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Support of en/decapsulation in the pkeyutl command

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Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
Reviewed-by: Paul Dale <ppzgs1@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/25127)
This commit is contained in:
Dmitry Belyavskiy 2024-08-07 17:17:18 +02:00
parent 38a7183102
commit 12b2e5552b
1 changed files with 69 additions and 14 deletions
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83
apps/pkeyutl.c
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@ -24,7 +24,7 @@ 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, int rawin, EVP_PKEY **ppkey,
EVP_MD_CTX *mctx, const char *digestname,
EVP_MD_CTX *mctx, const char *digestname, const char *kemop,
OSSL_LIB_CTX *libctx, const char *propq);
static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
@ -32,7 +32,8 @@ static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
unsigned char *out, size_t *poutlen,
const unsigned char *in, size_t inlen);
const unsigned char *in, size_t inlen,
unsigned char *secret, size_t *psecretlen);
static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
EVP_PKEY *pkey, BIO *in,
@ -47,6 +48,7 @@ typedef enum OPTION_choice {
OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_PKEYOPT_PASSIN, OPT_KDF,
OPT_KDFLEN, OPT_R_ENUM, OPT_PROV_ENUM,
OPT_DECAP, OPT_ENCAP, OPT_SECOUT, OPT_KEMOP,
OPT_CONFIG,
OPT_RAWIN, OPT_DIGEST
} OPTION_CHOICE;
@ -64,6 +66,8 @@ const OPTIONS pkeyutl_options[] = {
{"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
{"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
{"derive", OPT_DERIVE, '-', "Derive shared secret"},
{"decap", OPT_DECAP, '-', "Decapsulate shared secret"},
{"encap", OPT_ENCAP, '-', "Encapsulate shared secret"},
OPT_CONFIG_OPTION,
OPT_SECTION("Input"),
@ -81,12 +85,13 @@ const OPTIONS pkeyutl_options[] = {
OPT_SECTION("Output"),
{"out", OPT_OUT, '>', "Output file - default stdout"},
{"secret", OPT_SECOUT, '>', "File to store secret on encapsulation"},
{"asn1parse", OPT_ASN1PARSE, '-', "asn1parse the output data"},
{"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
{"verifyrecover", OPT_VERIFYRECOVER, '-',
"Verify with public key, recover original data"},
OPT_SECTION("Signing/Derivation"),
OPT_SECTION("Signing/Derivation/Encapsulation"),
{"digest", OPT_DIGEST, 's',
"Specify the digest algorithm when signing the raw input data"},
{"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
@ -94,6 +99,7 @@ const OPTIONS pkeyutl_options[] = {
"Public key option that is read as a passphrase argument opt:passphrase"},
{"kdf", OPT_KDF, 's', "Use KDF algorithm"},
{"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
{"kemop", OPT_KEMOP, 's', "KEM operation specific to the key algorithm"},
OPT_R_OPTIONS,
OPT_PROV_OPTIONS,
@ -103,23 +109,23 @@ const OPTIONS pkeyutl_options[] = {
int pkeyutl_main(int argc, char **argv)
{
CONF *conf = NULL;
BIO *in = NULL, *out = NULL;
BIO *in = NULL, *out = NULL, *secout = NULL;
ENGINE *e = NULL;
EVP_PKEY_CTX *ctx = NULL;
EVP_PKEY *pkey = NULL;
char *infile = NULL, *outfile = NULL, *sigfile = NULL, *passinarg = NULL;
char *infile = NULL, *outfile = NULL, *secoutfile = NULL, *sigfile = NULL, *passinarg = NULL;
char hexdump = 0, asn1parse = 0, rev = 0, *prog;
unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL, *secret = NULL;
OPTION_CHOICE o;
int buf_inlen = 0, siglen = -1;
int keyform = FORMAT_UNDEF, peerform = FORMAT_UNDEF;
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;
size_t buf_outlen = 0, secretlen = 0;
const char *inkey = NULL;
const char *peerkey = NULL;
const char *kdfalg = NULL, *digestname = NULL;
const char *kdfalg = NULL, *digestname = NULL, *kemop = NULL;
int kdflen = 0;
STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
STACK_OF(OPENSSL_STRING) *pkeyopts_passin = NULL;
@ -147,6 +153,9 @@ int pkeyutl_main(int argc, char **argv)
