1 files changed, 0 insertions, 494 deletions

diff --git a/crypto/openssh/authfile.c b/crypto/openssh/authfile.c
deleted file mode 100644
index b8bc9e5a73789..0000000000000
--- a/crypto/openssh/authfile.c
+++ /dev/null
@@ -1,494 +0,0 @@
-/*
- *
- * authfile.c
- *
- * Author: Tatu Ylonen <ylo@cs.hut.fi>
- *
- * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
- *                    All rights reserved
- *
- * Created: Mon Mar 27 03:52:05 1995 ylo
- *
- * This file contains functions for reading and writing identity files, and
- * for reading the passphrase from the user.
- *
- * $FreeBSD$
- */
-
-#include "includes.h"
-RCSID("$Id: authfile.c,v 1.16 2000/04/26 21:28:32 markus Exp $");
-
-#include <openssl/bn.h>
-#include <openssl/dsa.h>
-#include <openssl/rsa.h>
-#include <openssl/pem.h>
-#include <openssl/evp.h>
-
-#include "xmalloc.h"
-#include "buffer.h"
-#include "bufaux.h"
-#include "cipher.h"
-#include "ssh.h"
-#include "key.h"
-
-/* Version identification string for identity files. */
-#define AUTHFILE_ID_STRING "SSH PRIVATE KEY FILE FORMAT 1.1\n"
-
-/*
- * Saves the authentication (private) key in a file, encrypting it with
- * passphrase.  The identification of the file (lowest 64 bits of n) will
- * precede the key to provide identification of the key without needing a
- * passphrase.
- */
-
-int
-save_private_key_rsa(const char *filename, const char *passphrase,
-    RSA *key, const char *comment)
-{
-	Buffer buffer, encrypted;
-	char buf[100], *cp;
-	int fd, i;
-	CipherContext cipher;
-	int cipher_type;
-	u_int32_t rand;
-
-	/*
-	 * If the passphrase is empty, use SSH_CIPHER_NONE to ease converting
-	 * to another cipher; otherwise use SSH_AUTHFILE_CIPHER.
-	 */
-	if (strcmp(passphrase, "") == 0)
-		cipher_type = SSH_CIPHER_NONE;
-	else
-		cipher_type = SSH_AUTHFILE_CIPHER;
-
-	/* This buffer is used to built the secret part of the private key. */
-	buffer_init(&buffer);
-
-	/* Put checkbytes for checking passphrase validity. */
-	rand = arc4random();
-	buf[0] = rand & 0xff;
-	buf[1] = (rand >> 8) & 0xff;
-	buf[2] = buf[0];
-	buf[3] = buf[1];
-	buffer_append(&buffer, buf, 4);
-
-	/*
-	 * Store the private key (n and e will not be stored because they
-	 * will be stored in plain text, and storing them also in encrypted
-	 * format would just give known plaintext).
-	 */
-	buffer_put_bignum(&buffer, key->d);
-	buffer_put_bignum(&buffer, key->iqmp);
-	buffer_put_bignum(&buffer, key->q);	/* reverse from SSL p */
-	buffer_put_bignum(&buffer, key->p);	/* reverse from SSL q */
-
-	/* Pad the part to be encrypted until its size is a multiple of 8. */
-	while (buffer_len(&buffer) % 8 != 0)
-		buffer_put_char(&buffer, 0);
-
-	/* This buffer will be used to contain the data in the file. */
-	buffer_init(&encrypted);
-
-	/* First store keyfile id string. */
-	cp = AUTHFILE_ID_STRING;
-	for (i = 0; cp[i]; i++)
-		buffer_put_char(&encrypted, cp[i]);
-	buffer_put_char(&encrypted, 0);
-
-	/* Store cipher type. */
-	buffer_put_char(&encrypted, cipher_type);
-	buffer_put_int(&encrypted, 0);	/* For future extension */
-
-	/* Store public key.  This will be in plain text. */
-	buffer_put_int(&encrypted, BN_num_bits(key->n));
-	buffer_put_bignum(&encrypted, key->n);
