dropbear: libtomcrypt/demos/openssl-enc.c annotate

annotate libtomcrypt/demos/openssl-enc.c @ 1471:6dba84798cd5

Update to libtomcrypt 1.18.1, merged with Dropbear changes

author	Matt Johnston <matt@ucc.asn.au>
date	Fri, 09 Feb 2018 21:44:05 +0800
parents
children

rev	line source
1471 6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	2 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 * LibTomCrypt is a library that provides various cryptographic
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	4 * algorithms in a highly modular and flexible manner.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	5 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	6 * The library is free for all purposes without any express
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	7 * guarantee it works.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	8 */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	9
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	10 /*
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	11 * Demo to do the rough equivalent of:
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	12 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	13 * openssl enc -aes-256-cbc -pass pass:foobar -in infile -out outfile -p
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	14 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	15 * Compilation:
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	16 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	17 * $(CC) -I /path/to/headers -L .../libs \
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	18 * -o openssl-enc \
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	19 * openssl-enc.c -ltomcrypt
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	20 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	21 * Usage:
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	22 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	23 * ./openssl-enc <enc\|dec> infile outfile "passphrase" [salt]
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	24 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	25 * If provided, the salt must be EXACTLY a 16-char hex string.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 * Demo is an example of:
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 * - (When decrypting) yanking salt out of the OpenSSL "Salted__..." header
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30 * - OpenSSL-compatible key derivation (in OpenSSL's modified PKCS#5v1 approach)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31 * - Grabbing an Initialization Vector from the key generator
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32 * - Performing simple block encryption using AES
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33 * - PKCS#7-type padding (which hopefully can get ripped out of this demo and
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34 * made a libtomcrypt thing someday).
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	35 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	36 * This program is free for all purposes without any express guarantee it
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	37 * works. If you really want to see a license here, assume the WTFPL :-)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	38 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	39 * BJ Black, [email protected], https://wjblack.com
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	40 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	41 * BUGS:
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42 * Passing a password on a command line is a HORRIBLE idea. Don't use
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	43 * this program for serious work!
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	46 #include <tomcrypt.h>
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 #ifndef LTC_RIJNDAEL
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 #error Cannot compile this demo; Rijndael (AES) required
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	50 #endif
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51 #ifndef LTC_CBC_MODE
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	52 #error Cannot compile this demo; CBC mode required
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	53 #endif
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	54 #ifndef LTC_PKCS_5
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	55 #error Cannot compile this demo; PKCS5 required
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	56 #endif
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	57 #ifndef LTC_RNG_GET_BYTES
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	58 #error Cannot compile this demo; random generator required
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	59 #endif
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	60 #ifndef LTC_MD5
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	61 #error Cannot compile this demo; MD5 required
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	62 #endif
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	63
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	64 /* OpenSSL by default only runs one hash round */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	65 #define OPENSSL_ITERATIONS 1
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	66 /* Use aes-256-cbc, so 256 bits of key, 128 of IV */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	67 #define KEY_LENGTH (256>>3)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	68 #define IV_LENGTH (128>>3)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	69 /* PKCS#5v1 requires exactly an 8-byte salt */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	70 #define SALT_LENGTH 8
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	71 /* The header OpenSSL puts on an encrypted file */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	72 static char salt_header[] = { 'S', 'a', 'l', 't', 'e', 'd', '_', '_' };
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	73
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	74 #include <errno.h>
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	75 #include <stdio.h>
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	76 #include <string.h>
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	77
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	78 /* A simple way to handle the possibility that a block may increase in size
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	79 after padding. */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	80 union paddable {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	81 unsigned char unpad[1024];
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	82 unsigned char pad[1024+MAXBLOCKSIZE];
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	83 };
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	84
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	85 /*
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	86 * Print usage and exit with a bad status (and perror() if any errno).
