/* * Copyright 2022 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 #include #include #include #include "testutil.h" /* a size to use for stack buffers */ #define OSSL_HPKE_TSTSIZE 512 static OSSL_LIB_CTX *testctx = NULL; static OSSL_PROVIDER *nullprov = NULL; static OSSL_PROVIDER *deflprov = NULL; static char *testpropq = "provider=default"; static int verbose = 0; typedef struct { int mode; OSSL_HPKE_SUITE suite; const unsigned char *ikmE; size_t ikmElen; const unsigned char *expected_pkEm; size_t expected_pkEmlen; const unsigned char *ikmR; size_t ikmRlen; const unsigned char *expected_pkRm; size_t expected_pkRmlen; const unsigned char *expected_skRm; size_t expected_skRmlen; const unsigned char *expected_secret; size_t expected_secretlen; const unsigned char *ksinfo; size_t ksinfolen; const unsigned char *ikmAuth; size_t ikmAuthlen; const unsigned char *psk; size_t psklen; const char *pskid; /* want terminating NUL here */ } TEST_BASEDATA; typedef struct { int seq; const unsigned char *pt; size_t ptlen; const unsigned char *aad; size_t aadlen; const unsigned char *expected_ct; size_t expected_ctlen; } TEST_AEADDATA; typedef struct { const unsigned char *context; size_t contextlen; const unsigned char *expected_secret; size_t expected_secretlen; } TEST_EXPORTDATA; /** * @brief Test that an EVP_PKEY encoded public key matches the supplied buffer * @param pkey is the EVP_PKEY we want to check * @param pub is the expected public key buffer * @param publen is the length of the above * @return 1 for good, 0 for bad */ static int cmpkey(const EVP_PKEY *pkey, const unsigned char *pub, size_t publen) { unsigned char pubbuf[256]; size_t pubbuflen = 0; int erv = 0; if (!TEST_true(publen <= sizeof(pubbuf))) return 0; erv = EVP_PKEY_get_octet_string_param(pkey, OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY, pubbuf, sizeof(pubbuf), &pubbuflen); if (!TEST_true(erv)) return 0; if (pub != NULL && !TEST_mem_eq(pubbuf, pubbuflen, pub, publen)) return 0; return 1; } static int do_testhpke(const TEST_BASEDATA *base, const TEST_AEADDATA *aead, size_t aeadsz, const TEST_EXPORTDATA *export, size_t exportsz) { OSSL_LIB_CTX *libctx = testctx; const char *propq = testpropq; OSSL_HPKE_CTX *sealctx = NULL, *openctx = NULL; unsigned char ct[256]; unsigned char enc[256]; unsigned char ptout[256]; size_t ptoutlen = sizeof(ptout); size_t enclen = sizeof(enc); size_t ctlen = sizeof(ct); unsigned char pub[OSSL_HPKE_TSTSIZE]; size_t publen = sizeof(pub); EVP_PKEY *privE = NULL; unsigned char authpub[OSSL_HPKE_TSTSIZE]; size_t authpublen = sizeof(authpub); EVP_PKEY *authpriv = NULL; unsigned char rpub[OSSL_HPKE_TSTSIZE]; size_t rpublen = sizeof(pub); EVP_PKEY *privR = NULL; int ret = 0; size_t i; uint64_t lastseq = 0; if (!TEST_true(OSSL_HPKE_keygen(base->suite, pub, &publen, &privE, base->ikmE, base->ikmElen, libctx, propq))) goto end; if (!TEST_true(cmpkey(privE, base->expected_pkEm, base->expected_pkEmlen))) goto end; if (!TEST_ptr(sealctx = OSSL_HPKE_CTX_new(base->mode, base->suite, OSSL_HPKE_ROLE_SENDER, libctx, propq))) goto end; if (!TEST_true(OSSL_HPKE_CTX_set1_ikme(sealctx, base->ikmE, base->ikmElen))) goto end; if (base->mode == OSSL_HPKE_MODE_AUTH || base->mode == OSSL_HPKE_MODE_PSKAUTH) { if (!TEST_true(base->ikmAuth != NULL && base->ikmAuthlen > 0)) goto end; if (!TEST_true(OSSL_HPKE_keygen(base->suite, authpub, &authpublen, &authpriv, base->ikmAuth, base->ikmAuthlen, libctx, propq))) goto end; if (!TEST_true(OSSL_HPKE_CTX_set1_authpriv(sealctx, authpriv))) goto end; } if (!TEST_true(OSSL_HPKE_keygen(base->suite, rpub, &rpublen, &privR, base->ikmR, base->ikmRlen, libctx, propq))) goto end; if (!TEST_true(cmpkey(privR, base->expected_pkRm, base->expected_pkRmlen))) goto end; if (base->mode == OSSL_HPKE_MODE_PSK || base->mode == OSSL_HPKE_MODE_PSKAUTH) { if (!TEST_true(OSSL_HPKE_CTX_set1_psk(sealctx, base->pskid, base->psk, base->psklen))) goto end; } if (!TEST_true(OSSL_HPKE_encap(sealctx, enc, &enclen, rpub, rpublen, base->ksinfo, base->ksinfolen))) goto end; if (!TEST_true(cmpkey(privE, enc, enclen))) goto end; for (i = 0; i < aeadsz; ++i) { ctlen = sizeof(ct); memset(ct, 0, ctlen); if (!TEST_true(OSSL_HPKE_seal(sealctx, ct, &ctlen, aead[i].aad, aead[i].aadlen, aead[i].pt, aead[i].ptlen))) goto end; if (!TEST_mem_eq(ct, ctlen, aead[i].expected_ct, aead[i].expected_ctlen)) goto end; if (!TEST_true(OSSL_HPKE_CTX_get_seq(sealctx, &lastseq))) goto end; if (lastseq != (uint64_t)(i + 1)) goto end; } if (!TEST_ptr(openctx = OSSL_HPKE_CTX_new(base->mode, base->suite, OSSL_HPKE_ROLE_RECEIVER, libctx, propq))) goto end; if (base->mode == OSSL_HPKE_MODE_PSK || base->mode == OSSL_HPKE_MODE_PSKAUTH) { if (!TEST_true(base->pskid != NULL && base->psk != NULL && base->psklen > 0)) goto end; if (!TEST_true(OSSL_HPKE_CTX_set1_psk(openctx, base->pskid, base->psk, base->psklen))) goto end; } if (base->mode == OSSL_HPKE_MODE_AUTH || base->mode == OSSL_HPKE_MODE_PSKAUTH) { if (!TEST_true(OSSL_HPKE_CTX_set1_authpub(openctx, authpub, authpublen))) goto end; } if (!TEST_true(OSSL_HPKE_decap(openctx, enc, enclen, privR, base->ksinfo, base->ksinfolen))) goto end; for (i = 0; i < aeadsz; ++i) { ptoutlen = sizeof(ptout); memset(ptout, 0, ptoutlen); if (!TEST_true(OSSL_HPKE_open(openctx, ptout, &ptoutlen, aead[i].aad, aead[i].aadlen, aead[i].expected_ct, aead[i].expected_ctlen))) goto end; if (!TEST_mem_eq(aead[i].pt, aead[i].ptlen, ptout, ptoutlen)) goto end; /* check the sequence is being incremented as expected */ if (!TEST_true(OSSL_HPKE_CTX_get_seq(openctx, &lastseq))) goto end; if (lastseq != (uint64_t)(i + 1)) goto end; } /* check exporters */ for (i = 0; i < exportsz; ++i) { size_t len = export[i].expected_secretlen; unsigned char eval[OSSL_HPKE_TSTSIZE]; if (len > sizeof(eval)) goto end; /* export with too long label should fail */ if (!TEST_false(OSSL_HPKE_export(sealctx, eval, len, export[i].context, -1))) goto end; /* good export call */ if (!TEST_true(OSSL_HPKE_export(sealctx, eval, len, export[i].context, export[i].contextlen))) goto end; if (!TEST_mem_eq(eval, len, export[i].expected_secret, export[i].expected_secretlen)) goto end; /* check seal fails if export only mode */ if (aeadsz == 0) { if (!TEST_false(OSSL_HPKE_seal(sealctx, ct, &ctlen, NULL, 0, ptout, ptoutlen))) goto end; } } ret = 1; end: OSSL_HPKE_CTX_free(sealctx); OSSL_HPKE_CTX_free(openctx); EVP_PKEY_free(privE); EVP_PKEY_free(privR); EVP_PKEY_free(authpriv); return ret; } static const unsigned char pt[] = { 0x42, 0x65, 0x61, 0x75, 0x74, 0x79, 0x20, 0x69, 0x73, 0x20, 0x74, 0x72, 0x75, 0x74, 0x68, 0x2c, 0x20, 0x74, 0x72, 0x75, 0x74, 0x68, 0x20, 0x62, 0x65, 0x61, 0x75, 0x74, 0x79 }; static const unsigned char ksinfo[] = { 0x4f, 0x64, 0x65, 0x20, 0x6f, 0x6e, 0x20, 0x61, 0x20, 0x47, 0x72, 0x65, 0x63, 0x69, 0x61, 0x6e, 0x20, 0x55, 0x72, 0x6e }; #ifndef OPENSSL_NO_ECX /* * static const char *pskid = "Ennyn Durin aran Moria"; */ static const unsigned char pskid[] = { 0x45, 0x6e, 0x6e, 0x79, 0x6e, 0x20, 0x44, 0x75, 0x72, 0x69, 0x6e, 0x20, 0x61, 0x72, 0x61, 0x6e, 0x20, 0x4d, 0x6f, 0x72, 0x69, 0x61, 0x00 }; static const unsigned char psk[] = { 0x02, 0x47, 0xfd, 0x33, 0xb9, 0x13, 0x76, 0x0f, 0xa1, 0xfa, 0x51, 0xe1, 0x89, 0x2d, 0x9f, 0x30, 0x7f, 0xbe, 0x65, 0xeb, 0x17, 0x1e, 0x81, 0x32, 0xc2, 0xaf, 0x18, 0x55, 0x5a, 0x73, 0x8b, 0x82 }; /* these need to be "outside" the function below to keep check-ansi CI happy */ static const unsigned char first_ikme[] = { 0x78, 0x62, 0x8c, 0x35, 0x4e, 0x46, 0xf3, 0xe1, 0x69, 0xbd, 0x23, 0x1b, 0xe7, 0xb2, 0xff, 0x1c, 0x77, 0xaa, 0x30, 0x24, 0x60, 0xa2, 0x6d, 0xbf, 0xa1, 0x55, 0x15, 0x68, 0x4c, 0x00, 0x13, 0x0b }; static const unsigned char first_ikmr[] = { 0xd4, 0xa0, 0x9d, 0x09, 0xf5, 0x75, 0xfe, 0xf4, 0x25, 0x90, 0x5d, 0x2a, 0xb3, 0x96, 0xc1, 0x44, 0x91, 0x41, 0x46, 0x3f, 0x69, 0x8f, 0x8e, 0xfd, 0xb7, 0xac, 0xcf, 0xaf, 0xf8, 0x99, 0x50, 0x98 }; static const unsigned char first_ikmepub[] = { 0x0a, 0xd0, 0x95, 0x0d, 0x9f, 0xb9, 0x58, 0x8e, 0x59, 0x69, 0x0b, 0x74, 0xf1, 0x23, 0x7e, 0xcd, 0xf1, 0xd7, 0x75, 0xcd, 0x60, 0xbe, 0x2e, 0xca, 0x57, 0xaf, 0x5a, 0x4b, 0x04, 0x71, 0xc9, 0x1b, }; static const unsigned char first_ikmrpub[] = { 0x9f, 0xed, 0x7e, 0x8c, 0x17, 0x38, 0x75, 0x60, 0xe9, 0x2c, 0xc6, 0x46, 0x2a, 0x68, 0x04, 0x96, 0x57, 0x24, 0x6a, 0x09, 0xbf, 0xa8, 0xad, 0xe7, 0xae, 0xfe, 0x58, 0x96, 0x72, 0x01, 0x63, 0x66 }; static const unsigned char first_ikmrpriv[] = { 0xc5, 0xeb, 0x01, 0xeb, 0x45, 0x7f, 0xe6, 0xc6, 0xf5, 0x75, 0x77, 0xc5, 0x41, 0x3b, 0x93, 0x15, 0x50, 0xa1, 0x62, 0xc7, 0x1a, 0x03, 0xac, 0x8d, 0x19, 0x6b, 0xab, 0xbd, 0x4e, 0x5c, 0xe0, 0xfd }; static const unsigned char first_expected_shared_secret[] = { 0x72, 0x76, 0x99, 0xf0, 0x09, 0xff, 0xe3, 0xc0, 0x76, 0x31, 0x50, 0x19, 0xc6, 0x96, 0x48, 0x36, 0x6b, 0x69, 0x17, 0x14, 0x39, 0xbd, 0x7d, 0xd0, 0x80, 0x77, 0x43, 0xbd, 0xe7, 0x69, 0x86, 0xcd }; static const unsigned char first_aad0[] = { 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x2d, 0x30 }; static const unsigned char first_ct0[] = { 0xe5, 0x2c, 0x6f, 0xed, 0x7f, 0x75, 0x8d, 0x0c, 0xf7, 0x14, 0x56, 0x89, 0xf2, 0x1b, 0xc1, 0xbe, 0x6e, 0xc9, 0xea, 0x09, 0x7f, 0xef, 0x4e, 0x95, 0x94, 0x40, 0x01, 0x2f, 0x4f, 0xeb, 0x73, 0xfb, 0x61, 0x1b, 0x94, 0x61, 0x99, 0xe6, 0x81, 0xf4, 0xcf, 0xc3, 0x4d, 0xb8, 0xea }; static const unsigned char first_aad1[] = { 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x2d, 0x31 }; static const unsigned char first_ct1[] = { 0x49, 0xf3, 0xb1, 0x9b, 0x28, 0xa9, 0xea, 0x9f, 0x43, 0xe8, 0xc7, 0x12, 0x04, 0xc0, 0x0d, 0x4a, 0x49, 0x0e, 0xe7, 0xf6, 0x13, 0x87, 0xb6, 0x71, 0x9d, 0xb7, 0x65, 0xe9, 0x48, 0x12, 0x3b, 0x45, 0xb6, 0x16, 0x33, 0xef, 0x05, 0x9b, 0xa2, 0x2c, 0xd6, 0x24, 0x37, 0xc8, 0xba }; static const unsigned char first_aad2[] = { 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x2d, 0x32 }; static const unsigned char first_ct2[] = { 0x25, 0x7c, 0xa6, 0xa0, 0x84, 0x73, 0xdc, 0x85, 0x1f, 0xde, 0x45, 0xaf, 0xd5, 0x98, 0xcc, 0x83, 0xe3, 0x26, 0xdd, 0xd0, 0xab, 0xe1, 0xef, 0x23, 0xba, 0xa3, 0xba, 0xa4, 0xdd, 0x8c, 0xde, 0x99, 0xfc, 0xe2, 0xc1, 0xe8, 0xce, 0x68, 0x7b, 0x0b, 0x47, 0xea, 0xd1, 0xad, 0xc9 }; static const unsigned char first_export1[] = { 0xdf, 0xf1, 0x7a, 0xf3, 0x54, 0xc8, 0xb4, 0x16, 0x73, 0x56, 0x7d, 0xb6, 0x25, 0x9f, 0xd6, 0x02, 0x99, 0x67, 0xb4, 0xe1, 0xaa, 0xd1, 0x30, 0x23, 0xc2, 0xae, 0x5d, 0xf8, 0xf4, 0xf4, 0x3b, 0xf6 }; static const unsigned char first_context2[] = { 0x00 }; static const unsigned char first_export2[] = { 0x6a, 0x84, 0x72, 0x61, 0xd8, 0x20, 0x7f, 0xe5, 0x96, 0xbe, 0xfb, 0x52, 0x92, 0x84, 0x63, 0x88, 0x1a, 0xb4, 0x93, 0xda, 0x34, 0x5b, 0x10, 0xe1, 0xdc, 0xc6, 0x45, 0xe3, 0xb9, 0x4e, 0x2d, 0x95 }; static const unsigned char first_context3[] = { 0x54, 0x65, 0x73, 0x74, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x78, 0x74 }; static const unsigned char first_export3[] = { 0x8a, 0xff, 0x52, 0xb4, 0x5a, 0x1b, 0xe3, 0xa7, 0x34, 0xbc, 0x7a, 0x41, 0xe2, 0x0b, 0x4e, 0x05, 0x5a, 0xd4, 0xc4, 0xd2, 0x21, 0x04, 0xb0, 0xc2, 0x02, 0x85, 0xa7, 0xc4, 0x30, 0x24, 0x01, 0xcd }; static int x25519kdfsha256_hkdfsha256_aes128gcm_psk_test(void) { const TEST_BASEDATA pskdata = { /* "X25519", NULL, "SHA256", "SHA256", "AES-128-GCM", */ OSSL_HPKE_MODE_PSK, { OSSL_HPKE_KEM_ID_X25519, OSSL_HPKE_KDF_ID_HKDF_SHA256, OSSL_HPKE_AEAD_ID_AES_GCM_128 }, first_ikme, sizeof(first_ikme), first_ikmepub, sizeof(first_ikmepub), first_ikmr, sizeof(first_ikmr), first_ikmrpub, sizeof(first_ikmrpub), first_ikmrpriv, sizeof(first_ikmrpriv), first_expected_shared_secret, sizeof(first_expected_shared_secret), ksinfo, sizeof(ksinfo), NULL, 0, /* No Auth */ psk, sizeof(psk), (char *) pskid }; const TEST_AEADDATA aeaddata[] = { { 0, pt, sizeof(pt), first_aad0, sizeof(first_aad0), first_ct0, sizeof(first_ct0) }, { 1, pt, sizeof(pt), first_aad1, sizeof(first_aad1), first_ct1, sizeof(first_ct1) }, { 2, pt, sizeof(pt), first_aad2, sizeof(first_aad2), first_ct2, sizeof(first_ct2) } }; const TEST_EXPORTDATA exportdata[] = { { NULL, 0, first_export1, sizeof(first_export1) }, { first_context2, sizeof(first_context2), first_export2, sizeof(first_export2) }, { first_context3, sizeof(first_context3), first_export3, sizeof(first_export3) }, }; return do_testhpke(&pskdata, aeaddata, OSSL_NELEM(aeaddata), exportdata, OSSL_NELEM(exportdata)); } static const unsigned char second_ikme[] = { 0x72, 0x68, 0x60, 0x0d, 0x40, 0x3f, 0xce, 0x43, 0x15, 0x61, 0xae, 0xf5, 0x83, 0xee, 0x16, 0x13, 0x52, 0x7c, 0xff, 0x65, 0x5c, 0x13, 0x43, 0xf2, 0x98, 0x12, 0xe6, 0x67, 0x06, 0xdf, 0x32, 0x34 }; static const unsigned char second_ikmepub[] = { 0x37, 0xfd, 0xa3, 0x56, 0x7b, 0xdb, 0xd6, 0x28, 0xe8, 0x86, 0x68, 0xc3, 0xc8, 0xd7, 0xe9, 0x7d, 0x1d, 0x12, 0x53, 0xb6, 0xd4, 0xea, 0x6d, 0x44, 0xc1, 0x50, 0xf7, 0x41, 0xf1, 0xbf, 0x44, 0x31, }; static const unsigned char second_ikmr[] = { 0x6d, 0xb9, 0xdf, 0x30, 0xaa, 0x07, 0xdd, 0x42, 0xee, 0x5e, 0x81, 0x81, 0xaf, 0xdb, 0x97, 0x7e, 0x53, 0x8f, 0x5e, 0x1f, 0xec, 0x8a, 0x06, 0x22, 0x3f, 0x33, 0xf7, 0x01, 0x3e, 0x52, 0x50, 0x37 }; static const unsigned char second_ikmrpub[] = { 0x39, 0x48, 0xcf, 0xe0, 0xad, 0x1d, 0xdb, 0x69, 0x5d, 0x78, 0x0e, 0x59, 0x07, 0x71, 0x95, 0xda, 0x6c, 0x56, 0x50, 0x6b, 0x02, 0x73, 0x29, 0x79, 0x4a, 0xb0, 0x2b, 0xca, 0x80, 0x81, 0x5c, 0x4d }; static const unsigned char second_ikmrpriv[] = { 0x46, 0x12, 0xc5, 0x50, 0x26, 0x3f, 0xc8, 0xad, 0x58, 0x37, 0x5d, 0xf3, 0xf5, 0x57, 0xaa, 0xc5, 0x31, 0xd2, 0x68, 0x50, 0x90, 0x3e, 0x55, 0xa9, 0xf2, 0x3f, 0x21, 0xd8, 0x53, 0x4e, 0x8a, 0xc8 }; static const unsigned char second_expected_shared_secret[] = { 0xfe, 0x0e, 0x18, 0xc9, 0xf0, 0x24, 0xce, 0x43, 0x79, 0x9a, 0xe3, 0x93, 0xc7, 0xe8, 0xfe, 0x8f, 0xce, 0x9d, 0x21, 0x88, 0x75, 0xe8, 0x22, 0x7b, 0x01, 0x87, 0xc0, 0x4e, 0x7d, 0x2e, 0xa1, 0xfc }; static const unsigned char second_aead0[] = { 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x2d, 0x30 }; static const unsigned char second_ct0[] = { 0xf9, 0x38, 0x55, 0x8b, 0x5d, 0x72, 0xf1, 0xa2, 0x38, 0x10, 0xb4, 0xbe, 0x2a, 0xb4, 0xf8, 0x43, 0x31, 0xac, 0xc0, 0x2f, 0xc9, 0x7b, 0xab, 0xc5, 0x3a, 0x52, 0xae, 0x82, 0x18, 0xa3, 0x55, 0xa9, 0x6d, 0x87, 0x70, 0xac, 0x83, 0xd0, 0x7b, 0xea, 0x87, 0xe1, 0x3c, 0x51, 0x2a }; static const unsigned char second_aead1[] = { 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x2d, 0x31 }; static const unsigned char second_ct1[] = { 0xaf, 0x2d, 0x7e, 0x9a, 0xc9, 0xae, 0x7e, 0x27, 0x0f, 0x46, 0xba, 0x1f, 0x97, 0x5b, 0xe5, 0x3c, 0x09, 0xf8, 0xd8, 0x75, 0xbd, 0xc8, 0x53, 0x54, 0x58, 0xc2, 0x49, 0x4e, 0x8a, 0x6e, 0xab, 0x25, 0x1c, 0x03, 0xd0, 0xc2, 0x2a, 0x56, 0xb8, 0xca, 0x42, 0xc2, 0x06, 0x3b, 0x84 }; static const unsigned char second_export1[] = { 0x38, 0x53, 0xfe, 0x2b, 0x40, 0x35, 0x19, 0x5a, 0x57, 0x3f, 0xfc, 0x53, 0x85, 0x6e, 0x77, 0x05, 0x8e, 0x15, 0xd9, 0xea, 0x06, 0x4d, 