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ara-mdk / platform / external / ipsec-tools / a0315adb1214a45a323e1ddf7c09faaa8ba0cdf5 / . / src / racoon / crypto_openssl.c
blob: 811d0ef3cd08aa16865d6b68e9032e6968787ded [file] [log] [blame]
/* $NetBSD: crypto_openssl.c,v 1.11.6.6 2009/04/29 10:50:25 tteras Exp $ */
/* Id: crypto_openssl.c,v 1.47 2006/05/06 20:42:09 manubsd Exp */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE 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. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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.
*/
#include "config.h"
#include <sys/types.h>
#include <sys/param.h>
#include <stdlib.h>
#include <stdio.h>
#include <limits.h>
#include <string.h>
/* get openssl/ssleay version number */
#include <openssl/opensslv.h>
#if !defined(OPENSSL_VERSION_NUMBER) || (OPENSSL_VERSION_NUMBER < 0x0090602fL)
#error OpenSSL version 0.9.6 or later required.
#endif
#include <openssl/pem.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/x509_vfy.h>
#include <openssl/bn.h>
#include <openssl/dh.h>
#include <openssl/md5.h>
#include <openssl/sha.h>
#include <openssl/hmac.h>
#include <openssl/des.h>
#include <openssl/crypto.h>
#ifdef HAVE_OPENSSL_ENGINE_H
#include <openssl/engine.h>
#endif
#ifndef ANDROID_CHANGES
#include <openssl/blowfish.h>
#include <openssl/cast.h>
#else
#define EVP_bf_cbc() NULL
#define EVP_cast5_cbc() NULL
#endif
#include <openssl/err.h>
#ifdef HAVE_OPENSSL_RC5_H
#include <openssl/rc5.h>
#endif
#ifdef HAVE_OPENSSL_IDEA_H
#include <openssl/idea.h>
#endif
#if defined(HAVE_OPENSSL_AES_H)
#include <openssl/aes.h>
#elif defined(HAVE_OPENSSL_RIJNDAEL_H)
#include <openssl/rijndael.h>
#else
#include "crypto/rijndael/rijndael-api-fst.h"
#endif
#if defined(HAVE_OPENSSL_CAMELLIA_H)
#include <openssl/camellia.h>
#endif
#ifdef WITH_SHA2
#ifdef HAVE_OPENSSL_SHA2_H
#include <openssl/sha2.h>
#else
#include "crypto/sha2/sha2.h"
#endif
#endif
#include "plog.h"
/* 0.9.7 stuff? */
#if OPENSSL_VERSION_NUMBER < 0x0090700fL
typedef STACK_OF(GENERAL_NAME) GENERAL_NAMES;
#else
#define USE_NEW_DES_API
#endif
#define OpenSSL_BUG() do { plog(LLV_ERROR, LOCATION, NULL, "OpenSSL function failed\n"); } while(0)
#include "var.h"
#include "misc.h"
#include "vmbuf.h"
#include "plog.h"
#include "crypto_openssl.h"
#include "debug.h"
#include "gcmalloc.h"
/*
* I hate to cast every parameter to des_xx into void *, but it is
* necessary for SSLeay/OpenSSL portability. It sucks.
*/
static int cb_check_cert_local __P((int, X509_STORE_CTX *));
static int cb_check_cert_remote __P((int, X509_STORE_CTX *));
static X509 *mem2x509 __P((vchar_t *));
static caddr_t eay_hmac_init __P((vchar_t *, const EVP_MD *));
/* X509 Certificate */
/*
* convert the string of the subject name into DER
* e.g. str = "C=JP, ST=Kanagawa";
*/
vchar_t *
eay_str2asn1dn(str, len)
const char *str;
int len;
{
X509_NAME *name;
char *buf;
char *field, *value;
int i, j;
vchar_t *ret = NULL;
caddr_t p;
if (len == -1)
len = strlen(str);
buf = racoon_malloc(len + 1);
if (!buf) {
plog(LLV_WARNING, LOCATION, NULL,"failed to allocate buffer\n");
return NULL;
}
memcpy(buf, str, len);
name = X509_NAME_new();
field = &buf[0];
value = NULL;
for (i = 0; i < len; i++) {
if (!value && buf[i] == '=') {
buf[i] = '\0';
value = &buf[i + 1];
continue;
} else if (buf[i] == ',' || buf[i] == '/') {
buf[i] = '\0';
plog(LLV_DEBUG, LOCATION, NULL, "DN: %s=%s\n",
field, value);
if (!value) goto err;
if (!X509_NAME_add_entry_by_txt(name, field,
(value[0] == '*' && value[1] == 0) ?
V_ASN1_PRINTABLESTRING : MBSTRING_ASC,
(unsigned char *) value, -1, -1, 0)) {
plog(LLV_ERROR, LOCATION, NULL,
"Invalid DN field: %s=%s\n",
field, value);
plog(LLV_ERROR, LOCATION, NULL,
"%s\n", eay_strerror());
goto err;
}
for (j = i + 1; j < len; j++) {
if (buf[j] != ' ')
break;
}
field = &buf[j];
value = NULL;
continue;
}
}
buf[len] = '\0';
plog(LLV_DEBUG, LOCATION, NULL, "DN: %s=%s\n",
field, value);
if (!value) goto err;
if (!X509_NAME_add_entry_by_txt(name, field,
(value[0] == '*' && value[1] == 0) ?
V_ASN1_PRINTABLESTRING : MBSTRING_ASC,
(unsigned char *) value, -1, -1, 0)) {
plog(LLV_ERROR, LOCATION, NULL,
"Invalid DN field: %s=%s\n",
field, value);
plog(LLV_ERROR, LOCATION, NULL,
"%s\n", eay_strerror());
goto err;
}
i = i2d_X509_NAME(name, NULL);
if (!i)
goto err;
ret = vmalloc(i);
if (!ret)
goto err;
p = ret->v;
i = i2d_X509_NAME(name, (void *)&p);
if (!i)
goto err;
return ret;
err:
if (buf)
racoon_free(buf);
if (name)
X509_NAME_free(name);
if (ret)
vfree(ret);
return NULL;
}
/*
* convert the hex string of the subject name into DER
*/
vchar_t *
eay_hex2asn1dn(const char *hex, int len)
{
BIGNUM *bn = BN_new();
char *binbuf;
size_t binlen;
vchar_t *ret = NULL;
if (len == -1)
len = strlen(hex);
if (BN_hex2bn(&bn, hex) != len) {
plog(LLV_ERROR, LOCATION, NULL,
"conversion of Hex-encoded ASN1 string to binary failed: %s\n",
eay_strerror());
goto out;
}
binlen = BN_num_bytes(bn);
ret = vmalloc(binlen);
if (!ret) {
plog(LLV_WARNING, LOCATION, NULL,"failed to allocate buffer\n");
return NULL;
}
binbuf = ret->v;
BN_bn2bin(bn, (unsigned char *) binbuf);
out:
BN_free(bn);
return ret;
}
/*
* The following are derived from code in crypto/x509/x509_cmp.c
* in OpenSSL0.9.7c:
* X509_NAME_wildcmp() adds wildcard matching to the original
* X509_NAME_cmp(), nocase_cmp() and nocase_spacenorm_cmp() are as is.
