1 files changed, 205 insertions, 0 deletions

diff --git a/src/lib/libcrypto/asn1/p5_pbev2.c b/src/lib/libcrypto/asn1/p5_pbev2.c
new file mode 100644
index 0000000000..c834a38ddf
--- /dev/null
+++ b/src/lib/libcrypto/asn1/p5_pbev2.c
@@ -0,0 +1,205 @@
+/* p5_pbev2.c */
+/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
+ * project 1999-2004.
+ */
+/* ====================================================================
+ * 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/asn1t.h>
+#include <openssl/x509.h>
+#include <openssl/rand.h>
+
+/* PKCS#5 v2.0 password based encryption structures */
+
+ASN1_SEQUENCE(PBE2PARAM) = {
+        ASN1_SIMPLE(PBE2PARAM, keyfunc, X509_ALGOR),
+        ASN1_SIMPLE(PBE2PARAM, encryption, X509_ALGOR)
+} ASN1_SEQUENCE_END(PBE2PARAM)
+
+IMPLEMENT_ASN1_FUNCTIONS(PBE2PARAM)
+
+ASN1_SEQUENCE(PBKDF2PARAM) = {
+        ASN1_SIMPLE(PBKDF2PARAM, salt, ASN1_ANY),
+        ASN1_SIMPLE(PBKDF2PARAM, iter, ASN1_INTEGER),
+        ASN1_OPT(PBKDF2PARAM, keylength, ASN1_INTEGER),
+        ASN1_OPT(PBKDF2PARAM, prf, X509_ALGOR)
+} ASN1_SEQUENCE_END(PBKDF2PARAM)
+
+IMPLEMENT_ASN1_FUNCTIONS(PBKDF2PARAM)
+
+/* Return an algorithm identifier for a PKCS#5 v2.0 PBE algorithm:
+ * yes I know this is horrible!
+ */
+
+X509_ALGOR *PKCS5_pbe2_set(const EVP_CIPHER *cipher, int iter,
+                                 unsigned char *salt, int saltlen)
+{
+        X509_ALGOR *scheme = NULL, *kalg = NULL, *ret = NULL;
+        int alg_nid;
+        EVP_CIPHER_CTX ctx;
+        unsigned char iv[EVP_MAX_IV_LENGTH];
+        PBKDF2PARAM *kdf = NULL;
+        PBE2PARAM *pbe2 = NULL;
+        ASN1_OCTET_STRING *osalt = NULL;
+        ASN1_OBJECT *obj;
+
+        alg_nid = EVP_CIPHER_type(cipher);
+        if(alg_nid == NID_undef) {
+                ASN1err(ASN1_F_PKCS5_PBE2_SET,
+                                ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
+                goto err;
+        }
+        obj = OBJ_nid2obj(alg_nid);
+
+        if(!(pbe2 = PBE2PARAM_new())) goto merr;
+
+        /* Setup the AlgorithmIdentifier for the encryption scheme */
+        scheme = pbe2->encryption;
+
+        scheme->algorithm = obj;
+        if(!(scheme->parameter = ASN1_TYPE_new())) goto merr;
+
+        /* Create random IV */
+        if (EVP_CIPHER_iv_length(cipher) &&
+                RAND_pseudo_bytes(iv, EVP_CIPHER_iv_length(cipher)) < 0)
+                goto err;
+
+        EVP_CIPHER_CTX_init(&ctx);
+
+        /* Dummy cipherinit to just setup the IV */
+        EVP_CipherInit_ex(&ctx, cipher, NULL, NULL, iv, 0);
+        if(EVP_CIPHER_param_to_asn1(&ctx, scheme->parameter) < 0) {
+                ASN1err(ASN1_F_PKCS5_PBE2_SET,
+                                        ASN1_R_ERROR_SETTING_CIPHER_PARAMS);
+                EVP_CIPHER_CTX_cleanup(&ctx);
+                goto err;
+        }
+        EVP_CIPHER_CTX_cleanup(&ctx);
+
+        if(!(kdf = PBKDF2PARAM_new())) goto merr;
+        if(!(osalt = M_ASN1_OCTET_STRING_new())) goto merr;
+
+        if (!saltlen) saltlen = PKCS5_SALT_LEN;
+        if (!(osalt->data = OPENSSL_malloc (saltlen))) goto merr;
+        osalt->length = saltlen;
+        if (salt) memcpy (osalt->data, salt, saltlen);
+        else if (RAND_pseudo_bytes (osalt->data, saltlen) < 0) goto merr;
+
+        if(iter <= 0) iter = PKCS5_DEFAULT_ITER;
+        if(!ASN1_INTEGER_set(kdf->iter, iter)) goto merr;
+
+        /* Now include salt in kdf structure */
+        kdf->salt->value.octet_string = osalt;
+        kdf->salt->type = V_ASN1_OCTET_STRING;
+        osalt = NULL;
+
+        /* If its RC2 then we'd better setup the key length */
+
+        if(alg_nid == NID_rc2_cbc) {
+                if(!(kdf->keylength = M_ASN1_INTEGER_new())) goto merr;
+                if(!ASN1_INTEGER_set (kdf->keylength,
+                                 EVP_CIPHER_key_length(cipher))) goto merr;
+        }
+
+        /* prf can stay NULL because we are using hmacWithSHA1 */
+
+        /* Now setup the PBE2PARAM keyfunc structure */
+
+        pbe2->keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2);
+
+        /* Encode PBKDF2PARAM into parameter of pbe2 */
+
+        if(!(pbe2->keyfunc->parameter = ASN1_TYPE_new())) goto merr;
+
+        if(!ASN1_pack_string_of(PBKDF2PARAM, kdf, i2d_PBKDF2PARAM,
+                         &pbe2->keyfunc->parameter->value.sequence)) goto merr;
+        pbe2->keyfunc->parameter->type = V_ASN1_SEQUENCE;
+
+        PBKDF2PARAM_free(kdf);
+        kdf = NULL;
+
+        /* Now set up top level AlgorithmIdentifier */
+
+        if(!(ret = X509_ALGOR_new())) goto merr;
+        if(!(ret->parameter = ASN1_TYPE_new())) goto merr;
+
+        ret->algorithm = OBJ_nid2obj(NID_pbes2);
+
+        /* Encode PBE2PARAM into parameter */
+
+        if(!ASN1_pack_string_of(PBE2PARAM, pbe2, i2d_PBE2PARAM,
+                                 &ret->parameter->value.sequence)) goto merr;
+        ret->parameter->type = V_ASN1_SEQUENCE;
+
+        PBE2PARAM_free(pbe2);
+        pbe2 = NULL;
+
+        return ret;
+
+        merr:
+        ASN1err(ASN1_F_PKCS5_PBE2_SET,ERR_R_MALLOC_FAILURE);
+
+        err:
+        PBE2PARAM_free(pbe2);
+        /* Note 'scheme' is freed as part of pbe2 */
+        M_ASN1_OCTET_STRING_free(osalt);
+        PBKDF2PARAM_free(kdf);
+        X509_ALGOR_free(kalg);
+        X509_ALGOR_free(ret);
+
+        return NULL;
+
+}