This changes EVP's cipher and digest code to hook via the ENGINE support.

See crypto/engine/README for details.

- it also removes openbsd_hw.c from the build (that functionality is
  going to be available in the openbsd ENGINE in a upcoming commit)

- evp_test has had the extra initialisation added so it will use (if
  possible) any ENGINEs supporting the algorithms required.

crypto/evp/Makefile.ssl

@@ -32,7 +32,7 @@ LIBSRC= encode.c digest.c evp_enc.c evp_key.c \
 	p_open.c p_seal.c p_sign.c p_verify.c p_lib.c p_enc.c p_dec.c \
 	bio_md.c bio_b64.c bio_enc.c evp_err.c e_null.c \
 	c_all.c c_allc.c c_alld.c evp_lib.c bio_ok.c \
-	evp_pkey.c evp_pbe.c p5_crpt.c p5_crpt2.c openbsd_hw.c
+	evp_pkey.c evp_pbe.c p5_crpt.c p5_crpt2.c
 
 LIBOBJ=	encode.o digest.o evp_enc.o evp_key.o \
 	e_des.o e_bf.o e_idea.o e_des3.o \
@@ -43,7 +43,7 @@ LIBOBJ=	encode.o digest.o evp_enc.o evp_key.o \
 	p_open.o p_seal.o p_sign.o p_verify.o p_lib.o p_enc.o p_dec.o \
 	bio_md.o bio_b64.o bio_enc.o evp_err.o e_null.o \
 	c_all.o c_allc.o c_alld.o evp_lib.o bio_ok.o \
-	evp_pkey.o evp_pbe.o p5_crpt.o p5_crpt2.o openbsd_hw.o
+	evp_pkey.o evp_pbe.o p5_crpt.o p5_crpt2.o
 
 SRC= $(LIBSRC)
 
