nblocks - 1) * BLOCK_SIZE, tmp2,
- input->length - (nblocks - 1) * BLOCK_SIZE);
- /* Maybe keep the trailing part, and copy in the last
- ciphertext block. */
- memcpy(tmp2, tmp3, input->length - (nblocks - 1) * BLOCK_SIZE);
- /* Decrypt, to get next to last plaintext block xor previous
- ciphertext. */
- dec(tmp3, tmp2, &ctx);
- xorblock(tmp3, tmp);
- memcpy(output->data + (nblocks - 2) * BLOCK_SIZE, tmp3, BLOCK_SIZE);
- if (ivec)
- memcpy(ivec->data, input->data + (nblocks - 2) * BLOCK_SIZE,
- BLOCK_SIZE);
- }
-
- return 0;
-}
-
-static krb5_error_code
-krb5int_aes_encrypt_iov(const krb5_keyblock *key,
- const krb5_data *ivec,
- krb5_crypto_iov *data,
- size_t num_data)
-{
- aes_ctx ctx;
- char tmp[BLOCK_SIZE], tmp2[BLOCK_SIZE];
- int nblocks = 0, blockno;
- size_t input_length, i;
-
- if (aes_enc_key(key->contents, key->length, &ctx) != aes_good)
- abort();
-
- if (ivec != NULL)
- memcpy(tmp, ivec->data, BLOCK_SIZE);
- else
- memset(tmp, 0, BLOCK_SIZE);
-
- for (i = 0, input_length = 0; i < num_data; i++) {
- krb5_crypto_iov *iov = &data[i];
-
- if (ENCRYPT_IOV(iov))
- input_length += iov->data.length;
- }
-
- nblocks = (input_length + BLOCK_SIZE - 1) / BLOCK_SIZE;
-
- assert(nblocks > 1);
-
- {
- char blockN2[BLOCK_SIZE]; /* second last */
- char blockN1[BLOCK_SIZE]; /* last block */
- struct iov_block_state input_pos, output_pos;
-
- IOV_BLOCK_STATE_INIT(&input_pos);
- IOV_BLOCK_STATE_INIT(&output_pos);
-
- for (blockno = 0; blockno < nblocks - 2; blockno++) {
- char blockN[BLOCK_SIZE];
-
- krb5int_c_iov_get_block((unsigned char *)blockN, BLOCK_SIZE, data, num_data, &input_pos);
- xorblock(tmp, blockN);
- enc(tmp2, tmp, &ctx);
- krb5int_c_iov_put_block(data, num_data, (unsigned char *)tmp2, BLOCK_SIZE, &output_pos);
-
- /* Set up for next block. */
- memcpy(tmp, tmp2, BLOCK_SIZE);
- }
-
- /* Do final CTS step for last two blocks (the second of which
- may or may not be incomplete). */
-
- /* First, get the last two blocks */
- memset(blockN1, 0, sizeof(blockN1)); /* pad last block with zeros */
- krb5int_c_iov_get_block((unsigned char *)blockN2, BLOCK_SIZE, data, num_data, &input_pos);
- krb5int_c_iov_get_block((unsigned char *)blockN1, BLOCK_SIZE, data, num_data, &input_pos);
-
- /* Encrypt second last block */
- xorblock(tmp, blockN2);
- enc(tmp2, tmp, &ctx);
- memcpy(blockN2, tmp2, BLOCK_SIZE); /* blockN2 now contains first block */
- memcpy(tmp, tmp2, BLOCK_SIZE);
-
- /* Encrypt last block */
- xorblock(tmp, blockN1);
- enc(tmp2, tmp, &ctx);
- memcpy(blockN1, tmp2, BLOCK_SIZE);
-
- /* Put the last two blocks back into the iovec (reverse order) */
- krb5int_c_iov_put_block(data, num_data, (unsigned char *)blockN1, BLOCK_SIZE, &output_pos);
- krb5int_c_iov_put_block(data, num_data, (unsigned char *)blockN2, BLOCK_SIZE, &output_pos);
-
- if (ivec != NULL)
- memcpy(ivec->data, blockN1, BLOCK_SIZE);
- }
-
- return 0;
-}
-
-static krb5_error_code
-krb5int_aes_decrypt_iov(const krb5_keyblock *key,
- const krb5_data *ivec,
- krb5_crypto_iov *data,
- size_t num_data)
-{
- aes_ctx ctx;
- char tmp[BLOCK_SIZE], tmp2[BLOCK_SIZE], tmp3[BLOCK_SIZE];
- int nblocks = 0, blockno;
- unsigned int i;
- size_t input_length;
-
- CHECK_SIZES;
-
- if (aes_dec_key(key->contents, key->length, &ctx) != aes_good)
- abort();
-
- if (ivec != NULL)
- memcpy(tmp, ivec->data, BLOCK_SIZE);
