360 lines
11 KiB
C
360 lines
11 KiB
C
/*
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* Copyright 1999-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "apps.h"
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#include "progs.h"
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#include <openssl/pem.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/pkcs12.h>
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typedef enum OPTION_choice {
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OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT,
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OPT_TOPK8, OPT_NOITER, OPT_NOCRYPT,
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#ifndef OPENSSL_NO_SCRYPT
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OPT_SCRYPT, OPT_SCRYPT_N, OPT_SCRYPT_R, OPT_SCRYPT_P,
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#endif
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OPT_V2, OPT_V1, OPT_V2PRF, OPT_ITER, OPT_PASSIN, OPT_PASSOUT,
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OPT_TRADITIONAL,
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OPT_R_ENUM
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} OPTION_CHOICE;
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const OPTIONS pkcs8_options[] = {
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{"help", OPT_HELP, '-', "Display this summary"},
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{"inform", OPT_INFORM, 'F', "Input format (DER or PEM)"},
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{"outform", OPT_OUTFORM, 'F', "Output format (DER or PEM)"},
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{"in", OPT_IN, '<', "Input file"},
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{"out", OPT_OUT, '>', "Output file"},
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{"topk8", OPT_TOPK8, '-', "Output PKCS8 file"},
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{"noiter", OPT_NOITER, '-', "Use 1 as iteration count"},
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{"nocrypt", OPT_NOCRYPT, '-', "Use or expect unencrypted private key"},
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OPT_R_OPTIONS,
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{"v2", OPT_V2, 's', "Use PKCS#5 v2.0 and cipher"},
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{"v1", OPT_V1, 's', "Use PKCS#5 v1.5 and cipher"},
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{"v2prf", OPT_V2PRF, 's', "Set the PRF algorithm to use with PKCS#5 v2.0"},
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{"iter", OPT_ITER, 'p', "Specify the iteration count"},
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{"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
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{"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
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{"traditional", OPT_TRADITIONAL, '-', "use traditional format private key"},
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#ifndef OPENSSL_NO_ENGINE
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{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
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#endif
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#ifndef OPENSSL_NO_SCRYPT
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{"scrypt", OPT_SCRYPT, '-', "Use scrypt algorithm"},
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{"scrypt_N", OPT_SCRYPT_N, 's', "Set scrypt N parameter"},
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{"scrypt_r", OPT_SCRYPT_R, 's', "Set scrypt r parameter"},
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{"scrypt_p", OPT_SCRYPT_P, 's', "Set scrypt p parameter"},
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#endif
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{NULL}
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};
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int pkcs8_main(int argc, char **argv)
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{
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BIO *in = NULL, *out = NULL;
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ENGINE *e = NULL;
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EVP_PKEY *pkey = NULL;
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PKCS8_PRIV_KEY_INFO *p8inf = NULL;
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X509_SIG *p8 = NULL;
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const EVP_CIPHER *cipher = NULL;
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char *infile = NULL, *outfile = NULL;
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char *passinarg = NULL, *passoutarg = NULL, *prog;
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#ifndef OPENSSL_NO_UI_CONSOLE
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char pass[APP_PASS_LEN];
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#endif
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char *passin = NULL, *passout = NULL, *p8pass = NULL;
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OPTION_CHOICE o;
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int nocrypt = 0, ret = 1, iter = PKCS12_DEFAULT_ITER;
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int informat = FORMAT_PEM, outformat = FORMAT_PEM, topk8 = 0, pbe_nid = -1;
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int private = 0, traditional = 0;
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#ifndef OPENSSL_NO_SCRYPT
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long scrypt_N = 0, scrypt_r = 0, scrypt_p = 0;
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#endif
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prog = opt_init(argc, argv, pkcs8_options);
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while ((o = opt_next()) != OPT_EOF) {
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switch (o) {
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case OPT_EOF:
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case OPT_ERR:
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opthelp:
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BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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goto end;
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case OPT_HELP:
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opt_help(pkcs8_options);
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ret = 0;
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goto end;
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case OPT_INFORM:
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if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
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goto opthelp;
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break;
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case OPT_IN:
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infile = opt_arg();
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break;
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case OPT_OUTFORM:
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if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
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goto opthelp;
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break;
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case OPT_OUT:
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outfile = opt_arg();
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break;
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case OPT_TOPK8:
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topk8 = 1;
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break;
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case OPT_NOITER:
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iter = 1;
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break;
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case OPT_NOCRYPT:
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nocrypt = 1;
