diff options
author | slontis <shane.lontis@oracle.com> | 2023-01-25 11:25:33 +1000 |
---|---|---|
committer | Pauli <pauli@openssl.org> | 2023-03-15 08:49:03 +1100 |
commit | 9191dfb0ef48f95002aecfa8e11d9db434b4093d (patch) | |
tree | 3c18ea874a8c08a32fdc15ceb56f2e9f474d83bd /crypto/pkcs12 | |
parent | 513b20a982e237fbd4c281c1c7ba817864f9a827 (diff) |
Fix PKCS12_newpass() to work with PBES2.
Fixes #19092
The code looks like it was written to work with PBES1.
As it had no tests, this would of then broken when PBES2
was introduced at a later point.
Also added libctx and propq support.
This affects the shroudedkeybag object.
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/20134)
Diffstat (limited to 'crypto/pkcs12')
-rw-r--r-- | crypto/pkcs12/p12_npas.c | 145 |
1 files changed, 109 insertions, 36 deletions
diff --git a/crypto/pkcs12/p12_npas.c b/crypto/pkcs12/p12_npas.c index 62230bc618..90139100c6 100644 --- a/crypto/pkcs12/p12_npas.c +++ b/crypto/pkcs12/p12_npas.c @@ -19,11 +19,13 @@ static int newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass); static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *oldpass, - const char *newpass); + const char *newpass, + OSSL_LIB_CTX *libctx, const char *propq); static int newpass_bag(PKCS12_SAFEBAG *bag, const char *oldpass, - const char *newpass); + const char *newpass, + OSSL_LIB_CTX *libctx, const char *propq); static int alg_get(const X509_ALGOR *alg, int *pnid, int *piter, - int *psaltlen); + int *psaltlen, int *cipherid); /* * Change the password on a PKCS#12 structure. @@ -39,12 +41,12 @@ int PKCS12_newpass(PKCS12 *p12, const char *oldpass, const char *newpass) } /* Check the mac */ - - if (!PKCS12_verify_mac(p12, oldpass, -1)) { - ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_VERIFY_FAILURE); - return 0; + if (p12->mac != NULL) { + if (!PKCS12_verify_mac(p12, oldpass, -1)) { + ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_VERIFY_FAILURE); + return 0; + } } - if (!newpass_p12(p12, oldpass, newpass)) { ERR_raise(ERR_LIB_PKCS12, PKCS12_R_PARSE_ERROR); return 0; @@ -59,7 +61,7 @@ static int newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass) { STACK_OF(PKCS7) *asafes = NULL, *newsafes = NULL; STACK_OF(PKCS12_SAFEBAG) *bags = NULL; - int i, bagnid, pbe_nid = 0, pbe_iter = 0, pbe_saltlen = 0; + int i, bagnid, pbe_nid = 0, pbe_iter = 0, pbe_saltlen = 0, cipherid = NID_undef; PKCS7 *p7, *p7new; ASN1_OCTET_STRING *p12_data_tmp = NULL, *macoct = NULL; unsigned char mac[EVP_MAX_MD_SIZE]; @@ -72,27 +74,30 @@ static int newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass) goto err; for (i = 0; i < sk_PKCS7_num(asafes); i++) { p7 = sk_PKCS7_value(asafes, i); + bagnid = OBJ_obj2nid(p7->type); if (bagnid == NID_pkcs7_data) { bags = PKCS12_unpack_p7data(p7); } else if (bagnid == NID_pkcs7_encrypted) { bags = PKCS12_unpack_p7encdata(p7, oldpass, -1); if (!alg_get(p7->d.encrypted->enc_data->algorithm, - &pbe_nid, &pbe_iter, &pbe_saltlen)) + &pbe_nid, &pbe_iter, &pbe_saltlen, &cipherid)) goto err; } else { continue; } if (bags == NULL) goto err; - if (!newpass_bags(bags, oldpass, newpass)) + if (!newpass_bags(bags, oldpass, newpass, + p7->ctx.libctx, p7->ctx.propq)) goto err; /* Repack bag in same form with new password */ if (bagnid == NID_pkcs7_data) p7new = PKCS12_pack_p7data(bags); else - p7new = PKCS12_pack_p7encdata(pbe_nid, newpass, -1, NULL, - pbe_saltlen, pbe_iter, bags); + p7new = PKCS12_pack_p7encdata_ex(pbe_nid, newpass, -1, NULL, + pbe_saltlen, pbe_iter, bags, + p7->ctx.libctx, p7->ctx.propq); if (p7new == NULL || !sk_PKCS7_push(newsafes, p7new)) goto err; sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); @@ -107,11 +112,13 @@ static int newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass) if (!PKCS12_pack_authsafes(p12, newsafes)) goto err; - if (!PKCS12_gen_mac(p12, newpass, -1, mac, &maclen)) - goto err; - X509_SIG_getm(p12->mac->dinfo, NULL, &macoct); - if (!ASN1_OCTET_STRING_set(macoct, mac, maclen)) - goto err; + if (p12->mac != NULL) { + if (!PKCS12_gen_mac(p12, newpass, -1, mac, &maclen)) + goto