mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-22 09:13:22 +02:00
361 lines
7.3 KiB
C
361 lines
7.3 KiB
C
/*
|
|
* pgp.c
|
|
* Various utility stuff.
|
|
*
|
|
* Copyright (c) 2005 Marko Kreen
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS 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 AUTHOR OR 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.
|
|
*
|
|
* contrib/pgcrypto/pgp.c
|
|
*/
|
|
|
|
#include "postgres.h"
|
|
|
|
#include "px.h"
|
|
#include "mbuf.h"
|
|
#include "pgp.h"
|
|
|
|
/*
|
|
* Defaults.
|
|
*/
|
|
static int def_cipher_algo = PGP_SYM_AES_128;
|
|
static int def_s2k_cipher_algo = -1;
|
|
static int def_s2k_mode = PGP_S2K_ISALTED;
|
|
static int def_s2k_digest_algo = PGP_DIGEST_SHA1;
|
|
static int def_compress_algo = PGP_COMPR_NONE;
|
|
static int def_compress_level = 6;
|
|
static int def_disable_mdc = 0;
|
|
static int def_use_sess_key = 0;
|
|
static int def_text_mode = 0;
|
|
static int def_unicode_mode = 0;
|
|
static int def_convert_crlf = 0;
|
|
|
|
struct digest_info
|
|
{
|
|
const char *name;
|
|
int code;
|
|
const char *int_name;
|
|
};
|
|
|
|
struct cipher_info
|
|
{
|
|
const char *name;
|
|
int code;
|
|
const char *int_name;
|
|
int key_len;
|
|
int block_len;
|
|
};
|
|
|
|
static const struct digest_info digest_list[] = {
|
|
{"md5", PGP_DIGEST_MD5},
|
|
{"sha1", PGP_DIGEST_SHA1},
|
|
{"sha-1", PGP_DIGEST_SHA1},
|
|
{"ripemd160", PGP_DIGEST_RIPEMD160},
|
|
{"sha256", PGP_DIGEST_SHA256},
|
|
{"sha384", PGP_DIGEST_SHA384},
|
|
{"sha512", PGP_DIGEST_SHA512},
|
|
{NULL, 0}
|
|
};
|
|
|
|
static const struct cipher_info cipher_list[] = {
|
|
{"3des", PGP_SYM_DES3, "3des-ecb", 192 / 8, 64 / 8},
|
|
{"cast5", PGP_SYM_CAST5, "cast5-ecb", 128 / 8, 64 / 8},
|
|
{"bf", PGP_SYM_BLOWFISH, "bf-ecb", 128 / 8, 64 / 8},
|
|
{"blowfish", PGP_SYM_BLOWFISH, "bf-ecb", 128 / 8, 64 / 8},
|
|
{"aes", PGP_SYM_AES_128, "aes-ecb", 128 / 8, 128 / 8},
|
|
{"aes128", PGP_SYM_AES_128, "aes-ecb", 128 / 8, 128 / 8},
|
|
{"aes192", PGP_SYM_AES_192, "aes-ecb", 192 / 8, 128 / 8},
|
|
{"aes256", PGP_SYM_AES_256, "aes-ecb", 256 / 8, 128 / 8},
|
|
{"twofish", PGP_SYM_TWOFISH, "twofish-ecb", 256 / 8, 128 / 8},
|
|
{NULL, 0, NULL}
|
|
};
|
|
|
|
static const struct cipher_info *
|
|
get_cipher_info(int code)
|
|
{
|
|
const struct cipher_info *i;
|
|
|
|
for (i = cipher_list; i->name; i++)
|
|
if (i->code == code)
|
|
return i;
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
pgp_get_digest_code(const char *name)
|
|
{
|
|
const struct digest_info *i;
|
|
|
|
for (i = digest_list; i->name; i++)
|
|
if (pg_strcasecmp(i->name, name) == 0)
|
|
return i->code;
|
|
return PXE_PGP_UNSUPPORTED_HASH;
|
|
}
|
|
|
|
int
|
|
pgp_get_cipher_code(const char *name)
|
|
{
|
|
const struct cipher_info *i;
|
|
|
|
for (i = cipher_list; i->name; i++)
|
|
if (pg_strcasecmp(i->name, name) == 0)
|
|
return i->code;
|
|
return PXE_PGP_UNSUPPORTED_CIPHER;
|
|
}
|
|
|
|
const char *
|
|
pgp_get_digest_name(int code)
|
|
{
|
|
const struct digest_info *i;
|
|
|
|
for (i = digest_list; i->name; i++)
|
|
if (i->code == code)
|
|
return i->name;
|
|
return NULL;
|
|
}
|
|
|
|
const char *
|
|
pgp_get_cipher_name(int code)
|
|
{
|
|
const struct cipher_info *i = get_cipher_info(code);
|
|
|
|
if (i != NULL)
|
|
return i->name;
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
pgp_get_cipher_key_size(int code)
|
|
{
|
|
const struct cipher_info *i = get_cipher_info(code);
|
|
|
|
if (i != NULL)
|
|
return i->key_len;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pgp_get_cipher_block_size(int code)
|
|
{
|
|
const struct cipher_info *i = get_cipher_info(code);
|
|
|
|
if (i != NULL)
|
|
return i->block_len;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pgp_load_cipher(int code, PX_Cipher **res)
|
|
{
|
|
int err;
|
|
const struct cipher_info *i = get_cipher_info(code);
|
|
|
|