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break;
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case OPT_R_CASES:
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if (!opt_rand(o))
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goto end;
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break;
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case OPT_TRADITIONAL:
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traditional = 1;
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break;
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case OPT_V2:
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if (!opt_cipher(opt_arg(), &cipher))
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goto opthelp;
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break;
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case OPT_V1:
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pbe_nid = OBJ_txt2nid(opt_arg());
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if (pbe_nid == NID_undef) {
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BIO_printf(bio_err,
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"%s: Unknown PBE algorithm %s\n", prog, opt_arg());
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goto opthelp;
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}
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break;
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case OPT_V2PRF:
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pbe_nid = OBJ_txt2nid(opt_arg());
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if (!EVP_PBE_find(EVP_PBE_TYPE_PRF, pbe_nid, NULL, NULL, 0)) {
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BIO_printf(bio_err,
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"%s: Unknown PRF algorithm %s\n", prog, opt_arg());
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goto opthelp;
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}
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if (cipher == NULL)
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cipher = EVP_aes_256_cbc();
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break;
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case OPT_ITER:
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if (!opt_int(opt_arg(), &iter))
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goto opthelp;
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break;
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case OPT_PASSIN:
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passinarg = opt_arg();
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break;
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case OPT_PASSOUT:
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passoutarg = opt_arg();
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break;
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case OPT_ENGINE:
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e = setup_engine(opt_arg(), 0);
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break;
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#ifndef OPENSSL_NO_SCRYPT
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case OPT_SCRYPT:
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scrypt_N = 16384;
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scrypt_r = 8;
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scrypt_p = 1;
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if (cipher == NULL)
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cipher = EVP_aes_256_cbc();
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break;
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case OPT_SCRYPT_N:
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if (!opt_long(opt_arg(), &scrypt_N) || scrypt_N <= 0)
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goto opthelp;
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break;
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case OPT_SCRYPT_R:
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if (!opt_long(opt_arg(), &scrypt_r) || scrypt_r <= 0)
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goto opthelp;
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break;
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case OPT_SCRYPT_P:
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if (!opt_long(opt_arg(), &scrypt_p) || scrypt_p <= 0)
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goto opthelp;
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break;
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#endif
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}
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}
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argc = opt_num_rest();
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if (argc != 0)
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goto opthelp;
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private = 1;
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if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
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BIO_printf(bio_err, "Error getting passwords\n");
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goto end;
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}
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if ((pbe_nid == -1) && cipher == NULL)
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cipher = EVP_aes_256_cbc();
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in = bio_open_default(infile, 'r', informat);
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if (in == NULL)
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goto end;
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out = bio_open_owner(outfile, outformat, private);
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if (out == NULL)
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goto end;
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if (topk8) {
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pkey = load_key(infile, informat, 1, passin, e, "key");
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if (pkey == NULL)
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goto end;
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if ((p8inf = EVP_PKEY2PKCS8(pkey)) == NULL) {
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BIO_printf(bio_err, "Error converting key\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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if (nocrypt) {
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assert(private);
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if (outformat == FORMAT_PEM) {
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PEM_write_bio_PKCS8_PRIV_KEY_INFO(out, p8inf);
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} else if (outformat == FORMAT_ASN1) {
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i2d_PKCS8_PRIV_KEY_INFO_bio(out, p8inf);
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} else {
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BIO_printf(bio_err, "Bad format specified for key\n");
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goto end;
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}
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} else {
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X509_ALGOR *pbe;
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if (cipher) {
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#ifndef OPENSSL_NO_SCRYPT
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if (scrypt_N && scrypt_r && scrypt_p)
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pbe = PKCS5_pbe2_set_scrypt(cipher, NULL, 0, NULL,
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scrypt_N, scrypt_r, scrypt_p);
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else
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#endif
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pbe = PKCS5_pbe2_set_iv(cipher, iter, NULL, 0, NULL,
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pbe_nid);
