Initial commit of BoringSSL for Android.

1 files changed, 282 insertions, 0 deletions

diff --git a/src/include/openssl/digest.h b/src/include/openssl/digest.h
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+/* 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_H
+#define OPENSSL_HEADER_DIGEST_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+/* Digest functions.
+ *
+ * An EVP_MD abstracts the details of a specific hash function allowing code to
+ * deal with the concept of a "hash function" without needing to know exactly
+ * which hash function it is. */
+
+
+/* Hash algorithms.
+ *
+ * The following functions return |EVP_MD| objects that implement the named hash
+ * function. */
+
+OPENSSL_EXPORT const EVP_MD *EVP_md4(void);
+OPENSSL_EXPORT const EVP_MD *EVP_md5(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha1(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha224(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha256(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha384(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha512(void);
+
+/* EVP_md5_sha1 is a TLS-specific |EVP_MD| which computes the concatenation of
+ * MD5 and SHA-1, as used in TLS 1.1 and below. */
+OPENSSL_EXPORT const EVP_MD *EVP_md5_sha1(void);
+
+/* EVP_get_digestbynid returns an |EVP_MD| for the given NID, or NULL if no
+ * such digest is known. */
+OPENSSL_EXPORT const EVP_MD *EVP_get_digestbynid(int nid);
+
+/* EVP_get_digestbyobj returns an |EVP_MD| for the given |ASN1_OBJECT|, or NULL
+ * if no such digest is known. */
+OPENSSL_EXPORT const EVP_MD *EVP_get_digestbyobj(const ASN1_OBJECT *obj);
+
+
+/* Digest contexts.
+ *
+ * An EVP_MD_CTX represents the state of a specific digest operation in
+ * progress. */
+
+/* EVP_MD_CTX_init initialises an, already allocated, |EVP_MD_CTX|. */
+OPENSSL_EXPORT void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
+
+/* EVP_MD_CTX_create allocates and initialises a fresh |EVP_MD_CTX| and returns
+ * it, or NULL on allocation failure. */
+OPENSSL_EXPORT EVP_MD_CTX *EVP_MD_CTX_create(void);
+
+/* EVP_MD_CTX_cleanup frees any resources owned by |ctx| and resets it to a
+ * freshly initialised state. It does not free |ctx| itself. It returns one. */
+OPENSSL_EXPORT int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx);
+
+/* EVP_MD_CTX_destroy calls |EVP_MD_CTX_cleanup| and then frees |ctx| itself. */
+OPENSSL_EXPORT void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
+
+/* EVP_MD_CTX_copy_ex sets |out|, which must already be initialised, to be a
+ * copy of |in|. It returns one on success and zero on error. */
+OPENSSL_EXPORT int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in);
+
+
+/* Digest operations. */
+
+/* EVP_DigestInit_ex configures |ctx|, which must already have been
+ * initialised, for a fresh hashing operation using |type|. It returns one on
+ * success and zero otherwise. */
+OPENSSL_EXPORT int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
+                                     ENGINE *engine);
+
+/* EVP_DigestInit acts like |EVP_DigestInit_ex| except that |ctx| is
+ * initialised before use. */
+OPENSSL_EXPORT int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+
+/* EVP_DigestUpdate hashes |len| bytes from |data| into the hashing operation
+ * in |ctx|. It returns one on success and zero otherwise. */
+OPENSSL_EXPORT int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data,
+                                    size_t len);
+
+/* EVP_MAX_MD_SIZE is the largest digest size supported. Functions that output
+ * a digest generally require the buffer have at least this much space. */
+#define EVP_MAX_MD_SIZE 64 /* SHA-512 is the longest so far. */
+
+/* EVP_DigestFinal_ex finishes the digest in |ctx| and writes the output to
+ * |md_out|. At most |EVP_MAX_MD_SIZE| bytes are written. If |out_size| is not
+ * NULL then |*out_size| is set to the number of bytes written. It returns one
+ * on success and zero otherwise. After this call, the hash cannot be updated
+ * or finished again until |EVP_DigestInit_ex| is called to start another
+ * hashing operation. */
+OPENSSL_EXPORT int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, uint8_t *md_out,
+                                      unsigned int *out_size);
+
+/* EVP_DigestFinal acts like |EVP_DigestFinal_ex| except that
+ * |EVP_MD_CTX_cleanup| is called on |ctx| before returning. */
+OPENSSL_EXPORT int EVP_DigestFinal(EVP_MD_CTX *ctx, uint8_t *md_out,
+                                   unsigned int *out_size);
+
+/* EVP_Digest performs a complete hashing operation in one call. It hashes
+ * |len| bytes from |data| and writes the digest to |md_out|. At most
+ * |EVP_MAX_MD_SIZE| bytes are written. If |out_size| is not NULL then
+ * |*out_size| is set to the number of bytes written. It returns one on success
+ * and zero otherwise. */
+OPENSSL_EXPORT int EVP_Digest(const void *data, size_t len, uint8_t *md_out,
+                              unsigned int *md_out_size, const EVP_MD *type,
+                              ENGINE *impl);
+
+
+/* Digest function accessors.
