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-rw-r--r--crypto/evp/digest.c459
1 files changed, 223 insertions, 236 deletions
diff --git a/crypto/evp/digest.c b/crypto/evp/digest.c
index d14e8e48d5af..2e202c8fe031 100644
--- a/crypto/evp/digest.c
+++ b/crypto/evp/digest.c
@@ -5,21 +5,21 @@
* 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:
@@ -34,10 +34,10 @@
* 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
+ * 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
@@ -49,7 +49,7 @@
* 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
@@ -63,7 +63,7 @@
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * 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
@@ -114,294 +114,281 @@
#include <openssl/objects.h>
#include <openssl/evp.h>
#ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
+# include <openssl/engine.h>
#endif
#ifdef OPENSSL_FIPS
-#include <openssl/fips.h>
+# include <openssl/fips.h>
#endif
void EVP_MD_CTX_init(EVP_MD_CTX *ctx)
- {
- memset(ctx,'\0',sizeof *ctx);
- }
+{
+ memset(ctx, '\0', sizeof *ctx);
+}
EVP_MD_CTX *EVP_MD_CTX_create(void)
- {
- EVP_MD_CTX *ctx=OPENSSL_malloc(sizeof *ctx);
+{
+ EVP_MD_CTX *ctx = OPENSSL_malloc(sizeof *ctx);
- if (ctx)
- EVP_MD_CTX_init(ctx);
+ if (ctx)
+ EVP_MD_CTX_init(ctx);
- return ctx;
- }
+ return ctx;
+}
int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type)
- {
- EVP_MD_CTX_init(ctx);
- return EVP_DigestInit_ex(ctx, type, NULL);
- }
+{
+ EVP_MD_CTX_init(ctx);
+ return EVP_DigestInit_ex(ctx, type, NULL);
+}
int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl)
- {
- EVP_MD_CTX_clear_flags(ctx,EVP_MD_CTX_FLAG_CLEANED);
+{
+ EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
#ifndef OPENSSL_NO_ENGINE
- /* Whether it's nice or not, "Inits" can be used on "Final"'d contexts
- * so this context may already have an ENGINE! Try to avoid releasing
- * the previous handle, re-querying for an ENGINE, and having a
- * reinitialisation, when it may all be unecessary. */
- if (ctx->engine && ctx->digest && (!type ||
- (type && (type->type == ctx->digest->type))))
- goto skip_to_init;
- if (type)
- {
- /* Ensure an ENGINE left lying around from last time is cleared
- * (the previous check attempted to avoid this if the same
- * ENGINE and EVP_MD could be used). */
- if(ctx->engine)
- ENGINE_finish(ctx->engine);
- if(impl)
- {
- if (!ENGINE_init(impl))
- {
- EVPerr(EVP_F_EVP_DIGESTINIT_EX,EVP_R_INITIALIZATION_ERROR);
- return 0;
- }
- }
- else
- /* Ask if an ENGINE is reserved for this job */
- impl = ENGINE_get_digest_engine(type->type);
- if(impl)
- {
- /* There's an ENGINE for this job ... (apparently) */
- const EVP_MD *d = ENGINE_get_digest(impl, type->type);
- if(!d)
- {
- /* Same comment from evp_enc.c */
- EVPerr(EVP_F_EVP_DIGESTINIT_EX,EVP_R_INITIALIZATION_ERROR);
- ENGINE_finish(impl);
- return 0;
- }
- /* We'll use the ENGINE's private digest definition */
- type = d;
- /* Store the ENGINE functional reference so we know
- * 'type' came from an ENGINE and we need to release
- * it when done. */
- ctx->engine = impl;
- }
- else
- ctx->engine = NULL;
- }
- else
- if(!ctx->digest)
- {
- EVPerr(EVP_F_EVP_DIGESTINIT_EX,EVP_R_NO_DIGEST_SET);
- return 0;
- }
+ /*
+ * Whether it's nice or not, "Inits" can be used on "Final"'d contexts so
+ * this context may already have an ENGINE! Try to avoid releasing the
+ * previous handle, re-querying for an ENGINE, and having a
+ * reinitialisation, when it may all be unecessary.
