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0044-FIPS-140-3-keychecks.patch
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File 0044-FIPS-140-3-keychecks.patch of Package openssl
From b300beb172d5813b01b93bfd62fe191f8187fe1e Mon Sep 17 00:00:00 2001 From: Dmitry Belyavskiy <dbelyavs@redhat.com> Date: Mon, 21 Aug 2023 12:05:23 +0200 Subject: [PATCH 20/48] 0044-FIPS-140-3-keychecks.patch Patch-name: 0044-FIPS-140-3-keychecks.patch Patch-id: 44 Patch-status: | # Extra public/private key checks required by FIPS-140-3 --- crypto/dh/dh_key.c | 26 ++++++++++ .../implementations/exchange/ecdh_exch.c | 19 ++++++++ providers/implementations/keymgmt/ec_kmgmt.c | 24 +++++++++- providers/implementations/keymgmt/rsa_kmgmt.c | 18 +++++++ .../implementations/signature/ecdsa_sig.c | 37 +++++++++++++-- providers/implementations/signature/rsa_sig.c | 47 +++++++++++++++++-- 6 files changed, 162 insertions(+), 9 deletions(-) diff --git a/crypto/dh/dh_key.c b/crypto/dh/dh_key.c index 4e9705beef..83773cceea 100644 --- a/crypto/dh/dh_key.c +++ b/crypto/dh/dh_key.c @@ -43,6 +43,9 @@ int ossl_dh_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh) BN_MONT_CTX *mont = NULL; BIGNUM *z = NULL, *pminus1; int ret = -1; +#ifdef FIPS_MODULE + int validate = 0; +#endif if (BN_num_bits(dh->params.p) > OPENSSL_DH_MAX_MODULUS_BITS) { ERR_raise(ERR_LIB_DH, DH_R_MODULUS_TOO_LARGE); @@ -54,6 +57,13 @@ int ossl_dh_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh) return 0; } +#ifdef FIPS_MODULE + if (DH_check_pub_key(dh, pub_key, &validate) <= 0) { + ERR_raise(ERR_LIB_DH, DH_R_CHECK_PUBKEY_INVALID); + return 0; + } +#endif + ctx = BN_CTX_new_ex(dh->libctx); if (ctx == NULL) goto err; @@ -262,6 +272,9 @@ static int generate_key(DH *dh) #endif BN_CTX *ctx = NULL; BIGNUM *pub_key = NULL, *priv_key = NULL; +#ifdef FIPS_MODULE + int validate = 0; +#endif if (BN_num_bits(dh->params.p) > OPENSSL_DH_MAX_MODULUS_BITS) { ERR_raise(ERR_LIB_DH, DH_R_MODULUS_TOO_LARGE); @@ -354,8 +367,21 @@ static int generate_key(DH *dh) if (!ossl_dh_generate_public_key(ctx, dh, priv_key, pub_key)) goto err; +#ifdef FIPS_MODULE + if (DH_check_pub_key(dh, pub_key, &validate) <= 0) { + ERR_raise(ERR_LIB_DH, DH_R_CHECK_PUBKEY_INVALID); + goto err; + } +#endif + dh->pub_key = pub_key; dh->priv_key = priv_key; +#ifdef FIPS_MODULE + if (ossl_dh_check_pairwise(dh) <= 0) { + abort(); + } +#endif + dh->dirty_cnt++; ok = 1; err: diff --git a/providers/implementations/exchange/ecdh_exch.c b/providers/implementations/exchange/ecdh_exch.c index 43caedb6df..73873f9758 100644 --- a/providers/implementations/exchange/ecdh_exch.c +++ b/providers/implementations/exchange/ecdh_exch.c @@ -489,6 +489,25 @@ int ecdh_plain_derive(void *vpecdhctx, unsigned char *secret, } ppubkey = EC_KEY_get0_public_key(pecdhctx->peerk); +#ifdef FIPS_MODULE + { + BN_CTX *bn_ctx = BN_CTX_new_ex(ossl_ec_key_get_libctx(privk)); + int check = 0; + + if (bn_ctx == NULL) { + ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); + goto end; + } + + check = ossl_ec_key_public_check(pecdhctx->peerk, bn_ctx); + BN_CTX_free(bn_ctx); + + if (check <= 0) { + ERR_raise(ERR_LIB_PROV, EC_R_INVALID_PEER_KEY); + goto end; + } + } +#endif retlen = ECDH_compute_key(secret, size, ppubkey, privk, NULL); diff --git a/providers/implementations/keymgmt/ec_kmgmt.c b/providers/implementations/keymgmt/ec_kmgmt.c index a37cbbdba8..bca3f3c674 100644 --- a/providers/implementations/keymgmt/ec_kmgmt.c +++ b/providers/implementations/keymgmt/ec_kmgmt.c @@ -989,8 +989,17 @@ struct ec_gen_ctx { int selection; int ecdh_mode; EC_GROUP *gen_group; +#ifdef FIPS_MODULE + void *ecdsa_sig_ctx; +#endif }; +#ifdef FIPS_MODULE +void *ecdsa_newctx(void *provctx, const char *propq); +void ecdsa_freectx(void *vctx); +int do_ec_pct(void *, const char *, void *); +#endif + static void *ec_gen_init(void *provctx, int selection, const OSSL_PARAM params[]) { @@ -1009,6 +1018,10 @@ static void *ec_gen_init(void *provctx, int selection, gctx = NULL; } } +#ifdef FIPS_MODULE + if (gctx != NULL) + gctx->ecdsa_sig_ctx = ecdsa_newctx(provctx, NULL); +#endif return gctx; } @@ -1279,6 +1292,12 @@ static void *ec_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg) if (gctx->ecdh_mode != -1) ret = ret && ossl_ec_set_ecdh_cofactor_mode(ec, gctx->ecdh_mode); +#ifdef FIPS_MODULE + /* Pairwise consistency test */ + if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0 + && do_ec_pct(gctx->ecdsa_sig_ctx, "sha256", ec) != 1) + abort(); +#endif if (gctx->group_check != NULL) ret = ret && ossl_ec_set_check_group_type_from_name(ec, gctx->group_check); @@ -1348,7 +1367,10 @@ static void ec_gen_cleanup(void *genctx) if (gctx == NULL) return; - +#ifdef FIPS_MODULE + ecdsa_freectx(gctx->ecdsa_sig_ctx); + gctx->ecdsa_sig_ctx = NULL; +#endif EC_GROUP_free(gctx->gen_group); BN_free(gctx->p); BN_free(gctx->a); diff --git a/providers/implementations/keymgmt/rsa_kmgmt.c b/providers/implementations/keymgmt/rsa_kmgmt.c index 3ba12c4889..ff49f8fcd8 100644 --- a/providers/implementations/keymgmt/rsa_kmgmt.c +++ b/providers/implementations/keymgmt/rsa_kmgmt.c @@ -434,6 +434,7 @@ struct rsa_gen_ctx { #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS) /* ACVP test parameters */ OSSL_PARAM *acvp_test_params; + void *prov_rsa_ctx; #endif }; @@ -447,6 +448,12 @@ static int rsa_gencb(int p, int n, BN_GENCB *cb) return gctx->cb(params, gctx->cbarg); } +#ifdef FIPS_MODULE +void *rsa_newctx(void *provctx, const char *propq); +void rsa_freectx(void *vctx); +int do_rsa_pct(void *, const char *, void *); +#endif + static void *gen_init(void *provctx, int selection, int rsa_type, const OSSL_PARAM params[]) { @@ -474,6 +481,10 @@ static void *gen_init(void *provctx, int selection, int rsa_type, if (!rsa_gen_set_params(gctx, params)) goto err; +#ifdef FIPS_MODULE + if (gctx != NULL) + gctx->prov_rsa_ctx = rsa_newctx(provctx, NULL); +#endif return gctx; err: @@ -630,6 +641,11 @@ static void *rsa_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg) rsa = rsa_tmp; rsa_tmp = NULL; +#ifdef FIPS_MODULE + /* Pairwise consistency test */ + if (do_rsa_pct(gctx->prov_rsa_ctx, "sha256", rsa) != 