-/* p12_key.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 1999.
- */
-/* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project. 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.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS CONTRIBUTORS 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
+/*
+ * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/pkcs12.h>
-
+#include <openssl/bn.h>
/* Uncomment out this line to get debugging info about key generation */
-/*#define DEBUG_KEYGEN*/
-#ifdef DEBUG_KEYGEN
-#include <openssl/bio.h>
+/*
+ * #define OPENSSL_DEBUG_KEYGEN
+ */
+#ifdef OPENSSL_DEBUG_KEYGEN
+# include <openssl/bio.h>
extern BIO *bio_err;
-void h__dump (unsigned char *p, int len);
+void h__dump(unsigned char *p, int len);
#endif
/* PKCS12 compatible key/IV generation */
#ifndef min
-#define min(a,b) ((a) < (b) ? (a) : (b))
+# define min(a,b) ((a) < (b) ? (a) : (b))
#endif
-int PKCS12_key_gen_asc (const char *pass, int passlen, unsigned char *salt,
- int saltlen, int id, int iter, int n, unsigned char *out,
- const EVP_MD *md_type)
+int PKCS12_key_gen_asc(const char *pass, int passlen, unsigned char *salt,
+ int saltlen, int id, int iter, int n,
+ unsigned char *out, const EVP_MD *md_type)
{
- int ret;
- unsigned char *unipass;
- int uniplen;
- if (!asc2uni (pass, &unipass, &uniplen)) {
- PKCS12err(PKCS12_F_PKCS12_KEY_GEN_ASC,ERR_R_MALLOC_FAILURE);
- return 0;
- }
- ret = PKCS12_key_gen_uni (unipass, uniplen, salt, saltlen,
- id, iter, n, out, md_type);
- memset(unipass, 0, uniplen); /* Clear password from memory */
- Free(unipass);
- return ret;
+ int ret;
+ unsigned char *unipass;
+ int uniplen;
+
+ if (!pass) {
+ unipass = NULL;
+ uniplen = 0;
+ } else if (!OPENSSL_asc2uni(pass, passlen, &unipass, &uniplen)) {
+ PKCS12err(PKCS12_F_PKCS12_KEY_GEN_ASC, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ ret = PKCS12_key_gen_uni(unipass, uniplen, salt, saltlen,
+ id, iter, n, out, md_type);
+ if (ret <= 0)
+ return 0;
+ OPENSSL_clear_free(unipass, uniplen);
+ return ret;
+}
+
+int PKCS12_key_gen_utf8(const char *pass, int passlen, unsigned char *salt,
+ int saltlen, int id, int iter, int n,
+ unsigned char *out, const EVP_MD *md_type)
+{
+ int ret;
+ unsigned char *unipass;
+ int uniplen;
+
+ if (!pass) {
+ unipass = NULL;
+ uniplen = 0;
+ } else if (!OPENSSL_utf82uni(pass, passlen, &unipass, &uniplen)) {
+ PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UTF8, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ ret = PKCS12_key_gen_uni(unipass, uniplen, salt, saltlen,
+ id, iter, n, out, md_type);
+ if (ret <= 0)
+ return 0;
+ OPENSSL_clear_free(unipass, uniplen);
+ return ret;
}
-int PKCS12_key_gen_uni (unsigned char *pass, int passlen, unsigned char *salt,
- int saltlen, int id, int iter, int n, unsigned char *out,
- const EVP_MD *md_type)
+int PKCS12_key_gen_uni(unsigned char *pass, int passlen, unsigned char *salt,
+ int saltlen, int id, int iter, int n,
+ unsigned char *out, const EVP_MD *md_type)
{
- unsigned char *B, *D, *I, *p, *Ai;
- int Slen, Plen, Ilen;
- int i, j, u, v;
- BIGNUM *Ij, *Bpl1; /* These hold Ij and B + 1 */
- EVP_MD_CTX ctx;
-#ifdef DEBUG_KEYGEN
- unsigned char *tmpout = out;
- int tmpn = n;
- BIO_printf (bio_err, "KEYGEN DEBUG\n");
- BIO_printf (bio_err, "ID %d, ITER %d\n", id, iter);
- BIO_printf (bio_err, "Password (length %d):\n", passlen);
- h__dump (pass, passlen);
- BIO_printf (bio_err, "Salt (length %d):\n", saltlen);
- h__dump (salt, saltlen);
- BIO_printf (bio_err, "ID %d, ITER %d\n\n", id, iter);
+ unsigned char *B = NULL, *D = NULL, *I = NULL, *p = NULL, *Ai = NULL;
+ int Slen, Plen, Ilen;
+ int i, j, u, v;
+ int ret = 0;
+ EVP_MD_CTX *ctx = NULL;
+#ifdef OPENSSL_DEBUG_KEYGEN
+ unsigned char *tmpout = out;
+ int tmpn = n;
+#endif
+
+ ctx = EVP_MD_CTX_new();
+ if (ctx == NULL)
