- Merged very large OpenBSD source code reformat

 - OpenBSD CVS updates
   - [channels.c cipher.c compat.c log-client.c scp.c serverloop.c]
     [ssh.h sshd.8 sshd.c]
     syslog changes:
     * Unified Logmessage for all auth-types, for success and for failed
     * Standard connections get only ONE line in the LOG when level==LOG:
       Auth-attempts are logged only, if authentication is:
          a) successfull or
          b) with passwd or
          c) we had more than AUTH_FAIL_LOG failues
     * many log() became verbose()
     * old behaviour with level=VERBOSE
   - [readconf.c readconf.h ssh.1 ssh.h sshconnect.c sshd.c]
     tranfer s/key challenge/response data in SSH_SMSG_AUTH_TIS_CHALLENGE
     messages. allows use of s/key in windows (ttssh, securecrt) and
     ssh-1.2.27 clients without 'ssh -v', ok: niels@
   - [sshd.8]
     -V, for fallback to openssh in SSH2 compatibility mode
   - [sshd.c]
     fix sigchld race; cjc5@po.cwru.edu

1 files changed, 291 insertions, 306 deletions

diff --git a/authfile.c b/authfile.c
index 0e77edf9..35a05d38 100644
--- a/authfile.c
+++ b/authfile.c
@@ -1,21 +1,21 @@
 /*
-
-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.
-
-*/
+ * 
+ * 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.
+ * 
+ */
 
 #include "includes.h"
-RCSID("$Id: authfile.c,v 1.3 1999/11/13 02:07:45 damien Exp $");
+RCSID("$Id: authfile.c,v 1.4 1999/11/24 13:26:22 damien Exp $");
 
 #ifdef HAVE_OPENSSL
 #include <openssl/bn.h>
@@ -42,93 +42,93 @@ int
 save_private_key(const char *filename, const char *passphrase,
 		 RSA *key, const char *comment)
 {
-  Buffer buffer, encrypted;
-  char buf[100], *cp;
-  int f, 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, 1);
-  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);
-
-  /* Write to a file. */
-  f = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0600);
-  if (f < 0)
-    return 0;
-
-  if (write(f, buffer_ptr(&encrypted), buffer_len(&encrypted)) != 
-      buffer_len(&encrypted))
-    {
-      debug("Write to key file %.200s failed: %.100s", filename,
-	    strerror(errno));
-      buffer_free(&encrypted);
-      close(f);
-      remove(filename);
-      return 0;
-    }
-  close(f);
-  buffer_free(&encrypted);
-  return 1;
+	Buffer buffer, encrypted;
+	char buf[100], *cp;
+	int f, 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, 1);
+	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);
+
+	/* Write to a file. */
+	f = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0600);
+	if (f < 0)
+		return 0;
+
+	if (write(f, buffer_ptr(&encrypted), buffer_len(&encrypted)) !=
+	    buffer_len(&encrypted)) {
+		debug("Write to key file %.200s failed: %.100s", filename,
+		      strerror(errno));
+		buffer_free(&encrypted);
+		close(f);
+		remove(filename);
+		return 0;
+	}
+	close(f);
+	buffer_free(&encrypted);
+	return 1;
 }
 
 /* Loads the public part of the key file.  Returns 0 if an error
@@ -136,70 +136,65 @@ save_private_key(const char *filename, const char *passphrase,
    non-zero otherwise. */
 