0xe3, 0xe5, 0x9f, 0x49, 0x61, 0xd0, 0x09, 0x52, 0x50, 0xee }; static const unsigned char second_context2[] = { 0x00 }; static const unsigned char second_export2[] = { 0x2e, 0x8f, 0x0b, 0x54, 0x67, 0x3c, 0x70, 0x29, 0x64, 0x9d, 0x4e, 0xb9, 0xd5, 0xe3, 0x3b, 0xf1, 0x87, 0x2c, 0xf7, 0x6d, 0x62, 0x3f, 0xf1, 0x64, 0xac, 0x18, 0x5d, 0xa9, 0xe8, 0x8c, 0x21, 0xa5 }; static const unsigned char second_context3[] = { 0x54, 0x65, 0x73, 0x74, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x78, 0x74 }; static const unsigned char second_export3[] = { 0xe9, 0xe4, 0x30, 0x65, 0x10, 0x2c, 0x38, 0x36, 0x40, 0x1b, 0xed, 0x8c, 0x3c, 0x3c, 0x75, 0xae, 0x46, 0xbe, 0x16, 0x39, 0x86, 0x93, 0x91, 0xd6, 0x2c, 0x61, 0xf1, 0xec, 0x7a, 0xf5, 0x49, 0x31 }; static int x25519kdfsha256_hkdfsha256_aes128gcm_base_test(void) { const TEST_BASEDATA basedata = { OSSL_HPKE_MODE_BASE, { OSSL_HPKE_KEM_ID_X25519, OSSL_HPKE_KDF_ID_HKDF_SHA256, OSSL_HPKE_AEAD_ID_AES_GCM_128 }, second_ikme, sizeof(second_ikme), second_ikmepub, sizeof(second_ikmepub), second_ikmr, sizeof(second_ikmr), second_ikmrpub, sizeof(second_ikmrpub), second_ikmrpriv, sizeof(second_ikmrpriv), second_expected_shared_secret, sizeof(second_expected_shared_secret), ksinfo, sizeof(ksinfo), NULL, 0, /* no auth ikm */ NULL, 0, NULL /* no psk */ }; const TEST_AEADDATA aeaddata[] = { { 0, pt, sizeof(pt), second_aead0, sizeof(second_aead0), second_ct0, sizeof(second_ct0) }, { 1, pt, sizeof(pt), second_aead1, sizeof(second_aead1), second_ct1, sizeof(second_ct1) } }; const TEST_EXPORTDATA exportdata[] = { { NULL, 0, second_export1, sizeof(second_export1) }, { second_context2, sizeof(second_context2), second_export2, sizeof(second_export2) }, { second_context3, sizeof(second_context3), second_export3, sizeof(second_export3) }, }; return do_testhpke(&basedata, aeaddata, OSSL_NELEM(aeaddata), exportdata, OSSL_NELEM(exportdata)); } #endif static const unsigned char third_ikme[] = { 0x42, 0x70, 0xe5, 0x4f, 0xfd, 0x08, 0xd7, 0x9d, 0x59, 0x28, 0x02, 0x0a, 0xf4, 0x68, 0x6d, 0x8f, 0x6b, 0x7d, 0x35, 0xdb, 0xe4, 0x70, 0x26, 0x5f, 0x1f, 0x5a, 0xa2, 0x28, 0x16, 0xce, 0x86, 0x0e }; static const unsigned char third_ikmepub[] = { 0x04, 0xa9, 0x27, 0x19, 0xc6, 0x19, 0x5d, 0x50, 0x85, 0x10, 0x4f, 0x46, 0x9a, 0x8b, 0x98, 0x14, 0xd5, 0x83, 0x8f, 0xf7, 0x2b, 0x60, 0x50, 0x1e, 0x2c, 0x44, 0x66, 0xe5, 0xe6, 0x7b, 0x32, 0x5a, 0xc9, 0x85, 0x36, 0xd7, 0xb6, 0x1a, 0x1a, 0xf4, 0xb7, 0x8e, 0x5b, 0x7f, 0x95, 0x1c, 0x09, 0x00, 0xbe, 0x86, 0x3c, 0x40, 0x3c, 0xe6, 0x5c, 0x9b, 0xfc, 0xb9, 0x38, 0x26, 0x57, 0x22, 0x2d, 0x18, 0xc4, }; static const unsigned char third_ikmr[] = { 0x66, 0x8b, 0x37, 0x17, 0x1f, 0x10, 0x72, 0xf3, 0xcf, 0x12, 0xea, 0x8a, 0x23, 0x6a, 0x45, 0xdf, 0x23, 0xfc, 0x13, 0xb8, 0x2a, 0xf3, 0x60, 0x9a, 0xd1, 0xe3, 0x54, 0xf6, 0xef, 0x81, 0x75, 0x50 }; static const unsigned char third_ikmrpub[] = { 0x04, 0xfe, 0x8c, 0x19, 0xce, 0x09, 0x05, 0x19, 0x1e, 0xbc, 0x29, 0x8a, 0x92, 0x45, 0x79, 0x25, 0x31, 0xf2, 0x6f, 0x0c, 0xec, 0xe2, 0x46, 0x06, 0x39, 0xe8, 0xbc, 0x39, 0xcb, 0x7f, 0x70, 0x6a, 0x82, 0x6a, 0x77, 0x9b, 0x4c, 0xf9, 0x69, 0xb8, 0xa0, 0xe5, 0x39, 0xc7, 0xf6, 0x2f, 0xb3, 0xd3, 0x0a, 0xd6, 0xaa, 0x8f, 0x80, 0xe3, 0x0f, 0x1d, 0x12, 0x8a, 0xaf, 0xd6, 0x8a, 0x2c, 0xe7, 0x2e, 0xa0 }; static const unsigned char third_ikmrpriv[] = { 0xf3, 0xce, 0x7f, 0xda, 0xe5, 0x7e, 0x1a, 0x31, 0x0d, 0x87, 0xf1, 0xeb, 0xbd, 0xe6, 0xf3, 0x28, 0xbe, 0x0a, 0x99, 0xcd, 0xbc, 0xad, 0xf4, 0xd6, 0x58, 0x9c, 0xf2, 0x9d, 0xe4, 0xb8, 0xff, 0xd2 }; static const unsigned char third_expected_shared_secret[] = { 0xc0, 0xd2, 0x6a, 0xea, 0xb5, 0x36, 0x60, 0x9a, 0x57, 0x2b, 0x07, 0x69, 0x5d, 0x93, 0x3b, 0x58, 0x9d, 0xcf, 0x36, 0x3f, 0xf9, 0xd9, 0x3c, 0x93, 0xad, 0xea, 0x53, 0x7a, 0xea, 0xbb, 0x8c, 0xb8 }; static const unsigned char third_aead0[] = { 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x2d, 0x30 }; static const unsigned char third_ct0[] = { 0x5a, 0xd5, 0x90, 0xbb, 0x8b, 0xaa, 0x57, 0x7f, 0x86, 0x19, 0xdb, 0x35, 0xa3, 0x63, 0x11, 0x22, 0x6a, 0x89, 0x6e, 0x73, 0x42, 0xa6, 0xd8, 0x36, 0xd8, 0xb7, 0xbc, 0xd2, 0xf2, 0x0b, 0x6c, 0x7f, 0x90, 0x76, 0xac, 0x23, 0x2e, 0x3a, 0xb2, 0x52, 0x3f, 0x39, 0x51, 0x34, 0x34 }; static const unsigned char third_aead1[] = { 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x2d, 0x31 }; static const unsigned char third_ct1[] = { 0xfa, 0x6f, 0x03, 0x7b, 0x47, 0xfc, 0x21, 0x82, 0x6b, 0x61, 0x01, 0x72, 0xca, 0x96, 0x37, 0xe8, 0x2d, 0x6e, 0x58, 0x01, 0xeb, 0x31, 0xcb, 0xd3, 0x74, 0x82, 0x71, 0xaf, 0xfd, 0x4e, 0xcb, 0x06, 0x64, 0x6e, 0x03, 0x29, 0xcb, 0xdf, 0x3c, 0x3c, 0xd6, 0x55, 0xb2, 0x8e, 0x82 }; static const unsigned char third_export1[] = { 0x5e, 0x9b, 0xc3, 0xd2, 0x36, 0xe1, 0x91, 0x1d, 0x95, 0xe6, 0x5b, 0x57, 0x6a, 0x8a, 0x86, 0xd4, 0x78, 0xfb, 0x82, 0x7e, 0x8b, 0xdf, 0xe7, 0x7b, 0x74, 0x1b, 0x28, 0x98, 0x90, 0x49, 0x0d, 0x4d }; static const unsigned char third_context2[] = { 0x00 }; static const unsigned char third_export2[] = { 0x6c, 0xff, 0x87, 0x65, 0x89, 0x31, 0xbd, 0xa8, 0x3d, 0xc8, 0x57, 0xe6, 0x35, 0x3e, 0xfe, 0x49, 0x87, 0xa2, 0x01, 0xb8, 0x49, 0x65, 0x8d, 0x9b, 0x04, 0x7a, 0xab, 0x4c, 0xf2, 0x16, 0xe7, 0x96 }; static const unsigned char third_context3[] = { 0x54, 0x65, 0x73, 0x74, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x78, 0x74 }; static const unsigned char third_export3[] = { 0xd8, 0xf1, 0xea, 0x79, 0x42, 0xad, 0xbb, 0xa7, 0x41, 0x2c, 0x6d, 0x43, 0x1c, 0x62, 0xd0, 0x13, 0x71, 0xea, 0x47, 0x6b, 0x82, 0x3e, 0xb6, 0x97, 0xe1, 0xf6, 0xe6, 0xca, 0xe1, 0xda, 0xb8, 0x5a }; static int P256kdfsha256_hkdfsha256_aes128gcm_base_test(void) { const TEST_BASEDATA basedata = { OSSL_HPKE_MODE_BASE, { OSSL_HPKE_KEM_ID_P256, OSSL_HPKE_KDF_ID_HKDF_SHA256, OSSL_HPKE_AEAD_ID_AES_GCM_128 }, third_ikme, sizeof(third_ikme), third_ikmepub, sizeof(third_ikmepub), third_ikmr, sizeof(third_ikmr), third_ikmrpub, sizeof(third_ikmrpub), third_ikmrpriv, sizeof(third_ikmrpriv), third_expected_shared_secret, sizeof(third_expected_shared_secret), ksinfo, sizeof(ksinfo), NULL, 0, /* no auth */ NULL, 0, NULL /* PSK stuff */ }; const TEST_AEADDATA aeaddata[] = { { 0, pt, sizeof(pt), third_aead0, sizeof(third_aead0), third_ct0, sizeof(third_ct0) }, { 1, pt, sizeof(pt), third_aead1, sizeof(third_aead1), third_ct1, sizeof(third_ct1) } }; const TEST_EXPORTDATA exportdata[] = { { NULL, 0, third_export1, sizeof(third_export1) }, { third_context2, sizeof(third_context2), third_export2, sizeof(third_export2) }, { third_context3, sizeof(third_context3), third_export3, sizeof(third_export3) }, }; return do_testhpke(&basedata, aeaddata, OSSL_NELEM(aeaddata), exportdata, OSSL_NELEM(exportdata)); } #ifndef OPENSSL_NO_ECX static const unsigned char fourth_ikme[] = { 0x55, 0xbc, 0x24, 0x5e, 0xe4, 0xef, 0xda, 0x25, 0xd3, 0x8f, 0x2d, 0x54, 0xd5, 0xbb, 0x66, 0x65, 0x29, 0x1b, 0x99, 0xf8, 0x10, 0x8a, 0x8c, 0x4b, 0x68, 0x6c, 0x2b, 0x14, 0x89, 0x3e, 0xa5, 0xd9 }; static const unsigned char fourth_ikmepub[] = { 0xe5, 0xe8, 0xf9, 0xbf, 0xff, 0x6c, 0x2f, 0x29, 0x79, 0x1f, 0xc3, 0x51, 0xd2, 0xc2, 0x5c, 0xe1, 0x29, 0x9a, 0xa5, 0xea, 0xca, 0x78, 0xa7, 0x57, 0xc0, 0xb4, 0xfb, 0x4b, 0xcd, 0x83, 0x09, 0x18 }; static const unsigned char fourth_ikmr[] = { 0x68, 0x3a, 0xe0, 0xda, 0x1d, 0x22, 0x18, 0x1e, 0x74, 0xed, 0x2e, 0x50, 0x3e, 0xbf, 0x82, 0x84, 0x0d, 0xeb, 0x1d, 0x5e, 0x87, 0x2c, 0xad, 0xe2, 0x0f, 0x4b, 0x45, 0x8d, 0x99, 0x78, 0x3e, 0x31 }; static const unsigned char