526 lines
16 KiB
C
526 lines
16 KiB
C
/*
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* Copyright 2006-2018 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 "apps.h"
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#include "progs.h"
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#include <string.h>
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#include <openssl/err.h>
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#include <openssl/pem.h>
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#include <openssl/evp.h>
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#define KEY_NONE 0
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#define KEY_PRIVKEY 1
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#define KEY_PUBKEY 2
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#define KEY_CERT 3
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static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
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const char *keyfile, int keyform, int key_type,
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char *passinarg, int pkey_op, ENGINE *e,
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const int impl);
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static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
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ENGINE *e);
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static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
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unsigned char *out, size_t *poutlen,
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const unsigned char *in, size_t inlen);
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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_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
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OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
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OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
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OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
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OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_KDF, OPT_KDFLEN,
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OPT_R_ENUM
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} OPTION_CHOICE;
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const OPTIONS pkeyutl_options[] = {
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{"help", OPT_HELP, '-', "Display this summary"},
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{"in", OPT_IN, '<', "Input file - default stdin"},
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{"out", OPT_OUT, '>', "Output file - default stdout"},
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{"pubin", OPT_PUBIN, '-', "Input is a public key"},
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{"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
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{"asn1parse", OPT_ASN1PARSE, '-', "asn1parse the output data"},
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{"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
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{"sign", OPT_SIGN, '-', "Sign input data with private key"},
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{"verify", OPT_VERIFY, '-', "Verify with public key"},
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{"verifyrecover", OPT_VERIFYRECOVER, '-',
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"Verify with public key, recover original data"},
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{"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
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{"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
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{"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
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{"derive", OPT_DERIVE, '-', "Derive shared secret"},
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{"kdf", OPT_KDF, 's', "Use KDF algorithm"},
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{"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
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{"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
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{"inkey", OPT_INKEY, 's', "Input private key file"},
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{"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
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{"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
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{"peerform", OPT_PEERFORM, 'E', "Peer key format - default PEM"},
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{"keyform", OPT_KEYFORM, 'E', "Private key format - default PEM"},
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{"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
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OPT_R_OPTIONS,
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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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{"engine_impl", OPT_ENGINE_IMPL, '-',
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"Also use engine given by -engine for crypto operations"},
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#endif
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{NULL}
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};
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int pkeyutl_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_CTX *ctx = NULL;
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char *infile = NULL, *outfile = NULL, *sigfile = NULL, *passinarg = NULL;
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char hexdump = 0, asn1parse = 0, rev = 0, *prog;
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unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
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OPTION_CHOICE o;
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int buf_inlen = 0, siglen = -1, keyform = FORMAT_PEM, peerform = FORMAT_PEM;
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int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
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int engine_impl = 0;
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int ret = 1, rv = -1;
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size_t buf_outlen;
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const char *inkey = NULL;
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const char *peerkey = NULL;
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const char *kdfalg = NULL;
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int kdflen = 0;
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STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
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prog = opt_init(argc, argv, pkeyutl_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(pkeyutl_options);
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ret = 0;
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goto end;
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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_OUT:
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outfile = opt_arg();
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break;
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case OPT_SIGFILE:
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sigfile = opt_arg();
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break;
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case OPT_ENGINE_IMPL:
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engine_impl = 1;
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break;
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case OPT_INKEY:
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inkey = opt_arg();
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break;
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case OPT_PEERKEY:
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peerkey = opt_arg();
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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_PEERFORM:
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if (!opt_format(opt_arg(), OPT_FMT_PDE, &peerform))
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goto opthelp;
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break;
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case OPT_KEYFORM:
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if (!opt_format(opt_arg(), OPT_FMT_PDE, &keyform))
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goto opthelp;
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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_ENGINE:
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e = setup_engine(opt_arg(), 0);
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break;
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case OPT_PUBIN:
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key_type = KEY_PUBKEY;
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break;
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case OPT_CERTIN:
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key_type = KEY_CERT;
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break;
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case OPT_ASN1PARSE:
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asn1parse = 1;
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break;
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case OPT_HEXDUMP:
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hexdump = 1;
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break;
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case OPT_SIGN:
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pkey_op = EVP_PKEY_OP_SIGN;
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break;
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case OPT_VERIFY:
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pkey_op = EVP_PKEY_OP_VERIFY;
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break;
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case OPT_VERIFYRECOVER:
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pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
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break;
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case OPT_ENCRYPT:
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pkey_op = EVP_PKEY_OP_ENCRYPT;
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break;
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case OPT_DECRYPT:
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pkey_op = EVP_PKEY_OP_DECRYPT;
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break;
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case OPT_DERIVE:
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pkey_op = EVP_PKEY_OP_DERIVE;
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break;
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case OPT_KDF:
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pkey_op = EVP_PKEY_OP_DERIVE;
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key_type = KEY_NONE;
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kdfalg = opt_arg();
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break;
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case OPT_KDFLEN:
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kdflen = atoi(opt_arg());
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break;
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case OPT_REV:
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rev = 1;
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break;
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case OPT_PKEYOPT:
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if ((pkeyopts == NULL &&
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(pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
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sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
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BIO_puts(bio_err, "out of memory\n");
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goto end;
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}
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break;
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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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if (kdfalg != NULL) {
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if (kdflen == 0) {
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BIO_printf(bio_err,
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"%s: no KDF length given (-kdflen parameter).\n", prog);
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goto opthelp;
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}
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} else if (inkey == NULL) {
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BIO_printf(bio_err,
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"%s: no private key given (-inkey parameter).\n", prog);
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goto opthelp;
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} else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
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BIO_printf(bio_err,
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"%s: no peer key given (-peerkey parameter).\n", prog);
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goto opthelp;
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}
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ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
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passinarg, pkey_op, e, engine_impl);
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if (ctx == NULL) {
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BIO_printf(bio_err, "%s: Error initializing context\n", prog);
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ERR_print_errors(bio_err);
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goto end;
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}
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if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
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BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
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ERR_print_errors(bio_err);
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goto end;
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}
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if (pkeyopts != NULL) {
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int num = sk_OPENSSL_STRING_num(pkeyopts);
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int i;
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for (i = 0; i < num; ++i) {
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const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
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if (pkey_ctrl_string(ctx, opt) <= 0) {
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BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
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prog, opt);
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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}
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if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
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BIO_printf(bio_err,
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"%s: Signature file specified for non verify\n", prog);
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goto end;
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}
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if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
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BIO_printf(bio_err,
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"%s: No signature file specified for verify\n", prog);
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goto end;
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}
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if (pkey_op != EVP_PKEY_OP_DERIVE) {
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in = bio_open_default(infile, 'r', FORMAT_BINARY);
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if (in == NULL)
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goto end;
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}
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out = bio_open_default(outfile, 'w', FORMAT_BINARY);
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if (out == NULL)
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goto end;
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if (sigfile != NULL) {
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BIO *sigbio = BIO_new_file(sigfile, "rb");
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if (sigbio == NULL) {
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BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
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goto end;
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}
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siglen = bio_to_mem(&sig, keysize * 10, sigbio);
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BIO_free(sigbio);
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if (siglen < 0) {
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BIO_printf(bio_err, "Error reading signature data\n");
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goto end;
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}
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}
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if (in != NULL) {
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/* Read the input data */
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buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
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if (buf_inlen < 0) {
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BIO_printf(bio_err, "Error reading input Data\n");
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goto end;
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}
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if (rev) {
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size_t i;
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unsigned char ctmp;
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size_t l = (size_t)buf_inlen;
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for (i = 0; i < l / 2; i++) {
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ctmp = buf_in[i];
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buf_in[i] = buf_in[l - 1 - i];
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buf_in[l - 1 - i] = ctmp;
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}
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}
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}
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/* Sanity check the input */
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if (buf_inlen > EVP_MAX_MD_SIZE
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&& (pkey_op == EVP_PKEY_OP_SIGN
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|| pkey_op == EVP_PKEY_OP_VERIFY
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|| pkey_op == EVP_PKEY_OP_VERIFYRECOVER)) {
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BIO_printf(bio_err,
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"Error: The input data looks too long to be a hash\n");
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goto end;
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}
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if (pkey_op == EVP_PKEY_OP_VERIFY) {
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rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
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buf_in, (size_t)buf_inlen);
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if (rv == 1) {
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BIO_puts(out, "Signature Verified Successfully\n");
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ret = 0;
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} else {
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BIO_puts(out, "Signature Verification Failure\n");
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}
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goto end;
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}
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if (kdflen != 0) {
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buf_outlen = kdflen;
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rv = 1;
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} else {
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rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
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buf_in, (size_t)buf_inlen);
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}
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if (rv > 0 && buf_outlen != 0) {
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buf_out = app_malloc(buf_outlen, "buffer output");
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rv = do_keyop(ctx, pkey_op,
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buf_out, (size_t *)&buf_outlen,