*/
#include <ctype.h>
/* Case insensitive string comparision */
static int nocase_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
{
int i;
if (a->length != b->length)
return (a->length - b->length);
for (i=0; i<a->length; i++)
{
int ca, cb;
ca = tolower(a->data[i]);
cb = tolower(b->data[i]);
if (ca != cb)
return(ca-cb);
}
return 0;
}
/* Case insensitive string comparision with space normalization
* Space normalization - ignore leading, trailing spaces,
* multiple spaces between characters are replaced by single space
*/
static int nocase_spacenorm_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
{
unsigned char *pa = NULL, *pb = NULL;
int la, lb;
la = a->length;
lb = b->length;
pa = a->data;
pb = b->data;
/* skip leading spaces */
while (la > 0 && isspace(*pa))
{
la--;
pa++;
}
while (lb > 0 && isspace(*pb))
{
lb--;
pb++;
}
/* skip trailing spaces */
while (la > 0 && isspace(pa[la-1]))
la--;
while (lb > 0 && isspace(pb[lb-1]))
lb--;
/* compare strings with space normalization */
while (la > 0 && lb > 0)
{
int ca, cb;
/* compare character */
ca = tolower(*pa);
cb = tolower(*pb);
if (ca != cb)
return (ca - cb);
pa++; pb++;
la--; lb--;
if (la <= 0 || lb <= 0)
break;
/* is white space next character ? */
if (isspace(*pa) && isspace(*pb))
{
/* skip remaining white spaces */
while (la > 0 && isspace(*pa))
{
la--;
pa++;
}
while (lb > 0 && isspace(*pb))
{
lb--;
pb++;
}
}
}
if (la > 0 || lb > 0)
return la - lb;
return 0;
}
static int X509_NAME_wildcmp(const X509_NAME *a, const X509_NAME *b)
{
int i,j;
X509_NAME_ENTRY *na,*nb;
if (sk_X509_NAME_ENTRY_num(a->entries)
!= sk_X509_NAME_ENTRY_num(b->entries))
return sk_X509_NAME_ENTRY_num(a->entries)
-sk_X509_NAME_ENTRY_num(b->entries);
for (i=sk_X509_NAME_ENTRY_num(a->entries)-1; i>=0; i--)
{
na=sk_X509_NAME_ENTRY_value(a->entries,i);
nb=sk_X509_NAME_ENTRY_value(b->entries,i);
j=OBJ_cmp(na->object,nb->object);
if (j) return(j);
if ((na->value->length == 1 && na->value->data[0] == '*')
|| (nb->value->length == 1 && nb->value->data[0] == '*'))
continue;
j=na->value->type-nb->value->type;
if (j) return(j);
if (na->value->type == V_ASN1_PRINTABLESTRING)
j=nocase_spacenorm_cmp(na->value, nb->value);
else if (na->value->type == V_ASN1_IA5STRING
&& OBJ_obj2nid(na->object) == NID_pkcs9_emailAddress)
j=nocase_cmp(na->value, nb->value);
else
{
j=na->value->length-nb->value->length;
if (j) return(j);
j=memcmp(na->value->data,nb->value->data,
na->value->length);
}
if (j) return(j);
j=na->set-nb->set;
if (j) return(j);
}
return(0);
}
/*
* compare two subjectNames.
* OUT: 0: equal
* positive:
* -1: other error.
*/
int
eay_cmp_asn1dn(n1, n2)
vchar_t *n1, *n2;
{
X509_NAME *a = NULL, *b = NULL;
caddr_t p;
int i = -1;
p = n1->v;
if (!d2i_X509_NAME(&a, (void *)&p, n1->l))
goto end;
p = n2->v;
if (!d2i_X509_NAME(&b, (void *)&p, n2->l))
goto end;
i = X509_NAME_wildcmp(a, b);
end:
if (a)
X509_NAME_free(a);
if (b)
X509_NAME_free(b);
return i;
}
#ifdef ANDROID_CHANGES
static BIO *BIO_from_android(char *path)
{
void *data;
if (sscanf(path, pname, &data) == 1) {
return BIO_new_mem_buf(data, -1);
}
return NULL;
}
#endif
/*
* this functions is derived from apps/verify.c in OpenSSL0.9.5
*/
int
eay_check_x509cert(cert, CApath, CAfile, local)
vchar_t *cert;
char *CApath;
char *CAfile;
int local;
{
X509_STORE *cert_ctx = NULL;
X509_LOOKUP *lookup = NULL;
X509 *x509 = NULL;
X509_STORE_CTX *csc;
int error = -1;
cert_ctx = X509_STORE_new();
if (cert_ctx == NULL)
goto end;
if (local)
X509_STORE_set_verify_cb_func(cert_ctx, cb_check_cert_local);
else
X509_STORE_set_verify_cb_func(cert_ctx, cb_check_cert_remote);
#ifdef ANDROID_CHANGES
if (pname) {
BIO *bio = BIO_from_android(CAfile);
STACK_OF(X509_INFO) *stack;
X509_INFO *info;
int i;
if (!bio) {
goto end;
}
stack = PEM_X509_INFO_read_bio(bio, NULL, NULL, NULL);
BIO_free(bio);
if (!stack) {
goto end;
}
for (i = 0; i < sk_X509_INFO_num(stack); ++i) {
info = sk_X509_INFO_value(stack, i);
if (info->x509) {
X509_STORE_add_cert(cert_ctx, info->x509);
}
if (info->crl) {
X509_STORE_add_crl(cert_ctx, info->crl);
}
}
sk_X509_INFO_pop_free(stack, X509_INFO_free);
} else {
#endif
lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file());
if (lookup == NULL)
goto end;
X509_LOOKUP_load_file(lookup, CAfile,
(CAfile == NULL) ? X509_FILETYPE_DEFAULT : X509_FILETYPE_PEM);
lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir());
if (lookup == NULL)
goto end;
error = X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM);
if(!error) {
error = -1;
goto end;
}
error = -1; /* initialized */
#ifdef ANDROID_CHANGES
}
#endif
/* read the certificate to be verified */
x509 = mem2x509(cert);
if (x509 == NULL)
goto end;
csc = X509_STORE_CTX_new();
if (csc == NULL)
goto end;
X509_STORE_CTX_init(csc, cert_ctx, x509, NULL);
#if OPENSSL_VERSION_NUMBER >= 0x00907000L
X509_STORE_CTX_set_flags (csc, X509_V_FLAG_CRL_CHECK);
X509_STORE_CTX_set_flags (csc, X509_V_FLAG_CRL_CHECK_ALL);
#endif
error = X509_verify_cert(csc);
X509_STORE_CTX_free(csc);
/*
* if x509_verify_cert() is successful then the value of error is
* set non-zero.
*/
error = error ? 0 : -1;
end:
if (error)
plog(LLV_WARNING, LOCATION, NULL,"%s\n", eay_strerror());
if (cert_ctx != NULL)
X509_STORE_free(cert_ctx);
if (x509 != NULL)
X509_free(x509);
return(error);
}
/*
* callback function for verifing certificate.
* this function is derived from cb() in openssl/apps/s_server.c
*/
static int
cb_check_cert_local(ok, ctx)
int ok;
X509_STORE_CTX *ctx;
{
char buf[256];
int log_tag;
if (!ok) {
X509_NAME_oneline(
X509_get_subject_name(ctx->current_cert),
buf,
256);
/*
* since we are just checking the certificates, it is
* ok if they are self signed. But we should still warn
* the user.
*/
switch (ctx->error) {
case X509_V_ERR_CERT_HAS_EXPIRED:
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
case X509_V_ERR_INVALID_CA:
case X509_V_ERR_PATH_LENGTH_EXCEEDED:
case X509_V_ERR_INVALID_PURPOSE:
case X509_V_ERR_UNABLE_TO_GET_CRL:
ok = 1;
log_tag = LLV_WARNING;
break;
default:
log_tag = LLV_ERROR;
}
plog(log_tag, LOCATION, NULL,
"%s(%d) at depth:%d SubjectName:%s\n",
X509_verify_cert_error_string(ctx->error),
ctx->error,
ctx->error_depth,
buf);
}
ERR_clear_error();
return ok;
}
/*
* callback function for verifing remote certificates.