+ goto err;
+
+#ifdef OPENSSL_DEBUG_KEYGEN
+ fprintf(stderr, "KEYGEN DEBUG\n");
+ fprintf(stderr, "ID %d, ITER %d\n", id, iter);
+ fprintf(stderr, "Password (length %d):\n", passlen);
+ h__dump(pass, passlen);
+ fprintf(stderr, "Salt (length %d):\n", saltlen);
+ h__dump(salt, saltlen);
#endif
- v = EVP_MD_block_size (md_type);
- u = EVP_MD_size (md_type);
- D = Malloc (v);
- Ai = Malloc (u);
- B = Malloc (v + 1);
- Slen = v * ((saltlen+v-1)/v);
- Plen = v * ((passlen+v-1)/v);
- Ilen = Slen + Plen;
- I = Malloc (Ilen);
- Ij = BN_new();
- Bpl1 = BN_new();
- if (!D || !Ai || !B || !I || !Ij || !Bpl1) {
- PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI,ERR_R_MALLOC_FAILURE);
- return 0;
- }
- for (i = 0; i < v; i++) D[i] = id;
- p = I;
- for (i = 0; i < Slen; i++) *p++ = salt[i % saltlen];
- for (i = 0; i < Plen; i++) *p++ = pass[i % passlen];
- for (;;) {
- EVP_DigestInit (&ctx, md_type);
- EVP_DigestUpdate (&ctx, D, v);
- EVP_DigestUpdate (&ctx, I, Ilen);
- EVP_DigestFinal (&ctx, Ai, NULL);
- for (j = 1; j < iter; j++) {
- EVP_DigestInit (&ctx, md_type);
- EVP_DigestUpdate (&ctx, Ai, u);
- EVP_DigestFinal (&ctx, Ai, NULL);
- }
- memcpy (out, Ai, min (n, u));
- if (u >= n) {
- Free (Ai);
- Free (B);
- Free (D);
- Free (I);
- BN_free (Ij);
- BN_free (Bpl1);
-#ifdef DEBUG_KEYGEN
- BIO_printf (bio_err, "Output KEY (length %d)\n", tmpn);
- h__dump (tmpout, tmpn);
+ v = EVP_MD_block_size(md_type);
+ u = EVP_MD_size(md_type);
+ if (u < 0 || v <= 0)
+ goto err;
+ D = OPENSSL_malloc(v);
+ Ai = OPENSSL_malloc(u);
+ B = OPENSSL_malloc(v + 1);
+ Slen = v * ((saltlen + v - 1) / v);
+ if (passlen)
+ Plen = v * ((passlen + v - 1) / v);
+ else
+ Plen = 0;
+ Ilen = Slen + Plen;
+ I = OPENSSL_malloc(Ilen);
+ if (D == NULL || Ai == NULL || B == NULL || I == NULL)
+ goto err;
+ for (i = 0; i < v; i++)
+ D[i] = id;
+ p = I;
+ for (i = 0; i < Slen; i++)
+ *p++ = salt[i % saltlen];
+ for (i = 0; i < Plen; i++)
+ *p++ = pass[i % passlen];
+ for (;;) {
+ if (!EVP_DigestInit_ex(ctx, md_type, NULL)
+ || !EVP_DigestUpdate(ctx, D, v)
+ || !EVP_DigestUpdate(ctx, I, Ilen)
+ || !EVP_DigestFinal_ex(ctx, Ai, NULL))
+ goto err;
+ for (j = 1; j < iter; j++) {
+ if (!EVP_DigestInit_ex(ctx, md_type, NULL)
+ || !EVP_DigestUpdate(ctx, Ai, u)
+ || !EVP_DigestFinal_ex(ctx, Ai, NULL))
+ goto err;
+ }
+ memcpy(out, Ai, min(n, u));
+ if (u >= n) {
+#ifdef OPENSSL_DEBUG_KEYGEN
+ fprintf(stderr, "Output KEY (length %d)\n", tmpn);
+ h__dump(tmpout, tmpn);
#endif
- return 1;
- }
- n -= u;
- out += u;
- for (j = 0; j < v; j++) B[j] = Ai[j % u];
- /* Work out B + 1 first then can use B as tmp space */
- BN_bin2bn (B, v, Bpl1);
- BN_add_word (Bpl1, 1);
- for (j = 0; j < Ilen ; j+=v) {
- BN_bin2bn (I + j, v, Ij);
- BN_add (Ij, Ij, Bpl1);
- BN_bn2bin (Ij, B);
- /* If more than 2^(v*8) - 1 cut off MSB */
- if (BN_num_bytes (Ij) > v) {
- BN_bn2bin (Ij, B);
- memcpy (I + j, B + 1, v);
- } else BN_bn2bin (Ij, I + j);
- }
- }
+ ret = 1;
+ goto end;
+ }
+ n -= u;
+ out += u;
+ for (j = 0; j < v; j++)
+ B[j] = Ai[j % u];
+ for (j = 0; j < Ilen; j += v) {
+ int k;
+ unsigned char *Ij = I + j;
+ uint16_t c = 1;
+
+ /* Work out Ij = Ij + B + 1 */
+ for (k = v - 1; k >= 0; k--) {
+ c += Ij[k] + B[k];
+ Ij[k] = (unsigned char)c;
+ c >>= 8;
+ }
+ }
+ }
+
+ err:
+ PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI, ERR_R_MALLOC_FAILURE);
+
+ end:
+ OPENSSL_free(Ai);
+ OPENSSL_free(B);
+ OPENSSL_free(D);
+ OPENSSL_free(I);
+ EVP_MD_CTX_free(ctx);
+ return ret;
}
-#ifdef DEBUG_KEYGEN
-void h__dump (unsigned char *p, int len)
+
+#ifdef OPENSSL_DEBUG_KEYGEN
+void h__dump(unsigned char *p, int len)
{
- for (; len --; p++) BIO_printf (bio_err, "%02X", *p);
- BIO_printf (bio_err, "\n");
+ for (; len--; p++)
+ fprintf(stderr, "%02X", *p);
+ fprintf(stderr, "\n");
}
#endif
projects / openssl.git / blobdiff