- else
- memset(tmp, 0, BLOCK_SIZE);
-
- for (i = 0, input_length = 0; i < num_data; i++) {
- krb5_crypto_iov *iov = &data[i];
-
- if (ENCRYPT_IOV(iov))
- input_length += iov->data.length;
- }
-
- nblocks = (input_length + BLOCK_SIZE - 1) / BLOCK_SIZE;
-
- assert(nblocks > 1);
-
- {
- char blockN2[BLOCK_SIZE]; /* second last */
- char blockN1[BLOCK_SIZE]; /* last block */
- struct iov_block_state input_pos, output_pos;
-
- IOV_BLOCK_STATE_INIT(&input_pos);
- IOV_BLOCK_STATE_INIT(&output_pos);
-
- for (blockno = 0; blockno < nblocks - 2; blockno++) {
- char blockN[BLOCK_SIZE];
-
- krb5int_c_iov_get_block((unsigned char *)blockN, BLOCK_SIZE, data, num_data, &input_pos);
- dec(tmp2, blockN, &ctx);
- xorblock(tmp2, tmp);
- krb5int_c_iov_put_block(data, num_data, (unsigned char *)tmp2, BLOCK_SIZE, &output_pos);
- memcpy(tmp, blockN, BLOCK_SIZE);
- }
-
- /* Do last two blocks, the second of which (next-to-last block
- of plaintext) may be incomplete. */
-
- /* First, get the last two encrypted blocks */
- memset(blockN1, 0, sizeof(blockN1)); /* pad last block with zeros */
- krb5int_c_iov_get_block((unsigned char *)blockN2, BLOCK_SIZE, data, num_data, &input_pos);
- krb5int_c_iov_get_block((unsigned char *)blockN1, BLOCK_SIZE, data, num_data, &input_pos);
-
- /* Decrypt second last block */
- dec(tmp2, blockN2, &ctx);
- /* Set tmp2 to last (possibly partial) plaintext block, and
- save it. */
- xorblock(tmp2, blockN1);
- memcpy(blockN2, tmp2, BLOCK_SIZE);
-
- /* Maybe keep the trailing part, and copy in the last
- ciphertext block. */
- input_length %= BLOCK_SIZE;
- memcpy(tmp2, blockN1, input_length ? input_length : BLOCK_SIZE);
- dec(tmp3, tmp2, &ctx);
- xorblock(tmp3, tmp);
- /* Copy out ivec first before we clobber blockN1 with plaintext */
- if (ivec != NULL)
- memcpy(ivec->data, blockN1, BLOCK_SIZE);
- memcpy(blockN1, tmp3, BLOCK_SIZE);
-
- /* Put the last two blocks back into the iovec */
- krb5int_c_iov_put_block(data, num_data, (unsigned char *)blockN1, BLOCK_SIZE, &output_pos);
- krb5int_c_iov_put_block(data, num_data, (unsigned char *)blockN2, BLOCK_SIZE, &output_pos);
- }
-
- return 0;
-}
-
-static krb5_error_code
-k5_aes_make_key(const krb5_data *randombits, krb5_keyblock *key)
-{
- if (key->length != 16 && key->length != 32)
- return(KRB5_BAD_KEYSIZE);
- if (randombits->length != key->length)
- return(KRB5_CRYPTO_INTERNAL);
-
- key->magic = KV5M_KEYBLOCK;
-
- memcpy(key->contents, randombits->data, randombits->length);
- return(0);
-}
-
-static krb5_error_code
-krb5int_aes_init_state (const krb5_keyblock *key, krb5_keyusage usage,
- krb5_data *state)
-{
- state->length = 16;
- state->data = (void *) malloc(16);
- if (state->data == NULL)
- return ENOMEM;
- memset(state->data, 0, state->length);
- return 0;
-}
-
-const struct krb5_enc_provider krb5int_enc_aes128 = {
- 16,
- 16, 16,
- krb5int_aes_encrypt,
- krb5int_aes_decrypt,
- k5_aes_make_key,
- krb5int_aes_init_state,
- krb5int_default_free_state,
- krb5int_aes_encrypt_iov,
- krb5int_aes_decrypt_iov
-};
-
-const struct krb5_enc_provider krb5int_enc_aes256 = {
- 16,
- 32, 32,
- krb5int_aes_encrypt,
- krb5int_aes_decrypt,
- k5_aes_make_key,
- krb5int_aes_init_state,
- krb5int_default_free_state,
- krb5int_aes_encrypt_iov,
- krb5int_aes_decrypt_iov
-};
+++ /dev/null
-#
-# Generated makefile dependencies follow.
