--- /dev/null
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * 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 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 acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS 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 AUTHOR OR 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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CIPHER_INTERNAL_H
+#define OPENSSL_HEADER_CIPHER_INTERNAL_H
+
+#include <openssl/base.h>
+
+#include <openssl/aead.h>
+#include <openssl/aes.h>
+
+#include "../../internal.h"
+#include "../modes/internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// EVP_CIPH_MODE_MASK contains the bits of |flags| that represent the mode.
+#define EVP_CIPH_MODE_MASK 0x3f
+
+// EVP_AEAD represents a specific AEAD algorithm.
+struct evp_aead_st {
+ uint8_t key_len;
+ uint8_t nonce_len;
+ uint8_t overhead;
+ uint8_t max_tag_len;
+ int seal_scatter_supports_extra_in;
+
+ // init initialises an |EVP_AEAD_CTX|. If this call returns zero then
+ // |cleanup| will not be called for that context.
+ int (*init)(EVP_AEAD_CTX *, const uint8_t *key, size_t key_len,
+ size_t tag_len);
+ int (*init_with_direction)(EVP_AEAD_CTX *, const uint8_t *key, size_t key_len,
+ size_t tag_len, enum evp_aead_direction_t dir);
+ void (*cleanup)(EVP_AEAD_CTX *);
+
+ int (*open)(const EVP_AEAD_CTX *ctx, uint8_t *out, size_t *out_len,
+ size_t max_out_len, const uint8_t *nonce, size_t nonce_len,
+ const uint8_t *in, size_t in_len, const uint8_t *ad,
+ size_t ad_len);
+
+ int (*seal_scatter)(const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+ size_t *out_tag_len, size_t max_out_tag_len,
+ const uint8_t *nonce, size_t nonce_len, const uint8_t *in,
+ size_t in_len, const uint8_t *extra_in,
+ size_t extra_in_len, const uint8_t *ad, size_t ad_len);
+
+ int (*open_gather)(const EVP_AEAD_CTX *ctx, uint8_t *out,
+ const uint8_t *nonce, size_t nonce_len, const uint8_t *in,
+ size_t in_len, const uint8_t *in_tag, size_t in_tag_len,
+ const uint8_t *ad, size_t ad_len);
+
+ int (*get_iv)(const EVP_AEAD_CTX *ctx, const uint8_t **out_iv,
+ size_t *out_len);
+
+ size_t (*tag_len)(const EVP_AEAD_CTX *ctx, size_t in_Len,
+ size_t extra_in_len);
+};
+
+// aes_ctr_set_key initialises |*aes_key| using |key_bytes| bytes from |key|,
+// where |key_bytes| must either be 16, 24 or 32. If not NULL, |*out_block| is
+// set to a function that encrypts single blocks. If not NULL, |*gcm_ctx| is
+// initialised to do GHASH with the given key. It returns a function for
+// optimised CTR-mode, or NULL if CTR-mode should be built using
+// |*out_block|.
+ctr128_f aes_ctr_set_key(AES_KEY *aes_key, GCM128_CONTEXT *gcm_ctx,
+ block128_f *out_block, const uint8_t *key,
+ size_t key_bytes);
+
+#if defined(__cplusplus)
+} // extern C
+#endif
+
+#endif // OPENSSL_HEADER_CIPHER_INTERNAL_H
git://repos.xcallymotion.com / motion2.git / blobdiff