-	buffer_put_bignum(&encrypted, key->e);
-	buffer_put_string(&encrypted, comment, strlen(comment));
-
-	/* Allocate space for the private part of the key in the buffer. */
-	buffer_append_space(&encrypted, &cp, buffer_len(&buffer));
-
-	cipher_set_key_string(&cipher, cipher_type, passphrase);
-	cipher_encrypt(&cipher, (unsigned char *) cp,
-		       (unsigned char *) buffer_ptr(&buffer),
-		       buffer_len(&buffer));
-	memset(&cipher, 0, sizeof(cipher));
-
-	/* Destroy temporary data. */
-	memset(buf, 0, sizeof(buf));
-	buffer_free(&buffer);
-
-	fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0600);
-	if (fd < 0)
-		return 0;
-	if (write(fd, buffer_ptr(&encrypted), buffer_len(&encrypted)) !=
-	    buffer_len(&encrypted)) {
-		debug("Write to key file %.200s failed: %.100s", filename,
-		      strerror(errno));
-		buffer_free(&encrypted);
-		close(fd);
-		remove(filename);
-		return 0;
-	}
-	close(fd);
-	buffer_free(&encrypted);
-	return 1;
-}
-
-/* save DSA key in OpenSSL PEM format */
-
-int
-save_private_key_dsa(const char *filename, const char *passphrase,
-    DSA *dsa, const char *comment)
-{
-	FILE *fp;
-	int fd;
-	int success = 1;
-	int len = strlen(passphrase);
-
-	if (len > 0 && len <= 4) {
-		error("passphrase too short: %d bytes", len);
-		errno = 0;
-		return 0;
-	}
-	fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0600);
-	if (fd < 0) {
-		debug("open %s failed", filename);
-		return 0;
-	}
-	fp = fdopen(fd, "w");
-	if (fp == NULL ) {
-		debug("fdopen %s failed", filename);
-		close(fd);
-		return 0;
-	}
-	if (len > 0) {
-		if (!PEM_write_DSAPrivateKey(fp, dsa, EVP_des_ede3_cbc(),
-		    (char *)passphrase, strlen(passphrase), NULL, NULL))
-			success = 0;
-	} else {
-		if (!PEM_write_DSAPrivateKey(fp, dsa, NULL,
-		    NULL, 0, NULL, NULL))
-			success = 0;
-	}
-	fclose(fp);
-	return success;
-}
-
-int
-save_private_key(const char *filename, const char *passphrase, Key *key,
-    const char *comment)
-{
-	switch (key->type) {
-	case KEY_RSA:
-		return save_private_key_rsa(filename, passphrase, key->rsa, comment);
-		break;
-	case KEY_DSA:
-		return save_private_key_dsa(filename, passphrase, key->dsa, comment);
-		break;
-	default:
-		break;
-	}
-	return 0;
-}
-
-/*
- * Loads the public part of the key file.  Returns 0 if an error was
- * encountered (the file does not exist or is not readable), and non-zero
- * otherwise.
- */
-
-int
-load_public_key_rsa(const char *filename, RSA * pub, char **comment_return)
-{
-	int fd, i;
-	off_t len;
-	Buffer buffer;
-	char *cp;
-
-	fd = open(filename, O_RDONLY);
-	if (fd < 0)
-		return 0;
-	len = lseek(fd, (off_t) 0, SEEK_END);
-	lseek(fd, (off_t) 0, SEEK_SET);
-
-	buffer_init(&buffer);
-	buffer_append_space(&buffer, &cp, len);
-
-	if (read(fd, cp, (size_t) len) != (size_t) len) {
-		debug("Read from key file %.200s failed: %.100s", filename,
-		    strerror(errno));
-		buffer_free(&buffer);
-		close(fd);
-		return 0;
-	}
-	close(fd);
-
-	/* Check that it is at least big enought to contain the ID string. */
-	if (len < strlen(AUTHFILE_ID_STRING) + 1) {
-		debug("Bad key file %.200s.", filename);
-		buffer_free(&buffer);
-		return 0;
-	}
-	/*
-	 * Make sure it begins with the id string.  Consume the id string
-	 * from the buffer.