+ *
+ * These functions allow code to learn details about an abstract hash
+ * function. */
+
+/* EVP_MD_type returns a NID identifing |md|. (For example, |NID_md5|.) */
+OPENSSL_EXPORT int EVP_MD_type(const EVP_MD *md);
+
+/* EVP_MD_name returns the short name for |md| or NULL if no name is known. */
+OPENSSL_EXPORT const char *EVP_MD_name(const EVP_MD *md);
+
+/* EVP_MD_flags returns the flags for |md|, which is a set of |EVP_MD_FLAG_*|
+ * values, ORed together. */
+OPENSSL_EXPORT uint32_t EVP_MD_flags(const EVP_MD *md);
+
+/* EVP_MD_size returns the digest size of |md|, in bytes. */
+OPENSSL_EXPORT size_t EVP_MD_size(const EVP_MD *md);
+
+/* EVP_MD_block_size returns the native block-size of |md|. */
+OPENSSL_EXPORT size_t EVP_MD_block_size(const EVP_MD *md);
+
+/* EVP_MD_FLAG_PKEY_DIGEST indicates the the digest function is used with a
+ * specific public key in order to verify signatures. (For example,
+ * EVP_dss1.) */
+#define EVP_MD_FLAG_PKEY_DIGEST 1
+
+/* EVP_MD_FLAG_DIGALGID_ABSENT indicates that the parameter type in an X.509
+ * DigestAlgorithmIdentifier representing this digest function should be
+ * undefined rather than NULL. */
+#define EVP_MD_FLAG_DIGALGID_ABSENT 2
+
+
+/* Deprecated functions. */
+
+/* EVP_MD_CTX_copy sets |out|, which must /not/ be initialised, to be a copy of
+ * |in|. It returns one on success and zero on error. */
+OPENSSL_EXPORT int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in);
+
+/* EVP_add_digest does nothing and returns one. It exists only for
+ * compatibility with OpenSSL. */
+OPENSSL_EXPORT int EVP_add_digest(const EVP_MD *digest);
+
+
+/* Digest operation accessors. */
+
+/* EVP_MD_CTX_md returns the underlying digest function, or NULL if one has not
+ * been set. */
+OPENSSL_EXPORT const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx);
+
+/* EVP_MD_CTX_size returns the digest size of |ctx|. It will crash if a digest
+ * hasn't been set on |ctx|. */
+OPENSSL_EXPORT unsigned EVP_MD_CTX_size(const EVP_MD_CTX *ctx);
+
+/* EVP_MD_CTX_block_size returns the block size of the digest function used by
+ * |ctx|. It will crash if a digest hasn't been set on |ctx|. */
+OPENSSL_EXPORT unsigned EVP_MD_CTX_block_size(const EVP_MD_CTX *ctx);
+
+/* EVP_MD_CTX_type returns a NID describing the digest function used by |ctx|.
+ * (For example, |NID_md5|.) It will crash if a digest hasn't been set on
+ * |ctx|. */
+OPENSSL_EXPORT int EVP_MD_CTX_type(const EVP_MD_CTX *ctx);
+
+/* EVP_MD_CTX_set_flags ORs |flags| into the flags member of |ctx|. */
+OPENSSL_EXPORT void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, uint32_t flags);
+
+/* EVP_MD_CTX_clear_flags clears any bits from the flags member of |ctx| that
+ * are set in |flags|. */
+OPENSSL_EXPORT void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, uint32_t flags);
+
+/* EVP_MD_CTX_test_flags returns the AND of |flags| and the flags member of
+ * |ctx|. */
+OPENSSL_EXPORT uint32_t EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx,
+                                              uint32_t flags);
+
+
+struct evp_md_pctx_ops;
+
+struct env_md_ctx_st {
+  /* digest is the underlying digest function, or NULL if not set. */
+  const EVP_MD *digest;
+  /* flags is the OR of a number of |EVP_MD_CTX_FLAG_*| values. */
+  uint32_t flags;
+  /* md_data points to a block of memory that contains the hash-specific
+   * context. */
+  void *md_data;
+  /* update is usually copied from |digest->update| but can differ in some
+   * cases, i.e. HMAC.
+   * TODO(davidben): Remove this hook once |EVP_PKEY_HMAC| is gone. */
+  int (*update)(EVP_MD_CTX *ctx, const void *data, size_t count);
+
+  /* pctx is an opaque (at this layer) pointer to additional context that
+   * EVP_PKEY functions may store in this object. */
+  EVP_PKEY_CTX *pctx;
+
+  /* pctx_ops, if not NULL, points to a vtable that contains functions to
+   * manipulate |pctx|. */
+  const struct evp_md_pctx_ops *pctx_ops;
+} /* EVP_MD_CTX */;
+
+/* EVP_MD_CTX_FLAG_NO_INIT causes the |EVP_MD|'s |init| function not to be
+ * called, the |update| member not to be copied from the |EVP_MD| in
+ * |EVP_DigestInit_ex| and for |md_data| not to be initialised. */
+#define EVP_MD_CTX_FLAG_NO_INIT 1
+
+
+#if defined(__cplusplus)
+}  /* extern C */
+#endif
+
+#define DIGEST_F_EVP_DigestInit_ex 100
+#define DIGEST_F_EVP_MD_CTX_copy_ex 101
+#define DIGEST_R_INPUT_NOT_INITIALIZED 100
+
+#endif  /* OPENSSL_HEADER_DIGEST_H */