| /* |
| * Copyright 1995-2022 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 |
| */ |
| |
| /* Necessary for legacy RSA public key export */ |
| #define OPENSSL_SUPPRESS_DEPRECATED |
| |
| #include <openssl/opensslconf.h> |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <time.h> |
| #include "apps.h" |
| #include "progs.h" |
| #include <openssl/bio.h> |
| #include <openssl/err.h> |
| #include <openssl/rsa.h> |
| #include <openssl/evp.h> |
| #include <openssl/x509.h> |
| #include <openssl/pem.h> |
| #include <openssl/bn.h> |
| #include <openssl/encoder.h> |
| |
| /* |
| * This include is to get OSSL_KEYMGMT_SELECT_*, which feels a bit |
| * much just for those macros... they might serve better as EVP macros. |
| */ |
| #include <openssl/core_dispatch.h> |
| |
| #ifndef OPENSSL_NO_RC4 |
| # define DEFAULT_PVK_ENCR_STRENGTH 2 |
| #else |
| # define DEFAULT_PVK_ENCR_STRENGTH 0 |
| #endif |
| |
| typedef enum OPTION_choice { |
| OPT_COMMON, |
| OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT, |
| OPT_PUBIN, OPT_PUBOUT, OPT_PASSOUT, OPT_PASSIN, |
| OPT_RSAPUBKEY_IN, OPT_RSAPUBKEY_OUT, |
| /* Do not change the order here; see case statements below */ |
| OPT_PVK_NONE, OPT_PVK_WEAK, OPT_PVK_STRONG, |
| OPT_NOOUT, OPT_TEXT, OPT_MODULUS, OPT_CHECK, OPT_CIPHER, |
| OPT_PROV_ENUM, OPT_TRADITIONAL |
| } OPTION_CHOICE; |
| |
| const OPTIONS rsa_options[] = { |
| OPT_SECTION("General"), |
| {"help", OPT_HELP, '-', "Display this summary"}, |
| {"check", OPT_CHECK, '-', "Verify key consistency"}, |
| {"", OPT_CIPHER, '-', "Any supported cipher"}, |
| #ifndef OPENSSL_NO_ENGINE |
| {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, |
| #endif |
| |
| OPT_SECTION("Input"), |
| {"in", OPT_IN, 's', "Input file"}, |
| {"inform", OPT_INFORM, 'f', "Input format (DER/PEM/P12/ENGINE"}, |
| {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"}, |
| {"RSAPublicKey_in", OPT_RSAPUBKEY_IN, '-', "Input is an RSAPublicKey"}, |
| {"passin", OPT_PASSIN, 's', "Input file pass phrase source"}, |
| |
| OPT_SECTION("Output"), |
| {"out", OPT_OUT, '>', "Output file"}, |
| {"outform", OPT_OUTFORM, 'f', "Output format, one of DER PEM PVK"}, |
| {"pubout", OPT_PUBOUT, '-', "Output a public key"}, |
| {"RSAPublicKey_out", OPT_RSAPUBKEY_OUT, '-', "Output is an RSAPublicKey"}, |
| {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"}, |
| {"noout", OPT_NOOUT, '-', "Don't print key out"}, |
| {"text", OPT_TEXT, '-', "Print the key in text"}, |
| {"modulus", OPT_MODULUS, '-', "Print the RSA key modulus"}, |
| {"traditional", OPT_TRADITIONAL, '-', |
| "Use traditional format for private keys"}, |
| |
| #ifndef OPENSSL_NO_RC4 |
| OPT_SECTION("PVK"), |
| {"pvk-strong", OPT_PVK_STRONG, '-', "Enable 'Strong' PVK encoding level (default)"}, |
| {"pvk-weak", OPT_PVK_WEAK, '-', "Enable 'Weak' PVK encoding level"}, |
| {"pvk-none", OPT_PVK_NONE, '-', "Don't enforce PVK encoding"}, |
| #endif |
| |
| OPT_PROV_OPTIONS, |
| {NULL} |
| }; |
| |
| static int try_legacy_encoding(EVP_PKEY *pkey, int outformat, int pubout, |
| BIO *out) |
| { |
| int ret = 0; |
| #ifndef OPENSSL_NO_DEPRECATED_3_0 |
| const RSA *rsa = EVP_PKEY_get0_RSA(pkey); |
| |
| if (rsa == NULL) |
| return 0; |
| |
| if (outformat == FORMAT_ASN1) { |
| if (pubout == 2) |
| ret = i2d_RSAPublicKey_bio(out, rsa) > 0; |
| else |
| ret = i2d_RSA_PUBKEY_bio(out, rsa) > 0; |
| } else if (outformat == FORMAT_PEM) { |
| if (pubout == 2) |
| ret = PEM_write_bio_RSAPublicKey(out, rsa) > 0; |
| else |
| ret = PEM_write_bio_RSA_PUBKEY(out, rsa) > 0; |
| # ifndef OPENSSL_NO_DSA |
| } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) { |
| ret = i2b_PublicKey_bio(out, pkey) > 0; |
| # endif |
| } |
| #endif |
