apps/rsautl.c - third_party/openssl - Git at Google

 /*
  * Copyright 2000-2021 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 <openssl/opensslconf.h>

 #include "apps.h"
 #include "progs.h"
 #include <string.h>
 #include <openssl/err.h>
 #include <openssl/pem.h>
 #include <openssl/rsa.h>

 #define RSA_SIGN        1
 #define RSA_VERIFY      2
 #define RSA_ENCRYPT     3
 #define RSA_DECRYPT     4

 #define KEY_PRIVKEY     1
 #define KEY_PUBKEY      2
 #define KEY_CERT        3

 typedef enum OPTION_choice {
     OPT_COMMON,
     OPT_ENGINE, OPT_IN, OPT_OUT, OPT_ASN1PARSE, OPT_HEXDUMP,
     OPT_RSA_RAW, OPT_OAEP, OPT_PKCS, OPT_X931,
     OPT_SIGN, OPT_VERIFY, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
     OPT_PUBIN, OPT_CERTIN, OPT_INKEY, OPT_PASSIN, OPT_KEYFORM,
     OPT_R_ENUM, OPT_PROV_ENUM
 } OPTION_CHOICE;

 const OPTIONS rsautl_options[] = {
     OPT_SECTION("General"),
     {"help", OPT_HELP, '-', "Display this summary"},
     {"sign", OPT_SIGN, '-', "Sign with private key"},
     {"verify", OPT_VERIFY, '-', "Verify with public key"},
     {"encrypt", OPT_ENCRYPT, '-', "Encrypt with public key"},
     {"decrypt", OPT_DECRYPT, '-', "Decrypt with private key"},
 #ifndef OPENSSL_NO_ENGINE
     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
 #endif

     OPT_SECTION("Input"),
     {"in", OPT_IN, '<', "Input file"},
     {"inkey", OPT_INKEY, 's', "Input key"},
     {"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
     {"pubin", OPT_PUBIN, '-', "Input is an RSA public"},
     {"certin", OPT_CERTIN, '-', "Input is a cert carrying an RSA public key"},
     {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},

     OPT_SECTION("Output"),
     {"out", OPT_OUT, '>', "Output file"},
     {"raw", OPT_RSA_RAW, '-', "Use no padding"},
     {"pkcs", OPT_PKCS, '-', "Use PKCS#1 v1.5 padding (default)"},
     {"x931", OPT_X931, '-', "Use ANSI X9.31 padding"},
     {"oaep", OPT_OAEP, '-', "Use PKCS#1 OAEP"},
     {"asn1parse", OPT_ASN1PARSE, '-',
      "Run output through asn1parse; useful with -verify"},
     {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},

     OPT_R_OPTIONS,
     OPT_PROV_OPTIONS,
     {NULL}
 };

 int rsautl_main(int argc, char **argv)
 {
     BIO *in = NULL, *out = NULL;
     ENGINE *e = NULL;
     EVP_PKEY *pkey = NULL;
     EVP_PKEY_CTX *ctx = NULL;
     X509 *x;
     char *infile = NULL, *outfile = NULL, *keyfile = NULL;
     char *passinarg = NULL, *passin = NULL, *prog;
     char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
     unsigned char *rsa_in = NULL, *rsa_out = NULL, pad = RSA_PKCS1_PADDING;
     size_t rsa_inlen, rsa_outlen = 0;
     int keyformat = FORMAT_UNDEF, keysize, ret = 1, rv;
     int hexdump = 0, asn1parse = 0, need_priv = 0, rev = 0;
     OPTION_CHOICE o;

     prog = opt_init(argc, argv, rsautl_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(rsautl_options);
             ret = 0;
             goto end;
         case OPT_KEYFORM:
             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
                 goto opthelp;
             break;
         case OPT_IN:
             infile = opt_arg();
             break;
         case OPT_OUT:
             outfile = opt_arg();
             break;
         case OPT_ENGINE:
             e = setup_engine(opt_arg(), 0);
             break;
         case OPT_ASN1PARSE:
             asn1parse = 1;
             break;
         case OPT_HEXDUMP:
             hexdump = 1;
             break;
         case OPT_RSA_RAW:
             pad = RSA_NO_PADDING;
             break;
         case OPT_OAEP:
             pad = RSA_PKCS1_OAEP_PADDING;
             break;
         case OPT_PKCS:
             pad = RSA_PKCS1_PADDING;
             break;
         case OPT_X931:
             pad = RSA_X931_PADDING;
             break;
         case OPT_SIGN:
             rsa_mode = RSA_SIGN;
             need_priv = 1;
             break;
         case OPT_VERIFY:
             rsa_mode = RSA_VERIFY;
             break;
         case OPT_REV:
             rev = 1;
             break;
         case OPT_ENCRYPT:
             rsa_mode = RSA_ENCRYPT;
             break;
         case OPT_DECRYPT:
             rsa_mode = RSA_DECRYPT;
             need_priv = 1;
             break;
         case OPT_PUBIN:
             key_type = KEY_PUBKEY;
             break;
         case OPT_CERTIN:
             key_type = KEY_CERT;
             break;
         case OPT_INKEY:
             keyfile = opt_arg();
             break;
         case OPT_PASSIN:
             passinarg = opt_arg();
             break;
         case OPT_R_CASES:
             if (!opt_rand(o))
                 goto end;
             break;
         case OPT_PROV_CASES:
             if (!opt_provider(o))
                 goto end;
             break;
         }
     }

