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