--- old/usr/src/cmd/ssh/libssh/common/key.c	Tue Aug 16 19:27:14 2016
+++ /dev/null	Tue Aug 16 19:26:53 2016
@@ -1,876 +0,0 @@
-/*
- * read_bignum():
- * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
- *
- * As far as I am concerned, the code I have written for this software
- * can be used freely for any purpose.  Any derived versions of this
- * software must be clearly marked as such, and if the derived work is
- * incompatible with the protocol description in the RFC file, it must be
- * called by a name other than "ssh" or "Secure Shell".
- *
- *
- * Copyright (c) 2000, 2001 Markus Friedl.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include "includes.h"
-RCSID("$OpenBSD: key.c,v 1.49 2002/09/09 14:54:14 markus Exp $");
-
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
-#include <openssl/evp.h>
-
-#include "xmalloc.h"
-#include "key.h"
-#include "rsa.h"
-#include "ssh-dss.h"
-#include "ssh-rsa.h"
-#include "uuencode.h"
-#include "buffer.h"
-#include "bufaux.h"
-#include "log.h"
-
-Key *
-key_new(int type)
-{
-	Key *k;
-	RSA *rsa;
-	DSA *dsa;
-	k = xmalloc(sizeof(*k));
-	k->type = type;
-	k->flags = 0;
-	k->dsa = NULL;
-	k->rsa = NULL;
-	switch (k->type) {
-	case KEY_RSA1:
-	case KEY_RSA:
-		if ((rsa = RSA_new()) == NULL)
-			fatal("key_new: RSA_new failed");
-		if ((rsa->n = BN_new()) == NULL)
-			fatal("key_new: BN_new failed");
-		if ((rsa->e = BN_new()) == NULL)
-			fatal("key_new: BN_new failed");
-		k->rsa = rsa;
-		break;
-	case KEY_DSA:
-		if ((dsa = DSA_new()) == NULL)
-			fatal("key_new: DSA_new failed");
-		if ((dsa->p = BN_new()) == NULL)
-			fatal("key_new: BN_new failed");
-		if ((dsa->q = BN_new()) == NULL)
-			fatal("key_new: BN_new failed");
-		if ((dsa->g = BN_new()) == NULL)
-			fatal("key_new: BN_new failed");
-		if ((dsa->pub_key = BN_new()) == NULL)
-			fatal("key_new: BN_new failed");
-		k->dsa = dsa;
-		break;
-	case KEY_UNSPEC:
-		break;
-	default:
-		fatal("key_new: bad key type %d", k->type);
-		break;
-	}
-	return k;
-}
-
-Key *
-key_new_private(int type)
-{
-	Key *k = key_new(type);
-	switch (k->type) {
-	case KEY_RSA1:
-	case KEY_RSA:
-		if ((k->rsa->d = BN_new()) == NULL)
-			fatal("key_new_private: BN_new failed");
-		if ((k->rsa->iqmp = BN_new()) == NULL)
-			fatal("key_new_private: BN_new failed");
-		if ((k->rsa->q = BN_new()) == NULL)
-			fatal("key_new_private: BN_new failed");
-		if ((k->rsa->p = BN_new()) == NULL)
-			fatal("key_new_private: BN_new failed");
-		if ((k->rsa->dmq1 = BN_new()) == NULL)
-			fatal("key_new_private: BN_new failed");
-		if ((k->rsa->dmp1 = BN_new()) == NULL)
-			fatal("key_new_private: BN_new failed");