fourth_ikmrpub[] = { 0x19, 0x41, 0x41, 0xca, 0x6c, 0x3c, 0x3b, 0xeb, 0x47, 0x92, 0xcd, 0x97, 0xba, 0x0e, 0xa1, 0xfa, 0xff, 0x09, 0xd9, 0x84, 0x35, 0x01, 0x23, 0x45, 0x76, 0x6e, 0xe3, 0x3a, 0xae, 0x2d, 0x76, 0x64 }; static const unsigned char fourth_ikmrpriv[] = { 0x33, 0xd1, 0x96, 0xc8, 0x30, 0xa1, 0x2f, 0x9a, 0xc6, 0x5d, 0x6e, 0x56, 0x5a, 0x59, 0x0d, 0x80, 0xf0, 0x4e, 0xe9, 0xb1, 0x9c, 0x83, 0xc8, 0x7f, 0x2c, 0x17, 0x0d, 0x97, 0x2a, 0x81, 0x28, 0x48 }; static const unsigned char fourth_expected_shared_secret[] = { 0xe8, 0x17, 0x16, 0xce, 0x8f, 0x73, 0x14, 0x1d, 0x4f, 0x25, 0xee, 0x90, 0x98, 0xef, 0xc9, 0x68, 0xc9, 0x1e, 0x5b, 0x8c, 0xe5, 0x2f, 0xff, 0xf5, 0x9d, 0x64, 0x03, 0x9e, 0x82, 0x91, 0x8b, 0x66 }; static const unsigned char fourth_export1[] = { 0x7a, 0x36, 0x22, 0x1b, 0xd5, 0x6d, 0x50, 0xfb, 0x51, 0xee, 0x65, 0xed, 0xfd, 0x98, 0xd0, 0x6a, 0x23, 0xc4, 0xdc, 0x87, 0x08, 0x5a, 0xa5, 0x86, 0x6c, 0xb7, 0x08, 0x72, 0x44, 0xbd, 0x2a, 0x36 }; static const unsigned char fourth_context2[] = { 0x00 }; static const unsigned char fourth_export2[] = { 0xd5, 0x53, 0x5b, 0x87, 0x09, 0x9c, 0x6c, 0x3c, 0xe8, 0x0d, 0xc1, 0x12, 0xa2, 0x67, 0x1c, 0x6e, 0xc8, 0xe8, 0x11, 0xa2, 0xf2, 0x84, 0xf9, 0x48, 0xce, 0xc6, 0xdd, 0x17, 0x08, 0xee, 0x33, 0xf0 }; static const unsigned char fourth_context3[] = { 0x54, 0x65, 0x73, 0x74, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x78, 0x74 }; static const unsigned char fourth_export3[] = { 0xff, 0xaa, 0xbc, 0x85, 0xa7, 0x76, 0x13, 0x6c, 0xa0, 0xc3, 0x78, 0xe5, 0xd0, 0x84, 0xc9, 0x14, 0x0a, 0xb5, 0x52, 0xb7, 0x8f, 0x03, 0x9d, 0x2e, 0x87, 0x75, 0xf2, 0x6e, 0xff, 0xf4, 0xc7, 0x0e }; static int export_only_test(void) { /* based on RFC9180 A.7 */ const TEST_BASEDATA basedata = { OSSL_HPKE_MODE_BASE, { OSSL_HPKE_KEM_ID_X25519, OSSL_HPKE_KDF_ID_HKDF_SHA256, OSSL_HPKE_AEAD_ID_EXPORTONLY }, fourth_ikme, sizeof(fourth_ikme), fourth_ikmepub, sizeof(fourth_ikmepub), fourth_ikmr, sizeof(fourth_ikmr), fourth_ikmrpub, sizeof(fourth_ikmrpub), fourth_ikmrpriv, sizeof(fourth_ikmrpriv), fourth_expected_shared_secret, sizeof(fourth_expected_shared_secret), ksinfo, sizeof(ksinfo), NULL, 0, /* no auth */ NULL, 0, NULL /* PSK stuff */ }; const TEST_EXPORTDATA exportdata[] = { { NULL, 0, fourth_export1, sizeof(fourth_export1) }, { fourth_context2, sizeof(fourth_context2), fourth_export2, sizeof(fourth_export2) }, { fourth_context3, sizeof(fourth_context3), fourth_export3, sizeof(fourth_export3) }, }; return do_testhpke(&basedata, NULL, 0, exportdata, OSSL_NELEM(exportdata)); } #endif /* * Randomly toss a coin */ #define COIN_IS_HEADS (test_random() % 2) /* tables of HPKE modes and suite values */ static int hpke_mode_list[] = { OSSL_HPKE_MODE_BASE, OSSL_HPKE_MODE_PSK, OSSL_HPKE_MODE_AUTH, OSSL_HPKE_MODE_PSKAUTH }; static uint16_t hpke_kem_list[] = { OSSL_HPKE_KEM_ID_P256, OSSL_HPKE_KEM_ID_P384, OSSL_HPKE_KEM_ID_P521, #ifndef OPENSSL_NO_ECX OSSL_HPKE_KEM_ID_X25519, OSSL_HPKE_KEM_ID_X448 #endif }; static uint16_t hpke_kdf_list[] = { OSSL_HPKE_KDF_ID_HKDF_SHA256, OSSL_HPKE_KDF_ID_HKDF_SHA384, OSSL_HPKE_KDF_ID_HKDF_SHA512 }; static uint16_t hpke_aead_list[] = { OSSL_HPKE_AEAD_ID_AES_GCM_128, OSSL_HPKE_AEAD_ID_AES_GCM_256, #if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305) OSSL_HPKE_AEAD_ID_CHACHA_POLY1305 #endif }; /* * Strings that can be used with names or IANA codepoints. * Note that the initial entries from these lists should * match the lists above, i.e. kem_str_list[0] and * hpke_kem_list[0] should refer to the same KEM. We use * that for verbose output via TEST_note() below. * Subsequent entries are only used for tests of * OSSL_HPKE_str2suite() */ static const char *mode_str_list[] = { "base", "psk", "auth", "pskauth" }; static const char *kem_str_list[] = { #ifndef OPENSSL_NO_ECX "P-256", "P-384", "P-521", "x25519", "x448", "0x10", "0x11", "0x12", "0x20", "0x21", "16", "17", "18", "32", "33" #else "P-256", "P-384", "P-521", "0x10", "0x11", "0x12", "16", "17", "18" #endif }; static const char *kdf_str_list[] = { "hkdf-sha256", "hkdf-sha384", "hkdf-sha512", "0x1", "0x01", "0x2", "0x02", "0x3", "0x03", "1", "2", "3" }; static const char *aead_str_list[] = { "aes-128-gcm", "aes-256-gcm", "chacha20-poly1305", "exporter", "0x1", "0x01", "0x2", "0x02", "0x3", "0x03", "1", "2", "3", "0xff", "255" }; /* table of bogus strings that better not work */ static const char *bogus_suite_strs[] = { "3,33,3", "bogus,bogus,bogus", "bogus,33,3,1,bogus", "bogus,33,3,1", "bogus,bogus", "bogus", /* one bad token */ "0x10,0x01,bogus", "0x10,bogus,0x01", "bogus,0x02,0x01", /* in reverse order */ "aes-256-gcm,hkdf-sha512,x25519", /* surplus separators */ ",,0x10,0x01,0x02", "0x10,,0x01,0x02", "0x10,0x01,,0x02", /* embedded NUL chars */ "0x10,\00x01,,0x02", "0x10,\0""0x01,0x02", "0x10\0,0x01,0x02", "0x10,0x01\0,0x02", "0x10,0x01,\0""0x02", /* embedded whitespace */ " aes-256-gcm,hkdf-sha512,x25519", "aes-256-gcm, hkdf-sha512,x25519", "aes-256-gcm ,hkdf-sha512,x25519", "aes-256-gcm,hkdf-sha512, x25519", "aes-256-gcm,hkdf-sha512 ,x25519", "aes-256-gcm,hkdf-sha512,x25519 ", /* good value followed by extra stuff */ "0x10,0x01,0x02,", "0x10,0x01,0x02,,,", "0x10,0x01,0x01,0x02", "0x10,0x01,0x01,blah", "0x10,0x01,0x01 0x02", /* too few but good tokens */ "0x10,0x01", "0x10", /* empty things */ NULL, "", ",", ",," }; /** * @brief round-trips, generating keys, encrypt and decrypt * * This iterates over all mode and ciphersuite options trying * a key gen, encrypt and decrypt for each. The aad, info, and * seq inputs are randomly set or omitted each time. EVP and * non-EVP key generation are randomly selected. * * @return 1 for success, other otherwise */ static int test_hpke_modes_suites(void) { int overallresult = 1; size_t mind = 0; /* index into hpke_mode_list */ size_t kemind = 0; /* index into hpke_kem_list */ size_t kdfind = 0; /* index into hpke_kdf_list */ size_t aeadind = 0; /* index into hpke_aead_list */ /* iterate over the different modes */ for (mind = 0; mind < OSSL_NELEM(hpke_mode_list); mind++) { int hpke_mode = hpke_mode_list[mind]; size_t aadlen = OSSL_HPKE_TSTSIZE; unsigned char aad[OSSL_HPKE_TSTSIZE]; unsigned char *aadp = NULL; size_t infolen = 32; unsigned char info[32]; unsigned char *infop = NULL; unsigned char lpsk[32]; unsigned char *pskp = NULL; char lpskid[32]; size_t psklen = 32; char *pskidp = NULL; EVP_PKEY *privp = NULL; OSSL_HPKE_SUITE hpke_suite = OSSL_HPKE_SUITE_DEFAULT; size_t plainlen = OSSL_HPKE_TSTSIZE; unsigned char plain[OSSL_HPKE_TSTSIZE]; OSSL_HPKE_CTX *rctx = NULL; OSSL_HPKE_CTX *ctx = NULL; memset(plain, 0x00, OSSL_HPKE_TSTSIZE); strcpy((char *)plain, "a message not in a bottle"); plainlen = strlen((char *)plain); /* * Randomly try with/without info, aad, seq. Given mode and suite * combos, and this being run even a few times, we'll exercise many * code paths fairly quickly. We don't really care what the values * are but it'll be easier to debug if they're known, so we set 'em. */ if (COIN_IS_HEADS) { aadp = aad; memset(aad, 'a', aadlen); } else { aadlen = 0; } if (COIN_IS_HEADS) { infop = info; memset(info, 'i', infolen); } else { infolen = 0; } if (hpke_mode == OSSL_HPKE_MODE_PSK || hpke_mode == OSSL_HPKE_MODE_PSKAUTH) { pskp = lpsk; memset(lpsk, 'P', psklen); pskidp = lpskid; memset(lpskid, 'I', psklen - 1); lpskid[psklen - 1] = '\0'; } else { psklen = 0; } for (kemind = 0; /* iterate over the kems, kdfs and aeads */ overallresult == 1 && kemind < OSSL_NELEM(hpke_kem_list); kemind++) { uint16_t kem_id = hpke_kem_list[kemind]; size_t authpublen = OSSL_HPKE_TSTSIZE; unsigned char authpub[OSSL_HPKE_TSTSIZE]; unsigned char *authpubp = NULL; EVP_PKEY *authpriv = NULL; hpke_suite.kem_id = kem_id; if (hpke_mode == OSSL_HPKE_MODE_AUTH || hpke_mode == OSSL_HPKE_MODE_PSKAUTH) { if (TEST_true(OSSL_HPKE_keygen(hpke_suite, authpub, &authpublen, &authpriv, NULL, 0, testctx, NULL)) != 1) { overallresult = 0; } authpubp = authpub; } else { authpublen = 0; } for (kdfind = 0; overallresult == 1 && kdfind < OSSL_NELEM(hpke_kdf_list); kdfind++) { uint16_t kdf_id = hpke_kdf_list[kdfind]; hpke_suite.kdf_id = kdf_id; for (aeadind = 0; overallresult == 1 && aeadind < OSSL_NELEM(hpke_aead_list); aeadind++) { uint16_t aead_id = hpke_aead_list[aeadind]; size_t publen = OSSL_HPKE_TSTSIZE; unsigned char pub[OSSL_HPKE_TSTSIZE]; size_t senderpublen = OSSL_HPKE_TSTSIZE; unsigned char senderpub[OSSL_HPKE_TSTSIZE]; size_t cipherlen = OSSL_HPKE_TSTSIZE; unsigned char cipher[OSSL_HPKE_TSTSIZE]; size_t clearlen = OSSL_HPKE_TSTSIZE; unsigned char clear[OSSL_HPKE_TSTSIZE]; hpke_suite.aead_id = aead_id; if (!TEST_true(OSSL_HPKE_keygen(hpke_suite, pub, &publen, &privp, NULL, 0, testctx, NULL))) overallresult = 0; if (!TEST_ptr(ctx = OSSL_HPKE_CTX_new(hpke_mode, hpke_suite, OSSL_HPKE_ROLE_SENDER, testctx, NULL))) overallresult = 0; if (hpke_mode == OSSL_HPKE_MODE_PSK || hpke_mode == OSSL_HPKE_MODE_PSKAUTH) { if (!TEST_true(OSSL_HPKE_CTX_set1_psk(ctx, pskidp, pskp, psklen))) overallresult = 0; } if (hpke_mode == OSSL_HPKE_MODE_AUTH || hpke_mode == OSSL_HPKE_MODE_PSKAUTH) { if (!TEST_true(OSSL_HPKE_CTX_set1_authpriv(ctx, authpriv))) overallresult = 0; } if (!TEST_true(OSSL_HPKE_encap(ctx, senderpub, &senderpublen, pub, publen, infop, infolen))) overallresult = 0; /* throw in a call with a too-short cipherlen */ cipherlen = 15; if (!TEST_false(OSSL_HPKE_seal(ctx, cipher, &cipherlen, aadp, aadlen, plain, plainlen))) overallresult = 0; /* fix back real cipherlen */ cipherlen = OSSL_HPKE_TSTSIZE; if (!TEST_true(OSSL_HPKE_seal(ctx, cipher, &cipherlen, aadp, aadlen, plain, plainlen))) overallresult = 0; OSSL_HPKE_CTX_free(ctx); memset(clear, 0, clearlen); rctx = OSSL_HPKE_CTX_new(hpke_mode, hpke_suite, OSSL_HPKE_ROLE_RECEIVER, testctx, NULL); if (!TEST_ptr(rctx)) overallresult = 0; if (hpke_mode == OSSL_HPKE_MODE_PSK || hpke_mode == OSSL_HPKE_MODE_PSKAUTH) { if (!TEST_true(OSSL_HPKE_CTX_set1_psk(rctx, pskidp, pskp, psklen))) overallresult = 0; } if (hpke_mode == OSSL_HPKE_MODE_AUTH || hpke_mode == OSSL_HPKE_MODE_PSKAUTH) { /* check a borked p256 key */ if (hpke_suite.kem_id == OSSL_HPKE_KEM_ID_P256) { /* set to fail decode of authpub this time */ if (!TEST_false(OSSL_HPKE_CTX_set1_authpub(rctx, authpub, 10 ))) overallresult = 0; } if (!TEST_true(OSSL_HPKE_CTX_set1_authpub(rctx, authpubp, authpublen))) overallresult = 0; } if (!TEST_true(OSSL_HPKE_decap(rctx, senderpub, senderpublen, privp, infop, infolen))) overallresult = 0; /* throw in a call with a too-short clearlen */ clearlen = 15; if (!TEST_false(OSSL_HPKE_open(rctx, clear, &clearlen, aadp, aadlen, cipher, cipherlen))) overallresult = 0; /* fix up real clearlen again */ clearlen = OSSL_HPKE_TSTSIZE; if (!TEST_true(OSSL_HPKE_open(rctx, clear, &clearlen, aadp, aadlen, cipher, cipherlen))) overallresult = 0; OSSL_HPKE_CTX_free(rctx); EVP_PKEY_free(privp); privp = NULL; /* check output */ if (!TEST_mem_eq(clear, clearlen, plain, plainlen)) { overallresult = 0; } if (verbose || overallresult != 1) { const char *res = NULL; res = (overallresult == 1 ? "worked" : "failed"); TEST_note("HPKE %s for mode: %s/0x%02x, "\ "kem: %s/0x%02x, kdf: %s/0x%02x, "\ "aead: %s/0x%02x", res, mode_str_list[mind], (int) mind, kem_str_list[kemind], kem_id, kdf_str_list[kdfind], kdf_id, aead_str_list[aeadind], aead_id); } } } EVP_PKEY_free(authpriv); } } return overallresult; } /** * @brief check roundtrip for export * @return 1 for success, other otherwise */ static int test_hpke_export(void) { int erv = 0; EVP_PKEY *privp = NULL; unsigned char pub[OSSL_HPKE_TSTSIZE]; size_t publen = sizeof(pub); int hpke_mode = OSSL_HPKE_MODE_BASE; OSSL_HPKE_SUITE hpke_suite = OSSL_HPKE_SUITE_DEFAULT; OSSL_HPKE_CTX *ctx = NULL; OSSL_HPKE_CTX *rctx = NULL; unsigned char exp[32]; unsigned char exp2[32]; unsigned char rexp[32]; unsigned char rexp2[32]; unsigned char plain[] = "quick brown fox"; size_t plainlen = sizeof(plain); unsigned char enc[OSSL_HPKE_TSTSIZE]; size_t enclen = sizeof(enc); unsigned char cipher[OSSL_HPKE_TSTSIZE]; size_t cipherlen = sizeof(cipher); unsigned char clear[OSSL_HPKE_TSTSIZE]; size_t clearlen = sizeof(clear); char *estr = "foo"; if (!TEST_true(OSSL_HPKE_keygen(hpke_suite, pub, &publen, &privp, NULL, 0, testctx, NULL))) goto end; if (!TEST_ptr(ctx = OSSL_HPKE_CTX_new(hpke_mode, hpke_suite, OSSL_HPKE_ROLE_SENDER, testctx, NULL))) goto end; /* a few error cases 1st */ if (!TEST_false(OSSL_HPKE_export(NULL, exp, sizeof(exp), (unsigned char *)estr, strlen(estr)))) goto end; /* ctx before encap should fail too */ if (!TEST_false(OSSL_HPKE_export(ctx, exp, sizeof(exp), (unsigned char *)estr, strlen(estr)))) goto end; if (!TEST_true(OSSL_HPKE_encap(ctx, enc, &enclen, pub, publen, NULL, 0))) goto end; if (!TEST_true(OSSL_HPKE_seal(ctx, cipher, &cipherlen, NULL, 0, plain, plainlen))) goto end; /* now for real */ if (!TEST_true(OSSL_HPKE_export(ctx, exp, sizeof(exp), (unsigned char *)estr, strlen(estr)))) goto end; /* check a 2nd call with same input gives same output */ if (!TEST_true(OSSL_HPKE_export(ctx, exp2, sizeof(exp2), (unsigned char *)estr, strlen(estr)))) goto end; if (!TEST_mem_eq(exp, sizeof(exp), exp2, sizeof(exp2))) goto end; if (!TEST_ptr(rctx = OSSL_HPKE_CTX_new(hpke_mode, hpke_suite, OSSL_HPKE_ROLE_RECEIVER, testctx, NULL))) goto end; if (!TEST_true(OSSL_HPKE_decap(rctx, enc, enclen, privp, NULL, 0))) goto end; if (!TEST_true(OSSL_HPKE_open(rctx, clear, &clearlen, NULL, 0, cipher, cipherlen))) goto end; if (!TEST_true(OSSL_HPKE_export(rctx, rexp, sizeof(rexp), (unsigned char *)estr, strlen(estr)))) goto end; /* check a 2nd call with same input gives same output */ if (!TEST_true(OSSL_HPKE_export(rctx, rexp2, sizeof(rexp2), (unsigned char *)estr, strlen(estr)))) goto end; if (!TEST_mem_eq(rexp, sizeof(rexp), rexp2, sizeof(rexp2))) goto end; if (!TEST_mem_eq(exp, sizeof(exp), rexp, sizeof(rexp))) goto end; erv = 1; end: OSSL_HPKE_CTX_free(ctx); OSSL_HPKE_CTX_free(rctx); EVP_PKEY_free(privp); return erv; } /** * @brief Check mapping from strings to HPKE suites * @return 1 for success, other otherwise */ static int test_hpke_suite_strs(void) { int overallresult = 1; int kemind = 0; int kdfind = 0; int aeadind = 0; int sind = 0; char sstr[128]; OSSL_HPKE_SUITE stirred; char giant[2048]; for (kemind = 0; kemind != OSSL_NELEM(kem_str_list); kemind++) { for (kdfind = 0; kdfind != OSSL_NELEM(kdf_str_list); kdfind++) { for (aeadind = 0; aeadind != OSSL_NELEM(aead_str_list); aeadind++) { BIO_snprintf(sstr, 128, "%s,%s,%s", kem_str_list[kemind], kdf_str_list[kdfind], aead_str_list[aeadind]); if (TEST_true(OSSL_HPKE_str2suite(sstr, &stirred)) != 1) { if (verbose) TEST_note("Unexpected str2suite fail for :%s", bogus_suite_strs[sind]); overallresult = 0; } } } } for (sind = 0; sind != OSSL_NELEM(bogus_suite_strs); sind++) { if (TEST_false(OSSL_HPKE_str2suite(bogus_suite_strs[sind], &stirred)) != 