 int
-load_public_key(const char *filename, RSA *pub, 
+load_public_key(const char *filename, RSA * pub,
 		char **comment_return)
 {
-  int f, i;
-  off_t len;
-  Buffer buffer;
-  char *cp;
-
-  /* Read data from the file into the buffer. */
-  f = open(filename, O_RDONLY);
-  if (f < 0)
-    return 0;
-
-  len = lseek(f, (off_t)0, SEEK_END);
-  lseek(f, (off_t)0, SEEK_SET);
-  
-  buffer_init(&buffer);
-  buffer_append_space(&buffer, &cp, len);
-
-  if (read(f, cp, (size_t)len) != (size_t)len)
-    {
-      debug("Read from key file %.200s failed: %.100s", filename, 
-	    strerror(errno));
-      buffer_free(&buffer);
-      close(f);
-      return 0;
-    }
-  close(f);
-
-  /* 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);
+	int f, i;
+	off_t len;
+	Buffer buffer;
+	char *cp;
+
+	/* Read data from the file into the buffer. */
+	f = open(filename, O_RDONLY);
+	if (f < 0)
+		return 0;
+
+	len = lseek(f, (off_t) 0, SEEK_END);
+	lseek(f, (off_t) 0, SEEK_SET);
+
+	buffer_init(&buffer);
+	buffer_append_space(&buffer, &cp, len);
+
+	if (read(f, cp, (size_t) len) != (size_t) len) {
+		debug("Read from key file %.200s failed: %.100s", filename,
+		      strerror(errno));
+		buffer_free(&buffer);
+		close(f);
+		return 0;
+	}
+	close(f);
+
+	/* 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;
+		}
+	/* 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);
+	pub->n = BN_new();
+	buffer_get_bignum(&buffer, pub->n);
+	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 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);
-  pub->n = BN_new();
-  buffer_get_bignum(&buffer, pub->n);
-  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;
+
+	return 1;
 }
 
 /* Loads the private key from the file.  Returns 0 if an error is encountered
@@ -208,149 +203,139 @@ load_public_key(const char *filename, RSA *pub,
 
 int
 load_private_key(const char *filename, const char *passphrase,
-		 RSA *prv, char **comment_return)
+		 RSA * prv, char **comment_return)
 {
-  int f, i, check1, check2, cipher_type;
-  off_t len;
-  Buffer buffer, decrypted;
-  char *cp;
-  CipherContext cipher;
-  BN_CTX *ctx;
-  BIGNUM *aux;
-  struct stat st;
-
-  /* Read the file into the buffer. */
-  f = open(filename, O_RDONLY);
-  if (f < 0)
-    return 0;
-
-  /* We assume we are called under uid of the owner of the file */
-  if (fstat(f, &st) < 0 ||
-      (st.st_uid != 0 && st.st_uid != getuid()) ||
-      (st.st_mode & 077) != 0) {
-    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;
-  }
-
-  len = lseek(f, (off_t)0, SEEK_END);
-  lseek(f, (off_t)0, SEEK_SET);
-  
-  buffer_init(&buffer);
-  buffer_append_space(&buffer, &cp, len);
-
-  if (read(f, cp, (size_t)len) != (size_t)len)
-    {
-      debug("Read from key file %.200s failed: %.100s", filename,
-	    strerror(errno));
-      buffer_free(&buffer);
-      close(f);
-      return 0;
-    }
-  close(f);
-
-  /* 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);
+	int f, i, check1, check2, cipher_type;
+	off_t len;
+	Buffer buffer, decrypted;
+	char *cp;
+	CipherContext cipher;
+	BN_CTX *ctx;
+	BIGNUM *aux;
+	struct stat st;
+
+	/* Read the file into the buffer. */
+	f = open(filename, O_RDONLY);
+	if (f < 0)
+		return 0;
+
+	/* We assume we are called under uid of the owner of the file */
+	if (fstat(f, &st) < 0 ||
+	    (st.st_uid != 0 && st.st_uid != getuid()) ||
+	    (st.st_mode & 077) != 0) {
+		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;
+	}
+	len = lseek(f, (off_t) 0, SEEK_END);
+	lseek(f, (off_t) 0, SEEK_SET);
+
+	buffer_init(&buffer);
+	buffer_append_space(&buffer, &cp, len);
+
+	if (read(f, cp, (size_t) len) != (size_t) len) {
+		debug("Read from key file %.200s failed: %.100s", filename,
+		      strerror(errno));
+		buffer_free(&buffer);
+		close(f);
+		return 0;
+	}
+	close(f);
+
+	/* 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_mask() | 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, 0);
+	cipher_decrypt(&cipher, (unsigned char *) cp,
+		       (unsigned char *) buffer_ptr(&buffer),
+		       buffer_len(&buffer));
+
 	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_mask() | 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, 0);
-  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);
-      BN_clear_free(prv->e);
-      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;
+
+	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);
+		BN_clear_free(prv->e);
+		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;
 }