| /* |
| * Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the OpenSSL license (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 <string.h> |
| #include "apps.h" |
| #include "progs.h" |
| #include <openssl/pem.h> |
| #include <openssl/err.h> |
| #include <openssl/evp.h> |
| #ifndef OPENSSL_NO_ENGINE |
| # include <openssl/engine.h> |
| #endif |
| |
| static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e); |
| static int genpkey_cb(EVP_PKEY_CTX *ctx); |
| |
| typedef enum OPTION_choice { |
| OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, |
| OPT_ENGINE, OPT_OUTFORM, OPT_OUT, OPT_PASS, OPT_PARAMFILE, |
| OPT_ALGORITHM, OPT_PKEYOPT, OPT_GENPARAM, OPT_TEXT, OPT_CIPHER |
| } OPTION_CHOICE; |
| |
| const OPTIONS genpkey_options[] = { |
| {"help", OPT_HELP, '-', "Display this summary"}, |
| {"out", OPT_OUT, '>', "Output file"}, |
| {"outform", OPT_OUTFORM, 'F', "output format (DER or PEM)"}, |
| {"pass", OPT_PASS, 's', "Output file pass phrase source"}, |
| {"paramfile", OPT_PARAMFILE, '<', "Parameters file"}, |
| {"algorithm", OPT_ALGORITHM, 's', "The public key algorithm"}, |
| {"pkeyopt", OPT_PKEYOPT, 's', |
| "Set the public key algorithm option as opt:value"}, |
| {"genparam", OPT_GENPARAM, '-', "Generate parameters, not key"}, |
| {"text", OPT_TEXT, '-', "Print the in text"}, |
| {"", OPT_CIPHER, '-', "Cipher to use to encrypt the key"}, |
| #ifndef OPENSSL_NO_ENGINE |
| {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, |
| #endif |
| /* This is deliberately last. */ |
| {OPT_HELP_STR, 1, 1, |
| "Order of options may be important! See the documentation.\n"}, |
| {NULL} |
| }; |
| |
| int genpkey_main(int argc, char **argv) |
| { |
| BIO *in = NULL, *out = NULL; |
| ENGINE *e = NULL; |
| EVP_PKEY *pkey = NULL; |
| EVP_PKEY_CTX *ctx = NULL; |
| char *outfile = NULL, *passarg = NULL, *pass = NULL, *prog; |
| const EVP_CIPHER *cipher = NULL; |
| OPTION_CHOICE o; |
| int outformat = FORMAT_PEM, text = 0, ret = 1, rv, do_param = 0; |
| int private = 0; |
| |
| prog = opt_init(argc, argv, genpkey_options); |
| while ((o = opt_next()) != OPT_EOF) { |
| switch (o) { |
| case OPT_EOF: |
| case OPT_ERR: |
| opthelp: |
| BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); |
| goto end; |
| case OPT_HELP: |
| ret = 0; |
| opt_help(genpkey_options); |
| goto end; |
| case OPT_OUTFORM: |
| if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat)) |
| goto opthelp; |
| break; |
| case OPT_OUT: |
| outfile = opt_arg(); |
| break; |
| case OPT_PASS: |
| passarg = opt_arg(); |
| break; |
| case OPT_ENGINE: |
| e = setup_engine(opt_arg(), 0); |
| break; |
| case OPT_PARAMFILE: |
| if (do_param == 1) |
| goto opthelp; |
| if (!init_keygen_file(&ctx, opt_arg(), e)) |
| goto end; |
| break; |
| case OPT_ALGORITHM: |
| if (!init_gen_str(&ctx, opt_arg(), e, do_param)) |
| goto end; |
| break; |
| case OPT_PKEYOPT: |
| if (ctx == NULL) { |
| BIO_printf(bio_err, "%s: No keytype specified.\n", prog); |
| goto opthelp; |
| } |
| if (pkey_ctrl_string(ctx, opt_arg()) <= 0) { |
| BIO_printf(bio_err, |
| "%s: Error setting %s parameter:\n", |
| prog, opt_arg()); |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| break; |
| case OPT_GENPARAM: |
| if (ctx != NULL) |
| goto opthelp; |
| do_param = 1; |
| break; |
| case OPT_TEXT: |
| text = 1; |
| break; |
| case OPT_CIPHER: |
| if (!opt_cipher(opt_unknown(), &cipher) |
| || do_param == 1) |
| goto opthelp; |
| if (EVP_CIPHER_mode(cipher) == EVP_CIPH_GCM_MODE || |
| EVP_CIPHER_mode(cipher) == EVP_CIPH_CCM_MODE || |
| EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE || |
| EVP_CIPHER_mode(cipher) == EVP_CIPH_OCB_MODE) { |
| BIO_printf(bio_err, "%s: cipher mode not supported\n", prog); |
| goto end; |
| } |
| } |
| } |
| argc = opt_num_rest(); |
| if (argc != 0) |
| goto opthelp; |
| |
| private = do_param ? 0 : 1; |
| |
| if (ctx == NULL) |
| goto opthelp; |
| |
| if (!app_passwd(passarg, NULL, &pass, NULL)) { |
| BIO_puts(bio_err, "Error getting password\n"); |
| goto end; |
