Remove CTS mode

ok jsing

1 files changed, 0 insertions, 267 deletions

diff --git a/src/lib/libcrypto/modes/cts128.c b/src/lib/libcrypto/modes/cts128.c
deleted file mode 100644
index ec81dd2433..0000000000
--- a/src/lib/libcrypto/modes/cts128.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/* $OpenBSD: cts128.c,v 1.6 2022/11/26 16:08:53 tb Exp $ */
-/* ====================================================================
- * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
- *
- * Rights for redistribution and usage in source and binary
- * forms are granted according to the OpenSSL license.
- */
-
-#include <openssl/crypto.h>
-#include "modes_local.h"
-#include <string.h>
-
-#ifndef MODES_DEBUG
-# ifndef NDEBUG
-#  define NDEBUG
-# endif
-#endif
-
-/*
- * Trouble with Ciphertext Stealing, CTS, mode is that there is no
- * common official specification, but couple of cipher/application
- * specific ones: RFC2040 and RFC3962. Then there is 'Proposal to
- * Extend CBC Mode By "Ciphertext Stealing"' at NIST site, which
- * deviates from mentioned RFCs. Most notably it allows input to be
- * of block length and it doesn't flip the order of the last two
- * blocks. CTS is being discussed even in ECB context, but it's not
- * adopted for any known application. This implementation provides
- * two interfaces: one compliant with above mentioned RFCs and one
- * compliant with the NIST proposal, both extending CBC mode.
- */
-
-size_t CRYPTO_cts128_encrypt_block(const unsigned char *in, unsigned char *out,
-                        size_t len, const void *key,
-                        unsigned char ivec[16], block128_f block)
-{       size_t residue, n;
-
-        if (len <= 16) return 0;
-
-        if ((residue=len%16) == 0) residue = 16;
-
-        len -= residue;
-
-        CRYPTO_cbc128_encrypt(in,out,len,key,ivec,block);
-
-        in  += len;
-        out += len;
-
-        for (n=0; n<residue; ++n)
-                ivec[n] ^= in[n];
-        (*block)(ivec,ivec,key);
-        memcpy(out,out-16,residue);
-        memcpy(out-16,ivec,16); 
-
-        return len+residue;
-}
-
-size_t CRYPTO_nistcts128_encrypt_block(const unsigned char *in, unsigned char *out,
-                        size_t len, const void *key,
-                        unsigned char ivec[16], block128_f block)
-{       size_t residue, n;
-
-        if (len < 16) return 0;
-
-        residue=len%16;
-
-        len -= residue;
-
-        CRYPTO_cbc128_encrypt(in,out,len,key,ivec,block);
-
-        if (residue==0) return len;
-
-        in  += len;
-        out += len;
-
-        for (n=0; n<residue; ++n)
-                ivec[n] ^= in[n];
-        (*block)(ivec,ivec,key);
-        memcpy(out-16+residue,ivec,16);
-
-        return len+residue;
-}
-
-size_t CRYPTO_cts128_encrypt(const unsigned char *in, unsigned char *out,
-                        size_t len, const void *key,
-                        unsigned char ivec[16], cbc128_f cbc)
-{       size_t residue;
-        union { size_t align; unsigned char c[16]; } tmp;
-
-        if (len <= 16) return 0;
-
-        if ((residue=len%16) == 0) residue = 16;
-
-        len -= residue;
-
-        (*cbc)(in,out,len,key,ivec,1);
-
-        in  += len;
-        out += len;
-
-        memset(tmp.c,0,sizeof(tmp));
-        memcpy(tmp.c,in,residue);
-        memcpy(out,out-16,residue);
-        (*cbc)(tmp.c,out-16,16,key,ivec,1);
-        return len+residue;
-}
-
-size_t CRYPTO_nistcts128_encrypt(const unsigned char *in, unsigned char *out,
-                        size_t len, const void *key,
-                        unsigned char ivec[16], cbc128_f cbc)
-{       size_t residue;
-        union { size_t align; unsigned char c[16]; } tmp;
-
-        if (len < 16) return 0;
-
-        residue=len%16;
-
-        len -= residue;
-
-        (*cbc)(in,out,len,key,ivec,1);
-
-        if (residue==0) return len;
-
-        in  += len;
-        out += len;
-
-        memset(tmp.c,0,sizeof(tmp));
-        memcpy(tmp.c,in,residue);
-        (*cbc)(tmp.c,out-16+residue,16,key,ivec,1);