+ */
+ if (ctx->engine && ctx->digest && (!type ||
+ (type
+ && (type->type ==
+ ctx->digest->type))))
+ goto skip_to_init;
+ if (type) {
+ /*
+ * Ensure an ENGINE left lying around from last time is cleared (the
+ * previous check attempted to avoid this if the same ENGINE and
+ * EVP_MD could be used).
+ */
+ if (ctx->engine)
+ ENGINE_finish(ctx->engine);
+ if (impl) {
+ if (!ENGINE_init(impl)) {
+ EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
+ return 0;
+ }
+ } else
+ /* Ask if an ENGINE is reserved for this job */
+ impl = ENGINE_get_digest_engine(type->type);
+ if (impl) {
+ /* There's an ENGINE for this job ... (apparently) */
+ const EVP_MD *d = ENGINE_get_digest(impl, type->type);
+ if (!d) {
+ /* Same comment from evp_enc.c */
+ EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
+ ENGINE_finish(impl);
+ return 0;
+ }
+ /* We'll use the ENGINE's private digest definition */
+ type = d;
+ /*
+ * Store the ENGINE functional reference so we know 'type' came
+ * from an ENGINE and we need to release it when done.
+ */
+ ctx->engine = impl;
+ } else
+ ctx->engine = NULL;
+ } else {
+ if (!ctx->digest) {
+ EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_NO_DIGEST_SET);
+ return 0;
+ }
+ type = ctx->digest;
+ }
#endif
- if (ctx->digest != type)
- {
- if (ctx->digest && ctx->digest->ctx_size)
- OPENSSL_free(ctx->md_data);
- ctx->digest=type;
- if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size)
- {
- ctx->update = type->update;
- ctx->md_data=OPENSSL_malloc(type->ctx_size);
- if (ctx->md_data == NULL)
- {
- EVPerr(EVP_F_EVP_DIGESTINIT_EX,
- ERR_R_MALLOC_FAILURE);
- return 0;
- }
- }
- }
+ if (ctx->digest != type) {
+ if (ctx->digest && ctx->digest->ctx_size)
+ OPENSSL_free(ctx->md_data);
+ ctx->digest = type;
+ if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size) {
+ ctx->update = type->update;
+ ctx->md_data = OPENSSL_malloc(type->ctx_size);
+ if (ctx->md_data == NULL) {
+ EVPerr(EVP_F_EVP_DIGESTINIT_EX, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ }
+ }
#ifndef OPENSSL_NO_ENGINE
-skip_to_init:
+ skip_to_init:
#endif
- if (ctx->pctx)
- {
- int r;
- r = EVP_PKEY_CTX_ctrl(ctx->pctx, -1, EVP_PKEY_OP_TYPE_SIG,
- EVP_PKEY_CTRL_DIGESTINIT, 0, ctx);
- if (r <= 0 && (r != -2))
- return 0;
- }
- if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT)
- return 1;
+ if (ctx->pctx) {
+ int r;
+ r = EVP_PKEY_CTX_ctrl(ctx->pctx, -1, EVP_PKEY_OP_TYPE_SIG,
+ EVP_PKEY_CTRL_DIGESTINIT, 0, ctx);
+ if (r <= 0 && (r != -2))
+ return 0;
+ }
+ if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT)
+ return 1;
#ifdef OPENSSL_FIPS
- if (FIPS_mode())
- {
- if (FIPS_digestinit(ctx, type))
- return 1;
- OPENSSL_free(ctx->md_data);
- ctx->md_data = NULL;
- return 0;
- }
+ if (FIPS_mode()) {
+ if (FIPS_digestinit(ctx, type))
+ return 1;
+ OPENSSL_free(ctx->md_data);
+ ctx->md_data = NULL;
+ return 0;
+ }
#endif
- return ctx->digest->init(ctx);
- }
+ return ctx->digest->init(ctx);
+}
int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t count)
- {
+{
#ifdef OPENSSL_FIPS
- return FIPS_digestupdate(ctx, data, count);
+ return FIPS_digestupdate(ctx, data, count);
#else
- return ctx->update(ctx,data,count);
+ return ctx->update(ctx, data, count);
#endif
- }
+}
/* The caller can assume that this removes any secret data from the context */
