--- /dev/null
+/* p12_key.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) 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).
+ *
+ */
+
+#include <stdio.h>
+#include "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>
+extern BIO *bio_err;
+void h__dump (unsigned char *p, int len);
+#endif
+
+/* PKCS12 compatible key/IV generation */
+#ifndef min
+#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 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;
+ if(unipass) {
+ OPENSSL_cleanse(unipass, uniplen); /* Clear password from memory */
+ OPENSSL_free(unipass);
+ }
+ 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)
+{
+ unsigned char *B, *D, *I, *p, *Ai;
+ int Slen, Plen, Ilen, Ijlen;
+ int i, j, u, v;
+ int ret = 0;
+ BIGNUM *Ij, *Bpl1; /* These hold Ij and B + 1 */
+ EVP_MD_CTX ctx;
+#ifdef DEBUG_KEYGEN
+ unsigned char *tmpout = out;
+ int tmpn = n;
+#endif
+
+#if 0
+ if (!pass) {
+ PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI,ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+#endif
+
+ EVP_MD_CTX_init(&ctx);
+#ifdef 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);
+ if (u < 0)
+ return 0;
+ 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);
+ Ij = BN_new();
+ Bpl1 = BN_new();
+ if (!D || !Ai || !B || !I || !Ij || !Bpl1)
+ 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 DEBUG_KEYGEN
+ fprintf(stderr, "Output KEY (length %d)\n", tmpn);
+ h__dump(tmpout, tmpn);
+#endif
+ ret = 1;
+ goto end;
+ }
+ 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 */
+ if (!BN_bin2bn (B, v, Bpl1))
+ goto err;
+ if (!BN_add_word (Bpl1, 1))
+ goto err;
+ for (j = 0; j < Ilen ; j+=v) {
+ if (!BN_bin2bn(I + j, v, Ij))
+ goto err;
+ if (!BN_add(Ij, Ij, Bpl1))
+ goto err;
+ if (!BN_bn2bin(Ij, B))
+ goto err;
+ Ijlen = BN_num_bytes (Ij);
+ /* If more than 2^(v*8) - 1 cut off MSB */
+ if (Ijlen > v) {
+ if (!BN_bn2bin (Ij, B))
+ goto err;
+ memcpy (I + j, B + 1, v);
+#ifndef PKCS12_BROKEN_KEYGEN
+ /* If less than v bytes pad with zeroes */
+ } else if (Ijlen < v) {
+ memset(I + j, 0, v - Ijlen);
+ if (!BN_bn2bin(Ij, I + j + v - Ijlen))
+ goto err;
+#endif
+ } else if (!BN_bn2bin (Ij, I + j))
+ goto err;
+ }
+ }
+
+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);
+ BN_free (Ij);
+ BN_free (Bpl1);
+ EVP_MD_CTX_cleanup(&ctx);
+ return ret;
+}
+#ifdef DEBUG_KEYGEN
+void h__dump (unsigned char *p, int len)
+{
+ for (; len --; p++) fprintf(stderr, "%02X", *p);
+ fprintf(stderr, "\n");
+}
+#endif
projects / cassiopeia.git / blobdiff