* this function is derived from cb() in openssl/apps/s_server.c
*/
static int
cb_check_cert_remote(ok, ctx)
int ok;
X509_STORE_CTX *ctx;
{
char buf[256];
int log_tag;
if (!ok) {
X509_NAME_oneline(
X509_get_subject_name(ctx->current_cert),
buf,
256);
switch (ctx->error) {
case X509_V_ERR_UNABLE_TO_GET_CRL:
ok = 1;
log_tag = LLV_WARNING;
break;
default:
log_tag = LLV_ERROR;
}
plog(log_tag, LOCATION, NULL,
"%s(%d) at depth:%d SubjectName:%s\n",
X509_verify_cert_error_string(ctx->error),
ctx->error,
ctx->error_depth,
buf);
}
ERR_clear_error();
return ok;
}
/*
* get a subjectAltName from X509 certificate.
*/
vchar_t *
eay_get_x509asn1subjectname(cert)
vchar_t *cert;
{
X509 *x509 = NULL;
u_char *bp;
vchar_t *name = NULL;
int len;
bp = (unsigned char *) cert->v;
x509 = mem2x509(cert);
if (x509 == NULL)
goto error;
/* get the length of the name */
len = i2d_X509_NAME(x509->cert_info->subject, NULL);
name = vmalloc(len);
if (!name)
goto error;
/* get the name */
bp = (unsigned char *) name->v;
len = i2d_X509_NAME(x509->cert_info->subject, &bp);
X509_free(x509);
return name;
error:
plog(LLV_ERROR, LOCATION, NULL, "%s\n", eay_strerror());
if (name != NULL)
vfree(name);
if (x509 != NULL)
X509_free(x509);
return NULL;
}
/*
* get the subjectAltName from X509 certificate.
* the name must be terminated by '\0'.
*/
int
eay_get_x509subjectaltname(cert, altname, type, pos)
vchar_t *cert;
char **altname;
int *type;
int pos;
{
X509 *x509 = NULL;
GENERAL_NAMES *gens = NULL;
GENERAL_NAME *gen;
int len;
int error = -1;
*altname = NULL;
*type = GENT_OTHERNAME;
x509 = mem2x509(cert);
if (x509 == NULL)
goto end;
gens = X509_get_ext_d2i(x509, NID_subject_alt_name, NULL, NULL);
if (gens == NULL)
goto end;
/* there is no data at "pos" */
if (pos > sk_GENERAL_NAME_num(gens))
goto end;
gen = sk_GENERAL_NAME_value(gens, pos - 1);
/* read DNSName / Email */
if (gen->type == GEN_DNS ||
gen->type == GEN_EMAIL ||
gen->type == GEN_URI )
{
/* make sure if the data is terminated by '\0'. */
if (gen->d.ia5->data[gen->d.ia5->length] != '\0')
{
plog(LLV_ERROR, LOCATION, NULL,
"data is not terminated by NUL.");
racoon_hexdump(gen->d.ia5->data, gen->d.ia5->length + 1);
goto end;
}
len = gen->d.ia5->length + 1;
*altname = racoon_malloc(len);
if (!*altname)
goto end;
strlcpy(*altname, (char *) gen->d.ia5->data, len);
*type = gen->type;
error = 0;
}
/* read IP address */
else if (gen->type == GEN_IPADD)
{
unsigned char p[5], *ip;
ip = p;
/* only support IPv4 */
if (gen->d.ip->length != 4)
goto end;
/* convert Octet String to String
* XXX ???????
*/
/*i2d_ASN1_OCTET_STRING(gen->d.ip,&ip);*/
ip = gen->d.ip->data;
/* XXX Magic, enough for an IPv4 address
*/
*altname = racoon_malloc(20);
if (!*altname)
goto end;
sprintf(*altname, "%u.%u.%u.%u", ip[0], ip[1], ip[2], ip[3]);
*type = gen->type;
error = 0;
}
/* XXX other possible types ?
* For now, error will be -1 if unsupported type
*/
end:
if (error) {
if (*altname) {
racoon_free(*altname);
*altname = NULL;
}
plog(LLV_ERROR, LOCATION, NULL, "%s\n", eay_strerror());
}
if (x509)
X509_free(x509);
if (gens)
/* free the whole stack. */
sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
return error;
}
/*
* decode a X509 certificate and make a readable text terminated '\n'.
* return the buffer allocated, so must free it later.
*/
char *
eay_get_x509text(cert)
vchar_t *cert;
{
X509 *x509 = NULL;
BIO *bio = NULL;
char *text = NULL;
u_char *bp = NULL;
int len = 0;
int error = -1;
x509 = mem2x509(cert);
if (x509 == NULL)
goto end;
bio = BIO_new(BIO_s_mem());
if (bio == NULL)
goto end;
error = X509_print(bio, x509);
if (error != 1) {
error = -1;
goto end;
}
len = BIO_get_mem_data(bio, &bp);
text = racoon_malloc(len + 1);
if (text == NULL)
goto end;
memcpy(text, bp, len);
text[len] = '\0';
error = 0;
end:
if (error) {
if (text) {
racoon_free(text);
text = NULL;
}
plog(LLV_ERROR, LOCATION, NULL, "%s\n", eay_strerror());
}
if (bio)
BIO_free(bio);
if (x509)
X509_free(x509);
return text;
}
/* get X509 structure from buffer. */
static X509 *
mem2x509(cert)
vchar_t *cert;
{
X509 *x509;
#ifndef EAYDEBUG
{
u_char *bp;
bp = (unsigned char *) cert->v;
x509 = d2i_X509(NULL, (void *)&bp, cert->l);
}
#else
{
BIO *bio;
int len;
bio = BIO_new(BIO_s_mem());
if (bio == NULL)
return NULL;
len = BIO_write(bio, cert->v, cert->l);
if (len == -1)
return NULL;
x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
BIO_free(bio);
}
#endif
return x509;
}
/*
* get a X509 certificate from local file.
* a certificate must be PEM format.
* Input:
* path to a certificate.
* Output:
* NULL if error occured
* other is the cert.
*/
vchar_t *
eay_get_x509cert(path)
char *path;
{
FILE *fp;
X509 *x509;
vchar_t *cert;
u_char *bp;
int len;
int error;
#ifdef ANDROID_CHANGES
if (pname) {
BIO *bio = BIO_from_android(path);
if (!bio) {
return NULL;
}
x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
BIO_free(bio);
} else {
#endif
/* Read private key */
fp = fopen(path, "r");
if (fp == NULL)
return NULL;
x509 = PEM_read_X509(fp, NULL, NULL, NULL);
fclose (fp);
#ifdef ANDROID_CHANGES
}
#endif
if (x509 == NULL)
return NULL;
len = i2d_X509(x509, NULL);
cert = vmalloc(len);
if (cert == NULL) {
X509_free(x509);
return NULL;
}
bp = (unsigned char *) cert->v;
error = i2d_X509(x509, &bp);
X509_free(x509);
if (error == 0) {
vfree(cert);
return NULL;
}
return cert;
}
/*
* check a X509 signature
* XXX: to be get hash type from my cert ?
* to be handled EVP_dss().
* OUT: return -1 when error.
* 0
*/
int
eay_check_x509sign(source, sig, cert)
vchar_t *source;
vchar_t *sig;
vchar_t *cert;
{
X509 *x509;
u_char *bp;
EVP_PKEY *evp;
int res;
bp = (unsigned char *) cert->v;
x509 = d2i_X509(NULL, (void *)&bp, cert->l);
if (x509 == NULL) {
plog(LLV_ERROR, LOCATION, NULL, "d2i_X509(): %s\n", eay_strerror());
return -1;
}
evp = X509_get_pubkey(x509);
if (! evp) {
plog(LLV_ERROR, LOCATION, NULL, "X509_get_pubkey(): %s\n", eay_strerror());
X509_free(x509);
return -1;
}
res = eay_rsa_verify(source, sig, evp->pkey.rsa);
EVP_PKEY_free(evp);
X509_free(x509);
return res;
}
/*
* check RSA signature
* OUT: return -1 when error.