int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size)
- {
- int ret;
- ret = EVP_DigestFinal_ex(ctx, md, size);
- EVP_MD_CTX_cleanup(ctx);
- return ret;
- }
+{
+ int ret;
+ ret = EVP_DigestFinal_ex(ctx, md, size);
+ EVP_MD_CTX_cleanup(ctx);
+ return ret;
+}
/* The caller can assume that this removes any secret data from the context */
int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size)
- {
+{
#ifdef OPENSSL_FIPS
- return FIPS_digestfinal(ctx, md, size);
+ return FIPS_digestfinal(ctx, md, size);
#else
- int ret;
+ int ret;
- OPENSSL_assert(ctx->digest->md_size <= EVP_MAX_MD_SIZE);
- ret=ctx->digest->final(ctx,md);
- if (size != NULL)
- *size=ctx->digest->md_size;
- if (ctx->digest->cleanup)
- {
- ctx->digest->cleanup(ctx);
- EVP_MD_CTX_set_flags(ctx,EVP_MD_CTX_FLAG_CLEANED);
- }
- memset(ctx->md_data,0,ctx->digest->ctx_size);
- return ret;
+ OPENSSL_assert(ctx->digest->md_size <= EVP_MAX_MD_SIZE);
+ ret = ctx->digest->final(ctx, md);
+ if (size != NULL)
+ *size = ctx->digest->md_size;
+ if (ctx->digest->cleanup) {
+ ctx->digest->cleanup(ctx);
+ EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
+ }
+ memset(ctx->md_data, 0, ctx->digest->ctx_size);
+ return ret;
#endif
- }
+}
int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in)
- {
- EVP_MD_CTX_init(out);
- return EVP_MD_CTX_copy_ex(out, in);
- }
+{
+ EVP_MD_CTX_init(out);
+ return EVP_MD_CTX_copy_ex(out, in);
+}
int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in)
- {
- unsigned char *tmp_buf;
- if ((in == NULL) || (in->digest == NULL))
- {
- EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,EVP_R_INPUT_NOT_INITIALIZED);
- return 0;
- }
+{
+ unsigned char *tmp_buf;
+ if ((in == NULL) || (in->digest == NULL)) {
+ EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_INPUT_NOT_INITIALIZED);
+ return 0;
+ }
#ifndef OPENSSL_NO_ENGINE
- /* Make sure it's safe to copy a digest context using an ENGINE */
- if (in->engine && !ENGINE_init(in->engine))
- {
- EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,ERR_R_ENGINE_LIB);
- return 0;
- }
+ /* Make sure it's safe to copy a digest context using an ENGINE */
+ if (in->engine && !ENGINE_init(in->engine)) {
+ EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, ERR_R_ENGINE_LIB);
+ return 0;
+ }
#endif
- if (out->digest == in->digest)
- {
- tmp_buf = out->md_data;
- EVP_MD_CTX_set_flags(out,EVP_MD_CTX_FLAG_REUSE);
- }
- else tmp_buf = NULL;
- EVP_MD_CTX_cleanup(out);
- memcpy(out,in,sizeof *out);
+ if (out->digest == in->digest) {
+ tmp_buf = out->md_data;
+ EVP_MD_CTX_set_flags(out, EVP_MD_CTX_FLAG_REUSE);
+ } else
+ tmp_buf = NULL;
+ EVP_MD_CTX_cleanup(out);
+ memcpy(out, in, sizeof *out);
+
+ if (in->md_data && out->digest->ctx_size) {
+ if (tmp_buf)
+ out->md_data = tmp_buf;
+ else {
+ out->md_data = OPENSSL_malloc(out->digest->ctx_size);
+ if (!out->md_data) {
+ EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ }
+ memcpy(out->md_data, in->md_data, out->digest->ctx_size);
+ }
- if (in->md_data && out->digest->ctx_size)
- {
- if (tmp_buf)
- out->md_data = tmp_buf;
- else
- {
- out->md_data=OPENSSL_malloc(out->digest->ctx_size);
- if (!out->md_data)
- {
- EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,ERR_R_MALLOC_FAILURE);
- return 0;
- }
