X-Git-Url: https://git.cryptolib.org/?a=blobdiff_plain;f=rsa%2Frsa_pkcs15.c;fp=rsa%2Frsa_pkcs15.c;h=0000000000000000000000000000000000000000;hb=cc6b183296a5852449e3324737e2a2dece788786;hp=b1ec7ca9c7e12dedc2f7a093d6ba44b7ff4de120;hpb=06d9213f132d05f61b65acc51de6f7ad1b42f48a;p=avr-crypto-lib.git

diff --git a/rsa/rsa_pkcs15.c b/rsa/rsa_pkcs15.c
deleted file mode 100644
index b1ec7ca..0000000
--- a/rsa/rsa_pkcs15.c
+++ /dev/null
@@ -1,134 +0,0 @@
-/* rsa_pkcs15.c */
-/*
-    This file is part of the ARM-Crypto-Lib.
-    Copyright (C) 2006-2011 Daniel Otte (daniel.otte@rub.de)
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include "bigint.h"
-#include "rsa_basic.h"
-
-#define DEBUG 0
-
-#if DEBUG
-#include "bigint_io.h"
-#include "cli.h"
-#endif
-
-#include "random_dummy.h"
-
-uint16_t rsa_pkcs15_compute_padlength_B(bigint_t* modulus, uint16_t msg_length_B){
-	return bigint_get_first_set_bit(modulus) / 8 + 1 - msg_length_B - 3;
-}
-
-uint8_t rsa_encrypt_pkcs15(void* dest, uint16_t* out_length, const void* src,
-	uint16_t length_B, rsa_publickey_t* key, const void* pad){
-	int16_t pad_length;
-	bigint_t x;
-	pad_length = rsa_pkcs15_compute_padlength_B(key->modulus, length_B);
-	if(pad_length<8){
-#if DEBUG
-		cli_putstr_P(PSTR("\r\nERROR: pad_length<8; pad_length: "));
-		cli_hexdump_rev(&pad_length, 2);
-#endif
-		return 2; /* message to long */
-	}
-	if(!pad){
-#if DEBUG
-		cli_putstr_P(PSTR("\r\nauto-generating pad ..."));
-#endif
-		uint16_t i;
-		uint8_t c;
-		for(i=0; i<pad_length; ++i){
-			do{
-				c = prng_get_byte();
-			}while(c==0);
-			((uint8_t*)dest)[i+2] = c;
-		}
-	}else{
-#if DEBUG
-		cli_putstr_P(PSTR("\r\nsupplied pad: "));
-		cli_hexdump_block(pad, pad_length, 4, 16);
-#endif
-		memcpy((uint8_t*)dest + 2, pad, pad_length);
-	}
-	((uint8_t*)dest)[0] = 0x00;
-	((uint8_t*)dest)[1] = 0x02;
-	((uint8_t*)dest)[2+pad_length] = 0x00;
-	memcpy((uint8_t*)dest+3+pad_length, src, length_B);
-	x.wordv = dest;
-	x.length_B = (length_B+pad_length+3+sizeof(bigint_word_t)-1)/sizeof(bigint_word_t);
-#if DEBUG
-	cli_putstr_P(PSTR("\r\nx-data: "));
-	cli_hexdump_block(x.wordv, x.length_B * sizeof(bigint_word_t), 4, 16);
-#endif
-	bigint_adjust(&x);
-	rsa_os2ip(&x, NULL, length_B+pad_length+3);
-	rsa_enc(&x, key);
-	rsa_i2osp(NULL, &x, out_length);
-	return 0;
-}
-
-uint8_t rsa_decrypt_pkcs15(void* dest, uint16_t* out_length, const void* src,
-	uint16_t length_B, rsa_privatekey_t* key, void* pad){
-	bigint_t x;
-	uint16_t m_length, pad_length=0, idx=0;
-	x.wordv = dest;
-	rsa_os2ip(&x, src, length_B);
-#if DEBUG
-	cli_putstr_P(PSTR("\r\ncalling rsa_dec() ..."));
-#endif
-	rsa_dec(&x, key);
-#if DEBUG
-	cli_putstr_P(PSTR("\r\nfinished rsa_dec() ..."));
-#endif
-	rsa_i2osp(NULL, &x, &m_length);
-#if DEBUG
-	cli_putstr_P(PSTR("\r\ndecoded block:"));
-	cli_hexdump_block(x.wordv, m_length, 4, 16);
-#endif
-	while(((uint8_t*)x.wordv)[idx]==0 && idx<m_length){
-		++idx;
-	}
-	if(((uint8_t*)x.wordv)[idx]!=2 || idx>=m_length){
-		return 1;
-	}
-	++idx;
-	while(((uint8_t*)x.wordv)[idx+pad_length]!=0  && (idx+pad_length)<m_length){
-		++pad_length;
-	}
-	if(pad_length<8 || (idx+pad_length)>=m_length){
-		return 2;
-	}
-	*out_length = m_length - idx - pad_length - 1;
-	if(pad){
-#if DEBUG
-		cli_putstr_P(PSTR("\r\npadding block:"));
-		cli_hexdump_block(((uint8_t*)x.wordv)+idx, pad_length, 4, 16);
-		cli_putstr_P(PSTR("\r\npad @ 0x"));
-		cli_hexdump_rev(&pad, 2);
-		cli_putstr_P(PSTR("\r\ndst @ 0x"));
-		cli_hexdump_rev(&dest, 2);
-#endif
-		memcpy(pad, ((uint8_t*)x.wordv)+idx, pad_length);
-	}
-	memmove(dest, ((uint8_t*)x.wordv) + idx + pad_length + 1, m_length - idx - pad_length - 1);
-
-	return 0;
-}
-