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	87 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	88 * Input: argv[0] and the error string
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89 * Output: <no return>
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	90 * Side Effects: print messages and barf (does exit(3))
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	91 */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	92 void barf(const char pname, const char err)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	93 {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	94 printf("Usage: %s <enc\|dec> infile outfile passphrase [salt]\n", pname);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	95 printf("\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	96 printf(" # encrypts infile->outfile, random salt\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	97 printf(" %s enc infile outfile \"passphrase\"\n", pname);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	98 printf("\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	99 printf(" # encrypts infile->outfile, salt from cmdline\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	100 printf(" %s enc infile outfile pass 0123456789abcdef\n", pname);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	101 printf("\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102 printf(" # decrypts infile->outfile, pulls salt from infile\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	103 printf(" %s dec infile outfile pass\n", pname);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	104 printf("\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	105 printf(" # decrypts infile->outfile, salt specified\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	106 printf(" # (don't try to read the salt from infile)\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	107 printf(" %s dec infile outfile pass 0123456789abcdef"
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	108 "\n", pname);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	109 printf("\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	110 printf("Application Error: %s\n", err);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	111 if(errno)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	112 perror(" System Error");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	113 exit(-1);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	114 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	115
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	116 /*
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	117 * Parse a salt value passed in on the cmdline.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	118 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	119 * Input: string passed in and a buf to put it in (exactly 8 bytes!)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	120 * Output: CRYPT_OK if parsed OK, CRYPT_ERROR if not
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	121 * Side Effects: none
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	122 */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	123 int parse_hex_salt(unsigned char in, unsigned char out)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	124 {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	125 int idx;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	126 for(idx=0; idx<SALT_LENGTH; idx++)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	127 if(sscanf((char)in+idx2, "%02hhx", out+idx) != 1)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	128 return CRYPT_ERROR;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	129 return CRYPT_OK;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	130 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	131
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	132 /*
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	133 * Parse the Salted__[+8 bytes] from an OpenSSL-compatible file header.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	134 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	135 * Input: file to read from and a to put the salt in (exactly 8 bytes!)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	136 * Output: CRYPT_OK if parsed OK, CRYPT_ERROR if not
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	137 * Side Effects: infile's read pointer += 16
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	138 */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	139 int parse_openssl_header(FILE in, unsigned char out)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140 {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141 unsigned char tmp[SALT_LENGTH];
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	142 if(fread(tmp, 1, sizeof(tmp), in) != sizeof(tmp))
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143 return CRYPT_ERROR;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	144 if(memcmp(tmp, salt_header, sizeof(tmp)))
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145 return CRYPT_ERROR;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	146 if(fread(tmp, 1, sizeof(tmp), in) != sizeof(tmp))
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	147 return CRYPT_ERROR;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	148 memcpy(out, tmp, sizeof(tmp));
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 return CRYPT_OK;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	150 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	151
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	152 /*
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	153 * Dump a hexed stream of bytes (convenience func).
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	154 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	155 * Input: buf to read from, length
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	156 * Output: none
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	157 * Side Effects: bytes printed as a hex blob, no lf at the end
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	158 */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	159 void dump_bytes(unsigned char *in, unsigned long len)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160 {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	161 unsigned long idx;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162 for(idx=0; idx<len; idx++)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	163 printf("%02hhX", *(in+idx));
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	164 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	166 /*
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	167 * Pad or unpad a message using PKCS#7 padding.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	168 * Padding will add 1-(blocksize) bytes and unpadding will remove that amount.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	169 * Set is_padding to 1 to pad, 0 to unpad.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	170 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	171 * Input: paddable buffer, size read, block length of cipher, mode
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	172 * Output: number of bytes after padding resp. after unpadding
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	173 * Side Effects: none
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	174 */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	175 size_t pkcs7_pad(union paddable *buf, size_t nb, int block_length,
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	176 int is_padding)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	177 {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	178 unsigned char padval;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	179 off_t idx;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	180
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	181 if(is_padding) {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	182 /* We are PADDING this block (and therefore adding bytes) */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	183 /* The pad value in PKCS#7 is the number of bytes remaining in
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	184 the block, so for a 16-byte block and 3 bytes left, it's
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	185 0x030303. In the oddball case where nb is an exact multiple
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	186 multiple of block_length, set the padval to blocksize (i.e.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	187 add one full block) */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	188 padval = (unsigned char) (block_length - (nb % block_length));
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	189 padval = padval ? padval : block_length;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	190