     /* No extra arguments. */
     argc = opt_num_rest();
     if (argc != 0)
         goto opthelp;

     if (!app_RAND_load())
         goto end;

     if (need_priv && (key_type != KEY_PRIVKEY)) {
         BIO_printf(bio_err, "A private key is needed for this operation\n");
         goto end;
     }

     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
         BIO_printf(bio_err, "Error getting password\n");
         goto end;
     }

     switch (key_type) {
     case KEY_PRIVKEY:
         pkey = load_key(keyfile, keyformat, 0, passin, e, "private key");
         break;

     case KEY_PUBKEY:
         pkey = load_pubkey(keyfile, keyformat, 0, NULL, e, "public key");
         break;

     case KEY_CERT:
         x = load_cert(keyfile, FORMAT_UNDEF, "Certificate");
         if (x) {
             pkey = X509_get_pubkey(x);
             X509_free(x);
         }
         break;
     }

     if (pkey == NULL)
         return 1;

     in = bio_open_default(infile, 'r', FORMAT_BINARY);
     if (in == NULL)
         goto end;
     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
     if (out == NULL)
         goto end;

     keysize = EVP_PKEY_get_size(pkey);

     rsa_in = app_malloc(keysize * 2, "hold rsa key");
     rsa_out = app_malloc(keysize, "output rsa key");
     rsa_outlen = keysize;

     /* Read the input data */
     rv = BIO_read(in, rsa_in, keysize * 2);
     if (rv < 0) {
         BIO_printf(bio_err, "Error reading input Data\n");
         goto end;
     }
     rsa_inlen = rv;
     if (rev) {
         size_t i;
         unsigned char ctmp;

         for (i = 0; i < rsa_inlen / 2; i++) {
             ctmp = rsa_in[i];
             rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
             rsa_in[rsa_inlen - 1 - i] = ctmp;
         }
     }

     if ((ctx = EVP_PKEY_CTX_new_from_pkey(NULL, pkey, NULL)) == NULL)
         goto end;

     switch (rsa_mode) {
     case RSA_VERIFY:
         rv = EVP_PKEY_verify_recover_init(ctx)
             && EVP_PKEY_CTX_set_rsa_padding(ctx, pad)
             && EVP_PKEY_verify_recover(ctx, rsa_out, &rsa_outlen,
                                        rsa_in, rsa_inlen);
         break;
     case RSA_SIGN:
         rv = EVP_PKEY_sign_init(ctx)
             && EVP_PKEY_CTX_set_rsa_padding(ctx, pad)
             && EVP_PKEY_sign(ctx, rsa_out, &rsa_outlen, rsa_in, rsa_inlen);
         break;
     case RSA_ENCRYPT:
         rv = EVP_PKEY_encrypt_init(ctx)
             && EVP_PKEY_CTX_set_rsa_padding(ctx, pad)
             && EVP_PKEY_encrypt(ctx, rsa_out, &rsa_outlen, rsa_in, rsa_inlen);
         break;
     case RSA_DECRYPT:
         rv = EVP_PKEY_decrypt_init(ctx)
             && EVP_PKEY_CTX_set_rsa_padding(ctx, pad)
             && EVP_PKEY_decrypt(ctx, rsa_out, &rsa_outlen, rsa_in, rsa_inlen);
         break;
     }

     if (!rv) {
         BIO_printf(bio_err, "RSA operation error\n");
         ERR_print_errors(bio_err);
         goto end;
     }
     ret = 0;
     if (asn1parse) {
         if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
             ERR_print_errors(bio_err);
         }
     } else if (hexdump) {
         BIO_dump(out, (char *)rsa_out, rsa_outlen);
     } else {
         BIO_write(out, rsa_out, rsa_outlen);
     }
  end:
     EVP_PKEY_CTX_free(ctx);
     EVP_PKEY_free(pkey);
     release_engine(e);
     BIO_free(in);
     BIO_free_all(out);
     OPENSSL_free(rsa_in);
     OPENSSL_free(rsa_out);
     OPENSSL_free(passin);
     return ret;
 }
	/*
	* Copyright 2000-2021 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 <openssl/opensslconf.h>