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_SECOUT:
secoutfile = opt_arg();
break;
case OPT_SIGFILE:
sigfile = opt_arg();
break;
@ -216,6 +225,15 @@ int pkeyutl_main(int argc, char **argv)
case OPT_DERIVE:
pkey_op = EVP_PKEY_OP_DERIVE;
break;
case OPT_DECAP:
pkey_op = EVP_PKEY_OP_DECAPSULATE;
break;
case OPT_ENCAP:
pkey_op = EVP_PKEY_OP_ENCAPSULATE;
break;
case OPT_KEMOP:
kemop = opt_arg();
break;
case OPT_KDF:
pkey_op = EVP_PKEY_OP_DERIVE;
key_type = KEY_NONE;
@ -303,7 +321,7 @@ int pkeyutl_main(int argc, char **argv)
}
ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
passinarg, pkey_op, e, engine_impl, rawin, &pkey,
mctx, digestname, libctx, app_get0_propq());
mctx, digestname, kemop, libctx, app_get0_propq());
if (ctx == NULL) {
BIO_printf(bio_err, "%s: Error initializing context\n", prog);
goto end;
@ -387,7 +405,7 @@ int pkeyutl_main(int argc, char **argv)
goto end;
}
if (pkey_op != EVP_PKEY_OP_DERIVE) {
if (pkey_op != EVP_PKEY_OP_DERIVE && pkey_op != EVP_PKEY_OP_ENCAPSULATE) {
in = bio_open_default(infile, 'r', FORMAT_BINARY);
if (infile != NULL) {
struct stat st;
@ -402,6 +420,16 @@ int pkeyutl_main(int argc, char **argv)
if (out == NULL)
goto end;
if (pkey_op == EVP_PKEY_OP_ENCAPSULATE) {
if (secoutfile == NULL) {
BIO_printf(bio_err, "Encapsulation requires '-secret' argument\n");
goto end;
}
secout = bio_open_default(secoutfile, 'w', FORMAT_BINARY);
if (secout == NULL)
goto end;
}
if (sigfile != NULL) {
BIO *sigbio = BIO_new_file(sigfile, "rb");
@ -473,13 +501,15 @@ int pkeyutl_main(int argc, char **argv)
rv = 1;
} else {
rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
buf_in, (size_t)buf_inlen);
buf_in, (size_t)buf_inlen, NULL, (size_t *)&secretlen);
}
if (rv > 0 && buf_outlen != 0) {
buf_out = app_malloc(buf_outlen, "buffer output");
if (secretlen > 0)
secret = app_malloc(secretlen, "secret output");
rv = do_keyop(ctx, pkey_op,
buf_out, (size_t *)&buf_outlen,
buf_in, (size_t)buf_inlen);
buf_in, (size_t)buf_inlen, secret, (size_t *)&secretlen);
}
}
if (rv <= 0) {
@ -500,6 +530,8 @@ int pkeyutl_main(int argc, char **argv)
} else {
BIO_write(out, buf_out, buf_outlen);
}
if (secretlen > 0)
BIO_write(secout, secret, secretlen);
end:
if (ret != 0)
@ -510,9 +542,11 @@ int pkeyutl_main(int argc, char **argv)
release_engine(e);
BIO_free(in);
BIO_free_all(out);
BIO_free_all(secout);
OPENSSL_free(buf_in);
OPENSSL_free(buf_out);
OPENSSL_free(sig);
OPENSSL_free(secret);
sk_OPENSSL_STRING_free(pkeyopts);
sk_OPENSSL_STRING_free(pkeyopts_passin);
NCONF_free(conf);
@ -524,7 +558,7 @@ static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
char *passinarg, int pkey_op, ENGINE *e,
const int engine_impl, int rawin,
EVP_PKEY **ppkey, EVP_MD_CTX *mctx, const char *digestname,
OSSL_LIB_CTX *libctx, const char *propq)
const char *kemop, OSSL_LIB_CTX *libctx, const char *propq)
{
EVP_PKEY *pkey = NULL;
EVP_PKEY_CTX *ctx = NULL;
@ -642,6 +676,18 @@ static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
case EVP_PKEY_OP_DERIVE:
rv = EVP_PKEY_derive_init(ctx);
break;
case EVP_PKEY_OP_ENCAPSULATE:
rv = EVP_PKEY_encapsulate_init(ctx, NULL);
if (rv > 0 && kemop != NULL)
rv = EVP_PKEY_CTX_set_kem_op(ctx, kemop);
break;
case EVP_PKEY_OP_DECAPSULATE:
rv = EVP_PKEY_decapsulate_init(ctx, NULL);
if (rv > 0 && kemop != NULL)
rv = EVP_PKEY_CTX_set_kem_op(ctx, kemop);
break;
}
}
@ -679,7 +725,8 @@ static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
unsigned char *out, size_t *poutlen,
const unsigned char *in, size_t inlen)
const unsigned char *in, size_t inlen,
unsigned char *secret, size_t *pseclen)
{
int rv = 0;
switch (pkey_op) {
@ -703,6 +750,14 @@ static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
rv = EVP_PKEY_derive(ctx, out, poutlen);
break;
case EVP_PKEY_OP_ENCAPSULATE:
rv = EVP_PKEY_encapsulate(ctx, out, poutlen, secret, pseclen);
break;
case EVP_PKEY_OP_DECAPSULATE:
rv = EVP_PKEY_decapsulate(ctx, out, poutlen, in, inlen);
break;
}
return rv;
}