| } |
| |
| out = bio_open_owner(outfile, outformat, private); |
| if (out == NULL) |
| goto end; |
| |
| EVP_PKEY_CTX_set_cb(ctx, genpkey_cb); |
| EVP_PKEY_CTX_set_app_data(ctx, bio_err); |
| |
| if (do_param) { |
| if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) { |
| BIO_puts(bio_err, "Error generating parameters\n"); |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| } else { |
| if (EVP_PKEY_keygen(ctx, &pkey) <= 0) { |
| BIO_puts(bio_err, "Error generating key\n"); |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| } |
| |
| if (do_param) { |
| rv = PEM_write_bio_Parameters(out, pkey); |
| } else if (outformat == FORMAT_PEM) { |
| assert(private); |
| rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, NULL, pass); |
| } else if (outformat == FORMAT_ASN1) { |
| assert(private); |
| rv = i2d_PrivateKey_bio(out, pkey); |
| } else { |
| BIO_printf(bio_err, "Bad format specified for key\n"); |
| goto end; |
| } |
| |
| ret = 0; |
| |
| if (rv <= 0) { |
| BIO_puts(bio_err, "Error writing key\n"); |
| ERR_print_errors(bio_err); |
| ret = 1; |
| } |
| |
| if (text) { |
| if (do_param) |
| rv = EVP_PKEY_print_params(out, pkey, 0, NULL); |
| else |
| rv = EVP_PKEY_print_private(out, pkey, 0, NULL); |
| |
| if (rv <= 0) { |
| BIO_puts(bio_err, "Error printing key\n"); |
| ERR_print_errors(bio_err); |
| ret = 1; |
| } |
| } |
| |
| end: |
| EVP_PKEY_free(pkey); |
| EVP_PKEY_CTX_free(ctx); |
| BIO_free_all(out); |
| BIO_free(in); |
| release_engine(e); |
| OPENSSL_free(pass); |
| return ret; |
| } |
| |
| static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e) |
| { |
| BIO *pbio; |
| EVP_PKEY *pkey = NULL; |
| EVP_PKEY_CTX *ctx = NULL; |
| if (*pctx) { |
| BIO_puts(bio_err, "Parameters already set!\n"); |
| return 0; |
| } |
| |
| pbio = BIO_new_file(file, "r"); |
| if (!pbio) { |
| BIO_printf(bio_err, "Can't open parameter file %s\n", file); |
| return 0; |
| } |
| |
| pkey = PEM_read_bio_Parameters(pbio, NULL); |
| BIO_free(pbio); |
| |
| if (!pkey) { |
| BIO_printf(bio_err, "Error reading parameter file %s\n", file); |
| return 0; |
| } |
| |
| ctx = EVP_PKEY_CTX_new(pkey, e); |
| if (ctx == NULL) |
| goto err; |
| if (EVP_PKEY_keygen_init(ctx) <= 0) |
| goto err; |
| EVP_PKEY_free(pkey); |
| *pctx = ctx; |
| return 1; |
| |
| err: |
| BIO_puts(bio_err, "Error initializing context\n"); |
| ERR_print_errors(bio_err); |
| EVP_PKEY_CTX_free(ctx); |
| EVP_PKEY_free(pkey); |
| return 0; |
| |
| } |
| |
| int init_gen_str(EVP_PKEY_CTX **pctx, |
| const char *algname, ENGINE *e, int do_param) |
| { |
| EVP_PKEY_CTX *ctx = NULL; |
| const EVP_PKEY_ASN1_METHOD *ameth; |
| ENGINE *tmpeng = NULL; |
| int pkey_id; |
| |
| if (*pctx) { |
| BIO_puts(bio_err, "Algorithm already set!\n"); |
| return 0; |
| } |
| |
| ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1); |
| |
| #ifndef OPENSSL_NO_ENGINE |
| if (!ameth && e) |
| ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1); |
| #endif |
| |
| if (!ameth) { |
| BIO_printf(bio_err, "Algorithm %s not found\n", algname); |
| return 0; |
| } |
| |
| ERR_clear_error(); |
| |
| EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth); |
| #ifndef OPENSSL_NO_ENGINE |
| ENGINE_finish(tmpeng); |
| #endif |
| ctx = EVP_PKEY_CTX_new_id(pkey_id, e); |
| |
| if (!ctx) |
| goto err; |
| if (do_param) { |
| if (EVP_PKEY_paramgen_init(ctx) <= 0) |
| goto err; |
| } else { |
| if (EVP_PKEY_keygen_init(ctx) <= 0) |
| goto err; |
| } |
| |
| *pctx = ctx; |
| return 1; |
| |
| err: |
| BIO_printf(bio_err, "Error initializing %s context\n", algname); |
| ERR_print_errors(bio_err); |
| EVP_PKEY_CTX_free(ctx); |
| return 0; |
| |
| } |
| |
| static int genpkey_cb(EVP_PKEY_CTX *ctx) |
| { |
| char c = '*'; |
| BIO *b = EVP_PKEY_CTX_get_app_data(ctx); |
| int p; |
| p = EVP_PKEY_CTX_get_keygen_info(ctx, 0); |
| if (p == 0) |
| c = '.'; |
| if (p == 1) |
| c = '+'; |
| if (p == 2) |
| c = '*'; |
| if (p == 3) |
| c = '\n'; |
| BIO_write(b, &c, 1); |
| (void)BIO_flush(b); |
| return 1; |
| } |