-		break;
-	case KEY_DSA:
-		if ((k->dsa->priv_key = BN_new()) == NULL)
-			fatal("key_new_private: BN_new failed");
-		break;
-	case KEY_UNSPEC:
-		break;
-	default:
-		break;
-	}
-	return k;
-}
-
-void
-key_free(Key *k)
-{
-	switch (k->type) {
-	case KEY_RSA1:
-	case KEY_RSA:
-		if (k->rsa != NULL)
-			RSA_free(k->rsa);
-		k->rsa = NULL;
-		break;
-	case KEY_DSA:
-		if (k->dsa != NULL)
-			DSA_free(k->dsa);
-		k->dsa = NULL;
-		break;
-	case KEY_UNSPEC:
-		break;
-	default:
-		fatal("key_free: bad key type %d", k->type);
-		break;
-	}
-	xfree(k);
-}
-int
-key_equal(const Key *a, const Key *b)
-{
-	if (a == NULL || b == NULL || a->type != b->type)
-		return 0;
-	switch (a->type) {
-	case KEY_RSA1:
-	case KEY_RSA:
-		return a->rsa != NULL && b->rsa != NULL &&
-		    BN_cmp(a->rsa->e, b->rsa->e) == 0 &&
-		    BN_cmp(a->rsa->n, b->rsa->n) == 0;
-		break;
-	case KEY_DSA:
-		return a->dsa != NULL && b->dsa != NULL &&
-		    BN_cmp(a->dsa->p, b->dsa->p) == 0 &&
-		    BN_cmp(a->dsa->q, b->dsa->q) == 0 &&
-		    BN_cmp(a->dsa->g, b->dsa->g) == 0 &&
-		    BN_cmp(a->dsa->pub_key, b->dsa->pub_key) == 0;
-		break;
-	default:
-		fatal("key_equal: bad key type %d", a->type);
-		break;
-	}
-	return 0;
-}
-
-static u_char *
-key_fingerprint_raw(Key *k, enum fp_type dgst_type, u_int *dgst_raw_length)
-{
-	const EVP_MD *md = NULL;
-	EVP_MD_CTX ctx;
-	u_char *blob = NULL;
-	u_char *retval = NULL;
-	u_int len = 0;
-	int nlen, elen;
-
-	*dgst_raw_length = 0;
-
-	switch (dgst_type) {
-	case SSH_FP_MD5:
-		md = EVP_md5();
-		break;
-	case SSH_FP_SHA1:
-		md = EVP_sha1();
-		break;
-	default:
-		fatal("key_fingerprint_raw: bad digest type %d",
-		    dgst_type);
-	}
-	switch (k->type) {
-	case KEY_RSA1:
-		nlen = BN_num_bytes(k->rsa->n);
-		elen = BN_num_bytes(k->rsa->e);
-		len = nlen + elen;
-		blob = xmalloc(len);
-		BN_bn2bin(k->rsa->n, blob);
-		BN_bn2bin(k->rsa->e, blob + nlen);
-		break;
-	case KEY_DSA:
-	case KEY_RSA:
-		key_to_blob(k, &blob, &len);
-		break;
-	case KEY_UNSPEC:
-		return retval;
-		break;
-	default:
-		fatal("key_fingerprint_raw: bad key type %d", k->type);
-		break;
-	}
-	if (blob != NULL) {
-		retval = xmalloc(EVP_MAX_MD_SIZE);
-		EVP_DigestInit(&ctx, md);
-		EVP_DigestUpdate(&ctx, blob, len);
-		EVP_DigestFinal(&ctx, retval, dgst_raw_length);
-		memset(blob, 0, len);
-		xfree(blob);
-	} else {
-		fatal("key_fingerprint_raw: blob is null");
-	}
-	return retval;
-}
-
-static char *
-key_fingerprint_hex(u_char *dgst_raw, u_int dgst_raw_len)
-{
-	char *retval;
-	int i;
-
-	retval = xmalloc(dgst_raw_len * 3 + 1);
-	retval[0] = '\0';
-	for (i = 0; i < dgst_raw_len; i++) {
-		char hex[4];