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	191 memset(buf->pad+nb, padval, padval);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	192 return nb+padval;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	193 } else {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	194 /* We are UNPADDING this block (and removing bytes)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	195 We really just need to verify that the pad bytes are correct,
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	196 so start at the end of the string and work backwards. */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	197
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	198 /* Figure out what the padlength should be by looking at the
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	199 last byte */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	200 idx = nb-1;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	201 padval = buf->pad[idx];
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	202
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	203 /* padval must be nonzero and <= block length */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	204 if(padval <= 0 \|\| padval > block_length)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	205 return 0;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	206
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	207 /* First byte's accounted for; do the rest */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	208 idx--;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	209
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	210 while(idx >= (off_t)(nb-padval))
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	211 if(buf->pad[idx] != padval)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	212 return 0;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	213 else
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	214 idx--;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	215
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	216 /* If we got here, the pad checked out, so return a smaller
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	217 number of bytes than nb (basically where we left off+1) */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	218 return idx+1;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	219 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	220 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	221
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	222 /*
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	223 * Perform an encrypt/decrypt operation to/from files using AES+CBC+PKCS7 pad.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	224 * Set encrypt to 1 to encrypt, 0 to decrypt.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	225 *
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226 * Input: in/out files, key, iv, and mode
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	227 * Output: CRYPT_OK if no error
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	228 * Side Effects: bytes slurped from infile, pushed to outfile, fds updated.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	229 */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	230 int do_crypt(FILE infd, FILE outfd, unsigned char key, unsigned char iv,
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	231 int encrypt)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	232 {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	233 union paddable inbuf, outbuf;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	234 int cipher, ret;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	235 symmetric_CBC cbc;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	236 size_t nb;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	237
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	238 /* Register your cipher! */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	239 cipher = register_cipher(&aes_desc);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	240 if(cipher == -1)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	241 return CRYPT_INVALID_CIPHER;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	242
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243 /* Start a CBC session with cipher/key/val params */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	244 ret = cbc_start(cipher, iv, key, KEY_LENGTH, 0, &cbc);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	245 if( ret != CRYPT_OK )
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	246 return -1;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	247
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	248 do {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	249 /* Get bytes from the source */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250 nb = fread(inbuf.unpad, 1, sizeof(inbuf.unpad), infd);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	251 if(!nb)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	252 return encrypt ? CRYPT_OK : CRYPT_ERROR;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	253
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	254 /* Barf if we got a read error */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	255 if(ferror(infd))
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	256 return CRYPT_ERROR;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	257
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	258 if(encrypt) {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	259 /* We're encrypting, so pad first (if at EOF) and then
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	260 crypt */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	261 if(feof(infd))
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	262 nb = pkcs7_pad(&inbuf, nb,
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	263 aes_desc.block_length, 1);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	264
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	265 ret = cbc_encrypt(inbuf.pad, outbuf.pad, nb, &cbc);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	266 if(ret != CRYPT_OK)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	267 return ret;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	268
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	269 } else {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	270 /* We're decrypting, so decrypt and then unpad if at
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	271 EOF */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	272 ret = cbc_decrypt(inbuf.unpad, outbuf.unpad, nb, &cbc);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	273 if( ret != CRYPT_OK )
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	274 return ret;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	275
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	276 if( feof(infd) )
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	277 nb = pkcs7_pad(&outbuf, nb,
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	278 aes_desc.block_length, 0);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	279 if(nb == 0)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	280 /* The file didn't decrypt correctly */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	281 return CRYPT_ERROR;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	282
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	283 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	284
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	285 /* Push bytes to outfile */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	286 if(fwrite(outbuf.unpad, 1, nb, outfd) != nb)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	287 return CRYPT_ERROR;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	288
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289 } while(!feof(infd));
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	290
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	291 /* Close up */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	292 cbc_done(&cbc);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	293
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	294 return CRYPT_OK;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	295 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	296
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	297 /* Convenience macro for the various barfable places below */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	298 #define BARF(a) { \
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	299 if(infd) fclose(infd); \
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	300 if(outfd) { fclose(outfd); remove(argv[3]); } \
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	301 barf(argv[0], a); \
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	302 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	303 /*
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	304 * The main routine. Mostly validate cmdline params, open files, run the KDF,
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	305 * and do the crypt.
