Initial import

1 files changed, 299 insertions, 0 deletions

diff --git a/openssl/crypto/evp/p5_crpt2.c b/openssl/crypto/evp/p5_crpt2.c
new file mode 100644
index 00000000..334379f3
--- /dev/null
+++ b/openssl/crypto/evp/p5_crpt2.c
@@ -0,0 +1,299 @@
+/* p5_crpt2.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2006 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 <stdlib.h>
+#include "cryptlib.h"
+#if !defined(OPENSSL_NO_HMAC) && !defined(OPENSSL_NO_SHA)
+#include <openssl/x509.h>
+#include <openssl/evp.h>
+#include <openssl/hmac.h>
+
+/* set this to print out info about the keygen algorithm */
+/* #define DEBUG_PKCS5V2 */
+
+#ifdef DEBUG_PKCS5V2
+	static void h__dump (const unsigned char *p, int len);
+#endif
+
+/* This is an implementation of PKCS#5 v2.0 password based encryption key
+ * derivation function PBKDF2.
+ * SHA1 version verified against test vectors posted by Peter Gutmann
+ * <pgut001@cs.auckland.ac.nz> to the PKCS-TNG <pkcs-tng@rsa.com> mailing list.
+ */
+
+int PKCS5_PBKDF2_HMAC(const char *pass, int passlen,
+			   const unsigned char *salt, int saltlen, int iter,
+			   const EVP_MD *digest,
+			   int keylen, unsigned char *out)
+	{
+	unsigned char digtmp[EVP_MAX_MD_SIZE], *p, itmp[4];
+	int cplen, j, k, tkeylen, mdlen;
+	unsigned long i = 1;
+	HMAC_CTX hctx;
+
+	mdlen = EVP_MD_size(digest);
+	if (mdlen < 0)
+		return 0;
+
+	HMAC_CTX_init(&hctx);
+	p = out;
+	tkeylen = keylen;
+	if(!pass)
+		passlen = 0;
+	else if(passlen == -1)
+		passlen = strlen(pass);
+	while(tkeylen)
+		{
+		if(tkeylen > mdlen)
+			cplen = mdlen;
+		else
+			cplen = tkeylen;
+		/* We are unlikely to ever use more than 256 blocks (5120 bits!)
+		 * but just in case...
+		 */
+		itmp[0] = (unsigned char)((i >> 24) & 0xff);
+		itmp[1] = (unsigned char)((i >> 16) & 0xff);
+		itmp[2] = (unsigned char)((i >> 8) & 0xff);
+		itmp[3] = (unsigned char)(i & 0xff);
+		HMAC_Init_ex(&hctx, pass, passlen, digest, NULL);
+		HMAC_Update(&hctx, salt, saltlen);
+		HMAC_Update(&hctx, itmp, 4);
+		HMAC_Final(&hctx, digtmp, NULL);
+		memcpy(p, digtmp, cplen);
+		for(j = 1; j < iter; j++)
+			{
+			HMAC(digest, pass, passlen,
+				 digtmp, mdlen, digtmp, NULL);
+			for(k = 0; k < cplen; k++)
+				p[k] ^= digtmp[k];
+			}
+		tkeylen-= cplen;
+		i++;
+		p+= cplen;
+		}
+	HMAC_CTX_cleanup(&hctx);
+#ifdef DEBUG_PKCS5V2
+	fprintf(stderr, "Password:\n");
+	h__dump (pass, passlen);
+	fprintf(stderr, "Salt:\n");
+	h__dump (salt, saltlen);
+	fprintf(stderr, "Iteration count %d\n", iter);
+	fprintf(stderr, "Key:\n");
+	h__dump (out, keylen);
+#endif
+	return 1;
+	}
+
+int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen,
+			   const unsigned char *salt, int saltlen, int iter,
+			   int keylen, unsigned char *out)
+	{
+	return PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, iter, EVP_sha1(),
+					keylen, out);
+	}
+
+#ifdef DO_TEST
+main()
+{
+	unsigned char out[4];
+	unsigned char salt[] = {0x12, 0x34, 0x56, 0x78};
+	PKCS5_PBKDF2_HMAC_SHA1("password", -1, salt, 4, 5, 4, out);
+	fprintf(stderr, "Out %02X %02X %02X %02X\n",
+					 out[0], out[1], out[2], out[3]);
+}
+
+#endif
+
+/* Now the key derivation function itself. This is a bit evil because
+ * it has to check the ASN1 parameters are valid: and there are quite a
+ * few of them...