@@ -174,13 +174,16 @@ c_alld.o: ../../include/openssl/types.h ../../include/openssl/x509.h
 c_alld.o: ../../include/openssl/x509_vfy.h ../cryptlib.h c_alld.c
 digest.o: ../../e_os.h ../../include/openssl/asn1.h ../../include/openssl/bio.h
 digest.o: ../../include/openssl/bn.h ../../include/openssl/buffer.h
-digest.o: ../../include/openssl/crypto.h ../../include/openssl/e_os2.h
-digest.o: ../../include/openssl/err.h ../../include/openssl/evp.h
-digest.o: ../../include/openssl/lhash.h ../../include/openssl/obj_mac.h
-digest.o: ../../include/openssl/objects.h ../../include/openssl/opensslconf.h
-digest.o: ../../include/openssl/opensslv.h ../../include/openssl/safestack.h
-digest.o: ../../include/openssl/stack.h ../../include/openssl/symhacks.h
-digest.o: ../../include/openssl/types.h ../cryptlib.h digest.c
+digest.o: ../../include/openssl/crypto.h ../../include/openssl/dh.h
+digest.o: ../../include/openssl/dsa.h ../../include/openssl/e_os2.h
+digest.o: ../../include/openssl/engine.h ../../include/openssl/err.h
+digest.o: ../../include/openssl/evp.h ../../include/openssl/lhash.h
+digest.o: ../../include/openssl/obj_mac.h ../../include/openssl/objects.h
+digest.o: ../../include/openssl/opensslconf.h ../../include/openssl/opensslv.h
+digest.o: ../../include/openssl/rand.h ../../include/openssl/rsa.h
+digest.o: ../../include/openssl/safestack.h ../../include/openssl/stack.h
+digest.o: ../../include/openssl/symhacks.h ../../include/openssl/types.h
+digest.o: ../../include/openssl/ui.h ../cryptlib.h digest.c
 e_aes.o: ../../include/openssl/asn1.h ../../include/openssl/bio.h
 e_aes.o: ../../include/openssl/bn.h ../../include/openssl/crypto.h
 e_aes.o: ../../include/openssl/e_os2.h ../../include/openssl/err.h
@@ -301,12 +304,15 @@ encode.o: ../../include/openssl/types.h ../cryptlib.h encode.c
 evp_enc.o: ../../e_os.h ../../include/openssl/asn1.h
 evp_enc.o: ../../include/openssl/bio.h ../../include/openssl/bn.h
 evp_enc.o: ../../include/openssl/buffer.h ../../include/openssl/crypto.h
-evp_enc.o: ../../include/openssl/e_os2.h ../../include/openssl/err.h
-evp_enc.o: ../../include/openssl/evp.h ../../include/openssl/lhash.h
-evp_enc.o: ../../include/openssl/obj_mac.h ../../include/openssl/objects.h
-evp_enc.o: ../../include/openssl/opensslconf.h ../../include/openssl/opensslv.h
-evp_enc.o: ../../include/openssl/safestack.h ../../include/openssl/stack.h
-evp_enc.o: ../../include/openssl/symhacks.h ../../include/openssl/types.h
+evp_enc.o: ../../include/openssl/dh.h ../../include/openssl/dsa.h
+evp_enc.o: ../../include/openssl/e_os2.h ../../include/openssl/engine.h
+evp_enc.o: ../../include/openssl/err.h ../../include/openssl/evp.h
+evp_enc.o: ../../include/openssl/lhash.h ../../include/openssl/obj_mac.h
+evp_enc.o: ../../include/openssl/objects.h ../../include/openssl/opensslconf.h
+evp_enc.o: ../../include/openssl/opensslv.h ../../include/openssl/rand.h
+evp_enc.o: ../../include/openssl/rsa.h ../../include/openssl/safestack.h
+evp_enc.o: ../../include/openssl/stack.h ../../include/openssl/symhacks.h
+evp_enc.o: ../../include/openssl/types.h ../../include/openssl/ui.h
 evp_enc.o: ../cryptlib.h evp_enc.c evp_locl.h
 evp_err.o: ../../include/openssl/asn1.h ../../include/openssl/bio.h
 evp_err.o: ../../include/openssl/bn.h ../../include/openssl/crypto.h
@@ -513,15 +519,6 @@ names.o: ../../include/openssl/sha.h ../../include/openssl/stack.h
 names.o: ../../include/openssl/symhacks.h ../../include/openssl/types.h
 names.o: ../../include/openssl/x509.h ../../include/openssl/x509_vfy.h
 names.o: ../cryptlib.h names.c
-openbsd_hw.o: ../../include/openssl/asn1.h ../../include/openssl/bio.h
-openbsd_hw.o: ../../include/openssl/bn.h ../../include/openssl/crypto.h
-openbsd_hw.o: ../../include/openssl/e_os2.h ../../include/openssl/evp.h
-openbsd_hw.o: ../../include/openssl/obj_mac.h ../../include/openssl/objects.h
-openbsd_hw.o: ../../include/openssl/opensslconf.h
-openbsd_hw.o: ../../include/openssl/opensslv.h ../../include/openssl/rsa.h
-openbsd_hw.o: ../../include/openssl/safestack.h ../../include/openssl/stack.h
-openbsd_hw.o: ../../include/openssl/symhacks.h ../../include/openssl/types.h
-openbsd_hw.o: evp_locl.h openbsd_hw.c
 p5_crpt.o: ../../e_os.h ../../include/openssl/asn1.h
 p5_crpt.o: ../../include/openssl/bio.h ../../include/openssl/bn.h
 p5_crpt.o: ../../include/openssl/buffer.h ../../include/openssl/crypto.h

crypto/evp/digest.c

@@ -113,6 +113,7 @@
 #include "cryptlib.h"
 #include <openssl/objects.h>
 #include <openssl/evp.h>
+#include <openssl/engine.h>
 
 void EVP_MD_CTX_init(EVP_MD_CTX *ctx)
 	{
@@ -130,6 +131,52 @@ EVP_MD_CTX *EVP_MD_CTX_create(void)
 
 int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type)
 	{
+	return EVP_DigestInit_ex(ctx, type, NULL);
+	}
+int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl)
+	{
+	/* 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)
+			/* 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, EVP_R_INITIALIZATION_ERROR);
+				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, EVP_R_NO_DIGEST_SET);
+		return 0;
+		}
 	if (ctx->digest != type)
 		{
 		if (ctx->digest && ctx->digest->ctx_size)
@@ -138,6 +185,7 @@ int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type)
 		if (type->ctx_size)
 			ctx->md_data=OPENSSL_malloc(type->ctx_size);
 		}
+skip_to_init:
 	return type->init(ctx);
 	}
 