-		snprintf(hex, sizeof(hex), "%02x:", dgst_raw[i]);
-		strlcat(retval, hex, dgst_raw_len * 3);
-	}
-	retval[(dgst_raw_len * 3) - 1] = '\0';
-	return retval;
-}
-
-static char *
-key_fingerprint_bubblebabble(u_char *dgst_raw, u_int dgst_raw_len)
-{
-	char vowels[] = { 'a', 'e', 'i', 'o', 'u', 'y' };
-	char consonants[] = { 'b', 'c', 'd', 'f', 'g', 'h', 'k', 'l', 'm',
-	    'n', 'p', 'r', 's', 't', 'v', 'z', 'x' };
-	u_int i, j = 0, rounds, seed = 1;
-	char *retval;
-
-	rounds = (dgst_raw_len / 2) + 1;
-	retval = xmalloc(sizeof(char) * (rounds*6));
-	retval[j++] = 'x';
-	for (i = 0; i < rounds; i++) {
-		u_int idx0, idx1, idx2, idx3, idx4;
-		if ((i + 1 < rounds) || (dgst_raw_len % 2 != 0)) {
-			idx0 = (((((u_int)(dgst_raw[2 * i])) >> 6) & 3) +
-			    seed) % 6;
-			idx1 = (((u_int)(dgst_raw[2 * i])) >> 2) & 15;
-			idx2 = ((((u_int)(dgst_raw[2 * i])) & 3) +
-			    (seed / 6)) % 6;
-			retval[j++] = vowels[idx0];
-			retval[j++] = consonants[idx1];
-			retval[j++] = vowels[idx2];
-			if ((i + 1) < rounds) {
-				idx3 = (((u_int)(dgst_raw[(2 * i) + 1])) >> 4) & 15;
-				idx4 = (((u_int)(dgst_raw[(2 * i) + 1]))) & 15;
-				retval[j++] = consonants[idx3];
-				retval[j++] = '-';
-				retval[j++] = consonants[idx4];
-				seed = ((seed * 5) +
-				    ((((u_int)(dgst_raw[2 * i])) * 7) +
-				    ((u_int)(dgst_raw[(2 * i) + 1])))) % 36;
-			}
-		} else {
-			idx0 = seed % 6;
-			idx1 = 16;
-			idx2 = seed / 6;
-			retval[j++] = vowels[idx0];
-			retval[j++] = consonants[idx1];
-			retval[j++] = vowels[idx2];
-		}
-	}
-	retval[j++] = 'x';
-	retval[j++] = '\0';
-	return retval;
-}
-
-char *
-key_fingerprint(Key *k, enum fp_type dgst_type, enum fp_rep dgst_rep)
-{
-	char *retval = NULL;
-	u_char *dgst_raw;
-	u_int dgst_raw_len;
-
-	dgst_raw = key_fingerprint_raw(k, dgst_type, &dgst_raw_len);
-	if (!dgst_raw)
-		fatal("key_fingerprint: null from key_fingerprint_raw()");
-	switch (dgst_rep) {
-	case SSH_FP_HEX:
-		retval = key_fingerprint_hex(dgst_raw, dgst_raw_len);
-		break;
-	case SSH_FP_BUBBLEBABBLE:
-		retval = key_fingerprint_bubblebabble(dgst_raw, dgst_raw_len);
-		break;
-	default:
-		fatal("key_fingerprint_ex: bad digest representation %d",
-		    dgst_rep);
-		break;
-	}
-	memset(dgst_raw, 0, dgst_raw_len);
-	xfree(dgst_raw);
-	return retval;
-}
-
-/*
- * Reads a multiple-precision integer in decimal from the buffer, and advances
- * the pointer.  The integer must already be initialized.  This function is
- * permitted to modify the buffer.  This leaves *cpp to point just beyond the
- * last processed (and maybe modified) character.  Note that this may modify
- * the buffer containing the number.