+ */
+
+int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
+                         ASN1_TYPE *param, const EVP_CIPHER *c, const EVP_MD *md,
+                         int en_de)
+{
+	unsigned char *salt, key[EVP_MAX_KEY_LENGTH];
+	const unsigned char *pbuf;
+	int saltlen, iter, plen;
+	unsigned int keylen;
+	PBE2PARAM *pbe2 = NULL;
+	const EVP_CIPHER *cipher;
+	PBKDF2PARAM *kdf = NULL;
+	const EVP_MD *prfmd;
+	int prf_nid, hmac_md_nid;
+
+	if (param == NULL || param->type != V_ASN1_SEQUENCE ||
+	    param->value.sequence == NULL) {
+		EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,EVP_R_DECODE_ERROR);
+		return 0;
+	}
+
+	pbuf = param->value.sequence->data;
+	plen = param->value.sequence->length;
+	if(!(pbe2 = d2i_PBE2PARAM(NULL, &pbuf, plen))) {
+		EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,EVP_R_DECODE_ERROR);
+		return 0;
+	}
+
+	/* See if we recognise the key derivation function */
+
+	if(OBJ_obj2nid(pbe2->keyfunc->algorithm) != NID_id_pbkdf2) {
+		EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,
+				EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION);
+		goto err;
+	}
+
+	/* lets see if we recognise the encryption algorithm.
+	 */
+
+	cipher = EVP_get_cipherbyobj(pbe2->encryption->algorithm);
+
+	if(!cipher) {
+		EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,
+						EVP_R_UNSUPPORTED_CIPHER);
+		goto err;
+	}
+
+	/* Fixup cipher based on AlgorithmIdentifier */
+	EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, en_de);
+	if(EVP_CIPHER_asn1_to_param(ctx, pbe2->encryption->parameter) < 0) {
+		EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,
+					EVP_R_CIPHER_PARAMETER_ERROR);
+		goto err;
+	}
+	keylen = EVP_CIPHER_CTX_key_length(ctx);
+	OPENSSL_assert(keylen <= sizeof key);
+
+	/* Now decode key derivation function */
+
+	if(!pbe2->keyfunc->parameter ||
+		 (pbe2->keyfunc->parameter->type != V_ASN1_SEQUENCE))
+		{
+		EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,EVP_R_DECODE_ERROR);
+		goto err;
+		}
+
+	pbuf = pbe2->keyfunc->parameter->value.sequence->data;
+	plen = pbe2->keyfunc->parameter->value.sequence->length;
+	if(!(kdf = d2i_PBKDF2PARAM(NULL, &pbuf, plen)) ) {
+		EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,EVP_R_DECODE_ERROR);
+		goto err;
+	}
+
+	PBE2PARAM_free(pbe2);
+	pbe2 = NULL;
+
+	/* Now check the parameters of the kdf */
+
+	if(kdf->keylength && (ASN1_INTEGER_get(kdf->keylength) != (int)keylen)){
+		EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,
+						EVP_R_UNSUPPORTED_KEYLENGTH);
+		goto err;
+	}
+
+	if (kdf->prf)
+		prf_nid = OBJ_obj2nid(kdf->prf->algorithm);
+	else
+		prf_nid = NID_hmacWithSHA1;
+
+	if (!EVP_PBE_find(EVP_PBE_TYPE_PRF, prf_nid, NULL, &hmac_md_nid, 0))
+		{
+		EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, EVP_R_UNSUPPORTED_PRF);
+		goto err;
+		}
+
+	prfmd = EVP_get_digestbynid(hmac_md_nid);
+	if (prfmd == NULL)
+		{
+		EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, EVP_R_UNSUPPORTED_PRF);
+		goto err;
+		}
+
+	if(kdf->salt->type != V_ASN1_OCTET_STRING) {
+		EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,
+						EVP_R_UNSUPPORTED_SALT_TYPE);
+		goto err;
+	}
+
+	/* it seems that its all OK */
+	salt = kdf->salt->value.octet_string->data;
+	saltlen = kdf->salt->value.octet_string->length;
+	iter = ASN1_INTEGER_get(kdf->iter);
+	if(!PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, iter, prfmd,
+						   keylen, key))
+		goto err;
+	EVP_CipherInit_ex(ctx, NULL, NULL, key, NULL, en_de);
+	OPENSSL_cleanse(key, keylen);
+	PBKDF2PARAM_free(kdf);
+	return 1;
+
+	err:
+	PBE2PARAM_free(pbe2);
+	PBKDF2PARAM_free(kdf);
+	return 0;
+}
+
+#ifdef DEBUG_PKCS5V2
+static void h__dump (const unsigned char *p, int len)
+{
+        for (; len --; p++) fprintf(stderr, "%02X ", *p);
+        fprintf(stderr, "\n");
+}
+#endif
+#endif