-#
-des.so des.po $(OUTPRE)des.$(OBJEXT): $(BUILDTOP)/include/autoconf.h \
- $(BUILDTOP)/include/krb5/krb5.h $(BUILDTOP)/include/osconf.h \
- $(BUILDTOP)/include/profile.h $(COM_ERR_DEPS) $(SRCTOP)/include/k5-buf.h \
- $(SRCTOP)/include/k5-err.h $(SRCTOP)/include/k5-gmt_mktime.h \
- $(SRCTOP)/include/k5-int-pkinit.h $(SRCTOP)/include/k5-int.h \
- $(SRCTOP)/include/k5-platform.h $(SRCTOP)/include/k5-plugin.h \
- $(SRCTOP)/include/k5-thread.h $(SRCTOP)/include/krb5.h \
- $(SRCTOP)/include/krb5/locate_plugin.h $(SRCTOP)/include/krb5/preauth_plugin.h \
- $(SRCTOP)/include/port-sockets.h $(SRCTOP)/include/socket-utils.h \
- $(srcdir)/../../builtin/des/des_int.h $(srcdir)/../aead.h \
- $(srcdir)/../cksumtypes.h des.c enc_provider.h
-des3.so des3.po $(OUTPRE)des3.$(OBJEXT): $(BUILDTOP)/include/autoconf.h \
- $(BUILDTOP)/include/krb5/krb5.h $(BUILDTOP)/include/osconf.h \
- $(BUILDTOP)/include/profile.h $(COM_ERR_DEPS) $(SRCTOP)/include/k5-buf.h \
- $(SRCTOP)/include/k5-err.h $(SRCTOP)/include/k5-gmt_mktime.h \
- $(SRCTOP)/include/k5-int-pkinit.h $(SRCTOP)/include/k5-int.h \
- $(SRCTOP)/include/k5-platform.h $(SRCTOP)/include/k5-plugin.h \
- $(SRCTOP)/include/k5-thread.h $(SRCTOP)/include/krb5.h \
- $(SRCTOP)/include/krb5/locate_plugin.h $(SRCTOP)/include/krb5/preauth_plugin.h \
- $(SRCTOP)/include/port-sockets.h $(SRCTOP)/include/socket-utils.h \
- $(srcdir)/../../builtin/des/des_int.h $(srcdir)/../aead.h \
- $(srcdir)/../cksumtypes.h des3.c
-aes.so aes.po $(OUTPRE)aes.$(OBJEXT): $(BUILDTOP)/include/autoconf.h \
- $(BUILDTOP)/include/krb5/krb5.h $(BUILDTOP)/include/osconf.h \
- $(BUILDTOP)/include/profile.h $(COM_ERR_DEPS) $(SRCTOP)/include/k5-buf.h \
- $(SRCTOP)/include/k5-err.h $(SRCTOP)/include/k5-gmt_mktime.h \
- $(SRCTOP)/include/k5-int-pkinit.h $(SRCTOP)/include/k5-int.h \
- $(SRCTOP)/include/k5-platform.h $(SRCTOP)/include/k5-plugin.h \
- $(SRCTOP)/include/k5-thread.h $(SRCTOP)/include/krb5.h \
- $(SRCTOP)/include/krb5/locate_plugin.h $(SRCTOP)/include/krb5/preauth_plugin.h \
- $(SRCTOP)/include/port-sockets.h $(SRCTOP)/include/socket-utils.h \
- $(srcdir)/../../builtin/aes/aes.h $(srcdir)/../../builtin/aes/uitypes.h \
- $(srcdir)/../aead.h $(srcdir)/../cksumtypes.h aes.c \
- enc_provider.h
-rc4.so rc4.po $(OUTPRE)rc4.$(OBJEXT): $(BUILDTOP)/include/autoconf.h \
- $(BUILDTOP)/include/krb5/krb5.h $(BUILDTOP)/include/osconf.h \
- $(BUILDTOP)/include/profile.h $(COM_ERR_DEPS) $(SRCTOP)/include/k5-buf.h \
- $(SRCTOP)/include/k5-err.h $(SRCTOP)/include/k5-gmt_mktime.h \
- $(SRCTOP)/include/k5-int-pkinit.h $(SRCTOP)/include/k5-int.h \
- $(SRCTOP)/include/k5-platform.h $(SRCTOP)/include/k5-plugin.h \
- $(SRCTOP)/include/k5-thread.h $(SRCTOP)/include/krb5.h \
- $(SRCTOP)/include/krb5/locate_plugin.h $(SRCTOP)/include/krb5/preauth_plugin.h \
- $(SRCTOP)/include/port-sockets.h $(SRCTOP)/include/socket-utils.h \
- $(srcdir)/../../builtin/arcfour/arcfour-int.h $(srcdir)/../../builtin/arcfour/arcfour.h \
- $(srcdir)/../aead.h $(srcdir)/../cksumtypes.h enc_provider.h \
- rc4.c
+++ /dev/null
-/*
- * Copyright (C) 1998 by the FundsXpress, INC.