- */
-static int
-read_bignum(char **cpp, BIGNUM * value)
-{
-	char *cp = *cpp;
-	int old;
-
-	/* Skip any leading whitespace. */
-	for (; *cp == ' ' || *cp == '\t'; cp++)
-		;
-
-	/* Check that it begins with a decimal digit. */
-	if (*cp < '0' || *cp > '9')
-		return 0;
-
-	/* Save starting position. */
-	*cpp = cp;
-
-	/* Move forward until all decimal digits skipped. */
-	for (; *cp >= '0' && *cp <= '9'; cp++)
-		;
-
-	/* Save the old terminating character, and replace it by \0. */
-	old = *cp;
-	*cp = 0;
-
-	/* Parse the number. */
-	if (BN_dec2bn(&value, *cpp) == 0)
-		return 0;
-
-	/* Restore old terminating character. */
-	*cp = old;
-
-	/* Move beyond the number and return success. */
-	*cpp = cp;
-	return 1;
-}
-
-static int
-write_bignum(FILE *f, BIGNUM *num)
-{
-	char *buf = BN_bn2dec(num);
-	if (buf == NULL) {
-		error("write_bignum: BN_bn2dec() failed");
-		return 0;
-	}
-	fprintf(f, " %s", buf);
-	OPENSSL_free(buf);
-	return 1;
-}
-
-/* returns 1 ok, -1 error */
-int
-key_read(Key *ret, char **cpp)
-{
-	Key *k;
-	int success = -1;
-	char *cp, *space;
-	int len, n, type;
-	u_int bits;
-	u_char *blob;
-
-	cp = *cpp;
-
-	switch (ret->type) {
-	case KEY_RSA1:
-		/* Get number of bits. */
-		if (*cp < '0' || *cp > '9')
-			return -1;	/* Bad bit count... */
-		for (bits = 0; *cp >= '0' && *cp <= '9'; cp++)
-			bits = 10 * bits + *cp - '0';
-		if (bits == 0)
-			return -1;
-		*cpp = cp;
-		/* Get public exponent, public modulus. */
-		if (!read_bignum(cpp, ret->rsa->e))
-			return -1;
-		if (!read_bignum(cpp, ret->rsa->n))
-			return -1;
-		success = 1;
-		break;
-	case KEY_UNSPEC:
-	case KEY_RSA:
-	case KEY_DSA:
-		space = strchr(cp, ' ');
-		if (space == NULL) {
-			debug3("key_read: no space");
-			return -1;
-		}
-		*space = '\0';
-		type = key_type_from_name(cp);
-		*space = ' ';
-		if (type == KEY_UNSPEC) {
-			debug3("key_read: no key found");
-			return -1;
-		}
-		cp = space+1;
-		if (*cp == '\0') {
-			debug3("key_read: short string");
-			return -1;
-		}
-		if (ret->type == KEY_UNSPEC) {
-			ret->type = type;
-		} else if (ret->type != type) {
-			/* is a key, but different type */
-			debug3("key_read: type mismatch");
-			return -1;
-		}
-		len = 2*strlen(cp);
-		blob = xmalloc(len);
-		n = uudecode(cp, blob, len);
-		if (n < 0) {
-			error("key_read: uudecode %s failed", cp);
-			xfree(blob);
-			return -1;
-		}
-		k = key_from_blob(blob, n);
-		xfree(blob);
-		if (k == NULL) {
-			error("key_read: key_from_blob %s failed", cp);
-			return -1;
-		}
-		if (k->type != type) {
-			error("key_read: type mismatch: encoding error");
-			key_free(k);
-			return -1;
-		}
-/*XXXX*/
-		if (ret->type == KEY_RSA) {
-			if (ret->rsa != NULL)
-				RSA_free(ret->rsa);
-			ret->rsa = k->rsa;
-			k->rsa = NULL;
-			success = 1;
-#ifdef DEBUG_PK
-			RSA_print_fp(stderr, ret->rsa, 8);
-#endif
-		} else {
-			if (ret->dsa != NULL)
-				DSA_free(ret->dsa);