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buf_in, (size_t)buf_inlen);
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}
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if (rv <= 0) {
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if (pkey_op != EVP_PKEY_OP_DERIVE) {
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BIO_puts(bio_err, "Public Key operation error\n");
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} else {
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BIO_puts(bio_err, "Key derivation failed\n");
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}
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ERR_print_errors(bio_err);
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goto end;
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}
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ret = 0;
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if (asn1parse) {
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if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
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ERR_print_errors(bio_err);
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} else if (hexdump) {
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BIO_dump(out, (char *)buf_out, buf_outlen);
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} else {
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BIO_write(out, buf_out, buf_outlen);
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}
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end:
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EVP_PKEY_CTX_free(ctx);
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release_engine(e);
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BIO_free(in);
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BIO_free_all(out);
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OPENSSL_free(buf_in);
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OPENSSL_free(buf_out);
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OPENSSL_free(sig);
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sk_OPENSSL_STRING_free(pkeyopts);
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return ret;
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}
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static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
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const char *keyfile, int keyform, int key_type,
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char *passinarg, int pkey_op, ENGINE *e,
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const int engine_impl)
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{
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EVP_PKEY *pkey = NULL;
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EVP_PKEY_CTX *ctx = NULL;
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ENGINE *impl = NULL;
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char *passin = NULL;
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int rv = -1;
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X509 *x;
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if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
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|| (pkey_op == EVP_PKEY_OP_DERIVE))
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&& (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
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BIO_printf(bio_err, "A private key is needed for this operation\n");
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goto end;
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}
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if (!app_passwd(passinarg, NULL, &passin, NULL)) {
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BIO_printf(bio_err, "Error getting password\n");
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goto end;
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}
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switch (key_type) {
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case KEY_PRIVKEY:
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pkey = load_key(keyfile, keyform, 0, passin, e, "Private Key");
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break;
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case KEY_PUBKEY:
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pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "Public Key");
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break;
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case KEY_CERT:
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x = load_cert(keyfile, keyform, "Certificate");
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if (x) {
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pkey = X509_get_pubkey(x);
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X509_free(x);
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}
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break;
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case KEY_NONE:
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break;
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}
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#ifndef OPENSSL_NO_ENGINE
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if (engine_impl)
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impl = e;
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#endif
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if (kdfalg != NULL) {
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int kdfnid = OBJ_sn2nid(kdfalg);
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if (kdfnid == NID_undef) {
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kdfnid = OBJ_ln2nid(kdfalg);
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if (kdfnid == NID_undef) {
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BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
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kdfalg);
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goto end;
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}
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}
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ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
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} else {
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if (pkey == NULL)
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goto end;
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*pkeysize = EVP_PKEY_size(pkey);
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ctx = EVP_PKEY_CTX_new(pkey, impl);
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EVP_PKEY_free(pkey);
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}
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if (ctx == NULL)
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goto end;
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switch (pkey_op) {
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case EVP_PKEY_OP_SIGN:
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rv = EVP_PKEY_sign_init(ctx);
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break;
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case EVP_PKEY_OP_VERIFY:
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rv = EVP_PKEY_verify_init(ctx);
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break;
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case EVP_PKEY_OP_VERIFYRECOVER:
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rv = EVP_PKEY_verify_recover_init(ctx);
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break;
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case EVP_PKEY_OP_ENCRYPT:
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rv = EVP_PKEY_encrypt_init(ctx);
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break;
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case EVP_PKEY_OP_DECRYPT:
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rv = EVP_PKEY_decrypt_init(ctx);
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break;
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case EVP_PKEY_OP_DERIVE:
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rv = EVP_PKEY_derive_init(ctx);
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break;
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}
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if (rv <= 0) {
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EVP_PKEY_CTX_free(ctx);
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ctx = NULL;
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}
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end:
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OPENSSL_free(passin);
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return ctx;
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}
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static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
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ENGINE *e)
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{
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EVP_PKEY *peer = NULL;
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ENGINE *engine = NULL;
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int ret;
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if (peerform == FORMAT_ENGINE)
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engine = e;
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peer = load_pubkey(file, peerform, 0, NULL, engine, "Peer Key");
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if (peer == NULL) {
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BIO_printf(bio_err, "Error reading peer key %s\n", file);
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ERR_print_errors(bio_err);
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return 0;
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}
|
|
|
|
ret = EVP_PKEY_derive_set_peer(ctx, peer);
|
|
|
|
EVP_PKEY_free(peer);
|
|
if (ret <= 0)
|
|
ERR_print_errors(bio_err);
|
|
return ret;
|
|
}
|
|
|
|
static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
|
|
unsigned char *out, size_t *poutlen,
|
|
const unsigned char *in, size_t inlen)
|
|
{
|
|
int rv = 0;
|
|
switch (pkey_op) {
|
|
case EVP_PKEY_OP_VERIFYRECOVER:
|
|
rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
|
|
break;
|
|
|
|
case EVP_PKEY_OP_SIGN:
|
|
rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
|
|
break;
|
|
|
|
case EVP_PKEY_OP_ENCRYPT:
|
|
rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
|
|
break;
|
|
|
|
case EVP_PKEY_OP_DECRYPT:
|
|
rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
|
|
break;
|
|
|
|
case EVP_PKEY_OP_DERIVE:
|
|
rv = EVP_PKEY_derive(ctx, out, poutlen);
|
|
break;
|
|
|
|
}
|
|
return rv;
|
|
}
|