- *
- * 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 FundsXpress. not be used in advertising or publicity pertaining
- * to distribution of the software without specific, written prior
- * permission. FundsXpress makes no representations about the suitability of
- * this software for any purpose. It is provided "as is" without express
- * or implied warranty.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-#include "k5-int.h"
-#include "des_int.h"
-#include "enc_provider.h"
-#include "aead.h"
-
-static krb5_error_code
-k5_des_docrypt(const krb5_keyblock *key, const krb5_data *ivec,
- const krb5_data *input, krb5_data *output, int enc)
-{
- mit_des_key_schedule schedule;
-
- /* key->enctype was checked by the caller */
-
- if (key->length != 8)
- return(KRB5_BAD_KEYSIZE);
- if ((input->length%8) != 0)
- return(KRB5_BAD_MSIZE);
- if (ivec && (ivec->length != 8))
- return(KRB5_BAD_MSIZE);
- if (input->length != output->length)
- return(KRB5_BAD_MSIZE);
-
- switch (mit_des_key_sched(key->contents, schedule)) {
- case -1:
- return(KRB5DES_BAD_KEYPAR);
- case -2:
- return(KRB5DES_WEAK_KEY);
- }
-
- /* this has a return value, but the code always returns zero */
-
- mit_des_cbc_encrypt((krb5_pointer) input->data,
- (krb5_pointer) output->data, input->length,
- schedule,
- (ivec
- ? (const unsigned char *) ivec->data
- : (const unsigned char *) mit_des_zeroblock),
- enc);
-
- memset(schedule, 0, sizeof(schedule));
-
- return(0);
-}
-
-static krb5_error_code
-k5_des_encrypt(const krb5_keyblock *key, const krb5_data *ivec,
- const krb5_data *input, krb5_data *output)
-{
- return(k5_des_docrypt(key, ivec, input, output, 1));
-}
-
-static krb5_error_code
-k5_des_decrypt(const krb5_keyblock *key, const krb5_data *ivec,
- const krb5_data *input, krb5_data *output)
-{
- return(k5_des_docrypt(key, ivec, input, output, 0));
-}
-
-static krb5_error_code
-k5_des_make_key(const krb5_data *randombits, krb5_keyblock *key)
-{
- if (key->length != 8)
- return(KRB5_BAD_KEYSIZE);
- if (randombits->length != 7)
- return(KRB5_CRYPTO_INTERNAL);
-
- key->magic = KV5M_KEYBLOCK;
- key->length = 8;
-
- /* take the seven bytes, move them around into the top 7 bits of the
- 8 key bytes, then compute the parity bits */
-
- memcpy(key->contents, randombits->data, randombits->length);
- key->contents[7] = (((key->contents[0]&1)<<1) | ((key->contents[1]&1)<<2) |
- ((key->contents[2]&1)<<3) | ((key->contents[3]&1)<<4) |
- ((key->contents[4]&1)<<5) | ((key->contents[5]&1)<<6) |
- ((key->contents[6]&1)<<7));
-
- mit_des_fixup_key_parity(key->contents);
-
- return(0);
-}
-
-static krb5_error_code
-k5_des_docrypt_iov(const krb5_keyblock *key, const krb5_data *ivec,
- krb5_crypto_iov *data, size_t num_data, int enc)
-{
- mit_des_key_schedule schedule;
- size_t input_length = 0;
- unsigned int i;
-
- /* key->enctype was checked by the caller */
-
- if (key->length != 8)
- return(KRB5_BAD_KEYSIZE);
-
- for (i = 0; i < num_data; i++) {
- const krb5_crypto_iov *iov = &data[i];
-
- if (ENCRYPT_DATA_IOV(iov))
- input_length += iov->data.length;
- }
-
- if ((input_length % 8) != 0)
- return(KRB5_BAD_MSIZE);
- if (ivec && (ivec->length != 8))
- return(KRB5_BAD_MSIZE);
-
- switch (mit_des_key_sched(key->contents, schedule)) {
- case -1:
