1 files changed, 294 insertions, 0 deletions
diff --git a/drivers/builtin_openssl2/crypto/cms/cms_enc.c b/drivers/builtin_openssl2/crypto/cms/cms_enc.c
new file mode 100644
index 0000000000..bebeaf29c7
--- /dev/null
+++ b/drivers/builtin_openssl2/crypto/cms/cms_enc.c
@@ -0,0 +1,294 @@
+/* crypto/cms/cms_enc.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 2008 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.
+ * ====================================================================
+ */
+
+#include "cryptlib.h"
+#include <openssl/asn1t.h>
+#include <openssl/pem.h>
+#include <openssl/x509v3.h>
+#include <openssl/err.h>
+#include <openssl/cms.h>
+#include <openssl/rand.h>
+#include "cms_lcl.h"
+
+/* CMS EncryptedData Utilities */
+
+DECLARE_ASN1_ITEM(CMS_EncryptedData)
+
+/* Return BIO based on EncryptedContentInfo and key */
+
+BIO *cms_EncryptedContent_init_bio(CMS_EncryptedContentInfo *ec)
+	{
+	BIO *b;
+	EVP_CIPHER_CTX *ctx;
+	const EVP_CIPHER *ciph;
+	X509_ALGOR *calg = ec->contentEncryptionAlgorithm;
+	unsigned char iv[EVP_MAX_IV_LENGTH], *piv = NULL;
+	unsigned char *tkey = NULL;
+	size_t tkeylen = 0;
+
+	int ok = 0;
+
+	int enc, keep_key = 0;
+
+	enc = ec->cipher ? 1 : 0;
+
+	b = BIO_new(BIO_f_cipher());
+	if (!b)
+		{
+		CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO,
+							ERR_R_MALLOC_FAILURE);
+		return NULL;
+		}
+
+	BIO_get_cipher_ctx(b, &ctx);
+
+	if (enc)
+		{
+		ciph = ec->cipher;
+		/* If not keeping key set cipher to NULL so subsequent calls
+		 * decrypt.
+		 */
+		if (ec->key)
+			ec->cipher = NULL;
+		}
+	else
+		{
+		ciph = EVP_get_cipherbyobj(calg->algorithm);
+
+		if (!ciph)
+			{
+			CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO,
+							CMS_R_UNKNOWN_CIPHER);
+			goto err;
+			}
+		}
+
+	if (EVP_CipherInit_ex(ctx, ciph, NULL, NULL, NULL, enc) <= 0)
+		{
+		CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO,
+				CMS_R_CIPHER_INITIALISATION_ERROR);
+		goto err;
+		}
+
+	if (enc)
+		{
+		int ivlen;
+		calg->algorithm = OBJ_nid2obj(EVP_CIPHER_CTX_type(ctx));
+		/* Generate a random IV if we need one */
+		ivlen = EVP_CIPHER_CTX_iv_length(ctx);
+		if (ivlen > 0)
+			{
+			if (RAND_pseudo_bytes(iv, ivlen) <= 0)
+				goto err;
+			piv = iv;
+			}
+		}
+	else if (EVP_CIPHER_asn1_to_param(ctx, calg->parameter) <= 0)
+		{
+		CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO,
+				CMS_R_CIPHER_PARAMETER_INITIALISATION_ERROR);
+		goto err;
+		}
+	tkeylen = EVP_CIPHER_CTX_key_length(ctx);
+	/* Generate random session key */
+	if (!enc || !ec->key)
+		{
+		tkey = OPENSSL_malloc(tkeylen);
+		if (!tkey)
+			{
+			CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO,
+							ERR_R_MALLOC_FAILURE);
+			goto err;
+			}
+		if (EVP_CIPHER_CTX_rand_key(ctx, tkey) <= 0)
+			goto err;
+		}
+
+	if (!ec->key)
+		{
+		ec->key = tkey;
+		ec->keylen = tkeylen;
+		tkey = NULL;
+		if (enc)
+			keep_key = 1;
+		else
+			ERR_clear_error();
+		
+		}
+
+	if (ec->keylen != tkeylen)
+		{
+		/* If necessary set key length */
+		if (EVP_CIPHER_CTX_set_key_length(ctx, ec->keylen) <= 0)
+			{
+			/* Only reveal failure if debugging so we don't
+			 * leak information which may be useful in MMA.
