#include "cryptlib.h"
#include <openssl/objects.h>
#include <openssl/evp.h>
+#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
+#endif
void EVP_MD_CTX_init(EVP_MD_CTX *ctx)
{
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);
+#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
* ENGINE and EVP_MD could be used). */
if(ctx->engine)
ENGINE_finish(ctx->engine);
- if(!impl)
+ if(impl)
+ {
+ if (!ENGINE_init(impl))
+ {
+ EVPerr(EVP_F_EVP_DIGESTINIT, 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)
else
ctx->engine = NULL;
}
- else if(!ctx->digest)
+ else
+ if(!ctx->digest)
{
EVPerr(EVP_F_EVP_DIGESTINIT, EVP_R_NO_DIGEST_SET);
return 0;
}
+#endif
if (ctx->digest != type)
{
if (ctx->digest && ctx->digest->ctx_size)
if (type->ctx_size)
ctx->md_data=OPENSSL_malloc(type->ctx_size);
}
+#ifndef OPENSSL_NO_ENGINE
skip_to_init:
- return type->init(ctx);
+#endif
+ return ctx->digest->init(ctx);
}
int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data,
int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size)
{
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;
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,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,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->ctx_size)
{
- out->md_data=OPENSSL_malloc(out->digest->ctx_size);
+ if (tmp_buf) out->md_data = tmp_buf;
+ else out->md_data=OPENSSL_malloc(out->digest->ctx_size);
memcpy(out->md_data,in->md_data,out->digest->ctx_size);
}
-
+
if (out->digest->copy)
return out->digest->copy(out,in);
return 1;
}
-int EVP_Digest(void *data, unsigned int count,
+int EVP_Digest(const void *data, unsigned int count,
unsigned char *md, unsigned int *size, const EVP_MD *type, ENGINE *impl)
{
EVP_MD_CTX ctx;
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)
+ if (ctx->digest && ctx->digest->ctx_size && ctx->md_data
+ && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE))
{
- memset(ctx->md_data,0,ctx->digest->ctx_size);
+ OPENSSL_cleanse(ctx->md_data,ctx->digest->ctx_size);
OPENSSL_free(ctx->md_data);
}
+#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);
+#endif
memset(ctx,'\0',sizeof *ctx);
return 1;