- return(KRB5DES_BAD_KEYPAR);
- case -2:
- return(KRB5DES_WEAK_KEY);
- }
-
- /* this has a return value, but the code always returns zero */
- if (enc)
- krb5int_des_cbc_encrypt_iov(data, num_data, schedule, ivec ? ivec->data : NULL);
- else
- krb5int_des_cbc_decrypt_iov(data, num_data, schedule, ivec ? ivec->data : NULL);
-
- memset(schedule, 0, sizeof(schedule));
-
- return(0);
-}
-
-static krb5_error_code
-k5_des_encrypt_iov(const krb5_keyblock *key,
- const krb5_data *ivec,
- krb5_crypto_iov *data,
- size_t num_data)
-{
- return k5_des_docrypt_iov(key, ivec, data, num_data, 1);
-}
-
-static krb5_error_code
-k5_des_decrypt_iov(const krb5_keyblock *key,
- const krb5_data *ivec,
- krb5_crypto_iov *data,
- size_t num_data)
-{
- return k5_des_docrypt_iov(key, ivec, data, num_data, 0);
-}
-
-const struct krb5_enc_provider krb5int_enc_des = {
- 8,
- 7, 8,
- k5_des_encrypt,
- k5_des_decrypt,
- k5_des_make_key,
- krb5int_des_init_state,
- krb5int_default_free_state,
- k5_des_encrypt_iov,
- k5_des_decrypt_iov
-};
+++ /dev/null
-/*
- * Copyright (C) 1998 by the FundsXpress, INC.
- *
- * 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 FundsXpress. not be used in advertising or publicity pertaining
- * to distribution of the software without specific, written prior
- * permission. FundsXpress makes no representations about the suitability of
- * this software for any purpose. It is provided "as is" without express
- * or implied warranty.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-#include "k5-int.h"
-#include "des_int.h"
-#include "../aead.h"
-
-static krb5_error_code
-validate_and_schedule(const krb5_keyblock *key, const krb5_data *ivec,
- const krb5_data *input, const krb5_data *output,
- mit_des3_key_schedule *schedule)
-{
- /* key->enctype was checked by the caller */
-
- if (key->length != 24)
- return(KRB5_BAD_KEYSIZE);
- if ((input->length%8) != 0)
- return(KRB5_BAD_MSIZE);
- if (ivec && (ivec->length != 8))
- return(KRB5_BAD_MSIZE);
- if (input->length != output->length)
- return(KRB5_BAD_MSIZE);
-
- switch (mit_des3_key_sched(*(mit_des3_cblock *)key->contents,
- *schedule)) {
- case -1:
- return(KRB5DES_BAD_KEYPAR);
- case -2:
- return(KRB5DES_WEAK_KEY);
- }
- return 0;
-}
-
-static krb5_error_code
-validate_and_schedule_iov(const krb5_keyblock *key, const krb5_data *ivec,
- const krb5_crypto_iov *data, size_t num_data,
- mit_des3_key_schedule *schedule)
-{
- size_t i, input_length;
-
- for (i = 0, input_length = 0; i < num_data; i++) {
- const krb5_crypto_iov *iov = &data[i];
-
- if (ENCRYPT_IOV(iov))
- input_length += iov->data.length;
- }
-
- if (key->length != 24)
- return(KRB5_BAD_KEYSIZE);
- if ((input_length%8) != 0)
- return(KRB5_BAD_MSIZE);
- if (ivec && (ivec->length != 8))
- return(KRB5_BAD_MSIZE);
-
- switch (mit_des3_key_sched(*(mit_des3_cblock *)key->contents,
- *schedule)) {
- case -1:
- return(KRB5DES_BAD_KEYPAR);
- case -2:
- return(KRB5DES_WEAK_KEY);
- }
- return 0;
-}
-
-static krb5_error_code
-k5_des3_encrypt(const krb5_keyblock *key, const krb5_data *ivec,
- const krb5_data *input, krb5_data *output)
-{
- mit_des3_key_schedule schedule;
- krb5_error_code err;
-
- err = validate_and_schedule(key, ivec, input, output, &schedule);
- if (err)
- return err;
-