* 0 on success
*/
int
eay_check_rsasign(source, sig, rsa)
vchar_t *source;
vchar_t *sig;
RSA *rsa;
{
return eay_rsa_verify(source, sig, rsa);
}
/*
* get PKCS#1 Private Key of PEM format from local file.
*/
vchar_t *
eay_get_pkcs1privkey(path)
char *path;
{
FILE *fp;
EVP_PKEY *evp = NULL;
vchar_t *pkey = NULL;
u_char *bp;
int pkeylen;
int error = -1;
#ifdef ANDROID_CHANGES
if (pname) {
BIO *bio = BIO_from_android(path);
if (!bio) {
return NULL;
}
evp = PEM_read_bio_PrivateKey(bio, NULL, NULL, NULL);
BIO_free(bio);
} else {
#endif
/* Read private key */
fp = fopen(path, "r");
if (fp == NULL)
return NULL;
evp = PEM_read_PrivateKey(fp, NULL, NULL, NULL);
fclose (fp);
#ifdef ANDROID_CHANGES
}
#endif
if (evp == NULL)
return NULL;
pkeylen = i2d_PrivateKey(evp, NULL);
if (pkeylen == 0)
goto end;
pkey = vmalloc(pkeylen);
if (pkey == NULL)
goto end;
bp = (unsigned char *) pkey->v;
pkeylen = i2d_PrivateKey(evp, &bp);
if (pkeylen == 0)
goto end;
error = 0;
end:
if (evp != NULL)
EVP_PKEY_free(evp);
if (error != 0 && pkey != NULL) {
vfree(pkey);
pkey = NULL;
}
return pkey;
}
/*
* get PKCS#1 Public Key of PEM format from local file.
*/
vchar_t *
eay_get_pkcs1pubkey(path)
char *path;
{
FILE *fp;
EVP_PKEY *evp = NULL;
vchar_t *pkey = NULL;
X509 *x509 = NULL;
u_char *bp;
int pkeylen;
int error = -1;
/* Read private key */
fp = fopen(path, "r");
if (fp == NULL)
return NULL;
x509 = PEM_read_X509(fp, NULL, NULL, NULL);
fclose (fp);
if (x509 == NULL)
return NULL;
/* Get public key - eay */
evp = X509_get_pubkey(x509);
if (evp == NULL)
return NULL;
pkeylen = i2d_PublicKey(evp, NULL);
if (pkeylen == 0)
goto end;
pkey = vmalloc(pkeylen);
if (pkey == NULL)
goto end;
bp = (unsigned char *) pkey->v;
pkeylen = i2d_PublicKey(evp, &bp);
if (pkeylen == 0)
goto end;
error = 0;
end:
if (evp != NULL)
EVP_PKEY_free(evp);
if (error != 0 && pkey != NULL) {
vfree(pkey);
pkey = NULL;
}
return pkey;
}
vchar_t *
eay_get_x509sign(src, privkey)
vchar_t *src, *privkey;
{
EVP_PKEY *evp;
u_char *bp = (unsigned char *) privkey->v;
vchar_t *sig = NULL;
int len;
int pad = RSA_PKCS1_PADDING;
/* XXX to be handled EVP_PKEY_DSA */
evp = d2i_PrivateKey(EVP_PKEY_RSA, NULL, (void *)&bp, privkey->l);
if (evp == NULL)
return NULL;
sig = eay_rsa_sign(src, evp->pkey.rsa);
EVP_PKEY_free(evp);
return sig;
}
vchar_t *
eay_get_rsasign(src, rsa)
vchar_t *src;
RSA *rsa;
{
return eay_rsa_sign(src, rsa);
}
vchar_t *
eay_rsa_sign(vchar_t *src, RSA *rsa)
{
int len;
vchar_t *sig = NULL;
int pad = RSA_PKCS1_PADDING;
len = RSA_size(rsa);
sig = vmalloc(len);
if (sig == NULL)
return NULL;
len = RSA_private_encrypt(src->l, (unsigned char *) src->v,
(unsigned char *) sig->v, rsa, pad);
if (len == 0 || len != sig->l) {
vfree(sig);
sig = NULL;
}
return sig;
}
int
eay_rsa_verify(src, sig, rsa)
vchar_t *src, *sig;
RSA *rsa;
{
vchar_t *xbuf = NULL;
int pad = RSA_PKCS1_PADDING;
int len = 0;
int error;
len = RSA_size(rsa);
xbuf = vmalloc(len);
if (xbuf == NULL) {
plog(LLV_ERROR, LOCATION, NULL, "%s\n", eay_strerror());
return -1;
}
len = RSA_public_decrypt(sig->l, (unsigned char *) sig->v,
(unsigned char *) xbuf->v, rsa, pad);
if (len == 0 || len != src->l) {
plog(LLV_ERROR, LOCATION, NULL, "%s\n", eay_strerror());
vfree(xbuf);
return -1;
}
error = memcmp(src->v, xbuf->v, src->l);
vfree(xbuf);
if (error != 0)
return -1;
return 0;
}
/*
* get error string
* MUST load ERR_load_crypto_strings() first.
*/
char *
eay_strerror()
{
static char ebuf[512];
int len = 0, n;
unsigned long l;
char buf[200];
const char *file, *data;
int line, flags;
unsigned long es;
es = CRYPTO_thread_id();
while ((l = ERR_get_error_line_data(&file, &line, &data, &flags)) != 0){
n = snprintf(ebuf + len, sizeof(ebuf) - len,
"%lu:%s:%s:%d:%s ",
es, ERR_error_string(l, buf), file, line,
(flags & ERR_TXT_STRING) ? data : "");
if (n < 0 || n >= sizeof(ebuf) - len)
break;
len += n;
if (sizeof(ebuf) < len)
break;
}
return ebuf;
}
vchar_t *
evp_crypt(vchar_t *data, vchar_t *key, vchar_t *iv, const EVP_CIPHER *e, int enc)
{
vchar_t *res;
EVP_CIPHER_CTX ctx;
if (!e)
return NULL;
if (data->l % EVP_CIPHER_block_size(e))
return NULL;
if ((res = vmalloc(data->l)) == NULL)
return NULL;
EVP_CIPHER_CTX_init(&ctx);
switch(EVP_CIPHER_nid(e)){
case NID_bf_cbc:
case NID_bf_ecb:
case NID_bf_cfb64:
case NID_bf_ofb64:
case NID_cast5_cbc:
case NID_cast5_ecb:
case NID_cast5_cfb64:
case NID_cast5_ofb64:
/* XXX: can we do that also for algos with a fixed key size ?
