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Diffstat (limited to 'src/crypto/digest/internal.h')
| -rw-r--r-- | src/crypto/digest/internal.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/crypto/digest/internal.h b/src/crypto/digest/internal.h new file mode 100644 index 0000000..94dbfaa --- /dev/null +++ b/src/crypto/digest/internal.h @@ -0,0 +1,117 @@ +/* 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_DIGEST_INTERNAL_H +#define OPENSSL_HEADER_DIGEST_INTERNAL_H + +#include <openssl/base.h> + +#if defined(__cplusplus) +extern "C" { +#endif + + +struct env_md_st { + /* type contains a NID identifing the digest function. (For example, + * NID_md5.) */ + int type; + + /* md_size contains the size, in bytes, of the resulting digest. */ + unsigned md_size; + + /* flags contains the OR of |EVP_MD_FLAG_*| values. */ + uint32_t flags; + + /* init initialises the state in |ctx->md_data|. It returns one on success + * and zero otherwise. */ + int (*init)(EVP_MD_CTX *ctx); + + /* update hashes |len| bytes of |data| into the state in |ctx->md_data|. */ + int (*update)(EVP_MD_CTX *ctx, const void *data, size_t count); + + /* final completes the hash and writes |md_size| bytes of digest to |out|. */ + int (*final)(EVP_MD_CTX *ctx, uint8_t *out); + + /* block_size contains the hash's native block size. */ + unsigned block_size; + + /* ctx_size contains the size, in bytes, of the state of the hash function. */ + unsigned ctx_size; +}; + +/* evp_md_pctx_ops contains function pointers to allow the |pctx| member of + * |EVP_MD_CTX| to be manipulated without breaking laying by calling EVP + * functions. */ +struct evp_md_pctx_ops { + /* free is called when an |EVP_MD_CTX| is being freed and the |pctx| also + * needs to be freed. */ + void (*free) (EVP_PKEY_CTX *pctx); + + /* dup is called when an |EVP_MD_CTX| is copied and so the |pctx| also needs + * to be copied. */ + EVP_PKEY_CTX* (*dup) (EVP_PKEY_CTX *pctx); + + /* begin_digest is called when a new digest operation is started. It returns + * one on success and zero otherwise. */ + int (*begin_digest) (EVP_MD_CTX *ctx); +}; + + +#if defined(__cplusplus) +} /* extern C */ +#endif + +#endif /* OPENSSL_HEADER_DIGEST_INTERNAL */ |