-			ret->dsa = k->dsa;
-			k->dsa = NULL;
-			success = 1;
-#ifdef DEBUG_PK
-			DSA_print_fp(stderr, ret->dsa, 8);
-#endif
-		}
-/*XXXX*/
-		key_free(k);
-		if (success != 1)
-			break;
-		/* advance cp: skip whitespace and data */
-		while (*cp == ' ' || *cp == '\t')
-			cp++;
-		while (*cp != '\0' && *cp != ' ' && *cp != '\t')
-			cp++;
-		*cpp = cp;
-		break;
-	default:
-		fatal("key_read: bad key type: %d", ret->type);
-		break;
-	}
-	return success;
-}
-
-int
-key_write(const Key *key, FILE *f)
-{
-	int n, success = 0;
-	u_int len, bits = 0;
-	u_char *blob;
-	char *uu;
-
-	if (key->type == KEY_RSA1 && key->rsa != NULL) {
-		/* size of modulus 'n' */
-		bits = BN_num_bits(key->rsa->n);
-		fprintf(f, "%u", bits);
-		if (write_bignum(f, key->rsa->e) &&
-		    write_bignum(f, key->rsa->n)) {
-			success = 1;
-		} else {
-			error("key_write: failed for RSA key");
-		}
-	} else if ((key->type == KEY_DSA && key->dsa != NULL) ||
-	    (key->type == KEY_RSA && key->rsa != NULL)) {
-		key_to_blob(key, &blob, &len);
-		uu = xmalloc(2*len);
-		n = uuencode(blob, len, uu, 2*len);
-		if (n > 0) {
-			fprintf(f, "%s %s", key_ssh_name(key), uu);
-			success = 1;
-		}
-		xfree(blob);
-		xfree(uu);
-	}
-	return success;
-}
-
-char *
-key_type(Key *k)
-{
-	switch (k->type) {
-	case KEY_RSA1:
-		return "RSA1";
-		break;
-	case KEY_RSA:
-		return "RSA";
-		break;
-	case KEY_DSA:
-		return "DSA";
-		break;
-	}
-	return "unknown";
-}
-
-char *
-key_ssh_name(const Key *k)
-{
-	switch (k->type) {
-	case KEY_RSA:
-		return "ssh-rsa";
-		break;
-	case KEY_DSA:
-		return "ssh-dss";
-		break;
-	}
-	return "ssh-unknown";
-}
-
-u_int
-key_size(Key *k)
-{
-	switch (k->type) {
-	case KEY_RSA1:
-	case KEY_RSA:
-		return BN_num_bits(k->rsa->n);
-		break;
-	case KEY_DSA:
-		return BN_num_bits(k->dsa->p);
-		break;
-	}
-	return 0;
-}
-
-static RSA *
-rsa_generate_private_key(u_int bits)
-{
-	RSA *private;
-	private = RSA_generate_key(bits, 35, NULL, NULL);
-	if (private == NULL)
-		fatal("rsa_generate_private_key: key generation failed.");
-	return private;
-}
-
-static DSA*
-dsa_generate_private_key(u_int bits)
-{
-	DSA *private = DSA_generate_parameters(bits, NULL, 0, NULL, NULL, NULL, NULL);
-	if (private == NULL)
-		fatal("dsa_generate_private_key: DSA_generate_parameters failed");
-	if (!DSA_generate_key(private))
-		fatal("dsa_generate_private_key: DSA_generate_key failed.");
-	if (private == NULL)
-		fatal("dsa_generate_private_key: NULL.");
-	return private;
-}
-
-Key *
-key_generate(int type, u_int bits)
-{
-	Key *k = key_new(KEY_UNSPEC);
-	switch (type) {
-	case KEY_DSA:
-		k->dsa = dsa_generate_private_key(bits);
-		break;
-	case KEY_RSA:
-	case KEY_RSA1:
-		k->rsa = rsa_generate_private_key(bits);
-		break;
-	default:
-		fatal("key_generate: unknown type %d", type);
-	}
-	k->type = type;
-	return k;
-}
-
-Key *
-key_from_private(Key *k)
-{
-	Key *n = NULL;
-	switch (k->type) {
-	case KEY_DSA:
-		n = key_new(k->type);
-		BN_copy(n->dsa->p, k->dsa->p);
-		BN_copy(n->dsa->q, k->dsa->q);
-		BN_copy(n->dsa->g, k->dsa->g);
-		BN_copy(n->dsa->pub_key, k->dsa->pub_key);
-		break;
-	case KEY_RSA:
-	case KEY_RSA1:
-		n = key_new(k->type);
-		BN_copy(n->rsa->n, k->rsa->n);
-		BN_copy(n->rsa->e, k->rsa->e);
-		break;
-	default:
-		fatal("key_from_private: unknown type %d", k->type);
-		break;
-	}
-	return n;
-}
-
-int
-key_type_from_name(char *name)
-{
-	if (strcmp(name, "rsa1") == 0) {
-		return KEY_RSA1;
-	} else if (strcmp(name, "rsa") == 0) {
-		return KEY_RSA;
-	} else if (strcmp(name, "dsa") == 0) {
-		return KEY_DSA;
-	} else if (strcmp(name, "ssh-rsa") == 0) {
-		return KEY_RSA;
-	} else if (strcmp(name, "ssh-dss") == 0) {
-		return KEY_DSA;
-	} else if (strcmp(name, "null") == 0){
-		return KEY_NULL;
-	}
-	debug2("key_type_from_name: unknown key type '%s'", name);
-	return KEY_UNSPEC;
-}
-
-int
-key_names_valid2(const char *names)
-{
-	char *s, *cp, *p;
-
-	if (names == NULL || strcmp(names, "") == 0)
-		return 0;
-	s = cp = xstrdup(names);
-	for ((p = strsep(&cp, ",")); p && *p != '\0';
-	    (p = strsep(&cp, ","))) {
-		switch (key_type_from_name(p)) {
-		case KEY_RSA1:
-		case KEY_UNSPEC:
-			xfree(s);
-			return 0;
-		}
-	}
-	debug3("key names ok: [%s]", names);
-	xfree(s);
-	return 1;
-}
-
-Key *
-key_from_blob(u_char *blob, int blen)
-{
-	Buffer b;
-	char *ktype;
-	int rlen, type;
-	Key *key = NULL;
-
-#ifdef DEBUG_PK
-	dump_base64(stderr, blob, blen);
-#endif
-	buffer_init(&b);
-	buffer_append(&b, blob, blen);
-	if ((ktype = buffer_get_string_ret(&b, NULL)) == NULL) {
-		error("key_from_blob: can't read key type");
-		goto out;
-	}
-
-	type = key_type_from_name(ktype);
-
-	switch (type) {
-	case KEY_RSA:
-		key = key_new(type);
-		if (buffer_get_bignum2_ret(&b, key->rsa->e) == -1 ||
-		    buffer_get_bignum2_ret(&b, key->rsa->n) == -1) {
-			error("key_from_blob: can't read rsa key");
-			key_free(key);
-			key = NULL;
-			goto out;
-		}
-#ifdef DEBUG_PK
-		RSA_print_fp(stderr, key->rsa, 8);
-#endif
-		break;
-	case KEY_DSA:
-		key = key_new(type);
-		if (buffer_get_bignum2_ret(&b, key->dsa->p) == -1 ||
-		    buffer_get_bignum2_ret(&b, key->dsa->q) == -1 ||
-		    buffer_get_bignum2_ret(&b, key->dsa->g) == -1 ||
-		    buffer_get_bignum2_ret(&b, key->dsa->pub_key) == -1) {
-			error("key_from_blob: can't read dsa key");
-			key_free(key);
-			key = NULL;
-			goto out;
-		}
-#ifdef DEBUG_PK
-		DSA_print_fp(stderr, key->dsa, 8);
-#endif
-		break;
-	case KEY_UNSPEC:
-		key = key_new(type);
-		break;
-	default:
-		error("key_from_blob: cannot handle type %s", ktype);
-		goto out;
-	}
-	rlen = buffer_len(&b);
-	if (key != NULL && rlen != 0)
-		error("key_from_blob: remaining bytes in key blob %d", rlen);
- out:
-	if (ktype != NULL)
-		xfree(ktype);
-	buffer_free(&b);
-	return key;
-}
-
-int
-key_to_blob(const Key *key, u_char **blobp, u_int *lenp)
-{