- /* this has a return value, but the code always returns zero */
- krb5int_des3_cbc_encrypt((krb5_pointer) input->data,
- (krb5_pointer) output->data, input->length,
- schedule[0], schedule[1], schedule[2],
- ivec?(const unsigned char *) ivec->data:(const unsigned char *)mit_des_zeroblock);
-
- zap(schedule, sizeof(schedule));
-
- return(0);
-}
-
-static krb5_error_code
-k5_des3_decrypt(const krb5_keyblock *key, const krb5_data *ivec,
- const krb5_data *input, krb5_data *output)
-{
- mit_des3_key_schedule schedule;
- krb5_error_code err;
-
- err = validate_and_schedule(key, ivec, input, output, &schedule);
- if (err)
- return err;
-
- /* this has a return value, but the code always returns zero */
- krb5int_des3_cbc_decrypt((krb5_pointer) input->data,
- (krb5_pointer) output->data, input->length,
- schedule[0], schedule[1], schedule[2],
- ivec?(const unsigned char *) ivec->data:(const unsigned char *)mit_des_zeroblock);
-
- zap(schedule, sizeof(schedule));
-
- return(0);
-}
-
-static krb5_error_code
-k5_des3_make_key(const krb5_data *randombits, krb5_keyblock *key)
-{
- int i;
-
- if (key->length != 24)
- return(KRB5_BAD_KEYSIZE);
- if (randombits->length != 21)
- return(KRB5_CRYPTO_INTERNAL);
-
- key->magic = KV5M_KEYBLOCK;
- key->length = 24;
-
- /* take the seven bytes, move them around into the top 7 bits of the
- 8 key bytes, then compute the parity bits. Do this three times. */
-
- for (i=0; i<3; i++) {
- memcpy(key->contents+i*8, randombits->data+i*7, 7);
- key->contents[i*8+7] = (((key->contents[i*8]&1)<<1) |
- ((key->contents[i*8+1]&1)<<2) |
- ((key->contents[i*8+2]&1)<<3) |
- ((key->contents[i*8+3]&1)<<4) |
- ((key->contents[i*8+4]&1)<<5) |
- ((key->contents[i*8+5]&1)<<6) |
- ((key->contents[i*8+6]&1)<<7));
-
- mit_des_fixup_key_parity(key->contents+i*8);
- }
-
- return(0);
-}
-
-static krb5_error_code
-k5_des3_encrypt_iov(const krb5_keyblock *key,
- const krb5_data *ivec,
- krb5_crypto_iov *data,
- size_t num_data)
-{
- mit_des3_key_schedule schedule;
- krb5_error_code err;
-
- err = validate_and_schedule_iov(key, ivec, data, num_data, &schedule);
- if (err)
- return err;
-
- /* this has a return value, but the code always returns zero */
- krb5int_des3_cbc_encrypt_iov(data, num_data,
- schedule[0], schedule[1], schedule[2],
- ivec != NULL ? (unsigned char *) ivec->data : NULL);
-
- zap(schedule, sizeof(schedule));
-
- return(0);
-}
-
-static krb5_error_code
-k5_des3_decrypt_iov(const krb5_keyblock *key,
- const krb5_data *ivec,
- krb5_crypto_iov *data,
- size_t num_data)
-{
- mit_des3_key_schedule schedule;
- krb5_error_code err;
-
- err = validate_and_schedule_iov(key, ivec, data, num_data, &schedule);
- if (err)
- return err;
-
- /* this has a return value, but the code always returns zero */
- krb5int_des3_cbc_decrypt_iov(data, num_data,
- schedule[0], schedule[1], schedule[2],
- ivec != NULL ? (unsigned char *) ivec->data : NULL);
-
- zap(schedule, sizeof(schedule));
-
- return(0);
-}
-
-const struct krb5_enc_provider krb5int_enc_des3 = {
- 8,
- 21, 24,
- k5_des3_encrypt,
- k5_des3_decrypt,
- k5_des3_make_key,
- krb5int_des_init_state,
- krb5int_default_free_state,
- k5_des3_encrypt_iov,
- k5_des3_decrypt_iov
-};
+++ /dev/null
-/*
- * Copyright (C) 1998 by the FundsXpress, INC.