	#include "apps.h"
	#include "progs.h"
	#include <string.h>
	#include <openssl/err.h>
	#include <openssl/pem.h>
	#include <openssl/rsa.h>

	#define RSA_SIGN 1
	#define RSA_VERIFY 2
	#define RSA_ENCRYPT 3
	#define RSA_DECRYPT 4

	#define KEY_PRIVKEY 1
	#define KEY_PUBKEY 2
	#define KEY_CERT 3

	typedef enum OPTION_choice {
	OPT_COMMON,
	OPT_ENGINE, OPT_IN, OPT_OUT, OPT_ASN1PARSE, OPT_HEXDUMP,
	OPT_RSA_RAW, OPT_OAEP, OPT_PKCS, OPT_X931,
	OPT_SIGN, OPT_VERIFY, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
	OPT_PUBIN, OPT_CERTIN, OPT_INKEY, OPT_PASSIN, OPT_KEYFORM,
	OPT_R_ENUM, OPT_PROV_ENUM
	} OPTION_CHOICE;

	const OPTIONS rsautl_options[] = {
	OPT_SECTION("General"),
	{"help", OPT_HELP, '-', "Display this summary"},
	{"sign", OPT_SIGN, '-', "Sign with private key"},
	{"verify", OPT_VERIFY, '-', "Verify with public key"},
	{"encrypt", OPT_ENCRYPT, '-', "Encrypt with public key"},
	{"decrypt", OPT_DECRYPT, '-', "Decrypt with private key"},
	#ifndef OPENSSL_NO_ENGINE
	{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
	#endif

	OPT_SECTION("Input"),
	{"in", OPT_IN, '<', "Input file"},
	{"inkey", OPT_INKEY, 's', "Input key"},
	{"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
	{"pubin", OPT_PUBIN, '-', "Input is an RSA public"},
	{"certin", OPT_CERTIN, '-', "Input is a cert carrying an RSA public key"},
	{"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
	{"passin", OPT_PASSIN, 's', "Input file pass phrase source"},

	OPT_SECTION("Output"),
	{"out", OPT_OUT, '>', "Output file"},
	{"raw", OPT_RSA_RAW, '-', "Use no padding"},
	{"pkcs", OPT_PKCS, '-', "Use PKCS#1 v1.5 padding (default)"},
	{"x931", OPT_X931, '-', "Use ANSI X9.31 padding"},
	{"oaep", OPT_OAEP, '-', "Use PKCS#1 OAEP"},
	{"asn1parse", OPT_ASN1PARSE, '-',
	"Run output through asn1parse; useful with -verify"},
	{"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},

	OPT_R_OPTIONS,
	OPT_PROV_OPTIONS,
	{NULL}
	};

	int rsautl_main(int argc, char **argv)
	{
	BIO in = NULL, out = NULL;
	ENGINE *e = NULL;
	EVP_PKEY *pkey = NULL;
	EVP_PKEY_CTX *ctx = NULL;
	X509 *x;
	char infile = NULL, outfile = NULL, *keyfile = NULL;
	char passinarg = NULL, passin = NULL, *prog;
	char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
	unsigned char rsa_in = NULL, rsa_out = NULL, pad = RSA_PKCS1_PADDING;
	size_t rsa_inlen, rsa_outlen = 0;
	int keyformat = FORMAT_UNDEF, keysize, ret = 1, rv;
	int hexdump = 0, asn1parse = 0, need_priv = 0, rev = 0;
	OPTION_CHOICE o;

	prog = opt_init(argc, argv, rsautl_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(rsautl_options);
	ret = 0;
	goto end;
	case OPT_KEYFORM:
	if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
	goto opthelp;
	break;
	case OPT_IN:
	infile = opt_arg();
	break;
	case OPT_OUT:
	outfile = opt_arg();
	break;
	case OPT_ENGINE:
	e = setup_engine(opt_arg(), 0);
	break;
	case OPT_ASN1PARSE:
	asn1parse = 1;
	break;
	case OPT_HEXDUMP:
	hexdump = 1;
	break;
	case OPT_RSA_RAW:
	pad = RSA_NO_PADDING;
	break;
	case OPT_OAEP:
	pad = RSA_PKCS1_OAEP_PADDING;
	break;
	case OPT_PKCS:
	pad = RSA_PKCS1_PADDING;
	break;
	case OPT_X931:
	pad = RSA_X931_PADDING;
	break;
	case OPT_SIGN:
	rsa_mode = RSA_SIGN;
	need_priv = 1;
	break;
	case OPT_VERIFY:
	rsa_mode = RSA_VERIFY;
	break;
	case OPT_REV:
	rev = 1;
	break;
	case OPT_ENCRYPT:
	rsa_mode = RSA_ENCRYPT;
	break;
	case OPT_DECRYPT:
	rsa_mode = RSA_DECRYPT;
	need_priv = 1;
	break;
	case OPT_PUBIN:
	key_type = KEY_PUBKEY;
	break;
	case OPT_CERTIN:
	key_type = KEY_CERT;
	break;
	case OPT_INKEY:
	keyfile = opt_arg();
	break;
	case OPT_PASSIN:
	passinarg = opt_arg();
	break;
	case OPT_R_CASES:
	if (!opt_rand(o))
	goto end;
	break;
	case OPT_PROV_CASES:
	if (!opt_provider(o))
	goto end;
	break;
	}
	}

