Sunyard/gateway2
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
faeec0af4d
gateway2/Tongsuo-8.4.0/apps/paillier.c
cheney faeec0af4d 编译
2026-07-11 13:40:57 +08:00

633 lines
18 KiB
C
Raw Blame History

/*
* Copyright 2022 The Tongsuo Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://github.com/Tongsuo-Project/Tongsuo/blob/master/LICENSE.txt
*/
#include <openssl/opensslconf.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "apps.h"
#include "progs.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/bn.h>
#include <openssl/pem.h>
#include <openssl/rand.h>
#include <openssl/paillier.h>
#include <internal/cryptlib.h>
static int verbose = 0, noout = 0;
typedef enum OPTION_choice {
OPT_COMMON,
OPT_KEYGEN, OPT_PUBGEN,
OPT_KEY, OPT_PUB,
OPT_ENCRYPT, OPT_DECRYPT, OPT_ADD, OPT_ADD_PLAIN, OPT_SUB, OPT_MUL,
OPT_IN, OPT_KEY_IN,
OPT_OUT, OPT_NOOUT,
OPT_TEXT, OPT_VERBOSE,
OPT_PROV_ENUM
} OPTION_CHOICE;
const OPTIONS paillier_options[] = {
{OPT_HELP_STR, 1, '-', "Usage: %s [action options] [input/output options] [arg1] [arg2]\n"},
OPT_SECTION("General"),
{"help", OPT_HELP, '-', "Display this summary"},
OPT_SECTION("Action"),
{"keygen", OPT_KEYGEN, '-', "Generate a paillier private key, usage: -keygen 2048, 2048 is the size of key in bits "},
{"pubgen", OPT_PUBGEN, '-', "Generate a paillier public key"},
{"key", OPT_KEY, '-', "Display/Parse a paillier private key"},
{"pub", OPT_PUB, '-', "Display/Parse a paillier public key"},
{"encrypt", OPT_ENCRYPT, '-', "Encrypt a number with the paillier public key, usage: -encrypt 99, 99 is an example number"},
{"decrypt", OPT_DECRYPT, '-', "Decrypt a ciphertext using the paillier private key, usage: -decrypt c1, c1 is an example ciphertext"},
{"add", OPT_ADD, '-', "Paillier homomorphic addition: add two ciphertexts, usage: -add c1 c2, c1 and c2 are tow example ciphertexts, result: E(c1) + E(c2)"},
{"add_plain", OPT_ADD_PLAIN, '-', "Paillier homomorphic addition: add a ciphertext to a plaintext, usage: -add_plain c1 99, c1 is an example ciphertext, 99 is an example number, result: E(c1) + 99"},
{"sub", OPT_SUB, '-', "Paillier homomorphic subtraction: sub two ciphertexts, usage: -sub c1 c2, c1 and c2 are tow example ciphertexts, result: E(c1) - E(c2)"},
{"mul", OPT_MUL, '-', "Paillier homomorphic scalar multiplication: multiply a ciphertext by a known plaintext, usage: -mul c1 99, c1 is an example ciphertext, 99 is an example number, result: E(c1) * 99"},
OPT_SECTION("Input"),
{"in", OPT_IN, 's', "Input file"},
{"key_in", OPT_KEY_IN, 's', "Input is a paillier private key used to generate public key"},
OPT_SECTION("Output"),
{"out", OPT_OUT, '>', "Output the paillier key to specified file"},
{"noout", OPT_NOOUT, '-', "Don't print paillier key out"},
{"text", OPT_TEXT, '-', "Print the paillier key in text"},
{"verbose", OPT_VERBOSE, '-', "Verbose output"},
OPT_PARAMETERS(),
{"arg1", 0, 0, "Argument for keygen/encryption/decryption, or the first argument of a homomorphic operation"},