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} else {
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pbe = PKCS5_pbe_set(pbe_nid, iter, NULL, 0);
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}
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if (pbe == NULL) {
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BIO_printf(bio_err, "Error setting PBE algorithm\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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if (passout != NULL) {
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p8pass = passout;
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} else if (1) {
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/* To avoid bit rot */
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#ifndef OPENSSL_NO_UI_CONSOLE
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p8pass = pass;
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if (EVP_read_pw_string
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(pass, sizeof(pass), "Enter Encryption Password:", 1)) {
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X509_ALGOR_free(pbe);
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goto end;
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}
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} else {
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#endif
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BIO_printf(bio_err, "Password required\n");
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goto end;
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}
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p8 = PKCS8_set0_pbe(p8pass, strlen(p8pass), p8inf, pbe);
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if (p8 == NULL) {
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X509_ALGOR_free(pbe);
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BIO_printf(bio_err, "Error encrypting key\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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assert(private);
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if (outformat == FORMAT_PEM)
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PEM_write_bio_PKCS8(out, p8);
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else if (outformat == FORMAT_ASN1)
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i2d_PKCS8_bio(out, p8);
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else {
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BIO_printf(bio_err, "Bad format specified for key\n");
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goto end;
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}
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}
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ret = 0;
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goto end;
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}
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if (nocrypt) {
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if (informat == FORMAT_PEM) {
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p8inf = PEM_read_bio_PKCS8_PRIV_KEY_INFO(in, NULL, NULL, NULL);
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} else if (informat == FORMAT_ASN1) {
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p8inf = d2i_PKCS8_PRIV_KEY_INFO_bio(in, NULL);
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} else {
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BIO_printf(bio_err, "Bad format specified for key\n");
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goto end;
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}
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} else {
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if (informat == FORMAT_PEM) {
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p8 = PEM_read_bio_PKCS8(in, NULL, NULL, NULL);
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} else if (informat == FORMAT_ASN1) {
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p8 = d2i_PKCS8_bio(in, NULL);
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} else {
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BIO_printf(bio_err, "Bad format specified for key\n");
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goto end;
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}
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if (p8 == NULL) {
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BIO_printf(bio_err, "Error reading key\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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if (passin != NULL) {
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p8pass = passin;
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} else if (1) {
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#ifndef OPENSSL_NO_UI_CONSOLE
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p8pass = pass;
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if (EVP_read_pw_string(pass, sizeof(pass), "Enter Password:", 0)) {
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BIO_printf(bio_err, "Can't read Password\n");
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goto end;
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}
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} else {
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#endif
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BIO_printf(bio_err, "Password required\n");
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goto end;
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}
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p8inf = PKCS8_decrypt(p8, p8pass, strlen(p8pass));
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}
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if (p8inf == NULL) {
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BIO_printf(bio_err, "Error decrypting key\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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if ((pkey = EVP_PKCS82PKEY(p8inf)) == NULL) {
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BIO_printf(bio_err, "Error converting key\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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assert(private);
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if (outformat == FORMAT_PEM) {
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if (traditional)
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PEM_write_bio_PrivateKey_traditional(out, pkey, NULL, NULL, 0,
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NULL, passout);
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else
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PEM_write_bio_PrivateKey(out, pkey, NULL, NULL, 0, NULL, passout);
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} else if (outformat == FORMAT_ASN1) {
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i2d_PrivateKey_bio(out, pkey);
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} else {
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BIO_printf(bio_err, "Bad format specified for key\n");
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goto end;
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}
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ret = 0;
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end:
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X509_SIG_free(p8);
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PKCS8_PRIV_KEY_INFO_free(p8inf);
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EVP_PKEY_free(pkey);
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release_engine(e);
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BIO_free_all(out);
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BIO_free(in);
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OPENSSL_free(passin);
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OPENSSL_free(passout);
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return ret;
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}
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