-	 */
-	for (i = 0; i < (unsigned int) strlen(AUTHFILE_ID_STRING) + 1; i++)
-		if (buffer_get_char(&buffer) != (u_char) AUTHFILE_ID_STRING[i]) {
-			debug("Bad key file %.200s.", filename);
-			buffer_free(&buffer);
-			return 0;
-		}
-	/* Skip cipher type and reserved data. */
-	(void) buffer_get_char(&buffer);	/* cipher type */
-	(void) buffer_get_int(&buffer);		/* reserved */
-
-	/* Read the public key from the buffer. */
-	buffer_get_int(&buffer);
-	/* XXX alloc */
-	if (pub->n == NULL)
-		pub->n = BN_new();
-	buffer_get_bignum(&buffer, pub->n);
-	/* XXX alloc */
-	if (pub->e == NULL)
-		pub->e = BN_new();
-	buffer_get_bignum(&buffer, pub->e);
-	if (comment_return)
-		*comment_return = buffer_get_string(&buffer, NULL);
-	/* The encrypted private part is not parsed by this function. */
-
-	buffer_free(&buffer);
-
-	return 1;
-}
-
-int
-load_public_key(const char *filename, Key * key, char **comment_return)
-{
-	switch (key->type) {
-	case KEY_RSA:
-		return load_public_key_rsa(filename, key->rsa, comment_return);
-		break;
-	case KEY_DSA:
-	default:
-		break;
-	}
-	return 0;
-}
-
-/*
- * Loads the private key from the file.  Returns 0 if an error is encountered
- * (file does not exist or is not readable, or passphrase is bad). This
- * initializes the private key.
- * Assumes we are called under uid of the owner of the file.
- */
-
-int
-load_private_key_rsa(int fd, const char *filename,
-    const char *passphrase, RSA * prv, char **comment_return)
-{
-	int i, check1, check2, cipher_type;
-	off_t len;
-	Buffer buffer, decrypted;
-	char *cp;
-	CipherContext cipher;
-	BN_CTX *ctx;
-	BIGNUM *aux;
-
-	len = lseek(fd, (off_t) 0, SEEK_END);
-	lseek(fd, (off_t) 0, SEEK_SET);
-
-	buffer_init(&buffer);
-	buffer_append_space(&buffer, &cp, len);
-
-	if (read(fd, cp, (size_t) len) != (size_t) len) {
-		debug("Read from key file %.200s failed: %.100s", filename,
-		      strerror(errno));
-		buffer_free(&buffer);
-		close(fd);
-		return 0;
-	}
-	close(fd);
-
-	/* Check that it is at least big enought to contain the ID string. */
-	if (len < strlen(AUTHFILE_ID_STRING) + 1) {
-		debug("Bad key file %.200s.", filename);
-		buffer_free(&buffer);
-		return 0;
-	}
-	/*
-	 * Make sure it begins with the id string.  Consume the id string
-	 * from the buffer.
-	 */
-	for (i = 0; i < (unsigned int) strlen(AUTHFILE_ID_STRING) + 1; i++)
-		if (buffer_get_char(&buffer) != (unsigned char) AUTHFILE_ID_STRING[i]) {
-			debug("Bad key file %.200s.", filename);
-			buffer_free(&buffer);
-			return 0;
-		}
-	/* Read cipher type. */
-	cipher_type = buffer_get_char(&buffer);
-	(void) buffer_get_int(&buffer);	/* Reserved data. */
-
-	/* Read the public key from the buffer. */
-	buffer_get_int(&buffer);
-	prv->n = BN_new();
-	buffer_get_bignum(&buffer, prv->n);
-	prv->e = BN_new();
-	buffer_get_bignum(&buffer, prv->e);
-	if (comment_return)
-		*comment_return = buffer_get_string(&buffer, NULL);
-	else
-		xfree(buffer_get_string(&buffer, NULL));
-
-	/* Check that it is a supported cipher. */
-	if (((cipher_mask1() | SSH_CIPHER_NONE | SSH_AUTHFILE_CIPHER) &
-	     (1 << cipher_type)) == 0) {
-		debug("Unsupported cipher %.100s used in key file %.200s.",
-		      cipher_name(cipher_type), filename);
-		buffer_free(&buffer);
-		goto fail;
-	}
-	/* Initialize space for decrypted data. */
-	buffer_init(&decrypted);
-	buffer_append_space(&decrypted, &cp, buffer_len(&buffer));
-
-	/* Rest of the buffer is encrypted.  Decrypt it using the passphrase. */