{"arg2", 0, 0, "The second argument of a homomorphic operation"},
{NULL}
};
static int paillier_buf2hexstr_print(BIO *bio, unsigned char *buf, size_t size,
char *field, int text)
{
unsigned char *out = NULL;
size_t out_n;
BIO_printf(bio, "%s: ", field);
if (text) {
BIO_puts(bio, "\n");
BIO_indent(bio, 4, 4);
BIO_hex_string(bio, 4, 16, buf, size);
} else {
out_n = size * 2 + 1;
if (!(out = OPENSSL_zalloc(out_n))
|| !OPENSSL_buf2hexstr_ex((char *)out, out_n, NULL, buf, size, '\0')) {
OPENSSL_free(out);
return 0;
}
BIO_printf(bio, "%s", out);
OPENSSL_free(out);
}
BIO_puts(bio, "\n");
return 1;
}
static int paillier_ciphertext_print(BIO *bio, PAILLIER_CTX *ctx,
PAILLIER_CIPHERTEXT *c,
char *field, int text)
{
int ret = 0;
size_t size;
unsigned char *buf = NULL;
size = PAILLIER_CIPHERTEXT_encode(ctx, NULL, 0, c, 0);
if (!(buf = OPENSSL_zalloc(size)))
goto end;
if (!PAILLIER_CIPHERTEXT_encode(ctx, buf, size, c, 0))
goto end;
ret = paillier_buf2hexstr_print(bio, buf, size, field, text);
end:
OPENSSL_free(buf);
return ret;
}
static int paillier_keygen(char *outfile, int bits, int text)
{
int ret = 0;
BIO *bio = NULL;
PAILLIER_KEY *pail_key = NULL;
pail_key = PAILLIER_KEY_new();
if (pail_key == NULL
|| !PAILLIER_KEY_generate_key(pail_key, bits))
goto end;
if (!(bio = bio_open_owner(outfile, FORMAT_PEM, 1)))
goto end;
if (text && !PAILLIER_KEY_print(bio, pail_key, 0))
goto end;
if (!PEM_write_bio_PAILLIER_PrivateKey(bio, pail_key))
goto end;
ret = 1;
end:
BIO_free(bio);
PAILLIER_KEY_free(pail_key);
return ret;
}
static int paillier_pubgen(PAILLIER_KEY *key, char *outfile, int text)
{
int ret = 0;
BIO *bio = NULL;
if (key == NULL || !(bio = bio_open_owner(outfile, FORMAT_PEM, 1)))
goto end;
if (text && !PAILLIER_KEY_print(bio, key, 0))
goto end;
if (!PEM_write_bio_PAILLIER_PublicKey(bio, key))
goto end;
ret = 1;
end:
BIO_free(bio);
return ret;
}
static int paillier_print(PAILLIER_KEY *key, char *outfile, int text)
{
int ret = 0;
BIO *bio = NULL;
if (key == NULL
|| !(bio = bio_open_owner(outfile, FORMAT_PEM, 1)))
goto end;
if (text && !PAILLIER_KEY_print(bio, key, 0))
goto end;
if (!noout) {
BIO_printf(bio_err, "writing paillier key\n");
if (PAILLIER_KEY_type(key) == PAILLIER_KEY_TYPE_PRIVATE) {
if (!PEM_write_bio_PAILLIER_PrivateKey(bio, key))
goto end;
} else if (!PEM_write_bio_PAILLIER_PublicKey(bio, key))
goto end;
}
ret = 1;
end:
BIO_free(bio);
return ret;
}
static int paillier_encrypt(PAILLIER_CTX *ctx, int plain, char *outfile, int text)
{
BIO *bio = NULL;
int ret = 0;
PAILLIER_CIPHERTEXT *r = NULL;
if (ctx == NULL || !(bio = bio_open_owner(outfile, FORMAT_PEM, 1)))
goto end;
if (!(r = PAILLIER_CIPHERTEXT_new(ctx)))
goto end;
if (!PAILLIER_encrypt(ctx, r, plain))
goto end;
BIO_puts(bio, "paillier encrypt\n");
BIO_printf(bio, "plaintext: %d\n", plain);
ret = paillier_ciphertext_print(bio, ctx, r, "ciphertext", text);
end:
PAILLIER_CIPHERTEXT_free(r);
BIO_free(bio);
return ret;
}
static int paillier_decrypt(PAILLIER_CTX *ctx, char *ciphertext,
char *outfile, int text)
{