-        return len+residue;
-}
-
-size_t CRYPTO_cts128_decrypt_block(const unsigned char *in, unsigned char *out,
-                        size_t len, const void *key,
-                        unsigned char ivec[16], block128_f block)
-{       size_t residue, n;
-        union { size_t align; unsigned char c[32]; } tmp;
-
-        if (len<=16) return 0;
-
-        if ((residue=len%16) == 0) residue = 16;
-
-        len -= 16+residue;
-
-        if (len) {
-                CRYPTO_cbc128_decrypt(in,out,len,key,ivec,block);
-                in  += len;
-                out += len;
-        }
-
-        (*block)(in,tmp.c+16,key);
-
-        memcpy(tmp.c,tmp.c+16,16);
-        memcpy(tmp.c,in+16,residue);
-        (*block)(tmp.c,tmp.c,key);
-
-        for(n=0; n<16; ++n) {
-                unsigned char c = in[n];
-                out[n] = tmp.c[n] ^ ivec[n];
-                ivec[n] = c;
-        }
-        for(residue+=16; n<residue; ++n)
-                out[n] = tmp.c[n] ^ in[n];
-
-        return 16+len+residue;
-}
-
-size_t CRYPTO_nistcts128_decrypt_block(const unsigned char *in, unsigned char *out,
-                        size_t len, const void *key,
-                        unsigned char ivec[16], block128_f block)
-{       size_t residue, n;
-        union { size_t align; unsigned char c[32]; } tmp;
-
-        if (len<16) return 0;
-
-        residue=len%16;
-
-        if (residue==0) {
-                CRYPTO_cbc128_decrypt(in,out,len,key,ivec,block);
-                return len;
-        }
-
-        len -= 16+residue;
-
-        if (len) {
-                CRYPTO_cbc128_decrypt(in,out,len,key,ivec,block);
-                in  += len;
-                out += len;
-        }
-
-        (*block)(in+residue,tmp.c+16,key);
-
-        memcpy(tmp.c,tmp.c+16,16);
-        memcpy(tmp.c,in,residue);
-        (*block)(tmp.c,tmp.c,key);
-
-        for(n=0; n<16; ++n) {
-                unsigned char c = in[n];
-                out[n] = tmp.c[n] ^ ivec[n];
-                ivec[n] = in[n+residue];
-                tmp.c[n] = c;
-        }
-        for(residue+=16; n<residue; ++n)
-                out[n] = tmp.c[n] ^ tmp.c[n-16];
-
-        return 16+len+residue;
-}
-
-size_t CRYPTO_cts128_decrypt(const unsigned char *in, unsigned char *out,
-                        size_t len, const void *key,
-                        unsigned char ivec[16], cbc128_f cbc)
-{       size_t residue;
-        union { size_t align; unsigned char c[32]; } tmp;
-
-        if (len<=16) return 0;
-
-        if ((residue=len%16) == 0) residue = 16;
-
-        len -= 16+residue;
-
-        if (len) {
-                (*cbc)(in,out,len,key,ivec,0);
-                in  += len;
-                out += len;
-        }
-
-        memset(tmp.c,0,sizeof(tmp));
-        /* this places in[16] at &tmp.c[16] and decrypted block at &tmp.c[0] */
-        (*cbc)(in,tmp.c,16,key,tmp.c+16,0);
-
-        memcpy(tmp.c,in+16,residue);
-        (*cbc)(tmp.c,tmp.c,32,key,ivec,0);
-        memcpy(out,tmp.c,16+residue);
-        return 16+len+residue;
-}
-
-size_t CRYPTO_nistcts128_decrypt(const unsigned char *in, unsigned char *out,
-                        size_t len, const void *key,
-                        unsigned char ivec[16], cbc128_f cbc)
-{       size_t residue;
-        union { size_t align; unsigned char c[32]; } tmp;
-
-        if (len<16) return 0;
-
-        residue=len%16;
-
-        if (residue==0) {
-                (*cbc)(in,out,len,key,ivec,0);
-                return len;
-        }
-
-        len -= 16+residue;
-
-        if (len) {
-                (*cbc)(in,out,len,key,ivec,0);
-                in  += len;
-                out += len;
-        }
-
-        memset(tmp.c,0,sizeof(tmp));
-        /* this places in[16] at &tmp.c[16] and decrypted block at &tmp.c[0] */
-        (*cbc)(in+residue,tmp.c,16,key,tmp.c+16,0);
-
-        memcpy(tmp.c,in,residue);
-        (*cbc)(tmp.c,tmp.c,32,key,ivec,0);
-        memcpy(out,tmp.c,16+residue);
-        return 16+len+residue;
-}