+			 */
+			if (enc || ec->debug)
+				{
+				CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO,
+						CMS_R_INVALID_KEY_LENGTH);
+				goto err;
+				}
+			else
+				{
+				/* Use random key */
+				OPENSSL_cleanse(ec->key, ec->keylen);
+				OPENSSL_free(ec->key);
+				ec->key = tkey;
+				ec->keylen = tkeylen;
+				tkey = NULL;
+				ERR_clear_error();
+				}
+			}
+		}
+
+	if (EVP_CipherInit_ex(ctx, NULL, NULL, ec->key, piv, enc) <= 0)
+		{
+		CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO,
+				CMS_R_CIPHER_INITIALISATION_ERROR);
+		goto err;
+		}
+
+	if (piv)
+		{
+		calg->parameter = ASN1_TYPE_new();
+		if (!calg->parameter)
+			{
+			CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO,
+							ERR_R_MALLOC_FAILURE);
+			goto err;
+			}
+		if (EVP_CIPHER_param_to_asn1(ctx, calg->parameter) <= 0)
+			{
+			CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO,
+				CMS_R_CIPHER_PARAMETER_INITIALISATION_ERROR);
+			goto err;
+			}
+		}
+	ok = 1;
+
+	err:
+	if (ec->key && !keep_key)
+		{
+		OPENSSL_cleanse(ec->key, ec->keylen);
+		OPENSSL_free(ec->key);
+		ec->key = NULL;
+		}
+	if (tkey)
+		{
+		OPENSSL_cleanse(tkey, tkeylen);
+		OPENSSL_free(tkey);
+		}
+	if (ok)
+		return b;
+	BIO_free(b);
+	return NULL;
+	}
+
+int cms_EncryptedContent_init(CMS_EncryptedContentInfo *ec, 
+				const EVP_CIPHER *cipher,
+				const unsigned char *key, size_t keylen)
+	{
+	ec->cipher = cipher;
+	if (key)
+		{
+		ec->key = OPENSSL_malloc(keylen);
+		if (!ec->key)
+			return 0;
+		memcpy(ec->key, key, keylen);
+		}
+	ec->keylen = keylen;
+	if (cipher)
+		ec->contentType = OBJ_nid2obj(NID_pkcs7_data);
+	return 1;
+	}
+
+int CMS_EncryptedData_set1_key(CMS_ContentInfo *cms, const EVP_CIPHER *ciph,
+				const unsigned char *key, size_t keylen)
+	{
+	CMS_EncryptedContentInfo *ec;
+	if (!key || !keylen)
+		{
+		CMSerr(CMS_F_CMS_ENCRYPTEDDATA_SET1_KEY, CMS_R_NO_KEY);
+		return 0;
+		}
+	if (ciph)
+		{
+		cms->d.encryptedData = M_ASN1_new_of(CMS_EncryptedData);
+		if (!cms->d.encryptedData)
+			{
+			CMSerr(CMS_F_CMS_ENCRYPTEDDATA_SET1_KEY,
+				ERR_R_MALLOC_FAILURE);
+			return 0;
+			}
+		cms->contentType = OBJ_nid2obj(NID_pkcs7_encrypted);
+		cms->d.encryptedData->version = 0;
+		}
+	else if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_encrypted)
+		{
+		CMSerr(CMS_F_CMS_ENCRYPTEDDATA_SET1_KEY,
+						CMS_R_NOT_ENCRYPTED_DATA);
+		return 0;
+		}
+	ec = cms->d.encryptedData->encryptedContentInfo;
+	return cms_EncryptedContent_init(ec, ciph, key, keylen);
+	}
+
+BIO *cms_EncryptedData_init_bio(CMS_ContentInfo *cms)
+	{
+	CMS_EncryptedData *enc = cms->d.encryptedData;
+	if (enc->encryptedContentInfo->cipher && enc->unprotectedAttrs)
+		enc->version = 2;
+	return cms_EncryptedContent_init_bio(enc->encryptedContentInfo);
+	}