*/
/* init context without key/iv
*/
if (!EVP_CipherInit(&ctx, e, NULL, NULL, enc))
{
OpenSSL_BUG();
vfree(res);
return NULL;
}
/* update key size
*/
if (!EVP_CIPHER_CTX_set_key_length(&ctx, key->l))
{
OpenSSL_BUG();
vfree(res);
return NULL;
}
/* finalize context init with desired key size
*/
if (!EVP_CipherInit(&ctx, NULL, (u_char *) key->v,
(u_char *) iv->v, enc))
{
OpenSSL_BUG();
vfree(res);
return NULL;
}
break;
default:
if (!EVP_CipherInit(&ctx, e, (u_char *) key->v,
(u_char *) iv->v, enc)) {
OpenSSL_BUG();
vfree(res);
return NULL;
}
}
/* disable openssl padding */
EVP_CIPHER_CTX_set_padding(&ctx, 0);
if (!EVP_Cipher(&ctx, (u_char *) res->v, (u_char *) data->v, data->l)) {
OpenSSL_BUG();
vfree(res);
return NULL;
}
EVP_CIPHER_CTX_cleanup(&ctx);
return res;
}
int
evp_weakkey(vchar_t *key, const EVP_CIPHER *e)
{
return 0;
}
int
evp_keylen(int len, const EVP_CIPHER *e)
{
if (!e)
return -1;
/* EVP functions return lengths in bytes, ipsec-tools
* uses lengths in bits, therefore conversion is required. --AK
*/
if (len != 0 && len != (EVP_CIPHER_key_length(e) << 3))
return -1;
return EVP_CIPHER_key_length(e) << 3;
}
/*
* DES-CBC
*/
vchar_t *
eay_des_encrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
return evp_crypt(data, key, iv, EVP_des_cbc(), 1);
}
vchar_t *
eay_des_decrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
return evp_crypt(data, key, iv, EVP_des_cbc(), 0);
}
int
eay_des_weakkey(key)
vchar_t *key;
{
#ifdef USE_NEW_DES_API
return DES_is_weak_key((void *)key->v);
#else
return des_is_weak_key((void *)key->v);
#endif
}
int
eay_des_keylen(len)
int len;
{
return evp_keylen(len, EVP_des_cbc());
}
#ifdef HAVE_OPENSSL_IDEA_H
/*
* IDEA-CBC
*/
vchar_t *
eay_idea_encrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
vchar_t *res;
IDEA_KEY_SCHEDULE ks;
idea_set_encrypt_key((unsigned char *)key->v, &ks);
/* allocate buffer for result */
if ((res = vmalloc(data->l)) == NULL)
return NULL;
/* decryption data */
idea_cbc_encrypt((unsigned char *)data->v, (unsigned char *)res->v, data->l,
&ks, (unsigned char *)iv->v, IDEA_ENCRYPT);
return res;
}
vchar_t *
eay_idea_decrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
vchar_t *res;
IDEA_KEY_SCHEDULE ks, dks;
idea_set_encrypt_key((unsigned char *)key->v, &ks);
idea_set_decrypt_key(&ks, &dks);
/* allocate buffer for result */
if ((res = vmalloc(data->l)) == NULL)
return NULL;
/* decryption data */
idea_cbc_encrypt((unsigned char *)data->v, (unsigned char *)res->v, data->l,
&dks, (unsigned char *)iv->v, IDEA_DECRYPT);
return res;
}
int
eay_idea_weakkey(key)
vchar_t *key;
{
return 0; /* XXX */
}
int
eay_idea_keylen(len)
int len;
{
if (len != 0 && len != 128)
return -1;
return 128;
}
#endif
/*
* BLOWFISH-CBC
*/
vchar_t *
eay_bf_encrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
return evp_crypt(data, key, iv, EVP_bf_cbc(), 1);
}
vchar_t *
eay_bf_decrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
return evp_crypt(data, key, iv, EVP_bf_cbc(), 0);
}
int
eay_bf_weakkey(key)
vchar_t *key;
{
return 0; /* XXX to be done. refer to RFC 2451 */
}
int
eay_bf_keylen(len)
int len;
{
if (len == 0)
return 448;
if (len < 40 || len > 448)
return -1;
return len;
}
#ifdef HAVE_OPENSSL_RC5_H
/*
* RC5-CBC
*/
vchar_t *
eay_rc5_encrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
vchar_t *res;
RC5_32_KEY ks;
/* in RFC 2451, there is information about the number of round. */
RC5_32_set_key(&ks, key->l, (unsigned char *)key->v, 16);
/* allocate buffer for result */
if ((res = vmalloc(data->l)) == NULL)
return NULL;
/* decryption data */
RC5_32_cbc_encrypt((unsigned char *)data->v, (unsigned char *)res->v, data->l,
&ks, (unsigned char *)iv->v, RC5_ENCRYPT);
return res;
}
vchar_t *
eay_rc5_decrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
vchar_t *res;
RC5_32_KEY ks;
/* in RFC 2451, there is information about the number of round. */
RC5_32_set_key(&ks, key->l, (unsigned char *)key->v, 16);
/* allocate buffer for result */
if ((res = vmalloc(data->l)) == NULL)
return NULL;
/* decryption data */
RC5_32_cbc_encrypt((unsigned char *)data->v, (unsigned char *)res->v, data->l,
&ks, (unsigned char *)iv->v, RC5_DECRYPT);
return res;
}
int
eay_rc5_weakkey(key)
vchar_t *key;
{
return 0; /* No known weak keys when used with 16 rounds. */
}
int
eay_rc5_keylen(len)
int len;
{
if (len == 0)
return 128;
if (len < 40 || len > 2040)
return -1;
return len;
}
#endif
/*
* 3DES-CBC
*/
vchar_t *
eay_3des_encrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
return evp_crypt(data, key, iv, EVP_des_ede3_cbc(), 1);
}
vchar_t *
eay_3des_decrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
return evp_crypt(data, key, iv, EVP_des_ede3_cbc(), 0);
}
int
eay_3des_weakkey(key)
vchar_t *key;
{
#ifdef USE_NEW_DES_API
return (DES_is_weak_key((void *)key->v) ||
DES_is_weak_key((void *)(key->v + 8)) ||
DES_is_weak_key((void *)(key->v + 16)));
#else
if (key->l < 24)
return 0;
return (des_is_weak_key((void *)key->v) ||
des_is_weak_key((void *)(key->v + 8)) ||
des_is_weak_key((void *)(key->v + 16)));
#endif
}
int
eay_3des_keylen(len)
int len;
{
if (len != 0 && len != 192)
return -1;
return 192;
}
/*
* CAST-CBC
*/
vchar_t *
eay_cast_encrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
return evp_crypt(data, key, iv, EVP_cast5_cbc(), 1);
}
vchar_t *
eay_cast_decrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
return evp_crypt(data, key, iv, EVP_cast5_cbc(), 0);
}
int
eay_cast_weakkey(key)
vchar_t *key;
{
return 0; /* No known weak keys. */
}
int
eay_cast_keylen(len)
int len;
{
if (len == 0)
return 128;
if (len < 40 || len > 128)
