Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/pkcs12/p12_key.c

-/* 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