/* p12_key.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project 1999.
*/
/* ====================================================================
#include <stdio.h>
#include "cryptlib.h"
-#include "pkcs12.h"
-
+#include <openssl/pkcs12.h>
+#include <openssl/bn.h>
/* Uncomment out this line to get debugging info about key generation */
/*#define DEBUG_KEYGEN*/
#ifdef DEBUG_KEYGEN
-#include <bio.h>
+#include <openssl/bio.h>
extern BIO *bio_err;
void h__dump (unsigned char *p, int len);
#endif
#define min(a,b) ((a) < (b) ? (a) : (b))
#endif
-int PKCS12_key_gen_asc (const char *pass, int passlen, unsigned char *salt,
+int PKCS12_key_gen_asc(const char *pass, int passlen, unsigned char *salt,
int saltlen, int id, int iter, int n, unsigned char *out,
const EVP_MD *md_type)
{
int ret;
unsigned char *unipass;
int uniplen;
- if (!asc2uni (pass, &unipass, &uniplen)) {
+
+ if(!pass) {
+ unipass = NULL;
+ uniplen = 0;
+ } else if (!OPENSSL_asc2uni(pass, passlen, &unipass, &uniplen)) {
PKCS12err(PKCS12_F_PKCS12_KEY_GEN_ASC,ERR_R_MALLOC_FAILURE);
return 0;
}
- ret = PKCS12_key_gen_uni (unipass, uniplen, salt, saltlen,
+ ret = PKCS12_key_gen_uni(unipass, uniplen, salt, saltlen,
id, iter, n, out, md_type);
- memset(unipass, 0, uniplen); /* Clear password from memory */
- Free(unipass);
+ if (ret <= 0)
+ return 0;
+ if(unipass) {
+ OPENSSL_cleanse(unipass, uniplen); /* Clear password from memory */
+ OPENSSL_free(unipass);
+ }
return ret;
}
-int PKCS12_key_gen_uni (unsigned char *pass, int passlen, unsigned char *salt,
+int PKCS12_key_gen_uni(unsigned char *pass, int passlen, unsigned char *salt,
int saltlen, int id, int iter, int n, unsigned char *out,
const EVP_MD *md_type)
{
unsigned char *B, *D, *I, *p, *Ai;
- int Slen, Plen, Ilen;
+ int Slen, Plen, Ilen, Ijlen;
int i, j, u, v;
BIGNUM *Ij, *Bpl1; /* These hold Ij and B + 1 */
EVP_MD_CTX ctx;
#ifdef DEBUG_KEYGEN
unsigned char *tmpout = out;
int tmpn = n;
- BIO_printf (bio_err, "KEYGEN DEBUG\n");
- BIO_printf (bio_err, "ID %d, ITER %d\n", id, iter);
- BIO_printf (bio_err, "Password (length %d):\n", passlen);
- h__dump (pass, passlen);
- BIO_printf (bio_err, "Salt (length %d):\n", saltlen);
- h__dump (salt, saltlen);
- BIO_printf (bio_err, "ID %d, ITER %d\n\n", id, iter);
+#endif
+
+#if 0
+ if (!pass) {
+ PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI,ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+#endif
+
+ EVP_MD_CTX_init(&ctx);
+#ifdef DEBUG_KEYGEN
+ fprintf(stderr, "KEYGEN DEBUG\n");
+ fprintf(stderr, "ID %d, ITER %d\n", id, iter);
+ fprintf(stderr, "Password (length %d):\n", passlen);
+ h__dump(pass, passlen);
+ fprintf(stderr, "Salt (length %d):\n", saltlen);
+ h__dump(salt, saltlen);
#endif
v = EVP_MD_block_size (md_type);
u = EVP_MD_size (md_type);
- D = Malloc (v);
- Ai = Malloc (u);
- B = Malloc (v + 1);
+ if (u < 0)
+ return 0;
+ D = OPENSSL_malloc (v);
+ Ai = OPENSSL_malloc (u);
+ B = OPENSSL_malloc (v + 1);
Slen = v * ((saltlen+v-1)/v);
- Plen = v * ((passlen+v-1)/v);
+ if(passlen) Plen = v * ((passlen+v-1)/v);
+ else Plen = 0;
Ilen = Slen + Plen;
- I = Malloc (Ilen);
+ I = OPENSSL_malloc (Ilen);
Ij = BN_new();
Bpl1 = BN_new();
if (!D || !Ai || !B || !I || !Ij || !Bpl1) {
for (i = 0; i < Slen; i++) *p++ = salt[i % saltlen];
for (i = 0; i < Plen; i++) *p++ = pass[i % passlen];
for (;;) {
- EVP_DigestInit (&ctx, md_type);
- EVP_DigestUpdate (&ctx, D, v);
- EVP_DigestUpdate (&ctx, I, Ilen);
- EVP_DigestFinal (&ctx, Ai, NULL);
+ EVP_DigestInit_ex(&ctx, md_type, NULL);
+ EVP_DigestUpdate(&ctx, D, v);
+ EVP_DigestUpdate(&ctx, I, Ilen);
+ EVP_DigestFinal_ex(&ctx, Ai, NULL);
for (j = 1; j < iter; j++) {
- EVP_DigestInit (&ctx, md_type);
- EVP_DigestUpdate (&ctx, Ai, u);
- EVP_DigestFinal (&ctx, Ai, NULL);
+ EVP_DigestInit_ex(&ctx, md_type, NULL);
+ EVP_DigestUpdate(&ctx, Ai, u);
+ EVP_DigestFinal_ex(&ctx, Ai, NULL);
}
memcpy (out, Ai, min (n, u));
if (u >= n) {
- Free (Ai);
- Free (B);
- Free (D);
- Free (I);
+ OPENSSL_free (Ai);
+ OPENSSL_free (B);
+ OPENSSL_free (D);
+ OPENSSL_free (I);
BN_free (Ij);
BN_free (Bpl1);
+ EVP_MD_CTX_cleanup(&ctx);
#ifdef DEBUG_KEYGEN
- BIO_printf (bio_err, "Output KEY (length %d)\n", tmpn);
- h__dump (tmpout, tmpn);
+ fprintf(stderr, "Output KEY (length %d)\n", tmpn);
+ h__dump(tmpout, tmpn);
#endif
return 1;
}
BN_bin2bn (I + j, v, Ij);
BN_add (Ij, Ij, Bpl1);
BN_bn2bin (Ij, B);
+ Ijlen = BN_num_bytes (Ij);
/* If more than 2^(v*8) - 1 cut off MSB */
- if (BN_num_bytes (Ij) > v) {
+ if (Ijlen > v) {
BN_bn2bin (Ij, B);
memcpy (I + j, B + 1, v);
+#ifndef PKCS12_BROKEN_KEYGEN
+ /* If less than v bytes pad with zeroes */
+ } else if (Ijlen < v) {
+ memset(I + j, 0, v - Ijlen);
+ BN_bn2bin(Ij, I + j + v - Ijlen);
+#endif
} else BN_bn2bin (Ij, I + j);
}
}
- return 0; /* This can't happen */
}
#ifdef DEBUG_KEYGEN
void h__dump (unsigned char *p, int len)
{
- for (; len --; p++) BIO_printf (bio_err, "%02X", *p);
- BIO_printf (bio_err, "\n");
+ for (; len --; p++) fprintf(stderr, "%02X", *p);
+ fprintf(stderr, "\n");
}
#endif
projects / openssl.git / blobdiff