return -1;
return len;
}
/*
* AES(RIJNDAEL)-CBC
*/
#ifndef HAVE_OPENSSL_AES_H
vchar_t *
eay_aes_encrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
vchar_t *res;
keyInstance k;
cipherInstance c;
memset(&k, 0, sizeof(k));
if (rijndael_makeKey(&k, DIR_ENCRYPT, key->l << 3, key->v) < 0)
return NULL;
/* allocate buffer for result */
if ((res = vmalloc(data->l)) == NULL)
return NULL;
/* encryption data */
memset(&c, 0, sizeof(c));
if (rijndael_cipherInit(&c, MODE_CBC, iv->v) < 0){
vfree(res);
return NULL;
}
if (rijndael_blockEncrypt(&c, &k, data->v, data->l << 3, res->v) < 0){
vfree(res);
return NULL;
}
return res;
}
vchar_t *
eay_aes_decrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
vchar_t *res;
keyInstance k;
cipherInstance c;
memset(&k, 0, sizeof(k));
if (rijndael_makeKey(&k, DIR_DECRYPT, key->l << 3, key->v) < 0)
return NULL;
/* allocate buffer for result */
if ((res = vmalloc(data->l)) == NULL)
return NULL;
/* decryption data */
memset(&c, 0, sizeof(c));
if (rijndael_cipherInit(&c, MODE_CBC, iv->v) < 0){
vfree(res);
return NULL;
}
if (rijndael_blockDecrypt(&c, &k, data->v, data->l << 3, res->v) < 0){
vfree(res);
return NULL;
}
return res;
}
#else
static inline const EVP_CIPHER *
aes_evp_by_keylen(int keylen)
{
switch(keylen) {
case 16:
case 128:
return EVP_aes_128_cbc();
case 24:
case 192:
return EVP_aes_192_cbc();
case 32:
case 256:
return EVP_aes_256_cbc();
default:
return NULL;
}
}
vchar_t *
eay_aes_encrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
return evp_crypt(data, key, iv, aes_evp_by_keylen(key->l), 1);
}
vchar_t *
eay_aes_decrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
return evp_crypt(data, key, iv, aes_evp_by_keylen(key->l), 0);
}
#endif
int
eay_aes_weakkey(key)
vchar_t *key;
{
return 0;
}
int
eay_aes_keylen(len)
int len;
{
if (len == 0)
return 128;
if (len != 128 && len != 192 && len != 256)
return -1;
return len;
}
#if defined(HAVE_OPENSSL_CAMELLIA_H)
/*
* CAMELLIA-CBC
*/
static inline const EVP_CIPHER *
camellia_evp_by_keylen(int keylen)
{
switch(keylen) {
case 16:
case 128:
return EVP_camellia_128_cbc();
case 24:
case 192:
return EVP_camellia_192_cbc();
case 32:
case 256:
return EVP_camellia_256_cbc();
default:
return NULL;
}
}
vchar_t *
eay_camellia_encrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
return evp_crypt(data, key, iv, camellia_evp_by_keylen(key->l), 1);
}
vchar_t *
eay_camellia_decrypt(data, key, iv)
vchar_t *data, *key, *iv;
{
return evp_crypt(data, key, iv, camellia_evp_by_keylen(key->l), 0);
}
int
eay_camellia_weakkey(key)
vchar_t *key;
{
return 0;
}
int
eay_camellia_keylen(len)
int len;
{
if (len == 0)
return 128;
if (len != 128 && len != 192 && len != 256)
return -1;
return len;
}
#endif
/* for ipsec part */
int
eay_null_hashlen()
{
return 0;
}
int
eay_kpdk_hashlen()
{
return 0;
}
int
eay_twofish_keylen(len)
int len;
{
if (len < 0 || len > 256)
return -1;
return len;
}
int
eay_null_keylen(len)
int len;
{
return 0;
}
/*
* HMAC functions
*/
static caddr_t
eay_hmac_init(key, md)
vchar_t *key;
const EVP_MD *md;
{
HMAC_CTX *c = racoon_malloc(sizeof(*c));
HMAC_Init(c, key->v, key->l, md);
return (caddr_t)c;
}
#ifdef WITH_SHA2
/*
* HMAC SHA2-512
*/
vchar_t *
eay_hmacsha2_512_one(key, data)
vchar_t *key, *data;
{
vchar_t *res;
caddr_t ctx;
ctx = eay_hmacsha2_512_init(key);
eay_hmacsha2_512_update(ctx, data);
res = eay_hmacsha2_512_final(ctx);
return(res);
}
caddr_t
eay_hmacsha2_512_init(key)
vchar_t *key;
{
return eay_hmac_init(key, EVP_sha2_512());
}
void
eay_hmacsha2_512_update(c, data)
caddr_t c;
vchar_t *data;
{
HMAC_Update((HMAC_CTX *)c, (unsigned char *) data->v, data->l);
}
vchar_t *
eay_hmacsha2_512_final(c)
caddr_t c;
{
vchar_t *res;
unsigned int l;
if ((res = vmalloc(SHA512_DIGEST_LENGTH)) == 0)
return NULL;
HMAC_Final((HMAC_CTX *)c, (unsigned char *) res->v, &l);
res->l = l;
HMAC_cleanup((HMAC_CTX *)c);
(void)racoon_free(c);
if (SHA512_DIGEST_LENGTH != res->l) {
plog(LLV_ERROR, LOCATION, NULL,
"hmac sha2_512 length mismatch %zd.\n", res->l);
vfree(res);
return NULL;
}
return(res);
}
/*
* HMAC SHA2-384
*/
vchar_t *
eay_hmacsha2_384_one(key, data)
vchar_t *key, *data;
{
vchar_t *res;
caddr_t ctx;
ctx = eay_hmacsha2_384_init(key);
eay_hmacsha2_384_update(ctx, data);
res = eay_hmacsha2_384_final(ctx);
return(res);
}
caddr_t
eay_hmacsha2_384_init(key)
vchar_t *key;
{
return eay_hmac_init(key, EVP_sha2_384());
}
void
eay_hmacsha2_384_update(c, data)
caddr_t c;
vchar_t *data;
{
HMAC_Update((HMAC_CTX *)c, (unsigned char *) data->v, data->l);
}
vchar_t *
eay_hmacsha2_384_final(c)
caddr_t c;
{
vchar_t *res;
unsigned int l;
if ((res = vmalloc(SHA384_DIGEST_LENGTH)) == 0)
return NULL;
HMAC_Final((HMAC_CTX *)c, (unsigned char *) res->v, &l);
res->l = l;
HMAC_cleanup((HMAC_CTX *)c);
(void)racoon_free(c);
if (SHA384_DIGEST_LENGTH != res->l) {
plog(LLV_ERROR, LOCATION, NULL,
"hmac sha2_384 length mismatch %zd.\n", res->l);
vfree(res);
return NULL;
}
return(res);
}
/*
* HMAC SHA2-256
*/
vchar_t *
eay_hmacsha2_256_one(key, data)
vchar_t *key, *data;
{
vchar_t *res;
caddr_t ctx;
ctx = eay_hmacsha2_256_init(key);
eay_hmacsha2_256_update(ctx, data);
res = eay_hmacsha2_256_final(ctx);
return(res);
}
caddr_t
eay_hmacsha2_256_init(key)
vchar_t *key;
{
return eay_hmac_init(key, EVP_sha2_256());
}
void
eay_hmacsha2_256_update(c, data)
caddr_t c;
vchar_t *data;
{
HMAC_Update((HMAC_CTX *)c, (unsigned char *) data->v, data->l);
}
vchar_t *
eay_hmacsha2_256_final(c)
caddr_t c;
{
vchar_t *res;
unsigned int l;
if ((res = vmalloc(SHA256_DIGEST_LENGTH)) == 0)
return NULL;
HMAC_Final((HMAC_CTX *)c, (unsigned char *) res->v, &l);
