update paillier kmeth and ameth

crypto/paillier/pai_pmeth.c

@@ -1,33 +1,153 @@
+/* ====================================================================
+ * Copyright (c) 2015 - 2017 The GmSSL 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 GmSSL Project.
+ *    (http://gmssl.org/)"
+ *
+ * 4. The name "GmSSL Project" must not be used to endorse or promote
+ *    products derived from this software without prior written
+ *    permission. For written permission, please contact
+ *    guanzhi1980@gmail.com.
+ *
+ * 5. Products derived from this software may not be called "GmSSL"
+ *    nor may "GmSSL" appear in their names without prior written
+ *    permission of the GmSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the GmSSL Project
+ *    (http://gmssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE GmSSL 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 GmSSL 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.
+ * ====================================================================
+ */
 
+#include <stdio.h>
+#include <openssl/evp.h>
+#include <openssl/paillier.h>
+#include "internal/evp_int.h"
 
-
-
-
+typedef struct {
+	int flags;
+} PAILLIER_PKEY_CTX;
 
 static int pkey_paillier_init(EVP_PKEY_CTX *ctx)
 {
-	return 0;
+	return 1;
 }
 
 static int pkey_paillier_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
 {
-	return 0;
+	return 1;
 }
 
 static void pkey_paillier_cleanup(EVP_PKEY_CTX *ctx)
 {
 }
 
+//FIXME keygen
+
+
 static int pkey_paillier_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
-    const unsigned char *in, size_t inlen)
+	const unsigned char *in, size_t inlen)
 {
-	return 0;
+	int ret = 0;
+	PAILLIER *key = ctx->pkey->pkey.paillier;
+	BIGNUM *m = NULL;
+	BIGNUM *c = NULL;
+
+	//FIXME: check inlen
+
+	if (!out) {
+		*outlen = PAILLIER_size(key);
+		return 1;
+	} else if (*outlen < (size_t)PAILLIER_size(key)) {
+		PAILLIERerr(PAILLIER_F_PKEY_PAILLIER_ENCRYPT, PAILLIER_R_BUFFER_TOO_SMALL);
+		return 0;
+	}
+
+	if (!(m = BN_new()) || !(c = BN_new())) {
+		PAILLIERerr(PAILLIER_F_PKEY_PAILLIER_ENCRYPT, ERR_R_MALLOC_FAILURE);
+		goto end;
+	}
+
+	if (!BN_bin2bn(in, (int)inlen, m)) {
+		PAILLIERerr(PAILLIER_F_PKEY_PAILLIER_ENCRYPT, ERR_R_BN_LIB);
+		goto end;
+	}
+	if (!PAILLIER_encrypt(c, m, key)) {
+		goto end;
+	}
+
+	*outlen = BN_bn2bin(c, out);
+	ret = 1;
+
+end:
+	BN_free(m);
+	BN_free(c);
+	return ret;
 }
 
 static int pkey_paillier_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
-    const unsigned char *in, size_t inlen)
+	const unsigned char *in, size_t inlen)
 {
-	return 0;
+	int ret = 0;
+	PAILLIER *key = ctx->pkey->pkey.paillier;
+	BIGNUM *m = NULL;
+	BIGNUM *c = NULL;
+
+	if (!out) {
+		*outlen = PAILLIER_size(key);
+		return 1;
+	} else if (*outlen < (size_t)PAILLIER_size(key)) {
+		PAILLIERerr(PAILLIER_F_PKEY_PAILLIER_DECRYPT, PAILLIER_R_BUFFER_TOO_SMALL);
+		return 0;
+	}
+
+	if (!(m = BN_new()) || !(c = BN_new())) {
+		PAILLIERerr(PAILLIER_F_PKEY_PAILLIER_DECRYPT, ERR_R_MALLOC_FAILURE);
+		goto end;
+	}
+
+	if (!BN_bin2bn(in, (int)inlen, c)) {
+		PAILLIERerr(PAILLIER_F_PKEY_PAILLIER_ENCRYPT, ERR_R_BN_LIB);
+		goto end;
+	}
+	if (!PAILLIER_decrypt(m, c, key)) {
+		goto end;
+	}
+
+	*outlen = BN_bn2bin(m, out);
+	ret = 1;
+end:
+	BN_free(m);
+	BN_free(c);
+	return ret;
 }
 
 static int pkey_paillier_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
@@ -41,6 +161,9 @@ static int pkey_paillier_ctrl_str(EVP_PKEY_CTX *ctx,
 	return 0;
 }
 
+#define EVP_PKEY_PAILLIER NID_paillier
+
+
 const EVP_PKEY_METHOD paillier_pmeth = {
 	EVP_PKEY_PAILLIER,
 	0,