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Diffstat (limited to 'tests/fips-rsa-sizes.c')
| -rw-r--r-- | tests/fips-rsa-sizes.c | 328 |
1 files changed, 328 insertions, 0 deletions
diff --git a/tests/fips-rsa-sizes.c b/tests/fips-rsa-sizes.c new file mode 100644 index 0000000..84b9aff --- /dev/null +++ b/tests/fips-rsa-sizes.c @@ -0,0 +1,328 @@ +/* + * Copyright (C) 2022 Red Hat, Inc. + * + * Author: Alexander Sosedkin + * + * This file is part of GnuTLS. + * + * GnuTLS is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * GnuTLS is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GnuTLS; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <assert.h> +#include <stdio.h> +#include <utils.h> +#include <gnutls/gnutls.h> +#include <gnutls/abstract.h> +#include <gnutls/x509.h> + +#define FIPS_PUSH_CONTEXT() do { \ + ret = gnutls_fips140_push_context(fips_context); \ + if (ret < 0) { \ + fail("gnutls_fips140_push_context failed\n"); \ + } \ +} while (0) + +#define FIPS_POP_CONTEXT(state) do { \ + ret = gnutls_fips140_pop_context(); \ + if (ret < 0) { \ + fail("gnutls_fips140_context_pop failed\n"); \ + } \ + fips_state = gnutls_fips140_get_operation_state(fips_context); \ + if (fips_state != GNUTLS_FIPS140_OP_ ## state) { \ + fail("operation state is not " # state " (%d)\n", \ + fips_state); \ + } \ +} while (0) + + +void generate_successfully(gnutls_privkey_t* privkey, gnutls_pubkey_t* pubkey, + unsigned int size); +void generate_unsuccessfully(gnutls_privkey_t* privkey, gnutls_pubkey_t* pubkey, + unsigned int size); +void sign_verify_successfully(gnutls_privkey_t privkey, gnutls_pubkey_t pubkey); +void sign_verify_unsuccessfully(gnutls_privkey_t privkey, + gnutls_pubkey_t pubkey); +void nosign_verify(gnutls_privkey_t privkey, gnutls_pubkey_t pubkey); + + +void generate_successfully(gnutls_privkey_t* privkey, gnutls_pubkey_t* pubkey, + unsigned int size) +{ + int ret; + gnutls_x509_privkey_t xprivkey; + gnutls_fips140_context_t fips_context; + gnutls_fips140_operation_state_t fips_state; + assert(gnutls_fips140_context_init(&fips_context) == 0); + + fprintf(stderr, "%d-bit\n", size); + + /* x509 generation as well just because why not */ + FIPS_PUSH_CONTEXT(); + assert(gnutls_x509_privkey_init(&xprivkey) == 0); + ret = gnutls_x509_privkey_generate(xprivkey, GNUTLS_PK_RSA, size, 0); + if (ret != GNUTLS_E_SUCCESS) + fail("%d-bit x509_privkey_init (%d)\n", size, ret); + FIPS_POP_CONTEXT(APPROVED); + gnutls_x509_privkey_deinit(xprivkey); + + FIPS_PUSH_CONTEXT(); + assert(gnutls_privkey_init(privkey) == 0); + ret = gnutls_privkey_generate(*privkey, GNUTLS_PK_RSA, size, 0); + if (ret != GNUTLS_E_SUCCESS) + fail("%d-bit privkey_init (%d)\n", size, ret); + FIPS_POP_CONTEXT(APPROVED); + + assert(gnutls_pubkey_init(pubkey) == 0); + FIPS_PUSH_CONTEXT(); + ret = gnutls_pubkey_import_privkey(*pubkey, *privkey, + GNUTLS_KEY_DIGITAL_SIGNATURE, 0); + if (ret != GNUTLS_E_SUCCESS) + fail("%d-bit pubkey_import_privkey (%d)\n", size, ret); + FIPS_POP_CONTEXT(INITIAL); + + gnutls_fips140_context_deinit(fips_context); +} + + +void generate_unsuccessfully(gnutls_privkey_t* privkey, gnutls_pubkey_t* pubkey, + unsigned int size) +{ + int ret; + gnutls_x509_privkey_t xprivkey; + gnutls_fips140_context_t fips_context; + gnutls_fips140_operation_state_t fips_state; + assert(gnutls_fips140_context_init(&fips_context) == 0); + + fprintf(stderr, "%d-bit\n", size); + + /* short x509 generation: ERROR, blocked */ + FIPS_PUSH_CONTEXT(); + assert(gnutls_x509_privkey_init(&xprivkey) == 0); + ret = gnutls_x509_privkey_generate(xprivkey, GNUTLS_PK_RSA, size, 0); + if (ret != GNUTLS_E_PK_GENERATION_ERROR) + fail("%d-bit x509_privkey_init (%d)\n", size, ret); + FIPS_POP_CONTEXT(ERROR); + gnutls_x509_privkey_deinit(xprivkey); + + /* short key generation: ERROR, blocked */ + FIPS_PUSH_CONTEXT(); + assert(gnutls_privkey_init(privkey) == 0); + ret = gnutls_privkey_generate(*privkey, GNUTLS_PK_RSA, size, 0); + if (ret != GNUTLS_E_PK_GENERATION_ERROR) + fail("%d-bit privkey_init (%d)\n", size, ret); + FIPS_POP_CONTEXT(ERROR); + gnutls_privkey_deinit(*privkey); + + /* Disable FIPS to generate them anyway */ + gnutls_fips140_set_mode(GNUTLS_FIPS140_LAX, 0); + assert(gnutls_fips140_mode_enabled() == GNUTLS_FIPS140_LAX); + + assert(gnutls_x509_privkey_init(&xprivkey) == 0); + ret = gnutls_x509_privkey_generate(xprivkey, GNUTLS_PK_RSA, size, 0); + if (ret != GNUTLS_E_SUCCESS) + fail("%d-bit x509_privkey_init (%d)\n", size, ret); + gnutls_x509_privkey_deinit(xprivkey); + + assert(gnutls_privkey_init(privkey) == 0); + ret = gnutls_privkey_generate(*privkey, GNUTLS_PK_RSA, size, 0); + if (ret != GNUTLS_E_SUCCESS) + fail("%d-bit privkey_init (%d)\n", size, ret); + + assert(gnutls_pubkey_init(pubkey) == 0); + ret = gnutls_pubkey_import_privkey(*pubkey, *privkey, + GNUTLS_KEY_DIGITAL_SIGNATURE, 0); + if (ret != GNUTLS_E_SUCCESS) + fail("%d-bit pubkey_import_privkey (%d)\n", size, ret); + + gnutls_fips140_set_mode(GNUTLS_FIPS140_STRICT, 0); + assert(gnutls_fips140_mode_enabled()); + + gnutls_fips140_context_deinit(fips_context); +} + + +void sign_verify_successfully(gnutls_privkey_t privkey, gnutls_pubkey_t pubkey) { + int ret; + gnutls_fips140_context_t fips_context; + gnutls_fips140_operation_state_t fips_state; + + gnutls_datum_t signature; + gnutls_datum_t plaintext = { + .data = (unsigned char* const) "Hello world!", + .size = 12 + }; + assert(gnutls_fips140_context_init(&fips_context) == 0); + + /* RSA sign: approved */ + FIPS_PUSH_CONTEXT(); + ret = gnutls_privkey_sign_data(privkey, GNUTLS_DIG_SHA256, 0, + &plaintext, &signature); + if (ret < 0) + fail("gnutls_privkey_sign_data failed\n"); + FIPS_POP_CONTEXT(APPROVED); + + /* RSA verify: approved */ + FIPS_PUSH_CONTEXT(); + ret = gnutls_pubkey_verify_data2(pubkey, GNUTLS_SIGN_RSA_SHA256, 0, + &plaintext, &signature); + if (ret < 0) + fail("gnutls_pubkey_verify_data2 failed\n"); + FIPS_POP_CONTEXT(APPROVED); + + gnutls_free(signature.data); + gnutls_fips140_context_deinit(fips_context); +} + + +void sign_verify_unsuccessfully(gnutls_privkey_t privkey, + gnutls_pubkey_t pubkey) { + int ret; + gnutls_fips140_context_t fips_context; + gnutls_fips140_operation_state_t fips_state; + + gnutls_datum_t signature; + gnutls_datum_t plaintext = { + .data = (unsigned char* const) "Hello world!", + .size = 12 + }; + assert(gnutls_fips140_context_init(&fips_context) == 0); + + /* small key RSA sign: not approved */ + FIPS_PUSH_CONTEXT(); + ret = gnutls_privkey_sign_data(privkey, GNUTLS_DIG_SHA256, 0, + &plaintext, &signature); + if (ret < 0) + fail("gnutls_privkey_sign_data failed\n"); + FIPS_POP_CONTEXT(NOT_APPROVED); + + /* small key RSA verify: not approved */ + FIPS_PUSH_CONTEXT(); + ret = gnutls_pubkey_verify_data2(pubkey, GNUTLS_SIGN_RSA_SHA256, 0, + &plaintext, &signature); + if (ret < 0) + fail("gnutls_pubkey_verify_data2 failed\n"); + FIPS_POP_CONTEXT(NOT_APPROVED); + + gnutls_free(signature.data); + gnutls_pubkey_deinit(pubkey); + gnutls_privkey_deinit(privkey); + gnutls_fips140_context_deinit(fips_context); +} + + +void nosign_verify(gnutls_privkey_t privkey, gnutls_pubkey_t pubkey) { + int ret; + gnutls_fips140_context_t fips_context; + gnutls_fips140_operation_state_t