1) + abort(); +#endif err: BN_GENCB_free(gencb); RSA_free(rsa_tmp); @@ -645,6 +661,8 @@ static void rsa_gen_cleanup(void *genctx) #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS) ossl_rsa_acvp_test_gen_params_free(gctx->acvp_test_params); gctx->acvp_test_params = NULL; + rsa_freectx(gctx->prov_rsa_ctx); + gctx->prov_rsa_ctx = NULL; #endif BN_clear_free(gctx->pub_exp); OPENSSL_free(gctx); diff --git a/providers/implementations/signature/ecdsa_sig.c b/providers/implementations/signature/ecdsa_sig.c index 865d49d100..ebeb30e002 100644 --- a/providers/implementations/signature/ecdsa_sig.c +++ b/providers/implementations/signature/ecdsa_sig.c @@ -32,7 +32,7 @@ #include "crypto/ec.h" #include "prov/der_ec.h" -static OSSL_FUNC_signature_newctx_fn ecdsa_newctx; +OSSL_FUNC_signature_newctx_fn ecdsa_newctx; static OSSL_FUNC_signature_sign_init_fn ecdsa_sign_init; static OSSL_FUNC_signature_verify_init_fn ecdsa_verify_init; static OSSL_FUNC_signature_sign_fn ecdsa_sign; @@ -43,7 +43,7 @@ static OSSL_FUNC_signature_digest_sign_final_fn ecdsa_digest_sign_final; static OSSL_FUNC_signature_digest_verify_init_fn ecdsa_digest_verify_init; static OSSL_FUNC_signature_digest_verify_update_fn ecdsa_digest_signverify_update; static OSSL_FUNC_signature_digest_verify_final_fn ecdsa_digest_verify_final; -static OSSL_FUNC_signature_freectx_fn ecdsa_freectx; +OSSL_FUNC_signature_freectx_fn ecdsa_freectx; static OSSL_FUNC_signature_dupctx_fn ecdsa_dupctx; static OSSL_FUNC_signature_get_ctx_params_fn ecdsa_get_ctx_params; static OSSL_FUNC_signature_gettable_ctx_params_fn ecdsa_gettable_ctx_params; @@ -104,7 +104,7 @@ typedef struct { #endif } PROV_ECDSA_CTX; -static void *ecdsa_newctx(void *provctx, const char *propq) +void *ecdsa_newctx(void *provctx, const char *propq) { PROV_ECDSA_CTX *ctx; @@ -370,7 +370,7 @@ int ecdsa_digest_verify_final(void *vctx, const unsigned char *sig, return ecdsa_verify(ctx, sig, siglen, digest, (size_t)dlen); } -static void ecdsa_freectx(void *vctx) +void ecdsa_freectx(void *vctx) { PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx; @@ -581,6 +581,35 @@ static const OSSL_PARAM *ecdsa_settable_ctx_md_params(void *vctx) return EVP_MD_settable_ctx_params(ctx->md); } +#ifdef FIPS_MODULE +int do_ec_pct(void *vctx, const char *mdname, void *ec) +{ + static const unsigned char data[32]; + unsigned char sigbuf[256]; + size_t siglen = sizeof(sigbuf); + + if (ecdsa_digest_sign_init(vctx, mdname, ec, NULL) <= 0) + return 0; + + if (ecdsa_digest_signverify_update(vctx, data, sizeof(data)) <= 0) + return 0; + + if (ecdsa_digest_sign_final(vctx, sigbuf, &siglen, sizeof(sigbuf)) <= 0) + return 0; + + if (ecdsa_digest_verify_init(vctx, mdname, ec, NULL) <= 0) + return 0; + + if (ecdsa_digest_signverify_update(vctx, data, sizeof(data)) <= 0) + return 0; + + if (ecdsa_digest_verify_final(vctx, sigbuf, siglen) <= 0) + return 0; + + return 1; +} +#endif + const OSSL_DISPATCH ossl_ecdsa_signature_functions[] = { { OSSL_FUNC_SIGNATURE_NEWCTX, (void (*)(void))ecdsa_newctx }, { OSSL_FUNC_SIGNATURE_SIGN_INIT, (void (*)(void))ecdsa_sign_init }, diff --git a/providers/implementations/signature/rsa_sig.c b/providers/implementations/signature/rsa_sig.c index cd5de6bd51..d4261e8f7d 100644 --- a/providers/implementations/signature/rsa_sig.c +++ b/providers/implementations/signature/rsa_sig.c @@ -34,7 +34,7 @@ #define RSA_DEFAULT_DIGEST_NAME OSSL_DIGEST_NAME_SHA1 -static OSSL_FUNC_signature_newctx_fn rsa_newctx; +OSSL_FUNC_signature_newctx_fn rsa_newctx; static OSSL_FUNC_signature_sign_init_fn rsa_sign_init; static OSSL_FUNC_signature_verify_init_fn rsa_verify_init; static OSSL_FUNC_signature_verify_recover_init_fn rsa_verify_recover_init; @@ -47,7 +47,7 @@ static OSSL_FUNC_signature_digest_sign_final_fn rsa_digest_sign_final; static OSSL_FUNC_signature_digest_verify_init_fn rsa_digest_verify_init; static OSSL_FUNC_signature_digest_verify_update_fn rsa_digest_signverify_update; static OSSL_FUNC_signature_digest_verify_final_fn rsa_digest_verify_final; -static OSSL_FUNC_signature_freectx_fn rsa_freectx; +OSSL_FUNC_signature_freectx_fn rsa_freectx; static OSSL_FUNC_signature_dupctx_fn rsa_dupctx; static OSSL_FUNC_signature_get_ctx_params_fn rsa_get_ctx_params; static OSSL_FUNC_signature_gettable_ctx_params_fn rsa_gettable_ctx_params; @@ -170,7 +170,7 @@ static int rsa_check_parameters(PROV_RSA_CTX *prsactx, int min_saltlen) return 1; } -static void *rsa_newctx(void *provctx, const char *propq) +void *rsa_newctx(void *provctx, const char *propq) { PROV_RSA_CTX *prsactx = NULL; char *propq_copy = NULL; @@ -977,7 +977,7 @@ int rsa_digest_verify_final(void *vprsactx, const unsigned char *sig, return rsa_verify(vprsactx, sig, siglen, digest, (size_t)dlen); } -static void rsa_freectx(void *vprsactx) +void rsa_freectx(void *vprsactx) { PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx; @@ -1455,6 +1455,45 @@ static const OSSL_PARAM *rsa_settable_ctx_md_params(void *vprsactx) return EVP_MD_settable_ctx_params(prsactx->md); } +#ifdef FIPS_MODULE +int do_rsa_pct(void *vctx, const char *mdname, void *rsa) +{ + static const unsigned char data[32]; + unsigned char *sigbuf = NULL; + size_t siglen = 0; + int ret = 0; + + if (rsa_digest_sign_init(vctx, mdname, rsa, NULL) <= 0) + return 0; + + if (rsa_digest_signverify_update(vctx, data, sizeof(data)) <= 0) + return 0; + + if (rsa_digest_sign_final(vctx, NULL, &siglen, 0) <= 0) + return 0; + + if ((sigbuf = OPENSSL_malloc(siglen)) == NULL) + return 0; + + if (rsa_digest_sign_final(vctx, sigbuf, &siglen, siglen) <= 0) + goto err; + + if (rsa_digest_verify_init(vctx, mdname, rsa, NULL) <= 0) + goto err; + + if (rsa_digest_signverify_update(vctx, data, sizeof(data)) <= 0) + goto err; + + if (rsa_digest_verify_final(vctx, sigbuf, siglen) <= 0) + goto err; + ret = 1; + + err: + OPENSSL_free(sigbuf); + return ret; +} +#endif + const OSSL_DISPATCH ossl_rsa_signature_functions[] = { { OSSL_FUNC_SIGNATURE_NEWCTX, (void (*)(void))rsa_newctx }, { OSSL_FUNC_SIGNATURE_SIGN_INIT, (void (*)(void))rsa_sign_init }, -- 2.41.0
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