- }
- memcpy(out->md_data,in->md_data,out->digest->ctx_size);
- }
+ out->update = in->update;
- out->update = in->update;
+ if (in->pctx) {
+ out->pctx = EVP_PKEY_CTX_dup(in->pctx);
+ if (!out->pctx) {
+ EVP_MD_CTX_cleanup(out);
+ return 0;
+ }
+ }
- if (in->pctx)
- {
- out->pctx = EVP_PKEY_CTX_dup(in->pctx);
- if (!out->pctx)
- {
- EVP_MD_CTX_cleanup(out);
- return 0;
- }
- }
+ if (out->digest->copy)
+ return out->digest->copy(out, in);
- if (out->digest->copy)
- return out->digest->copy(out,in);
-
- return 1;
- }
+ return 1;
+}
int EVP_Digest(const void *data, size_t count,
- unsigned char *md, unsigned int *size, const EVP_MD *type, ENGINE *impl)
- {
- EVP_MD_CTX ctx;
- int ret;
+ unsigned char *md, unsigned int *size, const EVP_MD *type,
+ ENGINE *impl)
+{
+ EVP_MD_CTX ctx;
+ int ret;
- EVP_MD_CTX_init(&ctx);
- EVP_MD_CTX_set_flags(&ctx,EVP_MD_CTX_FLAG_ONESHOT);
- ret=EVP_DigestInit_ex(&ctx, type, impl)
- && EVP_DigestUpdate(&ctx, data, count)
- && EVP_DigestFinal_ex(&ctx, md, size);
- EVP_MD_CTX_cleanup(&ctx);
+ EVP_MD_CTX_init(&ctx);
+ EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_ONESHOT);
+ ret = EVP_DigestInit_ex(&ctx, type, impl)
+ && EVP_DigestUpdate(&ctx, data, count)
+ && EVP_DigestFinal_ex(&ctx, md, size);
+ EVP_MD_CTX_cleanup(&ctx);
- return ret;
- }
+ return ret;
+}
void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx)
- {
- if (ctx)
- {
- EVP_MD_CTX_cleanup(ctx);
- OPENSSL_free(ctx);
- }
- }
+{
+ if (ctx) {
+ EVP_MD_CTX_cleanup(ctx);
+ OPENSSL_free(ctx);
+ }
+}
/* This call frees resources associated with the context */
int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx)
- {
+{
#ifndef OPENSSL_FIPS
- /* Don't assume ctx->md_data was cleaned in EVP_Digest_Final,
- * because sometimes only copies of the context are ever finalised.
- */
- if (ctx->digest && ctx->digest->cleanup
- && !EVP_MD_CTX_test_flags(ctx,EVP_MD_CTX_FLAG_CLEANED))
- ctx->digest->cleanup(ctx);
- if (ctx->digest && ctx->digest->ctx_size && ctx->md_data
- && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE))
- {
- OPENSSL_cleanse(ctx->md_data,ctx->digest->ctx_size);
- OPENSSL_free(ctx->md_data);
- }
+ /*
+ * Don't assume ctx->md_data was cleaned in EVP_Digest_Final, because
+ * sometimes only copies of the context are ever finalised.
+ */
+ if (ctx->digest && ctx->digest->cleanup
+ && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_CLEANED))
+ ctx->digest->cleanup(ctx);
+ if (ctx->digest && ctx->digest->ctx_size && ctx->md_data
+ && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE)) {
+ OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size);
+ OPENSSL_free(ctx->md_data);
+ }
#endif
- if (ctx->pctx)
- EVP_PKEY_CTX_free(ctx->pctx);
+ if (ctx->pctx)
+ EVP_PKEY_CTX_free(ctx->pctx);
#ifndef OPENSSL_NO_ENGINE
- if(ctx->engine)
- /* The EVP_MD we used belongs to an ENGINE, release the
- * functional reference we held for this reason. */
- ENGINE_finish(ctx->engine);
+ if (ctx->engine)
+ /*
+ * The EVP_MD we used belongs to an ENGINE, release the functional
+ * reference we held for this reason.
+ */
+ ENGINE_finish(ctx->engine);
#endif
#ifdef OPENSSL_FIPS
- FIPS_md_ctx_cleanup(ctx);
+ FIPS_md_ctx_cleanup(ctx);
#endif
- memset(ctx,'\0',sizeof *ctx);
+ memset(ctx, '\0', sizeof *ctx);
- return 1;
- }
+ return 1;
+}