err; + X509_SIG_getm(p12->mac->dinfo, NULL, &macoct); + if (!ASN1_OCTET_STRING_set(macoct, mac, maclen)) + goto err; + } rv = 1; @@ -130,11 +137,13 @@ err: } static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *oldpass, - const char *newpass) + const char *newpass, + OSSL_LIB_CTX *libctx, const char *propq) { int i; for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) { - if (!newpass_bag(sk_PKCS12_SAFEBAG_value(bags, i), oldpass, newpass)) + if (!newpass_bag(sk_PKCS12_SAFEBAG_value(bags, i), oldpass, newpass, + libctx, propq)) return 0; } return 1; @@ -143,26 +152,37 @@ static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *oldpass, /* Change password of safebag: only needs handle shrouded keybags */ static int newpass_bag(PKCS12_SAFEBAG *bag, const char *oldpass, - const char *newpass) + const char *newpass, + OSSL_LIB_CTX *libctx, const char *propq) { + EVP_CIPHER *cipher = NULL; PKCS8_PRIV_KEY_INFO *p8; X509_SIG *p8new; - int p8_nid, p8_saltlen, p8_iter; + int p8_nid, p8_saltlen, p8_iter, cipherid = 0; const X509_ALGOR *shalg; if (PKCS12_SAFEBAG_get_nid(bag) != NID_pkcs8ShroudedKeyBag) return 1; - if ((p8 = PKCS8_decrypt(bag->value.shkeybag, oldpass, -1)) == NULL) + if ((p8 = PKCS8_decrypt_ex(bag->value.shkeybag, oldpass, -1, + libctx, propq)) == NULL) return 0; X509_SIG_get0(bag->value.shkeybag, &shalg, NULL); - if (!alg_get(shalg, &p8_nid, &p8_iter, &p8_saltlen)) { + if (!alg_get(shalg, &p8_nid, &p8_iter, &p8_saltlen, &cipherid)) { PKCS8_PRIV_KEY_INFO_free(p8); return 0; } - p8new = PKCS8_encrypt(p8_nid, NULL, newpass, -1, NULL, p8_saltlen, - p8_iter, p8); + if (cipherid != NID_undef) { + cipher = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(cipherid), propq); + if (cipher == NULL) { + PKCS8_PRIV_KEY_INFO_free(p8); + return 0; + } + } + p8new = PKCS8_encrypt_ex(p8_nid, cipher, newpass, -1, NULL, p8_saltlen, + p8_iter, p8, libctx, propq); PKCS8_PRIV_KEY_INFO_free(p8); + EVP_CIPHER_free(cipher); if (p8new == NULL) return 0; X509_SIG_free(bag->value.shkeybag); @@ -171,16 +191,69 @@ static int newpass_bag(PKCS12_SAFEBAG *bag, const char *oldpass, } static int alg_get(const X509_ALGOR *alg, int *pnid, int *piter, - int *psaltlen) + int *psaltlen, int *cipherid) { - PBEPARAM *pbe; + int ret = 0, pbenid, aparamtype; + int encnid, prfnid; + const ASN1_OBJECT *aoid; + const void *aparam; + PBEPARAM *pbe = NULL; + PBE2PARAM *pbe2 = NULL; + PBKDF2PARAM *kdf = NULL; - pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), alg->parameter); - if (pbe == NULL) - return 0; - *pnid = OBJ_obj2nid(alg->algorithm); - *piter = ASN1_INTEGER_get(pbe->iter); - *psaltlen = pbe->salt->length; - PBEPARAM_free(pbe); - return 1; + X509_ALGOR_get0(&aoid, &aparamtype, &aparam, alg); + pbenid = OBJ_obj2nid(aoid); + + switch (pbenid) { + case NID_pbes2: + if (aparamtype == V_ASN1_SEQUENCE) + pbe2 = ASN1_item_unpack(aparam, ASN1_ITEM_rptr(PBE2PARAM)); + if (pbe2 == NULL) + goto done; + + X509_ALGOR_get0(&aoid, &aparamtype, &aparam, pbe2->keyfunc); + pbenid = OBJ_obj2nid(aoid); + X509_ALGOR_get0(&aoid, NULL, NULL, pbe2->encryption); + encnid = OBJ_obj2nid(aoid); + + if (aparamtype == V_ASN1_SEQUENCE) + kdf = ASN1_item_unpack(aparam, ASN1_ITEM_rptr(PBKDF2PARAM)); + if (kdf == NULL) + goto done; + + /* Only OCTET_STRING is supported */ + if (kdf->salt->type != V_ASN1_OCTET_STRING) + goto done; + + if (kdf->prf == NULL) { + prfnid = NID_hmacWithSHA1; + } else { + X509_ALGOR_get0(&aoid, NULL, NULL, kdf->prf); + prfnid = OBJ_obj2nid(aoid); + } + *psaltlen = kdf->salt->value.octet_string->length; + *piter = ASN1_INTEGER_get(kdf->iter); + *pnid = prfnid; + *cipherid = encnid; + break; + default: + pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), alg->parameter); + if (pbe == NULL) + goto done; + *pnid = OBJ_obj2nid(alg->algorithm); + *piter = ASN1_INTEGER_get(pbe->iter); + *psaltlen = pbe->salt->length; + *cipherid = NID_undef; + ret = 1; + break; + } + ret = 1; +done: + if (kdf != NULL) + PBKDF2PARAM_free(kdf); + if (pbe2 != NULL) + PBE2PARAM_free(pbe2); + if (pbe != NULL) + PBEPARAM_free(pbe); + return ret; } |