1) { if (verbose) TEST_note("OSSL_HPKE_str2suite didn't fail for bogus[%d]:%s", sind, bogus_suite_strs[sind]); overallresult = 0; } } /* check a few errors */ if (!TEST_false(OSSL_HPKE_str2suite("", &stirred))) overallresult = 0; if (!TEST_false(OSSL_HPKE_str2suite(NULL, &stirred))) overallresult = 0; if (!TEST_false(OSSL_HPKE_str2suite("", NULL))) overallresult = 0; memset(giant, 'A', sizeof(giant) - 1); giant[sizeof(giant) - 1] = '\0'; if (!TEST_false(OSSL_HPKE_str2suite(giant, &stirred))) overallresult = 0; return overallresult; } /** * @brief try the various GREASEy APIs * @return 1 for success, other otherwise */ static int test_hpke_grease(void) { int overallresult = 1; OSSL_HPKE_SUITE g_suite; unsigned char g_pub[OSSL_HPKE_TSTSIZE]; size_t g_pub_len = OSSL_HPKE_TSTSIZE; unsigned char g_cipher[OSSL_HPKE_TSTSIZE]; size_t g_cipher_len = 266; size_t clearlen = 128; size_t expanded = 0; size_t enclen = 0; size_t ikmelen = 0; memset(&g_suite, 0, sizeof(OSSL_HPKE_SUITE)); /* GREASEing */ /* check too short for public value */ g_pub_len = 10; if (TEST_false(OSSL_HPKE_get_grease_value(NULL, &g_suite, g_pub, &g_pub_len, g_cipher, g_cipher_len, testctx, NULL)) != 1) { overallresult = 0; } /* reset to work */ g_pub_len = OSSL_HPKE_TSTSIZE; if (TEST_true(OSSL_HPKE_get_grease_value(NULL, &g_suite, g_pub, &g_pub_len, g_cipher, g_cipher_len, testctx, NULL)) != 1) { overallresult = 0; } /* expansion */ expanded = OSSL_HPKE_get_ciphertext_size(g_suite, clearlen); if (!TEST_size_t_gt(expanded, clearlen)) { overallresult = 0; } enclen = OSSL_HPKE_get_public_encap_size(g_suite); if (!TEST_size_t_ne(enclen, 0)) overallresult = 0; /* not really GREASE but we'll check ikmelen thing */ ikmelen = OSSL_HPKE_get_recommended_ikmelen(g_suite); if (!TEST_size_t_ne(ikmelen, 0)) overallresult = 0; return overallresult; } /* * Make a set of calls with odd parameters */ static int test_hpke_oddcalls(void) { int erv = 0; EVP_PKEY *privp = NULL; unsigned char pub[OSSL_HPKE_TSTSIZE]; size_t publen = sizeof(pub); int hpke_mode = OSSL_HPKE_MODE_BASE; int bad_mode = 0xbad; OSSL_HPKE_SUITE hpke_suite = OSSL_HPKE_SUITE_DEFAULT; OSSL_HPKE_SUITE bad_suite = { 0xbad, 0xbad, 0xbad }; OSSL_HPKE_CTX *ctx = NULL; OSSL_HPKE_CTX *rctx = NULL; unsigned char plain[] = "quick brown fox"; size_t plainlen = sizeof(plain); unsigned char enc[OSSL_HPKE_TSTSIZE]; size_t enclen = sizeof(enc); unsigned char cipher[OSSL_HPKE_TSTSIZE]; size_t cipherlen = sizeof(cipher); unsigned char clear[OSSL_HPKE_TSTSIZE]; size_t clearlen = sizeof(clear); unsigned char fake_ikm[OSSL_HPKE_TSTSIZE]; char *badpropq = "yeah, this won't work"; uint64_t lseq = 0; char giant_pskid[OSSL_HPKE_MAX_PARMLEN + 10]; unsigned char info[OSSL_HPKE_TSTSIZE]; /* many of the calls below are designed to get better test coverage */ /* NULL ctx calls */ OSSL_HPKE_CTX_free(NULL); if (!TEST_false(OSSL_HPKE_CTX_set_seq(NULL, 1))) goto end; if (!TEST_false(OSSL_HPKE_CTX_get_seq(NULL, &lseq))) goto end; if (!TEST_false(OSSL_HPKE_CTX_set1_authpub(NULL, pub, publen))) goto end; if (!TEST_false(OSSL_HPKE_CTX_set1_authpriv(NULL, privp))) goto end; if (!TEST_false(OSSL_HPKE_CTX_set1_ikme(NULL, NULL, 0))) goto end; if (!TEST_false(OSSL_HPKE_CTX_set1_psk(NULL, NULL, NULL, 0))) goto end; /* bad suite calls */ hpke_suite.aead_id = 0xbad; if (!TEST_false(OSSL_HPKE_suite_check(hpke_suite))) goto end; hpke_suite.aead_id = OSSL_HPKE_AEAD_ID_AES_GCM_128; if (!TEST_false(OSSL_HPKE_suite_check(bad_suite))) goto end; if (!TEST_false(OSSL_HPKE_get_recommended_ikmelen(bad_suite))) goto end; if (!TEST_false(OSSL_HPKE_get_public_encap_size(bad_suite))) goto end; if (!TEST_false(OSSL_HPKE_get_ciphertext_size(bad_suite, 0))) goto end; if (!TEST_false(OSSL_HPKE_keygen(bad_suite, pub, &publen, &privp, NULL, 0, testctx, badpropq))) goto end; if (!TEST_false(OSSL_HPKE_keygen(bad_suite, pub, &publen, &privp, NULL, 0, testctx, NULL))) goto end; /* dodgy keygen calls */ /* no pub */ if (!TEST_false(OSSL_HPKE_keygen(hpke_suite, NULL, &publen, &privp, NULL, 0, testctx, NULL))) goto end; /* ikmlen but NULL ikm */ if (!TEST_false(OSSL_HPKE_keygen(hpke_suite, pub, &publen, &privp, NULL, 80, testctx, NULL))) goto end; /* zero ikmlen but ikm */ if (!TEST_false(OSSL_HPKE_keygen(hpke_suite, pub, &publen, &privp, fake_ikm, 0, testctx, NULL))) goto end; /* GIANT ikmlen */ if (!TEST_false(OSSL_HPKE_keygen(hpke_suite, pub, &publen, &privp, fake_ikm, -1, testctx, NULL))) goto end; /* short publen */ publen = 10; if (!TEST_false(OSSL_HPKE_keygen(hpke_suite, pub, &publen, &privp, NULL, 0, testctx, NULL))) goto end; publen = sizeof(pub); /* encap/decap with NULLs */ if (!TEST_false(OSSL_HPKE_encap(NULL, NULL, NULL, NULL, 0, NULL, 0))) goto end; if (!TEST_false(OSSL_HPKE_decap(NULL, NULL, 0, NULL, NULL, 0))) goto end; /* * run through a sender/recipient set of calls but with * failing calls interspersed whenever possible */ /* good keygen */ if (!TEST_true(OSSL_HPKE_keygen(hpke_suite, pub, &publen, &privp, NULL, 0, testctx, NULL))) goto end; /* a psk context with no psk => encap fail */ if (!TEST_ptr(ctx = OSSL_HPKE_CTX_new(OSSL_HPKE_MODE_PSK, hpke_suite, OSSL_HPKE_ROLE_SENDER, testctx, NULL))) goto end; /* set bad length psk */ if (!TEST_false(OSSL_HPKE_CTX_set1_psk(ctx, "foo", (unsigned char *)"bar", -1))) goto end; /* set bad length pskid */ memset(giant_pskid, 'A', sizeof(giant_pskid) - 1); giant_pskid[sizeof(giant_pskid) - 1] = '\0'; if (!TEST_false(OSSL_HPKE_CTX_set1_psk(ctx, giant_pskid, (unsigned char *)"bar", 3))) goto end; /* still no psk really set so encap fails */ if (!TEST_false(OSSL_HPKE_encap(ctx, enc, &enclen, pub, publen, NULL, 0))) goto end; OSSL_HPKE_CTX_free(ctx); /* bad suite */ if (!TEST_ptr_null(ctx = OSSL_HPKE_CTX_new(hpke_mode, bad_suite, OSSL_HPKE_ROLE_SENDER, testctx, NULL))) goto end; /* bad mode */ if (!TEST_ptr_null(ctx = OSSL_HPKE_CTX_new(bad_mode, hpke_suite, OSSL_HPKE_ROLE_SENDER, testctx, NULL))) goto end; /* make good ctx */ if (!TEST_ptr(ctx = OSSL_HPKE_CTX_new(hpke_mode, hpke_suite, OSSL_HPKE_ROLE_SENDER, testctx, NULL))) goto end; /* too long ikm */ if (!TEST_false(OSSL_HPKE_CTX_set1_ikme(ctx, fake_ikm, -1))) goto end; /* zero length ikm */ if (!TEST_false(OSSL_HPKE_CTX_set1_ikme(ctx, fake_ikm, 0))) goto end; /* NULL authpub */ if (!TEST_false(OSSL_HPKE_CTX_set1_authpub(ctx, NULL, 0))) goto end; /* NULL auth priv */ if (!TEST_false(OSSL_HPKE_CTX_set1_authpriv(ctx, NULL))) goto end; /* priv good, but mode is bad */ if (!TEST_false(OSSL_HPKE_CTX_set1_authpriv(ctx, privp))) goto end; /* bad mode for psk */ if (!TEST_false(OSSL_HPKE_CTX_set1_psk(ctx, "foo", (unsigned char *)"bar", 3))) goto end; /* seal before encap */ if (!TEST_false(OSSL_HPKE_seal(ctx, cipher, &cipherlen, NULL, 0, plain, plainlen))) goto end; /* encap with dodgy public */ if (!TEST_false(OSSL_HPKE_encap(ctx, enc, &enclen, pub, 1, NULL, 0))) goto end; /* encap with too big info */ if (!TEST_false(OSSL_HPKE_encap(ctx, enc, &enclen, pub, 1, info, -1))) goto end; /* good encap */ if (!TEST_true(OSSL_HPKE_encap(ctx, enc, &enclen, pub, publen, NULL, 0))) goto end; /* second encap fail */ if (!TEST_false(OSSL_HPKE_encap(ctx, enc, &enclen, pub, publen, NULL, 0))) goto end; plainlen = 0; /* should fail for no plaintext */ if (!TEST_false(OSSL_HPKE_seal(ctx, cipher, &cipherlen, NULL, 0, plain, plainlen))) goto end; plainlen = sizeof(plain); /* working seal */ if (!TEST_true(OSSL_HPKE_seal(ctx, cipher, &cipherlen, NULL, 0, plain, plainlen))) goto end; /* receiver side */ /* decap fail with psk mode but no psk set */ if (!TEST_ptr(rctx = OSSL_HPKE_CTX_new(OSSL_HPKE_MODE_PSK, hpke_suite, OSSL_HPKE_ROLE_RECEIVER, testctx, NULL))) goto end; if (!TEST_false(OSSL_HPKE_decap(rctx, enc, enclen, privp, NULL, 0))) goto end; /* done with PSK mode */ OSSL_HPKE_CTX_free(rctx); /* back good calls for base mode */ if (!TEST_ptr(rctx = OSSL_HPKE_CTX_new(hpke_mode, hpke_suite, OSSL_HPKE_ROLE_RECEIVER, testctx, NULL))) goto end; /* open before decap */ if (!TEST_false(OSSL_HPKE_open(rctx, clear, &clearlen, NULL, 0, cipher, cipherlen))) goto end; /* decap with info too long */ if (!TEST_false(OSSL_HPKE_decap(rctx, enc, enclen, privp, info, -1))) goto end; /* good decap */ if (!TEST_true(OSSL_HPKE_decap(rctx, enc, enclen, privp, NULL, 0))) goto end; /* second decap fail */ if (!TEST_false(OSSL_HPKE_decap(rctx, enc, enclen, privp, NULL, 0))) goto end; /* no space for recovered clear */ clearlen = 0; if (!TEST_false(OSSL_HPKE_open(rctx, clear, &clearlen, NULL, 0, cipher, cipherlen))) goto end; clearlen = OSSL_HPKE_TSTSIZE; /* seq wrap around test */ if (!TEST_true(OSSL_HPKE_CTX_set_seq(rctx, -1))) goto end; if (!TEST_false(OSSL_HPKE_open(rctx, clear, &clearlen, NULL, 0, cipher, cipherlen))) goto end; if (!TEST_true(OSSL_HPKE_CTX_set_seq(rctx, 0))) goto end; if (!TEST_true(OSSL_HPKE_open(rctx, clear, &clearlen, NULL, 0, cipher, cipherlen))) goto end; if (!TEST_mem_eq(plain, plainlen, clear, clearlen)) goto end; erv = 1; end: OSSL_HPKE_CTX_free(ctx); OSSL_HPKE_CTX_free(rctx); EVP_PKEY_free(privp); return erv; } #ifndef OPENSSL_NO_ECX /* from RFC 9180 Appendix A.1.1 */ static const unsigned char ikm25519[] = { 0x72, 0x68, 0x60, 0x0d, 0x40, 0x3f, 0xce, 0x43, 0x15, 0x61, 0xae, 0xf5, 0x83, 0xee, 0x16, 0x13, 0x52, 0x7c, 0xff, 0x65, 0x5c, 0x13, 0x43, 0xf2, 0x98, 0x12, 0xe6, 0x67, 0x06, 0xdf, 0x32, 0x34 }; static const unsigned char pub25519[] = { 0x37, 0xfd, 0xa3, 0x56, 0x7b, 0xdb, 0xd6, 0x28, 0xe8, 0x86, 0x68, 0xc3, 0xc8, 0xd7, 0xe9, 0x7d, 0x1d, 0x12, 0x53, 0xb6, 0xd4, 0xea, 0x6d, 0x44, 0xc1, 0x50, 0xf7, 0x41, 0xf1, 0xbf, 0x44, 0x31 }; #endif /* from RFC9180 Appendix A.3.1 */ static const unsigned char ikmp256[] = { 0x42, 0x70, 0xe5, 0x4f, 0xfd, 0x08, 0xd7, 0x9d, 0x59, 0x28, 0x02, 0x0a, 0xf4, 0x68, 0x6d, 0x8f, 0x6b, 0x7d, 0x35, 0xdb, 0xe4, 0x70, 0x26, 0x5f, 0x1f, 0x5a, 0xa2, 0x28, 0x16, 0xce, 0x86, 0x0e }; static const unsigned char pubp256[] = { 0x04, 0xa9, 0x27, 0x19, 0xc6, 0x19, 0x5d, 0x50, 0x85, 0x10, 0x4f, 0x46, 0x9a, 0x8b, 0x98, 0x14, 0xd5, 0x83, 0x8f, 0xf7, 0x2b, 0x60, 0x50, 0x1e, 0x2c, 0x44, 0x66, 0xe5, 0xe6, 0x7b, 0x32, 0x5a, 0xc9, 0x85, 0x36, 0xd7, 0xb6, 0x1a, 0x1a, 0xf4, 0xb7, 0x8e, 0x5b, 0x7f, 0x95, 0x1c, 0x09, 0x00, 0xbe, 0x86, 0x3c, 0x40, 0x3c, 0xe6, 0x5c, 0x9b, 0xfc, 0xb9, 0x38, 0x26, 0x57, 0x22, 0x2d, 0x18, 0xc4 }; /* * A test vector that exercises the counter iteration * for p256. This was contributed by Ilari L. on the * CFRG list, see the mail archive: * https://mailarchive.ietf.org/arch/msg/cfrg/4zwl_y5YN6OU9oeWZOMHNOlOa2w/ */ static const unsigned char ikmiter[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x01, 0x38, 0xb5, 0xec }; static const unsigned char pubiter[] = { 0x04, 0x7d, 0x0c, 0x87, 0xff, 0xd5, 0xd1, 0x45, 0x54, 0xa7, 0x51, 0xdf, 0xa3, 0x99, 0x26, 0xa9, 0xe3, 0x0e, 0x7c, 0x3c, 0x65, 0x62, 0x4f, 0x4b, 0x5f, 0xb3, 0xad, 0x7a, 0xa4, 0xda, 0xc2, 0x4a, 0xd8, 0xf5, 0xbe, 0xd0, 0xe8, 0x6e, 0xb8, 0x84, 0x1c, 0xe4, 0x89, 0x2e, 0x0f, 0xc3, 0x87, 0xbb, 0xdb, 0xfe, 0x16, 0x0d, 0x58, 0x9c, 0x89, 0x2d, 0xd4, 0xb1, 0x46, 0x4a, 0xc3, 0x51, 0xc5, 0x6f, 0xb6 }; /* from RFC9180 Appendix A.6.1 */ static const unsigned char ikmp521[] = { 0x7f, 0x06, 0xab, 0x82, 0x15, 0x10, 0x5f, 0xc4, 0x6a, 0xce, 0xeb, 0x2e, 0x3d, 0xc5, 0x02, 0x8b, 0x44, 0x36, 0x4f, 0x96, 0x04, 0x26, 0xeb, 0x0d, 0x8e, 0x40, 0x26, 0xc2, 0xf8, 0xb5, 0xd7, 0xe7, 0xa9, 0x86, 0x68, 0x8f, 0x15, 0x91, 0xab, 0xf5, 0xab, 0x75, 0x3c, 0x35, 0x7a, 0x5d, 0x6f, 0x04, 0x40, 0x41, 0x4b, 0x4e, 0xd4, 0xed, 0xe7, 0x13, 0x17, 0x77, 0x2a, 0xc9, 0x8d, 0x92, 0x39, 0xf7, 0x09, 0x04 }; static const unsigned char pubp521[] = { 0x04, 0x01, 0x38, 0xb3, 0x85, 0xca, 0x16, 0xbb, 0x0d, 0x5f, 0xa0, 0xc0, 0x66, 0x5f, 0xbb, 0xd7, 0xe6, 0x9e, 0x3e, 0xe2, 0x9f, 0x63, 0x99, 0x1d, 0x3e, 0x9b, 0x5f, 0xa7, 0x40, 0xaa, 0xb8, 0x90, 0x0a, 0xae, 0xed, 0x46, 0xed, 0x73, 0xa4, 0x90, 0x55, 0x75, 0x84, 0x25, 0xa0, 0xce, 0x36, 0x50, 0x7c, 0x54, 0xb2, 0x9c, 0xc5, 0xb8, 0x5a, 0x5c, 0xee, 0x6b, 0xae, 0x0c, 0xf1, 0xc2, 0x1f, 0x27, 0x31, 0xec, 0xe2, 0x01, 0x3d, 0xc3, 0xfb, 0x7c, 0x8d, 0x21, 0x65, 0x4b, 0xb1, 0x61, 0xb4, 0x63, 0x96, 0x2c, 0xa1, 0x9e, 0x8c, 0x65, 0x4f, 0xf2, 0x4c, 0x94, 0xdd, 0x28, 0x98, 0xde, 0x12, 0x05, 0x1f, 0x1e, 0xd0, 0x69, 0x22, 0x37, 0xfb, 0x02, 0xb2, 0xf8, 0xd1, 0xdc, 0x1c, 0x73, 0xe9, 0xb3, 0x66, 0xb5, 0x29, 0xeb, 0x43, 0x6e, 0x98, 0xa9, 0x96, 0xee, 0x52, 0x2a, 0xef, 0x86, 0x3d, 0xd5, 0x73, 0x9d, 0x2f, 0x29, 0xb0 }; static int test_hpke_random_suites(void) { OSSL_HPKE_SUITE def_suite = OSSL_HPKE_SUITE_DEFAULT; OSSL_HPKE_SUITE suite = OSSL_HPKE_SUITE_DEFAULT; OSSL_HPKE_SUITE suite2 = { 0xff01, 0xff02, 0xff03 }; unsigned char enc[200]; size_t enclen = sizeof(enc); unsigned char ct[500]; size_t ctlen = sizeof(ct); /* test with NULL/0 inputs */ if (!TEST_false(OSSL_HPKE_get_grease_value(NULL, NULL, NULL, NULL, NULL, 0, testctx, NULL))) return 0; enclen = 10; if (!TEST_false(OSSL_HPKE_get_grease_value(&def_suite, &suite2, enc, &enclen, ct, ctlen, testctx, NULL))) return 0; enclen = sizeof(enc); /* reset, 'cause get_grease() will have set */ /* test with a should-be-good suite */ if (!TEST_true(OSSL_HPKE_get_grease_value(&def_suite, &suite2, enc, &enclen, ct, ctlen, testctx, NULL))) return 0; /* no suggested suite */ enclen = sizeof(enc); /* reset, 'cause get_grease() will have set */ if (!TEST_true(OSSL_HPKE_get_grease_value(NULL, &suite2, enc, &enclen, ct, ctlen, testctx, NULL))) return 0; /* suggested suite with P-521, just to be sure we hit long values */ enclen = sizeof(enc); /* reset, 'cause get_grease() will have set */ suite.kem_id = OSSL_HPKE_KEM_ID_P521; if (!TEST_true(OSSL_HPKE_get_grease_value(&suite, &suite2, enc, &enclen, ct, ctlen, testctx, NULL))) return 0; enclen = sizeof(enc); ctlen = 2; /* too-short cttext (can't fit an aead tag) */ if (!TEST_false(OSSL_HPKE_get_grease_value(NULL, &suite2, enc, &enclen, ct, ctlen, testctx, NULL))) return 0; ctlen = sizeof(ct); enclen = sizeof(enc); suite.kem_id = OSSL_HPKE_KEM_ID_X25519; /* back to default */ suite.aead_id = 0x1234; /* bad aead */ if (!TEST_false(OSSL_HPKE_get_grease_value(&suite, &suite2, enc, &enclen, ct, ctlen, testctx, NULL))) return 0; enclen = sizeof(enc); suite.aead_id = def_suite.aead_id; /* good aead */ suite.kdf_id = 0x3451; /* bad kdf */ if (!TEST_false(OSSL_HPKE_get_grease_value(&suite, &suite2, enc, &enclen, ct, ctlen, testctx, NULL))) return 0; enclen = sizeof(enc); suite.kdf_id = def_suite.kdf_id; /* good kdf */ suite.kem_id = 0x4517; /* bad kem */ if (!TEST_false(OSSL_HPKE_get_grease_value(&suite, &suite2, enc, &enclen, ct, ctlen, testctx, NULL))) return 0; return 1; } /* * @brief generate a key pair from initial key material (ikm) and check public * @param kem_id the KEM to use (RFC9180 code point) * @ikm is the initial key material buffer * @ikmlen is the length of ikm * @pub is the public key buffer * @publen is the length of the