-	Buffer b;
-	int len;
-
-	if (key == NULL) {
-		error("key_to_blob: key == NULL");
-		return 0;
-	}
-	buffer_init(&b);
-	switch (key->type) {
-	case KEY_DSA:
-		buffer_put_cstring(&b, key_ssh_name(key));
-		buffer_put_bignum2(&b, key->dsa->p);
-		buffer_put_bignum2(&b, key->dsa->q);
-		buffer_put_bignum2(&b, key->dsa->g);
-		buffer_put_bignum2(&b, key->dsa->pub_key);
-		break;
-	case KEY_RSA:
-		buffer_put_cstring(&b, key_ssh_name(key));
-		buffer_put_bignum2(&b, key->rsa->e);
-		buffer_put_bignum2(&b, key->rsa->n);
-		break;
-	default:
-		error("key_to_blob: unsupported key type %d", key->type);
-		buffer_free(&b);
-		return 0;
-	}
-	len = buffer_len(&b);
-	if (lenp != NULL)
-		*lenp = len;
-	if (blobp != NULL) {
-		*blobp = xmalloc(len);
-		memcpy(*blobp, buffer_ptr(&b), len);
-	}
-	memset(buffer_ptr(&b), 0, len);
-	buffer_free(&b);
-	return len;
-}
-
-int
-key_sign(
-    Key *key,
-    u_char **sigp, u_int *lenp,
-    u_char *data, u_int datalen)
-{
-	switch (key->type) {
-	case KEY_DSA:
-		return ssh_dss_sign(key, sigp, lenp, data, datalen);
-		break;
-	case KEY_RSA:
-		return ssh_rsa_sign(key, sigp, lenp, data, datalen);
-		break;
-	default:
-		error("key_sign: illegal key type %d", key->type);
-		return -1;
-		break;
-	}
-}
-
-/*
- * key_verify returns 1 for a correct signature, 0 for an incorrect signature
- * and -1 on error.
- */
-int
-key_verify(
-    Key *key,
-    u_char *signature, u_int signaturelen,
-    u_char *data, u_int datalen)
-{
-	if (signaturelen == 0)
-		return -1;
-
-	switch (key->type) {
-	case KEY_DSA:
-		return ssh_dss_verify(key, signature, signaturelen, data, datalen);
-		break;
-	case KEY_RSA:
-		return ssh_rsa_verify(key, signature, signaturelen, data, datalen);
-		break;
-	default:
-		error("key_verify: illegal key type %d", key->type);
-		return -1;
-		break;
-	}
-}
-
-/* Converts a private to a public key */
-Key *
-key_demote(Key *k)
-{
-	Key *pk;
-
-	pk = xmalloc(sizeof(*pk));
-	pk->type = k->type;
-	pk->flags = k->flags;
-	pk->dsa = NULL;
-	pk->rsa = NULL;
-
-	switch (k->type) {
-	case KEY_RSA1:
-	case KEY_RSA:
-		if ((pk->rsa = RSA_new()) == NULL)
-			fatal("key_demote: RSA_new failed");
-		if ((pk->rsa->e = BN_dup(k->rsa->e)) == NULL)
-			fatal("key_demote: BN_dup failed");
-		if ((pk->rsa->n = BN_dup(k->rsa->n)) == NULL)
-			fatal("key_demote: BN_dup failed");
-		break;
-	case KEY_DSA:
-		if ((pk->dsa = DSA_new()) == NULL)
-			fatal("key_demote: DSA_new failed");
-		if ((pk->dsa->p = BN_dup(k->dsa->p)) == NULL)
-			fatal("key_demote: BN_dup failed");
-		if ((pk->dsa->q = BN_dup(k->dsa->q)) == NULL)
-			fatal("key_demote: BN_dup failed");
-		if ((pk->dsa->g = BN_dup(k->dsa->g)) == NULL)
-			fatal("key_demote: BN_dup failed");
-		if ((pk->dsa->pub_key = BN_dup(k->dsa->pub_key)) == NULL)
-			fatal("key_demote: BN_dup failed");
-		break;
-	default:
-		fatal("key_free: bad key type %d", k->type);
-		break;
-	}
-
-	return (pk);
-}