res->l = l;
HMAC_cleanup((HMAC_CTX *)c);
(void)racoon_free(c);
if (SHA256_DIGEST_LENGTH != res->l) {
plog(LLV_ERROR, LOCATION, NULL,
"hmac sha2_256 length mismatch %zd.\n", res->l);
vfree(res);
return NULL;
}
return(res);
}
#endif /* WITH_SHA2 */
/*
* HMAC SHA1
*/
vchar_t *
eay_hmacsha1_one(key, data)
vchar_t *key, *data;
{
vchar_t *res;
caddr_t ctx;
ctx = eay_hmacsha1_init(key);
eay_hmacsha1_update(ctx, data);
res = eay_hmacsha1_final(ctx);
return(res);
}
caddr_t
eay_hmacsha1_init(key)
vchar_t *key;
{
return eay_hmac_init(key, EVP_sha1());
}
void
eay_hmacsha1_update(c, data)
caddr_t c;
vchar_t *data;
{
HMAC_Update((HMAC_CTX *)c, (unsigned char *) data->v, data->l);
}
vchar_t *
eay_hmacsha1_final(c)
caddr_t c;
{
vchar_t *res;
unsigned int l;
if ((res = vmalloc(SHA_DIGEST_LENGTH)) == 0)
return NULL;
HMAC_Final((HMAC_CTX *)c, (unsigned char *) res->v, &l);
res->l = l;
HMAC_cleanup((HMAC_CTX *)c);
(void)racoon_free(c);
if (SHA_DIGEST_LENGTH != res->l) {
plog(LLV_ERROR, LOCATION, NULL,
"hmac sha1 length mismatch %zd.\n", res->l);
vfree(res);
return NULL;
}
return(res);
}
/*
* HMAC MD5
*/
vchar_t *
eay_hmacmd5_one(key, data)
vchar_t *key, *data;
{
vchar_t *res;
caddr_t ctx;
ctx = eay_hmacmd5_init(key);
eay_hmacmd5_update(ctx, data);
res = eay_hmacmd5_final(ctx);
return(res);
}
caddr_t
eay_hmacmd5_init(key)
vchar_t *key;
{
return eay_hmac_init(key, EVP_md5());
}
void
eay_hmacmd5_update(c, data)
caddr_t c;
vchar_t *data;
{
HMAC_Update((HMAC_CTX *)c, (unsigned char *) data->v, data->l);
}
vchar_t *
eay_hmacmd5_final(c)
caddr_t c;
{
vchar_t *res;
unsigned int l;
if ((res = vmalloc(MD5_DIGEST_LENGTH)) == 0)
return NULL;
HMAC_Final((HMAC_CTX *)c, (unsigned char *) res->v, &l);
res->l = l;
HMAC_cleanup((HMAC_CTX *)c);
(void)racoon_free(c);
if (MD5_DIGEST_LENGTH != res->l) {
plog(LLV_ERROR, LOCATION, NULL,
"hmac md5 length mismatch %zd.\n", res->l);
vfree(res);
return NULL;
}
return(res);
}
#ifdef WITH_SHA2
/*
* SHA2-512 functions
*/
caddr_t
eay_sha2_512_init()
{
SHA512_CTX *c = racoon_malloc(sizeof(*c));
SHA512_Init(c);
return((caddr_t)c);
}
void
eay_sha2_512_update(c, data)
caddr_t c;
vchar_t *data;
{
SHA512_Update((SHA512_CTX *)c, (unsigned char *) data->v, data->l);
return;
}
vchar_t *
eay_sha2_512_final(c)
caddr_t c;
{
vchar_t *res;
if ((res = vmalloc(SHA512_DIGEST_LENGTH)) == 0)
return(0);
SHA512_Final((unsigned char *) res->v, (SHA512_CTX *)c);
(void)racoon_free(c);
return(res);
}
vchar_t *
eay_sha2_512_one(data)
vchar_t *data;
{
caddr_t ctx;
vchar_t *res;
ctx = eay_sha2_512_init();
eay_sha2_512_update(ctx, data);
res = eay_sha2_512_final(ctx);
return(res);
}
int
eay_sha2_512_hashlen()
{
return SHA512_DIGEST_LENGTH << 3;
}
#endif
#ifdef WITH_SHA2
/*
* SHA2-384 functions
*/
caddr_t
eay_sha2_384_init()
{
SHA384_CTX *c = racoon_malloc(sizeof(*c));
SHA384_Init(c);
return((caddr_t)c);
}
void
eay_sha2_384_update(c, data)
caddr_t c;
vchar_t *data;
{
SHA384_Update((SHA384_CTX *)c, (unsigned char *) data->v, data->l);
return;
}
vchar_t *
eay_sha2_384_final(c)
caddr_t c;
{
vchar_t *res;
if ((res = vmalloc(SHA384_DIGEST_LENGTH)) == 0)
return(0);
SHA384_Final((unsigned char *) res->v, (SHA384_CTX *)c);
(void)racoon_free(c);
return(res);
}
vchar_t *
eay_sha2_384_one(data)
vchar_t *data;
{
caddr_t ctx;
vchar_t *res;
ctx = eay_sha2_384_init();
eay_sha2_384_update(ctx, data);
res = eay_sha2_384_final(ctx);
return(res);
}
int
eay_sha2_384_hashlen()
{
return SHA384_DIGEST_LENGTH << 3;
}
#endif
#ifdef WITH_SHA2
/*
* SHA2-256 functions
*/
caddr_t
eay_sha2_256_init()
{
SHA256_CTX *c = racoon_malloc(sizeof(*c));
SHA256_Init(c);
return((caddr_t)c);
}
void
eay_sha2_256_update(c, data)
caddr_t c;
vchar_t *data;
{
SHA256_Update((SHA256_CTX *)c, (unsigned char *) data->v, data->l);
return;
}
vchar_t *
eay_sha2_256_final(c)
caddr_t c;
{
vchar_t *res;
if ((res = vmalloc(SHA256_DIGEST_LENGTH)) == 0)
return(0);
SHA256_Final((unsigned char *) res->v, (SHA256_CTX *)c);
(void)racoon_free(c);
return(res);
}
vchar_t *
eay_sha2_256_one(data)
vchar_t *data;
{
caddr_t ctx;
vchar_t *res;
ctx = eay_sha2_256_init();
eay_sha2_256_update(ctx, data);
res = eay_sha2_256_final(ctx);
return(res);
}
int
eay_sha2_256_hashlen()
{
return SHA256_DIGEST_LENGTH << 3;
}
#endif
/*
* SHA functions
*/
caddr_t
eay_sha1_init()
{
SHA_CTX *c = racoon_malloc(sizeof(*c));
SHA1_Init(c);
return((caddr_t)c);
}
void
eay_sha1_update(c, data)
caddr_t c;
vchar_t *data;
{
SHA1_Update((SHA_CTX *)c, data->v, data->l);
return;
}
vchar_t *
eay_sha1_final(c)
caddr_t c;
{
vchar_t *res;
if ((res = vmalloc(SHA_DIGEST_LENGTH)) == 0)
return(0);
SHA1_Final((unsigned char *) res->v, (SHA_CTX *)c);
(void)racoon_free(c);
return(res);
}
vchar_t *
eay_sha1_one(data)
vchar_t *data;
{
caddr_t ctx;
vchar_t *res;
ctx = eay_sha1_init();
eay_sha1_update(ctx, data);
res = eay_sha1_final(ctx);
return(res);
}
int
eay_sha1_hashlen()
{
return SHA_DIGEST_LENGTH << 3;
}
/*
* MD5 functions
*/
caddr_t
eay_md5_init()
{
MD5_CTX *c = racoon_malloc(sizeof(*c));
MD5_Init(c);
return((caddr_t)c);
}
void
eay_md5_update(c, data)
caddr_t c;
vchar_t *data;
{
MD5_Update((MD5_CTX *)c, data->v, data->l);
return;
}
vchar_t *
eay_md5_final(c)
caddr_t c;
{
vchar_t *res;
if ((res = vmalloc(MD5_DIGEST_LENGTH)) == 0)
return(0);
MD5_Final((unsigned char *) res->v, (MD5_CTX *)c);
(void)racoon_free(c);
return(res);
}
vchar_t *
eay_md5_one(data)
vchar_t *data;
{
caddr_t ctx;
vchar_t *res;
ctx = eay_md5_init();
eay_md5_update(ctx, data);
res = eay_md5_final(ctx);
return(res);
}
int
eay_md5_hashlen()
{
return MD5_DIGEST_LENGTH << 3;
}
/*
* eay_set_random
* size: number of bytes.