public key * @return 1 for good, other otherwise * * This calls OSSL_HPKE_keygen specifying only the IKM, then * compares the key pair values with the already-known values * that were input. */ static int test_hpke_one_ikm_gen(uint16_t kem_id, const unsigned char *ikm, size_t ikmlen, const unsigned char *pub, size_t publen) { OSSL_HPKE_SUITE hpke_suite = OSSL_HPKE_SUITE_DEFAULT; unsigned char lpub[OSSL_HPKE_TSTSIZE]; size_t lpublen = OSSL_HPKE_TSTSIZE; EVP_PKEY *sk = NULL; hpke_suite.kem_id = kem_id; if (!TEST_true(OSSL_HPKE_keygen(hpke_suite, lpub, &lpublen, &sk, ikm, ikmlen, testctx, NULL))) return 0; if (!TEST_ptr(sk)) return 0; EVP_PKEY_free(sk); if (!TEST_mem_eq(pub, publen, lpub, lpublen)) return 0; return 1; } /* * @brief test some uses of IKM produce the expected public keys */ static int test_hpke_ikms(void) { int res = 1; #ifndef OPENSSL_NO_ECX res = test_hpke_one_ikm_gen(OSSL_HPKE_KEM_ID_X25519, ikm25519, sizeof(ikm25519), pub25519, sizeof(pub25519)); if (res != 1) return res; #endif res = test_hpke_one_ikm_gen(OSSL_HPKE_KEM_ID_P521, ikmp521, sizeof(ikmp521), pubp521, sizeof(pubp521)); if (res != 1) return res; res = test_hpke_one_ikm_gen(OSSL_HPKE_KEM_ID_P256, ikmp256, sizeof(ikmp256), pubp256, sizeof(pubp256)); if (res != 1) return res; res = test_hpke_one_ikm_gen(OSSL_HPKE_KEM_ID_P256, ikmiter, sizeof(ikmiter), pubiter, sizeof(pubiter)); if (res != 1) return res; return res; } /* * Test that use of a compressed format auth public key works * We'll do a typical round-trip for auth mode but provide the * auth public key in compressed form. That should work. */ static int test_hpke_compressed(void) { int erv = 0; EVP_PKEY *privp = NULL; unsigned char pub[OSSL_HPKE_TSTSIZE]; size_t publen = sizeof(pub); EVP_PKEY *authpriv = NULL; unsigned char authpub[OSSL_HPKE_TSTSIZE]; size_t authpublen = sizeof(authpub); int hpke_mode = OSSL_HPKE_MODE_AUTH; OSSL_HPKE_SUITE hpke_suite = OSSL_HPKE_SUITE_DEFAULT; OSSL_HPKE_CTX *ctx = NULL; OSSL_HPKE_CTX *rctx = NULL; unsigned char plain[] = "quick brown fox"; size_t plainlen = sizeof(plain); unsigned char enc[OSSL_HPKE_TSTSIZE]; size_t enclen = sizeof(enc); unsigned char cipher[OSSL_HPKE_TSTSIZE]; size_t cipherlen = sizeof(cipher); unsigned char clear[OSSL_HPKE_TSTSIZE]; size_t clearlen = sizeof(clear); hpke_suite.kem_id = OSSL_HPKE_KEM_ID_P256; /* generate auth key pair */ if (!TEST_true(OSSL_HPKE_keygen(hpke_suite, authpub, &authpublen, &authpriv, NULL, 0, testctx, NULL))) goto end; /* now get the compressed form public key */ if (!TEST_true(EVP_PKEY_set_utf8_string_param(authpriv, OSSL_PKEY_PARAM_EC_POINT_CONVERSION_FORMAT, OSSL_PKEY_EC_POINT_CONVERSION_FORMAT_COMPRESSED))) goto end; if (!TEST_true(EVP_PKEY_get_octet_string_param(authpriv, OSSL_PKEY_PARAM_PUB_KEY, authpub, sizeof(authpub), &authpublen))) goto end; /* sender side as usual */ if (!TEST_true(OSSL_HPKE_keygen(hpke_suite, pub, &publen, &privp, NULL, 0, testctx, NULL))) goto end; if (!TEST_ptr(ctx = OSSL_HPKE_CTX_new(hpke_mode, hpke_suite, OSSL_HPKE_ROLE_SENDER, testctx, NULL))) goto end; if (!TEST_true(OSSL_HPKE_CTX_set1_authpriv(ctx, authpriv))) goto end; if (!TEST_true(OSSL_HPKE_encap(ctx, enc, &enclen, pub, publen, NULL, 0))) goto end; if (!TEST_true(OSSL_HPKE_seal(ctx, cipher, &cipherlen, NULL, 0, plain, plainlen))) goto end; /* receiver side providing compressed form of auth public */ if (!TEST_ptr(rctx = OSSL_HPKE_CTX_new(hpke_mode, hpke_suite, OSSL_HPKE_ROLE_RECEIVER, testctx, NULL))) goto end; if (!TEST_true(OSSL_HPKE_CTX_set1_authpub(rctx, authpub, authpublen))) goto end; if (!TEST_true(OSSL_HPKE_decap(rctx, enc, enclen, privp, NULL, 0))) goto end; if (!TEST_true(OSSL_HPKE_open(rctx, clear, &clearlen, NULL, 0, cipher, cipherlen))) goto end; erv = 1; end: EVP_PKEY_free(privp); EVP_PKEY_free(authpriv); OSSL_HPKE_CTX_free(ctx); OSSL_HPKE_CTX_free(rctx); return erv; } /* * Test that nonce reuse calls are prevented as we expect */ static int test_hpke_noncereuse(void) { int erv = 0; EVP_PKEY *privp = NULL; unsigned char pub[OSSL_HPKE_TSTSIZE]; size_t publen = sizeof(pub); int hpke_mode = OSSL_HPKE_MODE_BASE; OSSL_HPKE_SUITE hpke_suite = OSSL_HPKE_SUITE_DEFAULT; OSSL_HPKE_CTX *ctx = NULL; OSSL_HPKE_CTX *rctx = NULL; unsigned char plain[] = "quick brown fox"; size_t plainlen = sizeof(plain); unsigned char enc[OSSL_HPKE_TSTSIZE]; size_t enclen = sizeof(enc); unsigned char cipher[OSSL_HPKE_TSTSIZE]; size_t cipherlen = sizeof(cipher); unsigned char clear[OSSL_HPKE_TSTSIZE]; size_t clearlen = sizeof(clear); uint64_t seq = 0xbad1dea; /* sender side is not allowed set seq once some crypto done */ if (!TEST_true(OSSL_HPKE_keygen(hpke_suite, pub, &publen, &privp, NULL, 0, testctx, NULL))) goto end; if (!TEST_ptr(ctx = OSSL_HPKE_CTX_new(hpke_mode, hpke_suite, OSSL_HPKE_ROLE_SENDER, testctx, NULL))) goto end; /* set seq will fail before any crypto done */ if (!TEST_false(OSSL_HPKE_CTX_set_seq(ctx, seq))) goto end; if (!TEST_true(OSSL_HPKE_encap(ctx, enc, &enclen, pub, publen, NULL, 0))) goto end; /* set seq will also fail after some crypto done */ if (!TEST_false(OSSL_HPKE_CTX_set_seq(ctx, seq + 1))) goto end; if (!TEST_true(OSSL_HPKE_seal(ctx, cipher, &cipherlen, NULL, 0, plain, plainlen))) goto end; /* receiver side is allowed control seq */ if (!TEST_ptr(rctx = OSSL_HPKE_CTX_new(hpke_mode, hpke_suite, OSSL_HPKE_ROLE_RECEIVER, testctx, NULL))) goto end; /* set seq will work before any crypto done */ if (!TEST_true(OSSL_HPKE_CTX_set_seq(rctx, seq))) goto end; if (!TEST_true(OSSL_HPKE_decap(rctx, enc, enclen, privp, NULL, 0))) goto end; /* set seq will work for receivers even after crypto done */ if (!TEST_true(OSSL_HPKE_CTX_set_seq(rctx, seq))) goto end; /* but that value isn't good so decap will fail */ if (!TEST_false(OSSL_HPKE_open(rctx, clear, &clearlen, NULL, 0, cipher, cipherlen))) goto end; /* reset seq to correct value and _open() should work */ if (!TEST_true(OSSL_HPKE_CTX_set_seq(rctx, 0))) goto end; if (!TEST_true(OSSL_HPKE_open(rctx, clear, &clearlen, NULL, 0, cipher, cipherlen))) goto end; erv = 1; end: EVP_PKEY_free(privp); OSSL_HPKE_CTX_free(ctx); OSSL_HPKE_CTX_free(rctx); return erv; } typedef enum OPTION_choice { OPT_ERR = -1, OPT_EOF = 0, OPT_VERBOSE, OPT_TEST_ENUM } OPTION_CHOICE; const OPTIONS *test_get_options(void) { static const OPTIONS test_options[] = { OPT_TEST_OPTIONS_DEFAULT_USAGE, { "v", OPT_VERBOSE, '-', "Enable verbose mode" }, { OPT_HELP_STR, 1, '-', "Run HPKE tests\n" }, { NULL } }; return test_options; } int setup_tests(void) { OPTION_CHOICE o; while ((o = opt_next()) != OPT_EOF) { switch (o) { case OPT_VERBOSE: verbose = 1; /* Print progress dots */ break; case OPT_TEST_CASES: break; default: return 0; } } if (!test_get_libctx(&testctx, &nullprov, NULL, &deflprov, "default")) return 0; #ifndef OPENSSL_NO_ECX ADD_TEST(export_only_test); ADD_TEST(x25519kdfsha256_hkdfsha256_aes128gcm_base_test); ADD_TEST(x25519kdfsha256_hkdfsha256_aes128gcm_psk_test); #endif ADD_TEST(P256kdfsha256_hkdfsha256_aes128gcm_base_test); ADD_TEST(test_hpke_export); ADD_TEST(test_hpke_modes_suites); ADD_TEST(test_hpke_suite_strs); ADD_TEST(test_hpke_grease); ADD_TEST(test_hpke_ikms); ADD_TEST(test_hpke_random_suites); ADD_TEST(test_hpke_oddcalls); ADD_TEST(test_hpke_compressed); ADD_TEST(test_hpke_noncereuse); return 1; } void cleanup_tests(void) { OSSL_PROVIDER_unload(deflprov); OSSL_PROVIDER_unload(nullprov); OSSL_LIB_CTX_free(testctx); }