BIO *bio = NULL;
int ret = 0;
unsigned char *buf = NULL;
size_t buf_n, len;
int32_t r = 0;
PAILLIER_CIPHERTEXT *c = NULL;
if (ctx == NULL || ciphertext == NULL || !(bio = bio_open_owner(outfile, FORMAT_PEM, 1)))
goto end;
buf_n = strlen(ciphertext) / 2;
if (buf_n < 1)
goto end;
if (!(buf = OPENSSL_zalloc(buf_n))
|| !OPENSSL_hexstr2buf_ex(buf, buf_n, &len, ciphertext, '\0')
|| !(c = PAILLIER_CIPHERTEXT_new(ctx))
|| !PAILLIER_CIPHERTEXT_decode(ctx, c, buf, len)
|| !PAILLIER_decrypt(ctx, &r, c))
goto end;
BIO_puts(bio, "paillier decrypt\n");
ret = paillier_buf2hexstr_print(bio, buf, len, "ciphertext", text);
BIO_printf(bio, "plaintext: %d\n", r);
end:
OPENSSL_free(buf);
PAILLIER_CIPHERTEXT_free(c);
BIO_free(bio);
return ret;
}
static int paillier_add(PAILLIER_CTX *ctx, char *in1, char *in2,
char *outfile, int text)
{
BIO *bio = NULL;
int ret = 0;
size_t buf1_n, buf2_n, len1, len2;
unsigned char *buf1 = NULL, *buf2 = NULL;
PAILLIER_CIPHERTEXT *r = NULL, *c1 = NULL, *c2 = NULL;
if (ctx == NULL || in1 == NULL || in2 == NULL || !(bio = bio_open_owner(outfile, FORMAT_PEM, 1)))
goto end;
buf1_n = strlen(in1) / 2;
buf2_n = strlen(in2) / 2;
if (buf1_n <= 1 || buf2_n <= 1)
goto end;
if (!(buf1 = OPENSSL_zalloc(buf1_n))
|| !(buf2 = OPENSSL_zalloc(buf2_n))
|| !OPENSSL_hexstr2buf_ex(buf1, buf1_n, &len1, in1, '\0')
|| !OPENSSL_hexstr2buf_ex(buf2, buf2_n, &len2, in2, '\0')
|| !(r = PAILLIER_CIPHERTEXT_new(ctx))
|| !(c1 = PAILLIER_CIPHERTEXT_new(ctx))
|| !(c2 = PAILLIER_CIPHERTEXT_new(ctx))
|| !PAILLIER_CIPHERTEXT_decode(ctx, c1, buf1, len1)
|| !PAILLIER_CIPHERTEXT_decode(ctx, c2, buf2, len2)
|| !PAILLIER_add(ctx, r, c1, c2))
goto end;
BIO_puts(bio, "paillier add (result = c1 + c2)\n");
BIO_printf(bio, "c1: %s\n", in1);
BIO_printf(bio, "c2: %s\n", in2);
ret = paillier_ciphertext_print(bio, ctx, r, "result", text);
end:
OPENSSL_free(buf1);
OPENSSL_free(buf2);
PAILLIER_CIPHERTEXT_free(c1);
PAILLIER_CIPHERTEXT_free(c2);
PAILLIER_CIPHERTEXT_free(r);
BIO_free(bio);
return ret;
}
static int paillier_add_plain(PAILLIER_CTX *ctx, char *in1, int32_t plain,
char *outfile, int text)
{
BIO *bio = NULL;
int ret = 0;
size_t buf1_n, len1;
unsigned char *buf1 = NULL;
PAILLIER_CIPHERTEXT *r = NULL, *c1 = NULL;
if (ctx == NULL || in1 == NULL || !(bio = bio_open_owner(outfile, FORMAT_PEM, 1)))
goto end;
buf1_n = strlen(in1) / 2;
if (buf1_n <= 1)
goto end;
if (!(buf1 = OPENSSL_zalloc(buf1_n))
|| !OPENSSL_hexstr2buf_ex(buf1, buf1_n, &len1, in1, '\0')
|| !(r = PAILLIER_CIPHERTEXT_new(ctx))
|| !(c1 = PAILLIER_CIPHERTEXT_new(ctx))
|| !PAILLIER_CIPHERTEXT_decode(ctx, c1, buf1, len1)
|| !PAILLIER_add_plain(ctx, r, c1, plain))
goto end;
BIO_puts(bio, "paillier addition (result = c1 + plaintext)\n");
BIO_printf(bio, "c1: %s\n", in1);
BIO_printf(bio, "plaintext: %d\n", plain);
ret = paillier_ciphertext_print(bio, ctx, r, "result", text);
end:
OPENSSL_free(buf1);
PAILLIER_CIPHERTEXT_free(c1);
PAILLIER_CIPHERTEXT_free(r);
BIO_free(bio);
return ret;
}
static int paillier_sub(PAILLIER_CTX *ctx, char *in1, char *in2,