- *
- * 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 FundsXpress. not be used in advertising or publicity pertaining
- * to distribution of the software without specific, written prior
- * permission. FundsXpress makes no representations about the suitability of
- * this software for any purpose. It is provided "as is" without express
- * or implied warranty.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-#include "k5-int.h"
-
-extern const struct krb5_enc_provider krb5int_enc_des;
-extern const struct krb5_enc_provider krb5int_enc_des3;
-extern const struct krb5_enc_provider krb5int_enc_arcfour;
-extern const struct krb5_enc_provider krb5int_enc_aes128;
-extern const struct krb5_enc_provider krb5int_enc_aes256;
-extern const struct krb5_enc_provider krb5int_enc_aes128_ctr;
-extern const struct krb5_enc_provider krb5int_enc_aes256_ctr;
+++ /dev/null
-/* arcfour.c
- *
- * Copyright (c) 2000 by Computer Science Laboratory,
- * Rensselaer Polytechnic Institute
- *
- * #include STD_DISCLAIMER
- */
-
-#include "k5-int.h"
-#include "arcfour-int.h"
-#include "enc_provider.h"
-#include "../aead.h"
-/* gets the next byte from the PRNG */
-#if ((__GNUC__ >= 2) )
-static __inline__ unsigned int k5_arcfour_byte(ArcfourContext *);
-#else
-static unsigned int k5_arcfour_byte(ArcfourContext *);
-#endif /* gcc inlines*/
-
-/* Initializes the context and sets the key. */
-static krb5_error_code k5_arcfour_init(ArcfourContext *ctx, const unsigned char *key,
- unsigned int keylen);
-
-/* Encrypts/decrypts data. */
-static void k5_arcfour_crypt(ArcfourContext *ctx, unsigned char *dest,
- const unsigned char *src, unsigned int len);
-
-/* Interface layer to kerb5 crypto layer */
-static krb5_error_code
-k5_arcfour_docrypt(const krb5_keyblock *, const krb5_data *,
- const krb5_data *, krb5_data *);
-
-/* from a random bitstrem, construct a key */
-static krb5_error_code
-k5_arcfour_make_key(const krb5_data *, krb5_keyblock *);
-
-static const unsigned char arcfour_weakkey1[] = {0x00, 0x00, 0xfd};
-static const unsigned char arcfour_weakkey2[] = {0x03, 0xfd, 0xfc};
-static const struct {
- size_t length;
- const unsigned char *data;
-} arcfour_weakkeys[] = {
- { sizeof (arcfour_weakkey1), arcfour_weakkey1},
- { sizeof (arcfour_weakkey2), arcfour_weakkey2},
-};
-
-static inline unsigned int k5_arcfour_byte(ArcfourContext * ctx)
-{
- unsigned int x;
- unsigned int y;
- unsigned int sx, sy;
- unsigned char *state;
-
- state = ctx->state;
- x = (ctx->x + 1) & 0xff;
- sx = state[x];
- y = (sx + ctx->y) & 0xff;
- sy = state[y];
- ctx->x = x;
- ctx->y = y;
- state[y] = sx;
- state[x] = sy;
- return state[(sx + sy) & 0xff];
-}
-
-static void k5_arcfour_crypt(ArcfourContext *ctx, unsigned char *dest,
- const unsigned char *src, unsigned int len)
-{
- unsigned int i;
- for (i = 0; i < len; i++)
- dest[i] = src[i] ^ k5_arcfour_byte(ctx);
-}
-
-
-static krb5_error_code
-k5_arcfour_init(ArcfourContext *ctx, const unsigned char *key,
- unsigned int key_len)
-{
- unsigned int t, u;
- unsigned int keyindex;
- unsigned int stateindex;
- unsigned char* state;
- unsigned int counter;
-
- if (key_len != 16)
- return KRB5_BAD_MSIZE; /*this is probably not the correct error code
- to return */
- for (counter=0;
- counter < sizeof(arcfour_weakkeys)/sizeof(arcfour_weakkeys[0]);
- counter++)
- if (!memcmp(key, arcfour_weakkeys[counter].data,
- arcfour_weakkeys[counter].length))
- return KRB5DES_WEAK_KEY; /* most certainly not the correct error */
-
- state = &ctx->state[0];
- ctx->x = 0;
- ctx->y = 0;
- for (counter = 0; counter < 256; counter++)
- state[counter] = counter;
- keyindex = 0;
- stateindex = 0;
- for (counter = 0; counter < 256; counter++)
- {
- t = state[counter];
- stateindex = (stateindex + key[keyindex] + t) & 0xff;
- u = state[stateindex];
- state[stateindex] = t;
- state[counter] = u;
- if (++keyindex >= key_len)
- keyindex = 0;
- }
- return 0;
-}
-
-
-/* The workhorse of the arcfour system, this impliments the cipher */
-static krb5_error_code
-k5_arcfour_docrypt(const krb5_keyblock *key, const krb5_data *state,
- const krb5_data *input, krb5_data *output)
-{