@@ -166,6 +214,12 @@ int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in)
 		EVPerr(EVP_F_EVP_MD_CTX_COPY,EVP_R_INPUT_NOT_INITIALIZED);
 		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,ERR_R_ENGINE_LIB);
+		return 0;
+		}
 
 	EVP_MD_CTX_cleanup(out);
 	memcpy(out,in,sizeof *out);
@@ -217,6 +271,10 @@ int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx)
 		memset(ctx->md_data,0,ctx->digest->ctx_size);
 		OPENSSL_free(ctx->md_data);
 		}
+	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);
 	memset(ctx,'\0',sizeof *ctx);
 
 	return 1;

crypto/evp/evp.h

@@ -262,6 +262,7 @@ struct env_md_st
 struct env_md_ctx_st
 	{
 	const EVP_MD *digest;
+	ENGINE *engine; /* functional reference if 'digest' is ENGINE-provided */
 	unsigned long flags;
 	void *md_data;
 	} /* EVP_MD_CTX */;
@@ -331,6 +332,7 @@ typedef struct evp_cipher_info_st
 struct evp_cipher_ctx_st
 	{
 	const EVP_CIPHER *cipher;
+	ENGINE *engine;	/* functional reference if 'cipher' is ENGINE-provided */
 	int encrypt;		/* encrypt or decrypt */
 	int buf_len;		/* number we have left */
 
@@ -456,6 +458,7 @@ void	EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
 int     EVP_MD_CTX_copy(EVP_MD_CTX *out,const EVP_MD_CTX *in);  
 #define EVP_MD_CTX_set_flags(ctx,flgs) ((ctx)->flags|=(flgs))
 int	EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+int	EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl);
 int	EVP_DigestUpdate(EVP_MD_CTX *ctx,const void *d,
 			 unsigned int cnt);
 int	EVP_DigestFinal(EVP_MD_CTX *ctx,unsigned char *md,unsigned int *s);
@@ -472,12 +475,16 @@ int	EVP_BytesToKey(const EVP_CIPHER *type,const EVP_MD *md,
 
 int	EVP_EncryptInit(EVP_CIPHER_CTX *ctx,const EVP_CIPHER *type,
 		const unsigned char *key, const unsigned char *iv);
+int	EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx,const EVP_CIPHER *type, ENGINE *impl,
+		const unsigned char *key, const unsigned char *iv);
 int	EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out,
 		int *outl, const unsigned char *in, int inl);
 int	EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
 
 int	EVP_DecryptInit(EVP_CIPHER_CTX *ctx,const EVP_CIPHER *type,
 		const unsigned char *key, const unsigned char *iv);
+int	EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx,const EVP_CIPHER *type, ENGINE *impl,
+		const unsigned char *key, const unsigned char *iv);
 int	EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out,
 		int *outl, const unsigned char *in, int inl);
 int	EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
@@ -485,6 +492,9 @@ int	EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
 int	EVP_CipherInit(EVP_CIPHER_CTX *ctx,const EVP_CIPHER *type,
 		       const unsigned char *key,const unsigned char *iv,
 		       int enc);
+int	EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx,const EVP_CIPHER *type, ENGINE *impl,
+		       const unsigned char *key,const unsigned char *iv,
+		       int enc);
 int	EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out,
 		int *outl, const unsigned char *in, int inl);
 int	EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
@@ -570,12 +580,16 @@ const EVP_CIPHER *EVP_des_cbc(void);
 const EVP_CIPHER *EVP_des_ede_cbc(void);
 const EVP_CIPHER *EVP_des_ede3_cbc(void);
 const EVP_CIPHER *EVP_desx_cbc(void);
+/* This should now be supported through the dev_crypto ENGINE. But also, why are
+ * rc4 and md5 declarations made here inside a "NO_DES" precompiler branch? */
+#if 0
 # ifdef OPENSSL_OPENBSD_DEV_CRYPTO
 const EVP_CIPHER *EVP_dev_crypto_des_ede3_cbc(void);
 const EVP_CIPHER *EVP_dev_crypto_rc4(void);
 const EVP_MD *EVP_dev_crypto_md5(void);
 # endif
 #endif
+#endif
 #ifndef OPENSSL_NO_RC4
 const EVP_CIPHER *EVP_rc4(void);
 const EVP_CIPHER *EVP_rc4_40(void);
@@ -711,6 +725,7 @@ void EVP_PBE_cleanup(void);
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
  */
+void ERR_load_EVP_strings(void);
 