-	cipher_set_key_string(&cipher, cipher_type, passphrase);
-	cipher_decrypt(&cipher, (unsigned char *) cp,
-		       (unsigned char *) buffer_ptr(&buffer),
-		       buffer_len(&buffer));
-
-	buffer_free(&buffer);
-
-	check1 = buffer_get_char(&decrypted);
-	check2 = buffer_get_char(&decrypted);
-	if (check1 != buffer_get_char(&decrypted) ||
-	    check2 != buffer_get_char(&decrypted)) {
-		if (strcmp(passphrase, "") != 0)
-			debug("Bad passphrase supplied for key file %.200s.", filename);
-		/* Bad passphrase. */
-		buffer_free(&decrypted);
-fail:
-		BN_clear_free(prv->n);
-		prv->n = NULL;
-		BN_clear_free(prv->e);
-		prv->e = NULL;
-		if (comment_return)
-			xfree(*comment_return);
-		return 0;
-	}
-	/* Read the rest of the private key. */
-	prv->d = BN_new();
-	buffer_get_bignum(&decrypted, prv->d);
-	prv->iqmp = BN_new();
-	buffer_get_bignum(&decrypted, prv->iqmp);	/* u */
-	/* in SSL and SSH p and q are exchanged */
-	prv->q = BN_new();
-	buffer_get_bignum(&decrypted, prv->q);		/* p */
-	prv->p = BN_new();
-	buffer_get_bignum(&decrypted, prv->p);		/* q */
-
-	ctx = BN_CTX_new();
-	aux = BN_new();
-
-	BN_sub(aux, prv->q, BN_value_one());
-	prv->dmq1 = BN_new();
-	BN_mod(prv->dmq1, prv->d, aux, ctx);
-
-	BN_sub(aux, prv->p, BN_value_one());
-	prv->dmp1 = BN_new();
-	BN_mod(prv->dmp1, prv->d, aux, ctx);
-
-	BN_clear_free(aux);
-	BN_CTX_free(ctx);
-
-	buffer_free(&decrypted);
-
-	return 1;
-}
-
-int
-load_private_key_dsa(int fd, const char *passphrase, Key *k, char **comment_return)
-{
-	DSA *dsa;
-	BIO *in;
-	FILE *fp;
-
-	in = BIO_new(BIO_s_file());
-	if (in == NULL) {
-		error("BIO_new failed");
-		return 0;
-	}
-	fp = fdopen(fd, "r");
-	if (fp == NULL) {
-		error("fdopen failed");
-		return 0;
-	}
-	BIO_set_fp(in, fp, BIO_NOCLOSE);
-	dsa = PEM_read_bio_DSAPrivateKey(in, NULL, NULL, (char *)passphrase);
-	if (dsa == NULL) {
-		debug("PEM_read_bio_DSAPrivateKey failed");
-	} else {
-		/* replace k->dsa with loaded key */
-		DSA_free(k->dsa);
-		k->dsa = dsa;
-	}
-	BIO_free(in);
-	fclose(fp);
-	if (comment_return)
-		*comment_return = xstrdup("dsa w/o comment");
-	debug("read DSA private key done");
-#ifdef DEBUG_DSS
-	DSA_print_fp(stderr, dsa, 8);
-#endif
-	return dsa != NULL ? 1 : 0;
-}
-
-int
-load_private_key(const char *filename, const char *passphrase, Key *key,
-    char **comment_return)
-{
-	int fd;
-	int ret = 0;
-	struct stat st;
-
-	fd = open(filename, O_RDONLY);
-	if (fd < 0)
-		return 0;
-
-	/* check owner and modes */
-	if (fstat(fd, &st) < 0 ||
-	    (st.st_uid != 0 && st.st_uid != getuid()) ||
-	    (st.st_mode & 077) != 0) {
-		close(fd);
-		error("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
-		error("@         WARNING: UNPROTECTED PRIVATE KEY FILE!          @");
-		error("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
-		error("Bad ownership or mode(0%3.3o) for '%s'.",
-		      st.st_mode & 0777, filename);
-		error("It is recommended that your private key files are NOT accessible by others.");
-		return 0;
-	}
-	switch (key->type) {
-	case KEY_RSA:
-		if (key->rsa->e != NULL) {
-			BN_clear_free(key->rsa->e);
-			key->rsa->e = NULL;
-		}
-		if (key->rsa->n != NULL) {
-			BN_clear_free(key->rsa->n);
-			key->rsa->n = NULL;
-		}
-		ret = load_private_key_rsa(fd, filename, passphrase,
-		     key->rsa, comment_return);
-		break;
-	case KEY_DSA:
-		ret = load_private_key_dsa(fd, passphrase, key, comment_return);
-	default:
-		break;
-	}
-	close(fd);
-	return ret;
-}