if (i == NULL)
|
|
return PXE_PGP_CORRUPT_DATA;
|
|
|
|
err = px_find_cipher(i->int_name, res);
|
|
if (err == 0)
|
|
return 0;
|
|
|
|
return PXE_PGP_UNSUPPORTED_CIPHER;
|
|
}
|
|
|
|
int
|
|
pgp_load_digest(int code, PX_MD **res)
|
|
{
|
|
int err;
|
|
const char *name = pgp_get_digest_name(code);
|
|
|
|
if (name == NULL)
|
|
return PXE_PGP_CORRUPT_DATA;
|
|
|
|
err = px_find_digest(name, res);
|
|
if (err == 0)
|
|
return 0;
|
|
|
|
return PXE_PGP_UNSUPPORTED_HASH;
|
|
}
|
|
|
|
int
|
|
pgp_init(PGP_Context **ctx_p)
|
|
{
|
|
PGP_Context *ctx;
|
|
|
|
ctx = px_alloc(sizeof *ctx);
|
|
memset(ctx, 0, sizeof *ctx);
|
|
|
|
ctx->cipher_algo = def_cipher_algo;
|
|
ctx->s2k_cipher_algo = def_s2k_cipher_algo;
|
|
ctx->s2k_mode = def_s2k_mode;
|
|
ctx->s2k_digest_algo = def_s2k_digest_algo;
|
|
ctx->compress_algo = def_compress_algo;
|
|
ctx->compress_level = def_compress_level;
|
|
ctx->disable_mdc = def_disable_mdc;
|
|
ctx->use_sess_key = def_use_sess_key;
|
|
ctx->unicode_mode = def_unicode_mode;
|
|
ctx->convert_crlf = def_convert_crlf;
|
|
ctx->text_mode = def_text_mode;
|
|
|
|
*ctx_p = ctx;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pgp_free(PGP_Context *ctx)
|
|
{
|
|
if (ctx->pub_key)
|
|
pgp_key_free(ctx->pub_key);
|
|
memset(ctx, 0, sizeof *ctx);
|
|
px_free(ctx);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pgp_disable_mdc(PGP_Context *ctx, int disable)
|
|
{
|
|
ctx->disable_mdc = disable ? 1 : 0;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pgp_set_sess_key(PGP_Context *ctx, int use)
|
|
{
|
|
ctx->use_sess_key = use ? 1 : 0;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pgp_set_convert_crlf(PGP_Context *ctx, int doit)
|
|
{
|
|
ctx->convert_crlf = doit ? 1 : 0;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pgp_set_s2k_mode(PGP_Context *ctx, int mode)
|
|
{
|
|
int err = PXE_OK;
|
|
|
|
switch (mode)
|
|
{
|
|
case PGP_S2K_SIMPLE:
|
|
case PGP_S2K_SALTED:
|
|
case PGP_S2K_ISALTED:
|
|
ctx->s2k_mode = mode;
|
|
break;
|
|
default:
|
|
err = PXE_ARGUMENT_ERROR;
|
|
break;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
int
|
|
pgp_set_compress_algo(PGP_Context *ctx, int algo)
|
|
{
|
|
switch (algo)
|
|
{
|
|
case PGP_COMPR_NONE:
|
|
case PGP_COMPR_ZIP:
|
|
case PGP_COMPR_ZLIB:
|
|
case PGP_COMPR_BZIP2:
|
|
ctx->compress_algo = algo;
|
|
return 0;
|
|
}
|
|
return PXE_ARGUMENT_ERROR;
|
|
}
|
|
|
|
int
|
|
pgp_set_compress_level(PGP_Context *ctx, int level)
|
|
{
|
|
if (level >= 0 && level <= 9)
|
|
{
|
|
ctx->compress_level = level;
|
|
return 0;
|
|
}
|
|
return PXE_ARGUMENT_ERROR;
|
|
}
|
|
|
|
int
|
|
pgp_set_text_mode(PGP_Context *ctx, int mode)
|
|
{
|
|
ctx->text_mode = mode;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pgp_set_cipher_algo(PGP_Context *ctx, const char *name)
|
|
{
|
|
int code = pgp_get_cipher_code(name);
|
|
|
|
if (code < 0)
|
|
return code;
|
|
ctx->cipher_algo = code;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pgp_set_s2k_cipher_algo(PGP_Context *ctx, const char *name)
|
|
{
|
|
int code = pgp_get_cipher_code(name);
|
|
|
|
if (code < 0)
|
|
return code;
|
|
ctx->s2k_cipher_algo = code;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pgp_set_s2k_digest_algo(PGP_Context *ctx, const char *name)
|
|
{
|
|
int code = pgp_get_digest_code(name);
|
|
|
|
if (code < 0)
|
|
return code;
|
|
ctx->s2k_digest_algo = code;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pgp_get_unicode_mode(PGP_Context *ctx)
|
|
{
|
|
return ctx->unicode_mode;
|
|
}
|
|
|
|
int
|
|
pgp_set_unicode_mode(PGP_Context *ctx, int mode)
|
|
{
|
|
ctx->unicode_mode = mode ? 1 : 0;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pgp_set_symkey(PGP_Context *ctx, const uint8 *key, int len)
|
|
{
|
|
if (key == NULL || len < 1)
|
|
return PXE_ARGUMENT_ERROR;
|
|
ctx->sym_key = key;
|
|
ctx->sym_key_len = len;
|
|
return 0;
|
|
}
|