fips_state; + + gnutls_datum_t signature; + gnutls_datum_t plaintext = { + .data = (unsigned char* const) "Hello world!", + .size = 12 + }; + assert(gnutls_fips140_context_init(&fips_context) == 0); + + /* 1024, 1280, 1536, 1792 key RSA sign: not approved */ + FIPS_PUSH_CONTEXT(); + ret = gnutls_privkey_sign_data(privkey, GNUTLS_DIG_SHA256, 0, + &plaintext, &signature); + if (ret < 0) + fail("gnutls_privkey_sign_data failed\n"); + FIPS_POP_CONTEXT(NOT_APPROVED); + + /* Disable FIPS to sign them anyway */ + gnutls_fips140_set_mode(GNUTLS_FIPS140_LAX, 0); + assert(gnutls_fips140_mode_enabled() == GNUTLS_FIPS140_LAX); + + ret = gnutls_privkey_sign_data(privkey, GNUTLS_DIG_SHA256, 0, + &plaintext, &signature); + if (ret < 0) + fail("gnutls_privkey_sign_data failed\n"); + + gnutls_fips140_set_mode(GNUTLS_FIPS140_STRICT, 0); + assert(gnutls_fips140_mode_enabled()); + + /* 1024, 1280, 1536, 1792 key RSA verify: approved (exception) */ + FIPS_PUSH_CONTEXT(); + ret = gnutls_pubkey_verify_data2(pubkey, GNUTLS_SIGN_RSA_SHA256, 0, + &plaintext, &signature); + if (ret < 0) + fail("gnutls_pubkey_verify_data2 failed\n"); + FIPS_POP_CONTEXT(APPROVED); + + gnutls_free(signature.data); + gnutls_pubkey_deinit(pubkey); + gnutls_privkey_deinit(privkey); + gnutls_fips140_context_deinit(fips_context); +} + + +void doit(void) +{ + gnutls_fips140_context_t fips_context; + gnutls_privkey_t privkey; + gnutls_pubkey_t pubkey; + + if (gnutls_fips140_mode_enabled() == 0) { + success("We are not in FIPS140 mode\n"); + exit(77); /* SKIP */ + } + + assert(gnutls_fips140_context_init(&fips_context) == 0); + + /* 512-bit RSA: no generate, no sign, no verify */ + generate_unsuccessfully(&privkey, &pubkey, 512); + sign_verify_unsuccessfully(privkey, pubkey); + /* 512-bit RSA again (to be safer about going in and out of FIPS) */ + generate_unsuccessfully(&privkey, &pubkey, 512); + sign_verify_unsuccessfully(privkey, pubkey); + /* 600-bit RSA: no generate, no sign, no verify */ + generate_unsuccessfully(&privkey, &pubkey, 600); + sign_verify_unsuccessfully(privkey, pubkey); + + /* 768-bit RSA not-an-exception: nogenerate, nosign, verify */ + generate_unsuccessfully(&privkey, &pubkey, 768); + sign_verify_unsuccessfully(privkey, pubkey); + /* 1024-bit RSA exception: nogenerate, nosign, verify */ + generate_unsuccessfully(&privkey, &pubkey, 1024); + nosign_verify(privkey, pubkey); + /* 1280-bit RSA exception: nogenerate, nosign, verify */ + generate_unsuccessfully(&privkey, &pubkey, 1280); + nosign_verify(privkey, pubkey); + /* 1500-bit RSA not-an-exception: nogenerate, nosign, noverify */ + generate_unsuccessfully(&privkey, &pubkey, 1500); + sign_verify_unsuccessfully(privkey, pubkey); + /* 1536-bit RSA exception: nogenerate, nosign, verify */ + generate_unsuccessfully(&privkey, &pubkey, 1536); + nosign_verify(privkey, pubkey); + /* 1792-bit RSA exception: nogenerate, nosign, verify */ + generate_unsuccessfully(&privkey, &pubkey, 1792); + nosign_verify(privkey, pubkey); + /* 2000-bit RSA not-an-exception: nogenerate, nosign, noverify */ + generate_unsuccessfully(&privkey, &pubkey, 2000); + sign_verify_unsuccessfully(privkey, pubkey); + + /* 2048-bit RSA: generate, sign, verify */ + generate_successfully(&privkey, &pubkey, 2048); + sign_verify_successfully(privkey, pubkey); + /* 2432-bit RSA: nogenerate, sign, verify */ + generate_unsuccessfully(&privkey, &pubkey, 2432); + sign_verify_successfully(privkey, pubkey); + /* 3072-bit RSA: generate, sign, verify */ + generate_successfully(&privkey, &pubkey, 3072); + sign_verify_successfully(privkey, pubkey); + + gnutls_fips140_context_deinit(fips_context); +} |