 /* Error codes for the EVP functions. */
 
@@ -720,6 +735,7 @@ void EVP_PBE_cleanup(void);
 #define EVP_F_EVP_CIPHER_CTX_CTRL			 124
 #define EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH		 122
 #define EVP_F_EVP_DECRYPTFINAL				 101
+#define EVP_F_EVP_DIGESTINIT				 128
 #define EVP_F_EVP_ENCRYPTFINAL				 127
 #define EVP_F_EVP_MD_CTX_COPY				 110
 #define EVP_F_EVP_OPENINIT				 102
@@ -767,6 +783,7 @@ void EVP_PBE_cleanup(void);
 #define EVP_R_KEYGEN_FAILURE				 120
 #define EVP_R_MISSING_PARAMETERS			 103
 #define EVP_R_NO_CIPHER_SET				 131
+#define EVP_R_NO_DIGEST_SET				 139
 #define EVP_R_NO_DSA_PARAMETERS				 116
 #define EVP_R_NO_SIGN_FUNCTION_CONFIGURED		 104
 #define EVP_R_NO_VERIFY_FUNCTION_CONFIGURED		 105
@@ -788,4 +805,3 @@ void EVP_PBE_cleanup(void);
 }
 #endif
 #endif
-

crypto/evp/evp_enc.c

@@ -60,6 +60,7 @@
 #include "cryptlib.h"
 #include <openssl/evp.h>
 #include <openssl/err.h>
+#include <openssl/engine.h>
 #include "evp_locl.h"
 
 #include <assert.h>
@@ -75,24 +76,70 @@ void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx)
 int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
 	     const unsigned char *key, const unsigned char *iv, int enc)
 	{
+	return EVP_CipherInit_ex(ctx,cipher,NULL,key,iv,enc);
+	}
+int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl,
+	     const unsigned char *key, const unsigned char *iv, int enc)
+	{
 	if(enc && (enc != -1)) enc = 1;
+	/* 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->cipher && (!cipher ||
+			(cipher && (cipher->nid == ctx->cipher->nid))))
+		goto skip_to_init;
 	if (cipher)
 		{
+		/* Ensure an ENGINE left lying around from last time is cleared
+		 * (the previous check attempted to avoid this if the same
+		 * ENGINE and EVP_CIPHER could be used). */
+		if(ctx->engine)
+			ENGINE_finish(ctx->engine);
+		if(!impl)
+			/* Ask if an ENGINE is reserved for this job */
+			impl = ENGINE_get_cipher_engine(cipher->nid);
+		if(impl)
+			{
+			/* There's an ENGINE for this job ... (apparently) */
+			const EVP_CIPHER *c = ENGINE_get_cipher(impl, cipher->nid);
+			if(!c)
+				{
+				/* One positive side-effect of US's export
+				 * control history, is that we should at least
+				 * be able to avoid using US mispellings of
+				 * "initialisation"? */
+				EVPerr(EVP_F_EVP_CIPHERINIT, EVP_R_INITIALIZATION_ERROR);
+				return 0;
+				}
+			/* We'll use the ENGINE's private cipher definition */
+			cipher = c;
+			/* Store the ENGINE functional reference so we know
+			 * 'cipher' came from an ENGINE and we need to release
+			 * it when done. */
+			ctx->engine = impl;
+			}
+		else
+			ctx->engine = NULL;
 		ctx->cipher=cipher;
 		ctx->cipher_data=OPENSSL_malloc(ctx->cipher->ctx_size);
 		ctx->key_len = cipher->key_len;
 		ctx->flags = 0;
-		if(ctx->cipher->flags & EVP_CIPH_CTRL_INIT) {
-			if(!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) {
+		if(ctx->cipher->flags & EVP_CIPH_CTRL_INIT)
+			{
+			if(!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL))
+				{
 				EVPerr(EVP_F_EVP_CIPHERINIT, EVP_R_INITIALIZATION_ERROR);
 				return 0;
+				}
 			}
 		}
-	} else if(!ctx->cipher) {
+	else if(!ctx->cipher)
+		{
 		EVPerr(EVP_F_EVP_CIPHERINIT, EVP_R_NO_CIPHER_SET);
 		return 0;
-	}
-
+		}
+skip_to_init:
 	/* we assume block size is a power of 2 in *cryptUpdate */
 	assert(ctx->cipher->block_size == 1
 	       || ctx->cipher->block_size == 8
@@ -144,7 +191,7 @@ int EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
 	{
 	if (ctx->encrypt)
 		return EVP_EncryptFinal(ctx,out,outl);
-	else	return(EVP_DecryptFinal(ctx,out,outl));
+	else	return EVP_DecryptFinal(ctx,out,outl);
 	}
 