char *outfile, int text)
{
BIO *bio = NULL;
int ret = 0;
size_t buf1_n, buf2_n, len1, len2;
unsigned char *buf1 = NULL, *buf2 = NULL;
PAILLIER_CIPHERTEXT *r = NULL, *c1 = NULL, *c2 = NULL;
if (ctx == NULL || in1 == NULL || in2 == NULL || !(bio = bio_open_owner(outfile, FORMAT_PEM, 1)))
goto end;
buf1_n = strlen(in1) / 2;
buf2_n = strlen(in2) / 2;
if (buf1_n <= 1 || buf2_n <= 1)
goto end;
if (!(buf1 = OPENSSL_zalloc(buf1_n))
|| !(buf2 = OPENSSL_zalloc(buf2_n))
|| !OPENSSL_hexstr2buf_ex(buf1, buf1_n, &len1, in1, '\0')
|| !OPENSSL_hexstr2buf_ex(buf2, buf2_n, &len2, in2, '\0')
|| !(r = PAILLIER_CIPHERTEXT_new(ctx))
|| !(c1 = PAILLIER_CIPHERTEXT_new(ctx))
|| !(c2 = PAILLIER_CIPHERTEXT_new(ctx))
|| !PAILLIER_CIPHERTEXT_decode(ctx, c1, buf1, len1)
|| !PAILLIER_CIPHERTEXT_decode(ctx, c2, buf2, len2)
|| !PAILLIER_sub(ctx, r, c1, c2))
goto end;
BIO_puts(bio, "paillier subtraction (result = c1 - c2)\n");
BIO_printf(bio, "c1: %s\n", in1);
BIO_printf(bio, "c2: %s\n", in2);
ret = paillier_ciphertext_print(bio, ctx, r, "result", text);
ret = 1;
end:
OPENSSL_free(buf1);
OPENSSL_free(buf2);
PAILLIER_CIPHERTEXT_free(c1);
PAILLIER_CIPHERTEXT_free(c2);
PAILLIER_CIPHERTEXT_free(r);
BIO_free(bio);
return ret;
}
static int paillier_mul(PAILLIER_CTX *ctx, char *in1, int32_t plain,
char *outfile, int text)
{
BIO *bio = NULL;
int ret = 0;
size_t buf1_n, len1;
unsigned char *buf1 = NULL;
PAILLIER_CIPHERTEXT *r = NULL, *c1 = NULL;
if (ctx == NULL || in1 == NULL || !(bio = bio_open_owner(outfile, FORMAT_PEM, 1)))
goto end;
buf1_n = strlen(in1) / 2;
if (buf1_n <= 1)
goto end;
if (!(buf1 = OPENSSL_zalloc(buf1_n))
|| !OPENSSL_hexstr2buf_ex(buf1, buf1_n, &len1, in1, '\0')
|| !(r = PAILLIER_CIPHERTEXT_new(ctx))
|| !(c1 = PAILLIER_CIPHERTEXT_new(ctx))
|| !PAILLIER_CIPHERTEXT_decode(ctx, c1, buf1, len1)
|| !PAILLIER_mul(ctx, r, c1, plain))
goto end;
BIO_puts(bio, "paillier scalar multiplication (result = c1 * plaintext)\n");
BIO_printf(bio, "c1: %s\n", in1);
BIO_printf(bio, "plaintext: %d\n", plain);
ret = paillier_ciphertext_print(bio, ctx, r, "result", text);
ret = 1;
end:
OPENSSL_free(buf1);
PAILLIER_CIPHERTEXT_free(c1);
PAILLIER_CIPHERTEXT_free(r);
BIO_free(bio);
return ret;
}
int paillier_main(int argc, char **argv)
{
BIO *in = NULL;
PAILLIER_KEY *pail_key = NULL;
PAILLIER_CTX *ctx = NULL;
int ret = 1, action_sum = 0, text = 0;
int keygen = 0, pubgen = 0, key = 0, pub = 0;
int encrypt = 0, decrypt = 0, add = 0, add_plain = 0, sub = 0, mul = 0;
int plain = 0;
char *infile = NULL, *outfile = NULL;
char *prog;
char *arg1 = NULL, *arg2 = NULL;
OPTION_CHOICE o;
prog = opt_init(argc, argv, paillier_options);
if ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp1:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
ret = 0;
opt_help(paillier_options);
goto end;
case OPT_KEYGEN:
keygen = 1;
break;
case OPT_PUBGEN:
pubgen = 1;
break;
case OPT_KEY:
key = 1;
break;
case OPT_PUB:
pub = 1;
break;
case OPT_ENCRYPT:
encrypt = 1;
break;
case OPT_DECRYPT:
decrypt = 1;
