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/*
* Copyright 1999-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/pkcs12.h>
#include <openssl/bn.h>
#include <openssl/trace.h>
#include <openssl/kdf.h>
#include <openssl/core_names.h>
#include "internal/provider.h"
int PKCS12_key_gen_asc_ex(const char *pass, int passlen, unsigned char *salt,
int saltlen, int id, int iter, int n,
unsigned char *out, const EVP_MD *md_type,
OSSL_LIB_CTX *ctx, const char *propq)
{
int ret;
unsigned char *unipass;
int uniplen;
if (pass == NULL) {
unipass = NULL;
uniplen = 0;
} else if (!OPENSSL_asc2uni(pass, passlen, &unipass, &uniplen)) {
ERR_raise(ERR_LIB_PKCS12, ERR_R_MALLOC_FAILURE);
return 0;
}
ret = PKCS12_key_gen_uni_ex(unipass, uniplen, salt, saltlen, id, iter,
n, out, md_type, ctx, propq);
OPENSSL_clear_free(unipass, uniplen);
return ret > 0;
}
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)
{
return PKCS12_key_gen_asc_ex(pass, passlen, salt, saltlen, id, iter, n,
out, md_type, NULL, NULL);
}
int PKCS12_key_gen_utf8_ex(const char *pass, int passlen, unsigned char *salt,
int saltlen, int id, int iter, int n,
unsigned char *out, const EVP_MD *md_type,
OSSL_LIB_CTX *ctx, const char *propq)
{
int ret;
unsigned char *unipass;
int uniplen;
if (pass == NULL) {
unipass = NULL;
uniplen = 0;
} else if (!OPENSSL_utf82uni(pass, passlen, &unipass, &uniplen)) {
ERR_raise(ERR_LIB_PKCS12, ERR_R_MALLOC_FAILURE);
return 0;
}
ret = PKCS12_key_gen_uni_ex(unipass, uniplen, salt, saltlen, id, iter,
n, out, md_type, ctx, propq);
OPENSSL_clear_free(unipass, uniplen);
return ret > 0;
}
int PKCS12_key_gen_utf8(const char *pass, int passlen, unsigned char *salt,
int saltlen, int id, int iter, int n,
unsigned char *out, const EVP_MD *md_type)
{
return PKCS12_key_gen_utf8_ex(pass, passlen, salt, saltlen, id, iter, n,
out, md_type, NULL, NULL);
}
int PKCS12_key_gen_uni_ex(unsigned char *pass, int passlen, unsigned char *salt,
int saltlen, int id, int iter, int n,
unsigned char *out, const EVP_MD *md_type,
OSSL_LIB_CTX *libctx, const char *propq)
{
int res = 0;
EVP_KDF *kdf;
EVP_KDF_CTX *ctx;
OSSL_PARAM params[6], *p = params;
if (n <= 0)
return 0;
kdf = EVP_KDF_fetch(libctx, "PKCS12KDF", propq);
if (kdf == NULL)
return 0;
ctx = EVP_KDF_CTX_new(kdf);
EVP_KDF_free(kdf);
if (ctx == NULL)
return 0;
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST,
(char *)EVP_MD_name(md_type), 0);
*p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_PASSWORD,
pass, passlen);
*p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SALT,
salt, saltlen);
*p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_PKCS12_ID, &id);
*p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_ITER, &iter);
*p = OSSL_PARAM_construct_end();
OSSL_TRACE_BEGIN(PKCS12_KEYGEN) {
BIO_printf(trc_out, "PKCS12_key_gen_uni_ex(): ID %d, ITER %d\n", id, iter);
BIO_printf(trc_out, "Password (length %d):\n", passlen);
BIO_hex_string(trc_out, 0, passlen, pass, passlen);
BIO_printf(trc_out, "\n");
BIO_printf(trc_out, "Salt (length %d):\n", saltlen);
BIO_hex_string(trc_out, 0, saltlen, salt, saltlen);
BIO_printf(trc_out, "\n");
} OSSL_TRACE_END(PKCS12_KEYGEN);
if (EVP_KDF_derive(ctx, out, (size_t)n, params)) {
res = 1;
OSSL_TRACE_BEGIN(PKCS12_KEYGEN) {
BIO_printf(trc_out, "Output KEY (length %d)\n", n);
BIO_hex_string(trc_out, 0, n, out, n);
BIO_printf(trc_out, "\n");
} OSSL_TRACE_END(PKCS12_KEYGEN);
}
EVP_KDF_CTX_free(ctx);
return res;
}
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)
{
return PKCS12_key_gen_uni_ex(pass, passlen, salt, saltlen, id, iter, n, out, md_type, NULL, NULL);
}
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