| |
| return ret; |
| } |
| |
| int rsa_main(int argc, char **argv) |
| { |
| ENGINE *e = NULL; |
| BIO *out = NULL; |
| EVP_PKEY *pkey = NULL; |
| EVP_PKEY_CTX *pctx; |
| EVP_CIPHER *enc = NULL; |
| char *infile = NULL, *outfile = NULL, *ciphername = NULL, *prog; |
| char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL; |
| int private = 0; |
| int informat = FORMAT_UNDEF, outformat = FORMAT_PEM, text = 0, check = 0; |
| int noout = 0, modulus = 0, pubin = 0, pubout = 0, ret = 1; |
| int pvk_encr = DEFAULT_PVK_ENCR_STRENGTH; |
| OPTION_CHOICE o; |
| int traditional = 0; |
| const char *output_type = NULL; |
| const char *output_structure = NULL; |
| int selection = 0; |
| OSSL_ENCODER_CTX *ectx = NULL; |
| |
| opt_set_unknown_name("cipher"); |
| prog = opt_init(argc, argv, rsa_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: |
| opt_help(rsa_options); |
| ret = 0; |
| goto end; |
| case OPT_INFORM: |
| if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat)) |
| goto opthelp; |
| break; |
| case OPT_IN: |
| infile = opt_arg(); |
| break; |
| case OPT_OUTFORM: |
| if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat)) |
| goto opthelp; |
| break; |
| case OPT_OUT: |
| outfile = opt_arg(); |
| break; |
| case OPT_PASSIN: |
| passinarg = opt_arg(); |
| break; |
| case OPT_PASSOUT: |
| passoutarg = opt_arg(); |
| break; |
| case OPT_ENGINE: |
| e = setup_engine(opt_arg(), 0); |
| break; |
| case OPT_PUBIN: |
| pubin = 1; |
| break; |
| case OPT_PUBOUT: |
| pubout = 1; |
| break; |
| case OPT_RSAPUBKEY_IN: |
| pubin = 2; |
| break; |
| case OPT_RSAPUBKEY_OUT: |
| pubout = 2; |
| break; |
| case OPT_PVK_STRONG: /* pvk_encr:= 2 */ |
| case OPT_PVK_WEAK: /* pvk_encr:= 1 */ |
| case OPT_PVK_NONE: /* pvk_encr:= 0 */ |
| pvk_encr = (o - OPT_PVK_NONE); |
| break; |
| case OPT_NOOUT: |
| noout = 1; |
| break; |
| case OPT_TEXT: |
| text = 1; |
| break; |
| case OPT_MODULUS: |
| modulus = 1; |
| break; |
| case OPT_CHECK: |
| check = 1; |
| break; |
| case OPT_CIPHER: |
| ciphername = opt_unknown(); |
| break; |
| case OPT_PROV_CASES: |
| if (!opt_provider(o)) |
| goto end; |
| break; |
| case OPT_TRADITIONAL: |
| traditional = 1; |
| break; |
| } |
| } |
| |
| /* No extra arguments. */ |
| if (!opt_check_rest_arg(NULL)) |
| goto opthelp; |
| |
| if (!opt_cipher(ciphername, &enc)) |
| goto opthelp; |
| private = (text && !pubin) || (!pubout && !noout) ? 1 : 0; |
| |
| if (!app_passwd(passinarg, passoutarg, &passin, &passout)) { |
| BIO_printf(bio_err, "Error getting passwords\n"); |
| goto end; |
| } |
| if (check && pubin) { |
| BIO_printf(bio_err, "Only private keys can be checked\n"); |
| goto end; |
| } |
| |
| if (pubin) { |
| int tmpformat = FORMAT_UNDEF; |
| |
| if (pubin == 2) { |
| if (informat == FORMAT_PEM) |
| tmpformat = FORMAT_PEMRSA; |
| else if (informat == FORMAT_ASN1) |
| tmpformat = FORMAT_ASN1RSA; |
| } else { |
| tmpformat = informat; |
| } |
| |
| pkey = load_pubkey(infile, tmpformat, 1, passin, e, "public key"); |
| } else { |
| pkey = load_key(infile, informat, 1, passin, e, "private key"); |
| } |
| |
| if (pkey == NULL) { |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| if (!EVP_PKEY_is_a(pkey, "RSA") && !EVP_PKEY_is_a(pkey, "RSA-PSS")) { |
| BIO_printf(bio_err, "Not an RSA key\n"); |
| goto end; |
| } |
| |
| out = bio_open_owner(outfile, outformat, private); |
| if (out == NULL) |
| goto end; |
| |
| if (text) { |
| assert(pubin || private); |
| if ((pubin && EVP_PKEY_print_public(out, pkey, 0, NULL) <= 0) |
| || (!pubin && EVP_PKEY_print_private(out, pkey, 0, NULL) <= 0)) { |
| perror(outfile); |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| } |
| |
| if (modulus) { |
| BIGNUM *n = NULL; |