*/
vchar_t *
eay_set_random(size)
u_int32_t size;
{
BIGNUM *r = NULL;
vchar_t *res = 0;
if ((r = BN_new()) == NULL)
goto end;
BN_rand(r, size * 8, 0, 0);
eay_bn2v(&res, r);
end:
if (r)
BN_free(r);
return(res);
}
/* DH */
int
eay_dh_generate(prime, g, publen, pub, priv)
vchar_t *prime, **pub, **priv;
u_int publen;
u_int32_t g;
{
BIGNUM *p = NULL;
DH *dh = NULL;
int error = -1;
/* initialize */
/* pre-process to generate number */
if (eay_v2bn(&p, prime) < 0)
goto end;
if ((dh = DH_new()) == NULL)
goto end;
dh->p = p;
p = NULL; /* p is now part of dh structure */
dh->g = NULL;
if ((dh->g = BN_new()) == NULL)
goto end;
if (!BN_set_word(dh->g, g))
goto end;
if (publen != 0)
dh->length = publen;
/* generate public and private number */
if (!DH_generate_key(dh))
goto end;
/* copy results to buffers */
if (eay_bn2v(pub, dh->pub_key) < 0)
goto end;
if (eay_bn2v(priv, dh->priv_key) < 0) {
vfree(*pub);
goto end;
}
error = 0;
end:
if (dh != NULL)
DH_free(dh);
if (p != 0)
BN_free(p);
return(error);
}
int
eay_dh_compute(prime, g, pub, priv, pub2, key)
vchar_t *prime, *pub, *priv, *pub2, **key;
u_int32_t g;
{
BIGNUM *dh_pub = NULL;
DH *dh = NULL;
int l;
unsigned char *v = NULL;
int error = -1;
/* make public number to compute */
if (eay_v2bn(&dh_pub, pub2) < 0)
goto end;
/* make DH structure */
if ((dh = DH_new()) == NULL)
goto end;
if (eay_v2bn(&dh->p, prime) < 0)
goto end;
if (eay_v2bn(&dh->pub_key, pub) < 0)
goto end;
if (eay_v2bn(&dh->priv_key, priv) < 0)
goto end;
dh->length = pub2->l * 8;
dh->g = NULL;
if ((dh->g = BN_new()) == NULL)
goto end;
if (!BN_set_word(dh->g, g))
goto end;
if ((v = racoon_calloc(prime->l, sizeof(u_char))) == NULL)
goto end;
if ((l = DH_compute_key(v, dh_pub, dh)) == -1)
goto end;
memcpy((*key)->v + (prime->l - l), v, l);
error = 0;
end:
if (dh_pub != NULL)
BN_free(dh_pub);
if (dh != NULL)
DH_free(dh);
if (v != NULL)
racoon_free(v);
return(error);
}
/*
* convert vchar_t <-> BIGNUM.
*
* vchar_t: unit is u_char, network endian, most significant byte first.
* BIGNUM: unit is BN_ULONG, each of BN_ULONG is in host endian,
* least significant BN_ULONG must come first.
*
* hex value of "0x3ffe050104" is represented as follows:
* vchar_t: 3f fe 05 01 04
* BIGNUM (BN_ULONG = u_int8_t): 04 01 05 fe 3f
* BIGNUM (BN_ULONG = u_int16_t): 0x0104 0xfe05 0x003f
* BIGNUM (BN_ULONG = u_int32_t_t): 0xfe050104 0x0000003f
*/
int
eay_v2bn(bn, var)
BIGNUM **bn;
vchar_t *var;
{
if ((*bn = BN_bin2bn((unsigned char *) var->v, var->l, NULL)) == NULL)
return -1;
return 0;
}
int
eay_bn2v(var, bn)
vchar_t **var;
BIGNUM *bn;
{
*var = vmalloc(bn->top * BN_BYTES);
if (*var == NULL)
return(-1);
(*var)->l = BN_bn2bin(bn, (unsigned char *) (*var)->v);
return 0;
}
void
eay_init()
{
OpenSSL_add_all_algorithms();
ERR_load_crypto_strings();
#ifdef HAVE_OPENSSL_ENGINE_H
ENGINE_load_builtin_engines();
ENGINE_register_all_complete();
#endif
}
vchar_t *
base64_decode(char *in, long inlen)
{
BIO *bio=NULL, *b64=NULL;
vchar_t *res = NULL;
char *outb;
long outlen;
outb = malloc(inlen * 2);
if (outb == NULL)
goto out;
bio = BIO_new_mem_buf(in, inlen);
b64 = BIO_new(BIO_f_base64());
BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
bio = BIO_push(b64, bio);
outlen = BIO_read(bio, outb, inlen * 2);
if (outlen <= 0) {
plog(LLV_ERROR, LOCATION, NULL, "%s\n", eay_strerror());
goto out;
}
res = vmalloc(outlen);
if (!res)
goto out;
memcpy(res->v, outb, outlen);
out:
if (outb)
free(outb);
if (bio)
BIO_free_all(bio);
return res;
}
vchar_t *
base64_encode(char *in, long inlen)
{
BIO *bio=NULL, *b64=NULL;
char *ptr;
long plen = -1;
vchar_t *res = NULL;
bio = BIO_new(BIO_s_mem());
b64 = BIO_new(BIO_f_base64());
BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
bio = BIO_push(b64, bio);
BIO_write(bio, in, inlen);
BIO_flush(bio);
plen = BIO_get_mem_data(bio, &ptr);
res = vmalloc(plen+1);
if (!res)
goto out;
memcpy (res->v, ptr, plen);
res->v[plen] = '\0';
out:
if (bio)
BIO_free_all(bio);
return res;
}
static RSA *
binbuf_pubkey2rsa(vchar_t *binbuf)
{
BIGNUM *exp, *mod;
RSA *rsa_pub = NULL;
if (binbuf->v[0] > binbuf->l - 1) {
plog(LLV_ERROR, LOCATION, NULL, "Plain RSA pubkey format error: decoded string doesn't make sense.\n");
goto out;
}
exp = BN_bin2bn((unsigned char *) (binbuf->v + 1), binbuf->v[0], NULL);
mod = BN_bin2bn((unsigned char *) (binbuf->v + binbuf->v[0] + 1),
binbuf->l - binbuf->v[0] - 1, NULL);
rsa_pub = RSA_new();
if (!exp || !mod || !rsa_pub) {
plog(LLV_ERROR, LOCATION, NULL, "Plain RSA pubkey parsing error: %s\n", eay_strerror());
if (exp)
BN_free(exp);
if (mod)
BN_free(exp);
if (rsa_pub)
RSA_free(rsa_pub);
rsa_pub = NULL;
goto out;
}
rsa_pub->n = mod;
rsa_pub->e = exp;
out:
return rsa_pub;
}
RSA *
base64_pubkey2rsa(char *in)
{
BIGNUM *exp, *mod;
RSA *rsa_pub = NULL;
vchar_t *binbuf;
if (strncmp(in, "0s", 2) != 0) {
plog(LLV_ERROR, LOCATION, NULL, "Plain RSA pubkey format error: doesn't start with '0s'\n");
return NULL;
}
binbuf = base64_decode(in + 2, strlen(in + 2));
if (!binbuf) {
plog(LLV_ERROR, LOCATION, NULL, "Plain RSA pubkey format error: Base64 decoding failed.\n");
return NULL;
}
if (binbuf->v[0] > binbuf->l - 1) {
plog(LLV_ERROR, LOCATION, NULL, "Plain RSA pubkey format error: decoded string doesn't make sense.\n");
goto out;
}
rsa_pub = binbuf_pubkey2rsa(binbuf);
out:
if (binbuf)
vfree(binbuf);
return rsa_pub;
}
RSA *
bignum_pubkey2rsa(BIGNUM *in)
{
RSA *rsa_pub = NULL;
vchar_t *binbuf;
binbuf = vmalloc(BN_num_bytes(in));
if (!binbuf) {
plog(LLV_ERROR, LOCATION, NULL, "Plain RSA pubkey conversion: memory allocation failed..\n");
return NULL;
}
BN_bn2bin(in, (unsigned char *) binbuf->v);
rsa_pub = binbuf_pubkey2rsa(binbuf);
out:
if (binbuf)
vfree(binbuf);
return rsa_pub;
}
u_int32_t
eay_random()
{
u_int32_t result;
vchar_t *vrand;
vrand = eay_set_random(sizeof(result));
memcpy(&result, vrand->v, sizeof(result));
vfree(vrand);
return result;
}
const char *
eay_version()
{
return SSLeay_version(SSLEAY_VERSION);
}