	/* No extra arguments. */
	argc = opt_num_rest();
	if (argc != 0)
	goto opthelp;

	if (!app_RAND_load())
	goto end;

	if (need_priv && (key_type != KEY_PRIVKEY)) {
	BIO_printf(bio_err, "A private key is needed for this operation\n");
	goto end;
	}

	if (!app_passwd(passinarg, NULL, &passin, NULL)) {
	BIO_printf(bio_err, "Error getting password\n");
	goto end;
	}

	switch (key_type) {
	case KEY_PRIVKEY:
	pkey = load_key(keyfile, keyformat, 0, passin, e, "private key");
	break;

	case KEY_PUBKEY:
	pkey = load_pubkey(keyfile, keyformat, 0, NULL, e, "public key");
	break;

	case KEY_CERT:
	x = load_cert(keyfile, FORMAT_UNDEF, "Certificate");
	if (x) {
	pkey = X509_get_pubkey(x);
	X509_free(x);
	}
	break;
	}

	if (pkey == NULL)
	return 1;

	in = bio_open_default(infile, 'r', FORMAT_BINARY);
	if (in == NULL)
	goto end;
	out = bio_open_default(outfile, 'w', FORMAT_BINARY);
	if (out == NULL)
	goto end;

	keysize = EVP_PKEY_get_size(pkey);

	rsa_in = app_malloc(keysize * 2, "hold rsa key");
	rsa_out = app_malloc(keysize, "output rsa key");
	rsa_outlen = keysize;

	/* Read the input data */
	rv = BIO_read(in, rsa_in, keysize * 2);
	if (rv < 0) {
	BIO_printf(bio_err, "Error reading input Data\n");
	goto end;
	}
	rsa_inlen = rv;
	if (rev) {
	size_t i;
	unsigned char ctmp;

	for (i = 0; i < rsa_inlen / 2; i++) {
	ctmp = rsa_in[i];
	rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
	rsa_in[rsa_inlen - 1 - i] = ctmp;
	}
	}

	if ((ctx = EVP_PKEY_CTX_new_from_pkey(NULL, pkey, NULL)) == NULL)
	goto end;

	switch (rsa_mode) {
	case RSA_VERIFY:
	rv = EVP_PKEY_verify_recover_init(ctx)
	&& EVP_PKEY_CTX_set_rsa_padding(ctx, pad)
	&& EVP_PKEY_verify_recover(ctx, rsa_out, &rsa_outlen,
	rsa_in, rsa_inlen);
	break;
	case RSA_SIGN:
	rv = EVP_PKEY_sign_init(ctx)
	&& EVP_PKEY_CTX_set_rsa_padding(ctx, pad)
	&& EVP_PKEY_sign(ctx, rsa_out, &rsa_outlen, rsa_in, rsa_inlen);
	break;
	case RSA_ENCRYPT:
	rv = EVP_PKEY_encrypt_init(ctx)
	&& EVP_PKEY_CTX_set_rsa_padding(ctx, pad)
	&& EVP_PKEY_encrypt(ctx, rsa_out, &rsa_outlen, rsa_in, rsa_inlen);
	break;
	case RSA_DECRYPT:
	rv = EVP_PKEY_decrypt_init(ctx)
	&& EVP_PKEY_CTX_set_rsa_padding(ctx, pad)
	&& EVP_PKEY_decrypt(ctx, rsa_out, &rsa_outlen, rsa_in, rsa_inlen);
	break;
	}

	if (!rv) {
	BIO_printf(bio_err, "RSA operation error\n");
	ERR_print_errors(bio_err);
	goto end;
	}
	ret = 0;
	if (asn1parse) {
	if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
	ERR_print_errors(bio_err);
	}
	} else if (hexdump) {
	BIO_dump(out, (char *)rsa_out, rsa_outlen);
	} else {
	BIO_write(out, rsa_out, rsa_outlen);
	}
	end:
	EVP_PKEY_CTX_free(ctx);
	EVP_PKEY_free(pkey);
	release_engine(e);
	BIO_free(in);
	BIO_free_all(out);
	OPENSSL_free(rsa_in);
	OPENSSL_free(rsa_out);
	OPENSSL_free(passin);
	return ret;
	}