/* 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 <openssl/pkcs12.h>
-
+#include <openssl/bn.h>
/* Uncomment out this line to get debugging info about key generation */
/*#define DEBUG_KEYGEN*/
int ret;
unsigned char *unipass;
int uniplen;
+
if(!pass) {
unipass = NULL;
uniplen = 0;
- } else if (!asc2uni(pass, &unipass, &uniplen)) {
+ } 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,
id, iter, n, out, md_type);
+ if (ret <= 0)
+ return 0;
if(unipass) {
- memset(unipass, 0, uniplen); /* Clear password from memory */
- Free(unipass);
+ OPENSSL_cleanse(unipass, uniplen); /* Clear password from memory */
+ OPENSSL_free(unipass);
}
return ret;
}
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;
+ int ret = 0;
BIGNUM *Ij, *Bpl1; /* These hold Ij and B + 1 */
EVP_MD_CTX ctx;
#ifdef DEBUG_KEYGEN
}
#endif
+ EVP_MD_CTX_init(&ctx);
#ifdef DEBUG_KEYGEN
fprintf(stderr, "KEYGEN DEBUG\n");
fprintf(stderr, "ID %d, ITER %d\n", id, iter);
#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);
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) {
- PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI,ERR_R_MALLOC_FAILURE);
- return 0;
- }
+ if (!D || !Ai || !B || !I || !Ij || !Bpl1)
+ goto err;
for (i = 0; i < v; i++) D[i] = id;
p = I;
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);
+ if (!EVP_DigestInit_ex(&ctx, md_type, NULL)
+ || !EVP_DigestUpdate(&ctx, D, v)
+ || !EVP_DigestUpdate(&ctx, I, Ilen)
+ || !EVP_DigestFinal_ex(&ctx, Ai, NULL))
+ goto err;
for (j = 1; j < iter; j++) {
- EVP_DigestInit (&ctx, md_type);
- EVP_DigestUpdate (&ctx, Ai, u);
- EVP_DigestFinal (&ctx, Ai, NULL);
+ if (!EVP_DigestInit_ex(&ctx, md_type, NULL)
+ || !EVP_DigestUpdate(&ctx, Ai, u)
+ || !EVP_DigestFinal_ex(&ctx, Ai, NULL))
+ goto err;
}
memcpy (out, Ai, min (n, u));
if (u >= n) {
- Free (Ai);
- Free (B);
- Free (D);
- Free (I);
- BN_free (Ij);
- BN_free (Bpl1);
#ifdef DEBUG_KEYGEN
fprintf(stderr, "Output KEY (length %d)\n", tmpn);
h__dump(tmpout, tmpn);
#endif
- return 1;
+ ret = 1;
+ goto end;
}
n -= u;
out += u;
for (j = 0; j < v; j++) B[j] = Ai[j % u];
/* Work out B + 1 first then can use B as tmp space */
- BN_bin2bn (B, v, Bpl1);
- BN_add_word (Bpl1, 1);
+ if (!BN_bin2bn (B, v, Bpl1))
+ goto err;
+ if (!BN_add_word (Bpl1, 1))
+ goto err;
for (j = 0; j < Ilen ; j+=v) {
- BN_bin2bn (I + j, v, Ij);
- BN_add (Ij, Ij, Bpl1);
- BN_bn2bin (Ij, B);
+ if (!BN_bin2bn(I + j, v, Ij))
+ goto err;
+ if (!BN_add(Ij, Ij, Bpl1))
+ goto err;
+ if (!BN_bn2bin(Ij, B))
+ goto err;
+ Ijlen = BN_num_bytes (Ij);
/* If more than 2^(v*8) - 1 cut off MSB */
- if (BN_num_bytes (Ij) > v) {
- BN_bn2bin (Ij, B);
+ if (Ijlen > v) {
+ if (!BN_bn2bin (Ij, B))
+ goto err;
memcpy (I + j, B + 1, v);
- } else BN_bn2bin (Ij, I + j);
+#ifndef PKCS12_BROKEN_KEYGEN
+ /* If less than v bytes pad with zeroes */
+ } else if (Ijlen < v) {
+ memset(I + j, 0, v - Ijlen);
+ if (!BN_bn2bin(Ij, I + j + v - Ijlen))
+ goto err;
+#endif
+ } else if (!BN_bn2bin (Ij, I + j))
+ goto err;
}
}
+ err:
+ PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI,ERR_R_MALLOC_FAILURE);
+
+ end:
+ OPENSSL_free (Ai);
+ OPENSSL_free (B);
+ OPENSSL_free (D);
+ OPENSSL_free (I);
+ BN_free (Ij);
+ BN_free (Bpl1);
+ EVP_MD_CTX_cleanup(&ctx);
+ return ret;
}
#ifdef DEBUG_KEYGEN
void h__dump (unsigned char *p, int len)
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