| |
| /* Every RSA key has an 'n' */ |
| EVP_PKEY_get_bn_param(pkey, "n", &n); |
| BIO_printf(out, "Modulus="); |
| BN_print(out, n); |
| BIO_printf(out, "\n"); |
| BN_free(n); |
| } |
| |
| if (check) { |
| int r; |
| |
| pctx = EVP_PKEY_CTX_new_from_pkey(NULL, pkey, NULL); |
| if (pctx == NULL) { |
| BIO_printf(bio_err, "RSA unable to create PKEY context\n"); |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| r = EVP_PKEY_check(pctx); |
| EVP_PKEY_CTX_free(pctx); |
| |
| if (r == 1) { |
| BIO_printf(out, "RSA key ok\n"); |
| } else if (r == 0) { |
| BIO_printf(bio_err, "RSA key not ok\n"); |
| ERR_print_errors(bio_err); |
| } else if (r == -1) { |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| } |
| |
| if (noout) { |
| ret = 0; |
| goto end; |
| } |
| BIO_printf(bio_err, "writing RSA key\n"); |
| |
| /* Choose output type for the format */ |
| if (outformat == FORMAT_ASN1) { |
| output_type = "DER"; |
| } else if (outformat == FORMAT_PEM) { |
| output_type = "PEM"; |
| } else if (outformat == FORMAT_MSBLOB) { |
| output_type = "MSBLOB"; |
| } else if (outformat == FORMAT_PVK) { |
| if (pubin) { |
| BIO_printf(bio_err, "PVK form impossible with public key input\n"); |
| goto end; |
| } |
| output_type = "PVK"; |
| } else { |
| BIO_printf(bio_err, "bad output format specified for outfile\n"); |
| goto end; |
| } |
| |
| /* Select what you want in the output */ |
| if (pubout || pubin) { |
| selection = OSSL_KEYMGMT_SELECT_PUBLIC_KEY; |
| } else { |
| assert(private); |
| selection = (OSSL_KEYMGMT_SELECT_KEYPAIR |
| | OSSL_KEYMGMT_SELECT_ALL_PARAMETERS); |
| } |
| |
| /* For DER based output, select the desired output structure */ |
| if (outformat == FORMAT_ASN1 || outformat == FORMAT_PEM) { |
| if (pubout || pubin) { |
| if (pubout == 2) |
| output_structure = "pkcs1"; /* "type-specific" would work too */ |
| else |
| output_structure = "SubjectPublicKeyInfo"; |
| } else { |
| assert(private); |
| if (traditional) |
| output_structure = "pkcs1"; /* "type-specific" would work too */ |
| else |
| output_structure = "PrivateKeyInfo"; |
| } |
| } |
| |
| /* Now, perform the encoding */ |
| ectx = OSSL_ENCODER_CTX_new_for_pkey(pkey, selection, |
| output_type, output_structure, |
| NULL); |
| if (OSSL_ENCODER_CTX_get_num_encoders(ectx) == 0) { |
| if ((!pubout && !pubin) |
| || !try_legacy_encoding(pkey, outformat, pubout, out)) |
| BIO_printf(bio_err, "%s format not supported\n", output_type); |
| else |
| ret = 0; |
| goto end; |
| } |
| |
| /* Passphrase setup */ |
| if (enc != NULL) |
| OSSL_ENCODER_CTX_set_cipher(ectx, EVP_CIPHER_get0_name(enc), NULL); |
| |
| /* Default passphrase prompter */ |
| if (enc != NULL || outformat == FORMAT_PVK) { |
| OSSL_ENCODER_CTX_set_passphrase_ui(ectx, get_ui_method(), NULL); |
| if (passout != NULL) |
| /* When passout given, override the passphrase prompter */ |
| OSSL_ENCODER_CTX_set_passphrase(ectx, |
| (const unsigned char *)passout, |
| strlen(passout)); |
| } |
| |
| /* PVK is a bit special... */ |
| if (outformat == FORMAT_PVK) { |
| OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; |
| |
| params[0] = OSSL_PARAM_construct_int("encrypt-level", &pvk_encr); |
| if (!OSSL_ENCODER_CTX_set_params(ectx, params)) { |
| BIO_printf(bio_err, "invalid PVK encryption level\n"); |
| goto end; |
| } |
| } |
| |
| if (!OSSL_ENCODER_to_bio(ectx, out)) { |
| BIO_printf(bio_err, "unable to write key\n"); |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| ret = 0; |
| end: |
| OSSL_ENCODER_CTX_free(ectx); |
| release_engine(e); |
| BIO_free_all(out); |
| EVP_PKEY_free(pkey); |
| EVP_CIPHER_free(enc); |
| OPENSSL_free(passin); |
| OPENSSL_free(passout); |
| return ret; |
| } |