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	306 */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	307 int main(int argc, char *argv[]) {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	308 unsigned char salt[SALT_LENGTH];
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	309 FILE infd = NULL, outfd = NULL;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	310 int encrypt = -1;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	311 int hash = -1;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	312 int ret;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	313 unsigned char keyiv[KEY_LENGTH + IV_LENGTH];
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	314 unsigned long keyivlen = (KEY_LENGTH + IV_LENGTH);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	315 unsigned char key, iv;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	316
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	317 /* Check proper number of cmdline args */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	318 if(argc < 5 \|\| argc > 6)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	319 BARF("Invalid number of arguments");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	320
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	321 /* Check proper mode of operation */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	322 if (!strncmp(argv[1], "enc", 3))
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	323 encrypt = 1;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	324 else if(!strncmp(argv[1], "dec", 3))
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	325 encrypt = 0;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	326 else
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	327 BARF("Bad command name");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	328
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	329 /* Check we can open infile/outfile */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	330 infd = fopen(argv[2], "rb");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	331 if(infd == NULL)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	332 BARF("Could not open infile");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	333 outfd = fopen(argv[3], "wb");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	334 if(outfd == NULL)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	335 BARF("Could not open outfile");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	336
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	337 /* Get the salt from wherever */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	338 if(argc == 6) {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	339 /* User-provided */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	340 if(parse_hex_salt((unsigned char*) argv[5], salt) != CRYPT_OK)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	341 BARF("Bad user-specified salt");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	342 } else if(!strncmp(argv[1], "enc", 3)) {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	343 /* Encrypting; get from RNG */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	344 if(rng_get_bytes(salt, sizeof(salt), NULL) != sizeof(salt))
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	345 BARF("Not enough random data");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	346 } else {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	347 /* Parse from infile (decrypt only) */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	348 if(parse_openssl_header(infd, salt) != CRYPT_OK)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	349 BARF("Invalid OpenSSL header in infile");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	350 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	351
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	352 /* Fetch the MD5 hasher for PKCS#5 */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	353 hash = register_hash(&md5_desc);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	354 if(hash == -1)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	355 BARF("Could not register MD5 hash");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	356
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	357 /* Set things to a sane initial state */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	358 zeromem(keyiv, sizeof(keyiv));
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	359 key = keyiv + 0; /* key comes first */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	360 iv = keyiv + KEY_LENGTH; /* iv comes next */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	361
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	362 /* Run the key derivation from the provided passphrase. This gets us
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	363 the key and iv. */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	364 ret = pkcs_5_alg1_openssl((unsigned char*)argv[4], strlen(argv[4]), salt,
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	365 OPENSSL_ITERATIONS, hash, keyiv, &keyivlen );
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	366 if(ret != CRYPT_OK)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	367 BARF("Could not derive key/iv from passphrase");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	368
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	369 /* Display the salt/key/iv like OpenSSL cmdline does when -p */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	370 printf("salt="); dump_bytes(salt, sizeof(salt)); printf("\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	371 printf("key="); dump_bytes(key, KEY_LENGTH); printf("\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	372 printf("iv ="); dump_bytes(iv, IV_LENGTH ); printf("\n");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	373
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	374 /* If we're encrypting, write the salt header as OpenSSL does */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	375 if(!strncmp(argv[1], "enc", 3)) {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	376 if(fwrite(salt_header, 1, sizeof(salt_header), outfd) !=
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	377 sizeof(salt_header) )
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	378 BARF("Error writing salt header to outfile");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	379 if(fwrite(salt, 1, sizeof(salt), outfd) != sizeof(salt))
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	380 BARF("Error writing salt to outfile");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	381 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	382
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	383 /* At this point, the files are open, the salt has been figured out,
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	384 and we're ready to pump data through crypt. */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	385
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	386 /* Do the crypt operation */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	387 if(do_crypt(infd, outfd, key, iv, encrypt) != CRYPT_OK)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	388 BARF("Error during crypt operation");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	389
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	390 /* Clean up */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	391 fclose(infd); fclose(outfd);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	392 return 0;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	393 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	394
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	395 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	396 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes Matt Johnston <matt@ucc.asn.au> parents: diff changeset	397 /* commit time: $Format:%ai$ */

Mercurial > dropbear

annotate libtomcrypt/demos/openssl-enc.c @ 1471:6dba84798cd5