Initial definitions and a few functions for EVP_PKEY_METHOD: an extension

of the EVP routines to public key algorithms.

4 files changed, 220 insertions, 2 deletions

diff --git a/crypto/evp/Makefile b/crypto/evp/Makefile
index 310fff4257..f6476d88bc 100644
--- a/crypto/evp/Makefile
+++ b/crypto/evp/Makefile
@@ -28,7 +28,7 @@ LIBSRC= encode.c digest.c evp_enc.c evp_key.c evp_acnf.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 \
-	e_old.c
+	e_old.c pmeth_lib.c
 
 LIBOBJ=	encode.o digest.o evp_enc.o evp_key.o evp_acnf.o \
 	e_des.o e_bf.o e_idea.o e_des3.o \
@@ -40,7 +40,7 @@ LIBOBJ=	encode.o digest.o evp_enc.o evp_key.o evp_acnf.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 \
-	e_old.o
+	e_old.o pmeth_lib.o
 
 SRC= $(LIBSRC)
 
diff --git a/crypto/evp/evp.h b/crypto/evp/evp.h
index d06904b7ec..7d16da8f04 100644
--- a/crypto/evp/evp.h
+++ b/crypto/evp/evp.h
@@ -129,6 +129,7 @@ struct evp_pkey_st
 	int save_type;
 	int references;
 	const EVP_PKEY_ASN1_METHOD *ameth;
+	const EVP_PKEY_METHOD *pmeth;
 	union	{
 		char *ptr;
 #ifndef OPENSSL_NO_RSA
diff --git a/crypto/evp/evp_locl.h b/crypto/evp/evp_locl.h
index 2204e345ad..af02514252 100644
--- a/crypto/evp/evp_locl.h
+++ b/crypto/evp/evp_locl.h
@@ -234,3 +234,74 @@ const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
 			     EVP_CIPHER_set_asn1_iv, \
 			     EVP_CIPHER_get_asn1_iv, \
 			     NULL)
+
+
+struct evp_pkey_ctx_st
+	{
+	/* Method associated with this operation */
+	const EVP_PKEY_METHOD *pmeth;
+	/* Key: may be NULL */
+	EVP_PKEY *pkey;
+	/* Actual operation */
+	int operation;
+	/* Algorithm specific data */
+	void *data;
+	} /* EVP_PKEY_CTX */;
+
+#define EVP_PKEY_OP_UNDEFINED		0
+#define EVP_PKEY_OP_PARAMGEN		1
+#define EVP_PKEY_OP_KEYGEN		2
+#define EVP_PKEY_OP_SIGN		3
+#define EVP_PKEY_OP_VERIFY		4
+#define EVP_PKEY_OP_VERIFYRECOVER	5
+#define EVP_PKEY_OP_SIGNCTX		6
+#define EVP_PKEY_OP_VERIFYCTX		7
+#define EVP_PKEY_OP_ENCRYPT		8
+#define EVP_PKEY_OP_DECRYPT		9
+
+struct evp_pkey_method_st
+	{
+	int pkey_id;
+	int (*paramgen_init)(EVP_PKEY_CTX *ctx);
+	int (*paramgen)(EVP_PKEY *key, EVP_PKEY_CTX *ctx);
+
+	int (*keygen_init)(EVP_PKEY_CTX *ctx);
+	int (*keygen)(EVP_PKEY *key, EVP_PKEY_CTX *ctx);
+
+	int (*sign_init)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
+	int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, int *siglen,
+					unsigned char *tbs, int tbslen);
+
+	int (*verify_init)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
+	int (*verify)(EVP_PKEY_CTX *ctx, unsigned char *sig, int siglen,
+					unsigned char *tbs, int tbslen);
+
+	int (*verify_recover_init)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
+	int (*verify_recover)(EVP_PKEY_CTX *ctx,
+					unsigned char *rout, int *routlen,
+					unsigned char *sig, int siglen);
+
+	int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx,
+					EVP_PKEY *pkey);
+	int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, int *siglen,
+					EVP_MD_CTX *mctx);
+
+	int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx,
+							EVP_PKEY *pkey);
+	int (*verifyctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, int siglen,
+					EVP_MD_CTX *mctx);
+
+	int (*encrypt_init)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
+	int (*encrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, int *outlen,
+					unsigned char *in, int inlen);
+
+	int (*decrypt_init)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
+	int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, int *outlen,
+					unsigned char *in, int inlen);
+
+	int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
+	int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value);
+
+	void (*cleanup)(EVP_PKEY_CTX *ctx);
+
+	} /* EVP_PKEY_METHOD */;
diff --git a/crypto/evp/pmeth_lib.c b/crypto/evp/pmeth_lib.c
new file mode 100644
index 0000000000..1830ea1a6d
--- /dev/null
+++ b/crypto/evp/pmeth_lib.c
@@ -0,0 +1,146 @@
+/* pmeth_lib.c */
+/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * 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 above 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 acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <openssl/objects.h>
+#include "cryptlib.h"
+#include "evp_locl.h"
+
+STACK *app_pkey_methods = NULL;
+
+extern EVP_PKEY_METHOD rsa_pkey_meth;
+
+const EVP_PKEY_METHOD *standard_methods[] =
+	{
+	&rsa_pkey_meth
+	};
+
+static int pmeth_cmp(const EVP_PKEY_METHOD * const *a,
+                const EVP_PKEY_METHOD * const *b)
+	{
+        return ((*a)->pkey_id - (*b)->pkey_id);
+	}
+
+const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type, ENGINE *e)
+	{
+	EVP_PKEY_METHOD tmp, *t = &tmp, **ret;
+	tmp.pkey_id = type;
+	if (app_pkey_methods)
+		{
+		int idx;
+		idx = sk_find(app_pkey_methods, (char *)&tmp);
+		if (idx >= 0)
+			return (EVP_PKEY_METHOD *)
+				sk_value(app_pkey_methods, idx);
+		}
+	ret = (EVP_PKEY_METHOD **) OBJ_bsearch((char *)&t,
+        		(char *)standard_methods,
+			sizeof(standard_methods)/sizeof(EVP_PKEY_METHOD *),
+        		sizeof(EVP_PKEY_METHOD *),
+			(int (*)(const void *, const void *))pmeth_cmp);
+	if (!ret || !*ret)
+		return NULL;
+	return *ret;
+	}
+
+EVP_PKEY_CTX *EVP_PKEY_CTX_new(int ktype, ENGINE *e)
+	{
+	EVP_PKEY_CTX *ret;
+	const EVP_PKEY_METHOD *pmeth;
+	pmeth = EVP_PKEY_meth_find(ktype, e);
+	if (pmeth == NULL)
+		return NULL;
+	ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
+	ret->pmeth = pmeth;
+	ret->operation = EVP_PKEY_OP_UNDEFINED;
+	ret->pkey = NULL;
+	ret->data = NULL;
+
+	return ret;
+	}
+
+int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
+				int cmd, int p1, void *p2)
+	{
+	if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl)
+		return -2;
+	if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
+		return -1;
+
+	if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
+		{
+		/* Not initialized */
+		return -1;
+		}
+
+	if ((optype != -1) && (ctx->operation != optype))
+		{
+		/* Invalid operation type */
+		return -1;
+		}
+
+	return ctx->pmeth->ctrl(ctx, cmd, p1, p2);
+
+	}
+
+
+
+
+
+