From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001 From: Wojtek Kosior Date: Fri, 30 Apr 2021 00:33:56 +0200 Subject: initial/final commit --- openssl-1.1.0h/crypto/des/cfb64ede.c | 190 +++++++++++++++++++++++++++++++++++ 1 file changed, 190 insertions(+) create mode 100644 openssl-1.1.0h/crypto/des/cfb64ede.c (limited to 'openssl-1.1.0h/crypto/des/cfb64ede.c') diff --git a/openssl-1.1.0h/crypto/des/cfb64ede.c b/openssl-1.1.0h/crypto/des/cfb64ede.c new file mode 100644 index 0000000..5edb979 --- /dev/null +++ b/openssl-1.1.0h/crypto/des/cfb64ede.c @@ -0,0 +1,190 @@ +/* + * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#include "des_locl.h" +#include "e_os.h" + +/* + * The input and output encrypted as though 64bit cfb mode is being used. + * The extra state information to record how much of the 64bit block we have + * used is contained in *num; + */ + +void DES_ede3_cfb64_encrypt(const unsigned char *in, unsigned char *out, + long length, DES_key_schedule *ks1, + DES_key_schedule *ks2, DES_key_schedule *ks3, + DES_cblock *ivec, int *num, int enc) +{ + register DES_LONG v0, v1; + register long l = length; + register int n = *num; + DES_LONG ti[2]; + unsigned char *iv, c, cc; + + iv = &(*ivec)[0]; + if (enc) { + while (l--) { + if (n == 0) { + c2l(iv, v0); + c2l(iv, v1); + + ti[0] = v0; + ti[1] = v1; + DES_encrypt3(ti, ks1, ks2, ks3); + v0 = ti[0]; + v1 = ti[1]; + + iv = &(*ivec)[0]; + l2c(v0, iv); + l2c(v1, iv); + iv = &(*ivec)[0]; + } + c = *(in++) ^ iv[n]; + *(out++) = c; + iv[n] = c; + n = (n + 1) & 0x07; + } + } else { + while (l--) { + if (n == 0) { + c2l(iv, v0); + c2l(iv, v1); + + ti[0] = v0; + ti[1] = v1; + DES_encrypt3(ti, ks1, ks2, ks3); + v0 = ti[0]; + v1 = ti[1]; + + iv = &(*ivec)[0]; + l2c(v0, iv); + l2c(v1, iv); + iv = &(*ivec)[0]; + } + cc = *(in++); + c = iv[n]; + iv[n] = cc; + *(out++) = c ^ cc; + n = (n + 1) & 0x07; + } + } + v0 = v1 = ti[0] = ti[1] = c = cc = 0; + *num = n; +} + +/* + * This is compatible with the single key CFB-r for DES, even thought that's + * not what EVP needs. + */ + +void DES_ede3_cfb_encrypt(const unsigned char *in, unsigned char *out, + int numbits, long length, DES_key_schedule *ks1, + DES_key_schedule *ks2, DES_key_schedule *ks3, + DES_cblock *ivec, int enc) +{ + register DES_LONG d0, d1, v0, v1; + register unsigned long l = length, n = ((unsigned int)numbits + 7) / 8; + register int num = numbits, i; + DES_LONG ti[2]; + unsigned char *iv; + unsigned char ovec[16]; + + if (num > 64) + return; + iv = &(*ivec)[0]; + c2l(iv, v0); + c2l(iv, v1); + if (enc) { + while (l >= n) { + l -= n; + ti[0] = v0; + ti[1] = v1; + DES_encrypt3(ti, ks1, ks2, ks3); + c2ln(in, d0, d1, n); + in += n; + d0 ^= ti[0]; + d1 ^= ti[1]; + l2cn(d0, d1, out, n); + out += n; + /* + * 30-08-94 - eay - changed because l>>32 and l<<32 are bad under + * gcc :-( + */ + if (num == 32) { + v0 = v1; + v1 = d0; + } else if (num == 64) { + v0 = d0; + v1 = d1; + } else { + iv = &ovec[0]; + l2c(v0, iv); + l2c(v1, iv); + l2c(d0, iv); + l2c(d1, iv); + /* shift ovec left most of the bits... */ + memmove(ovec, ovec + num / 8, 8 + (num % 8 ? 1 : 0)); + /* now the remaining bits */ + if (num % 8 != 0) + for (i = 0; i < 8; ++i) { + ovec[i] <<= num % 8; + ovec[i] |= ovec[i + 1] >> (8 - num % 8); + } + iv = &ovec[0]; + c2l(iv, v0); + c2l(iv, v1); + } + } + } else { + while (l >= n) { + l -= n; + ti[0] = v0; + ti[1] = v1; + DES_encrypt3(ti, ks1, ks2, ks3); + c2ln(in, d0, d1, n); + in += n; + /* + * 30-08-94 - eay - changed because l>>32 and l<<32 are bad under + * gcc :-( + */ + if (num == 32) { + v0 = v1; + v1 = d0; + } else if (num == 64) { + v0 = d0; + v1 = d1; + } else { + iv = &ovec[0]; + l2c(v0, iv); + l2c(v1, iv); + l2c(d0, iv); + l2c(d1, iv); + /* shift ovec left most of the bits... */ + memmove(ovec, ovec + num / 8, 8 + (num % 8 ? 1 : 0)); + /* now the remaining bits */ + if (num % 8 != 0) + for (i = 0; i < 8; ++i) { + ovec[i] <<= num % 8; + ovec[i] |= ovec[i + 1] >> (8 - num % 8); + } + iv = &ovec[0]; + c2l(iv, v0); + c2l(iv, v1); + } + d0 ^= ti[0]; + d1 ^= ti[1]; + l2cn(d0, d1, out, n); + out += n; + } + } + iv = &(*ivec)[0]; + l2c(v0, iv); + l2c(v1, iv); + v0 = v1 = d0 = d1 = ti[0] = ti[1] = 0; +} -- cgit v1.2.3