- ArcfourContext *arcfour_ctx;
- ArcFourCipherState *cipher_state;
- int ret;
-
- if (key->length != 16)
- return(KRB5_BAD_KEYSIZE);
- if (state && (state->length != sizeof (ArcFourCipherState)))
- return(KRB5_BAD_MSIZE);
- if (input->length != output->length)
- return(KRB5_BAD_MSIZE);
-
- if (state) {
- cipher_state = (ArcFourCipherState *) state->data;
- arcfour_ctx=&cipher_state->ctx;
- if (cipher_state->initialized == 0) {
- if ((ret=k5_arcfour_init(arcfour_ctx, key->contents, key->length))) {
- return ret;
- }
- cipher_state->initialized = 1;
- }
- k5_arcfour_crypt(arcfour_ctx, (unsigned char *) output->data, (const unsigned char *) input->data, input->length);
- }
- else {
- arcfour_ctx=malloc(sizeof (ArcfourContext));
- if (arcfour_ctx == NULL)
- return ENOMEM;
- if ((ret=k5_arcfour_init(arcfour_ctx, key->contents, key->length))) {
- free(arcfour_ctx);
- return (ret);
- }
- k5_arcfour_crypt(arcfour_ctx, (unsigned char * ) output->data,
- (const unsigned char * ) input->data, input->length);
- memset(arcfour_ctx, 0, sizeof (ArcfourContext));
- free(arcfour_ctx);
- }
-
- return 0;
-}
-
-/* In-place encryption */
-static krb5_error_code
-k5_arcfour_docrypt_iov(const krb5_keyblock *key,
- const krb5_data *state,
- krb5_crypto_iov *data,
- size_t num_data)
-{
- ArcfourContext *arcfour_ctx = NULL;
- ArcFourCipherState *cipher_state = NULL;
- krb5_error_code ret;
- size_t i;
-
- if (key->length != 16)
- return KRB5_BAD_KEYSIZE;
- if (state != NULL && (state->length != sizeof(ArcFourCipherState)))
- return KRB5_BAD_MSIZE;
-
- if (state != NULL) {
- cipher_state = (ArcFourCipherState *)state->data;
- arcfour_ctx = &cipher_state->ctx;
- if (cipher_state->initialized == 0) {
- ret = k5_arcfour_init(arcfour_ctx, key->contents, key->length);
- if (ret != 0)
- return ret;
-
- cipher_state->initialized = 1;
- }
- } else {
- arcfour_ctx = (ArcfourContext *)malloc(sizeof(ArcfourContext));
- if (arcfour_ctx == NULL)
- return ENOMEM;
-
- ret = k5_arcfour_init(arcfour_ctx, key->contents, key->length);
- if (ret != 0) {
- free(arcfour_ctx);
- return ret;
- }
- }
-
- for (i = 0; i < num_data; i++) {
- krb5_crypto_iov *iov = &data[i];
-
- if (ENCRYPT_IOV(iov))
- k5_arcfour_crypt(arcfour_ctx, (unsigned char *)iov->data.data,
- (const unsigned char *)iov->data.data, iov->data.length);
- }
-
- if (state == NULL) {
- memset(arcfour_ctx, 0, sizeof(ArcfourContext));
- free(arcfour_ctx);
- }
-
- return 0;
-}
-
-static krb5_error_code
-k5_arcfour_make_key(const krb5_data *randombits, krb5_keyblock *key)
-{
- if (key->length != 16)
- return(KRB5_BAD_KEYSIZE);
- if (randombits->length != 16)
- return(KRB5_CRYPTO_INTERNAL);
-
- key->magic = KV5M_KEYBLOCK;
- key->length = 16;
-
- memcpy(key->contents, randombits->data, randombits->length);
-
- return(0);
-}
-
-static krb5_error_code
-k5_arcfour_init_state (const krb5_keyblock *key,
- krb5_keyusage keyusage, krb5_data *new_state)
-{
- /* Note that we can't actually set up the state here because the key
- * will change between now and when encrypt is called
- * because it is data dependent. Yeah, this has strange
- * properties. --SDH
- */
- new_state->length = sizeof (ArcFourCipherState);
- new_state->data = malloc (new_state->length);
- if (new_state->data) {
- memset (new_state->data, 0 , new_state->length);
- /* That will set initialized to zero*/
- }else {
- return (ENOMEM);
- }
- return 0;
-}
-
-/* Since the arcfour cipher is identical going forwards and backwards,
- we just call "docrypt" directly
-*/
-const struct krb5_enc_provider krb5int_enc_arcfour = {
- /* This seems to work... although I am not sure what the
- implications are in other places in the kerberos library */
- 1,
- /* Keysize is arbitrary in arcfour, but the constraints of the
- system, and to attempt to work with the MSFT system forces us
- to 16byte/128bit. Since there is no parity in the key, the
- byte and length are the same. */
- 16, 16,
- k5_arcfour_docrypt,
- k5_arcfour_docrypt,
- k5_arcfour_make_key,
- k5_arcfour_init_state, /*xxx not implemented yet*/
- krb5int_default_free_state,
- k5_arcfour_docrypt_iov,
- k5_arcfour_docrypt_iov
-};
projects / krb5.git / commitdiff