break;
case OPT_ADD:
add = 1;
break;
case OPT_ADD_PLAIN:
add_plain = 1;
break;
case OPT_SUB:
sub = 1;
break;
case OPT_MUL:
mul = 1;
break;
default:
goto opthelp1;
}
}
action_sum = keygen + pubgen + key + pub + encrypt + decrypt + add + add_plain + sub + mul;
if (action_sum == 0) {
BIO_printf(bio_err, "No action parameter specified.\n");
goto opthelp1;
} else if (action_sum != 1) {
BIO_printf(bio_err, "Only one action parameter must be specified.\n");
goto opthelp1;
}
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp2:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
ret = 0;
opt_help(paillier_options);
goto end;
case OPT_IN:
case OPT_KEY_IN:
infile = opt_arg();
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_NOOUT:
noout = 1;
break;
case OPT_TEXT:
text = 1;
break;
case OPT_VERBOSE:
verbose = 1;
break;
default:
goto opthelp2;
break;
}
}
/* One optional argument, the bitsize. */
argc = opt_num_rest();
argv = opt_rest();
if (keygen && argc != 1) {
BIO_printf(bio_err, "Extra arguments given.\n");
goto opthelp2;
}
if (argc == 1) {
arg1 = argv[0];
if (encrypt) {
if (*arg1 == '_')
arg1++;
if (!opt_int(arg1, &plain))
goto end;
if (*argv[0] == '_')
plain = -plain;
} else if (keygen) {
if (!opt_int(arg1, &plain) || plain <= 0)
goto end;
}
} else if (argc == 2) {
arg1 = argv[0];
arg2 = argv[1];
if (add_plain || mul) {
if (*arg2 == '_')
arg2++;
if (!opt_int(arg2, &plain))
goto end;
if (*argv[1] == '_')
plain = -plain;
}
} else if (argc > 2) {
BIO_printf(bio_err, "Extra arguments given.\n");
goto opthelp2;
}
if (!app_RAND_load())
goto end;
if (verbose) {
/* TODO */
}
if (infile != NULL) {
in = bio_open_default(infile, 'r', FORMAT_PEM);
if (in == NULL)
goto end;
if (pubgen || key || decrypt) {
if (!(pail_key = PEM_read_bio_PAILLIER_PrivateKey(in, NULL, NULL, NULL)))
goto end;
} else if (pub || encrypt || add || add_plain || sub || mul) {
if (!(pail_key = PEM_read_bio_PAILLIER_PublicKey(in, NULL, NULL, NULL)))
goto end;
}
if (encrypt || decrypt || add || add_plain || sub || mul) {
if (!(ctx = PAILLIER_CTX_new(pail_key, PAILLIER_MAX_THRESHOLD)))
goto end;
}
}
if (keygen)
ret = paillier_keygen(outfile, plain, text);
else if (pubgen)
ret = paillier_pubgen(pail_key, outfile, text);
else if (key || pub)
ret = paillier_print(pail_key, outfile, text);
else if (encrypt)
ret = paillier_encrypt(ctx, plain, outfile, text);
else if (decrypt)
ret = paillier_decrypt(ctx, arg1, outfile, text);
else if (add)
ret = paillier_add(ctx, arg1, arg2, outfile, text);
else if (add_plain)
ret = paillier_add_plain(ctx, arg1, plain, outfile, text);
else if (sub)
ret = paillier_sub(ctx, arg1, arg2, outfile, text);
else if (mul)
ret = paillier_mul(ctx, arg1, plain, outfile, text);
ret = ret ? 0 : 1;
end:
PAILLIER_CTX_free(ctx);
BIO_free_all(in);
PAILLIER_KEY_free(pail_key);
if (ret != 0) {
BIO_printf(bio_err, "May be extra arguments error, please use -help for usage summary.\n");
ERR_print_errors(bio_err);
}
return ret;
}
Reference in New Issue View Git Blame Copy Permalink