 int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
@@ -355,6 +402,10 @@ int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c)
 		if(!c->cipher->cleanup(c)) return 0;
 		}
 	OPENSSL_free(c->cipher_data);
+	if (c->engine)
+		/* The EVP_CIPHER we used belongs to an ENGINE, release the
+		 * functional reference we held for this reason. */
+		ENGINE_finish(c->engine);
 	memset(c,0,sizeof(EVP_CIPHER_CTX));
 	return 1;
 	}

crypto/evp/evp_err.c

@@ -71,6 +71,7 @@ static ERR_STRING_DATA EVP_str_functs[]=
 {ERR_PACK(0,EVP_F_EVP_CIPHER_CTX_CTRL,0),	"EVP_CIPHER_CTX_ctrl"},
 {ERR_PACK(0,EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH,0),	"EVP_CIPHER_CTX_set_key_length"},
 {ERR_PACK(0,EVP_F_EVP_DECRYPTFINAL,0),	"EVP_DecryptFinal"},
+{ERR_PACK(0,EVP_F_EVP_DIGESTINIT,0),	"EVP_DigestInit"},
 {ERR_PACK(0,EVP_F_EVP_ENCRYPTFINAL,0),	"EVP_EncryptFinal"},
 {ERR_PACK(0,EVP_F_EVP_MD_CTX_COPY,0),	"EVP_MD_CTX_copy"},
 {ERR_PACK(0,EVP_F_EVP_OPENINIT,0),	"EVP_OpenInit"},
@@ -121,6 +122,7 @@ static ERR_STRING_DATA EVP_str_reasons[]=
 {EVP_R_KEYGEN_FAILURE                    ,"keygen failure"},
 {EVP_R_MISSING_PARAMETERS                ,"missing parameters"},
 {EVP_R_NO_CIPHER_SET                     ,"no cipher set"},
+{EVP_R_NO_DIGEST_SET                     ,"no digest set"},
 {EVP_R_NO_DSA_PARAMETERS                 ,"no dsa parameters"},
 {EVP_R_NO_SIGN_FUNCTION_CONFIGURED       ,"no sign function configured"},
 {EVP_R_NO_VERIFY_FUNCTION_CONFIGURED     ,"no verify function configured"},

crypto/evp/evp_test.c

@@ -309,6 +309,14 @@ int main(int argc,char **argv)
     OpenSSL_add_all_digests();
     /* Load all compiled-in ENGINEs */
     ENGINE_load_builtin_engines();
+    /* Register all available ENGINE implementations of ciphers and digests.
+     * This could perhaps be changed to "ENGINE_register_all_complete()"? */
+    ENGINE_register_all_ciphers();
+    ENGINE_register_all_digests();
+    /* If we add command-line options, this statement should be switchable.
+     * It'll prevent ENGINEs being ENGINE_init()ialised for cipher/digest use if
+     * they weren't already initialised. */
+    /* ENGINE_set_cipher_flags(ENGINE_CIPHER_FLAG_NOINIT); */
 
     for( ; ; )
 	{

crypto/evp/openbsd_hw.c

@@ -52,6 +52,12 @@
 #include <openssl/rsa.h>
 #include "evp_locl.h"
 
+/* This stuff should now all be supported through
+ * crypto/engine/hw_openbsd_dev_crypto.c unless I botched it up */
+static void *dummy=&dummy;
+
+#if 0
+
 /* check flag after OpenSSL headers to ensure make depend works */
 #ifdef OPENSSL_OPENBSD_DEV_CRYPTO
 
@@ -437,3 +443,4 @@ const EVP_MD *EVP_dev_crypto_md5(void)
     { return &md5_md; }
 
 #endif
+#endif