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Fix compilation with --disable-curve25519 option

Browse Source 
The fix is to move the two functions to format/parse base64
curve25519 public keys into a new "crypto_format.c" file.  I could
have put them in crypto.c, but that's a big file worth splitting
anyway.

Fixes bug 8153; bugfix on 0.2.4.8-alpha where I did the fix for 7869.
This commit is contained in:
Nick Mathewson 2013-02-04 11:32:55 -05:00
parent ddf2c36ab1
commit 5ea9a90d68
5 changed files with 56 additions and 37 deletions
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3
changes/bug8153 Normal file
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@ -0,0 +1,3 @@
o Minor bugfixes:
- Compile correctly with the --disable-curve25519 option. Fix for
bug 8153; bugfix on 0.2.4.8-alpha.

31
src/common/crypto_curve25519.c
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@ -182,34 +182,3 @@ curve25519_handshake(uint8_t *output,
curve25519_impl(output, skey->secret_key, pkey->public_key);
}
int
curve25519_public_to_base64(char *output,
const curve25519_public_key_t *pkey)
{
char buf[128];
base64_encode(buf, sizeof(buf),
(const char*)pkey->public_key, CURVE25519_PUBKEY_LEN);
buf[CURVE25519_BASE64_PADDED_LEN] = '\0';
memcpy(output, buf, CURVE25519_BASE64_PADDED_LEN+1);
return 0;
}
int
curve25519_public_from_base64(curve25519_public_key_t *pkey,
const char *input)
{
size_t len = strlen(input);
if (len == CURVE25519_BASE64_PADDED_LEN - 1) {
/* not padded */
return digest256_from_base64((char*)pkey->public_key, input);
} else if (len == CURVE25519_BASE64_PADDED_LEN) {
char buf[128];
if (base64_decode(buf, sizeof(buf), input, len) != CURVE25519_PUBKEY_LEN)
return -1;
memcpy(pkey->public_key, buf, CURVE25519_PUBKEY_LEN);
return 0;
} else {
return -1;
}
}

12
src/common/crypto_curve25519.h
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@ -51,6 +51,12 @@ int curve25519_keypair_read_from_file(curve25519_keypair_t *keypair_out,
char **tag_out,
const char *fname);
#ifdef CRYPTO_CURVE25519_PRIVATE
int curve25519_impl(uint8_t *output, const uint8_t *secret,
const uint8_t *basepoint);
#endif
#endif
#define CURVE25519_BASE64_PADDED_LEN 44
int curve25519_public_from_base64(curve25519_public_key_t *pkey,
@ -58,11 +64,5 @@ int curve25519_public_from_base64(curve25519_public_key_t *pkey,
int curve25519_public_to_base64(char *output,
const curve25519_public_key_t *pkey);
#ifdef CRYPTO_CURVE25519_PRIVATE
int curve25519_impl(uint8_t *output, const uint8_t *secret,
const uint8_t *basepoint);
#endif
#endif
#endif

46
src/common/crypto_format.c Normal file
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@ -0,0 +1,46 @@
/* Copyright (c) 2012-2013, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/* Formatting and parsing code for crypto-related data structures. */
#define CRYPTO_CURVE25519_PRIVATE
#include "orconfig.h"
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#include "crypto.h"
#include "crypto_curve25519.h"
#include "util.h"
#include "torlog.h"
int
curve25519_public_to_base64(char *output,
const curve25519_public_key_t *pkey)
{
char buf[128];
base64_encode(buf, sizeof(buf),
(const char*)pkey->public_key, CURVE25519_PUBKEY_LEN);
buf[CURVE25519_BASE64_PADDED_LEN] = '\0';
memcpy(output, buf, CURVE25519_BASE64_PADDED_LEN+1);
return 0;
}
int
curve25519_public_from_base64(curve25519_public_key_t *pkey,
const char *input)
{
size_t len = strlen(input);
if (len == CURVE25519_BASE64_PADDED_LEN - 1) {
/* not padded */
return digest256_from_base64((char*)pkey->public_key, input);
} else if (len == CURVE25519_BASE64_PADDED_LEN) {
char buf[128];
if (base64_decode(buf, sizeof(buf), input, len) != CURVE25519_PUBKEY_LEN)
return -1;
memcpy(pkey->public_key, buf, CURVE25519_PUBKEY_LEN);
return 0;
} else {
return -1;
}
}

1
src/common/include.am
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@ -52,6 +52,7 @@ src_common_libor_a_SOURCES = \
src_common_libor_crypto_a_SOURCES = \
src/common/aes.c \
src/common/crypto.c \
src/common/crypto_format.c \
src/common/torgzip.c \
src/common/tortls.c \
$(libcrypto_extra_source)