/* * Copyright 2019-2021 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 /* * Selectors, named according to the ASN.1 names used throughout libcrypto. * * Note that these are not absolutely mandatory, they are rather a wishlist * of sorts. The provider implementations are free to make choices that * make sense for them, based on these selectors. * For example, the EC backend is likely to really just output the private * key to a PKCS#8 structure, even thought PEM_SELECTION_PrivateKey specifies * the public key as well. This is fine, as long as the corresponding * decoding operation can return an object that contains what libcrypto * expects. */ # define PEM_SELECTION_PUBKEY EVP_PKEY_PUBLIC_KEY # define PEM_SELECTION_PrivateKey EVP_PKEY_KEYPAIR # define PEM_SELECTION_Parameters EVP_PKEY_KEY_PARAMETERS /* * Properties, named according to the ASN.1 names used throughout libcrypto. */ # define PEM_STRUCTURE_PUBKEY "SubjectPublicKeyInfo" # define PEM_STRUCTURE_PrivateKey "PrivateKeyInfo" # define PEM_STRUCTURE_Parameters "type-specific" # define PEM_STRUCTURE_RSAPrivateKey "type-specific" # define PEM_STRUCTURE_RSAPublicKey "type-specific" /* Alternative IMPLEMENT macros for provided encoders */ # define IMPLEMENT_PEM_provided_write_body_vars(type, asn1, pq) \ int ret = 0; \ OSSL_ENCODER_CTX *ctx = \ OSSL_ENCODER_CTX_new_for_##type(x, PEM_SELECTION_##asn1, \ "PEM", PEM_STRUCTURE_##asn1, \ (pq)); \ \ if (OSSL_ENCODER_CTX_get_num_encoders(ctx) == 0) { \ OSSL_ENCODER_CTX_free(ctx); \ goto legacy; \ } # define IMPLEMENT_PEM_provided_write_body_pass() \ ret = 1; \ if (kstr == NULL && cb == NULL) { \ if (u != NULL) { \ kstr = u; \ klen = strlen(u); \ } else { \ cb = PEM_def_callback; \ } \ } \ if (enc != NULL) { \ ret = 0; \ if (OSSL_ENCODER_CTX_set_cipher(ctx, EVP_CIPHER_get0_name(enc), \ NULL)) { \ ret = 1; \ if (kstr != NULL \ && !OSSL_ENCODER_CTX_set_passphrase(ctx, kstr, klen)) \ ret = 0; \ else if (cb != NULL \ && !OSSL_ENCODER_CTX_set_pem_password_cb(ctx, \ cb, u)) \ ret = 0; \ } \ } \ if (!ret) { \ OSSL_ENCODER_CTX_free(ctx); \ return 0; \ } # define IMPLEMENT_PEM_provided_write_body_main(type, outtype) \ ret = OSSL_ENCODER_to_##outtype(ctx, out); \ OSSL_ENCODER_CTX_free(ctx); \ return ret # define IMPLEMENT_PEM_provided_write_body_fallback(str, asn1, \ writename) \ legacy: \ return PEM_ASN1_##writename((i2d_of_void *)i2d_##asn1, str, out, \ x, NULL, NULL, 0, NULL, NULL) # define IMPLEMENT_PEM_provided_write_body_fallback_cb(str, asn1, \ writename) \ legacy: \ return PEM_ASN1_##writename##((i2d_of_void *)i2d_##asn1, str, out, \ x, enc, kstr, klen, cb, u) # define IMPLEMENT_PEM_provided_write_to(name, TYPE, type, str, asn1, \ OUTTYPE, outtype, writename) \ PEM_write_fnsig(name, TYPE, OUTTYPE, writename) \ { \ IMPLEMENT_PEM_provided_write_body_vars(type, asn1, NULL); \ IMPLEMENT_PEM_provided_write_body_main(type, outtype); \ IMPLEMENT_PEM_provided_write_body_fallback(str, asn1, \ writename); \ } \ PEM_write_ex_fnsig(name, TYPE, OUTTYPE, writename) \ { \ IMPLEMENT_PEM_provided_write_body_vars(type, asn1, propq); \ IMPLEMENT_PEM_provided_write_body_main(type, outtype); \ IMPLEMENT_PEM_provided_write_body_fallback(str, asn1, \ writename); \ } # define IMPLEMENT_PEM_provided_write_cb_to(name, TYPE, type, str, asn1, \ OUTTYPE, outtype, writename) \ PEM_write_cb_fnsig(name, TYPE, OUTTYPE, writename) \ { \ IMPLEMENT_PEM_provided_write_body_vars(type, asn1, NULL); \ IMPLEMENT_PEM_provided_write_body_pass(); \ IMPLEMENT_PEM_provided_write_body_main(type, outtype); \ IMPLEMENT_PEM_provided_write_body_fallback_cb(str, asn1, \ writename); \ } \ PEM_write_ex_cb_fnsig(name, TYPE, OUTTYPE, writename) \ { \ IMPLEMENT_PEM_provided_write_body_vars(type, asn1, propq); \ IMPLEMENT_PEM_provided_write_body_pass(); \ IMPLEMENT_PEM_provided_write_body_main(type, outtype); \ IMPLEMENT_PEM_provided_write_body_fallback(str, asn1, \ writename); \ } # ifdef OPENSSL_NO_STDIO # define IMPLEMENT_PEM_provided_write_fp(name, TYPE, type, str, asn1) # define IMPLEMENT_PEM_provided_write_cb_fp(name, TYPE, type, str, asn1) # else # define IMPLEMENT_PEM_provided_write_fp(name, TYPE, type, str, asn1) \ IMPLEMENT_PEM_provided_write_to(name, TYPE, type, str, asn1, FILE, fp, write) # define IMPLEMENT_PEM_provided_write_cb_fp(name, TYPE, type, str, asn1) \ IMPLEMENT_PEM_provided_write_cb_to(name, TYPE, type, str, asn1, FILE, fp, write) # endif # define IMPLEMENT_PEM_provided_write_bio(name, TYPE, type, str, asn1) \ IMPLEMENT_PEM_provided_write_to(name, TYPE, type, str, asn1, BIO, bio, write_bio) # define IMPLEMENT_PEM_provided_write_cb_bio(name, TYPE, type, str, asn1) \ IMPLEMENT_PEM_provided_write_cb_to(name, TYPE, type, str, asn1, BIO, bio, write_bio) # define IMPLEMENT_PEM_provided_write(name, TYPE, type, str, asn1) \ IMPLEMENT_PEM_provided_write_bio(name, TYPE, type, str, asn1) \ IMPLEMENT_PEM_provided_write_fp(name, TYPE, type, str, asn1) # define IMPLEMENT_PEM_provided_write_cb(name, TYPE, type, str, asn1) \ IMPLEMENT_PEM_provided_write_cb_bio(name, TYPE, type, str, asn1) \ IMPLEMENT_PEM_provided_write_cb_fp(name, TYPE, type, str, asn1) # define IMPLEMENT_PEM_provided_rw(name, TYPE, type, str, asn1) \ IMPLEMENT_PEM_read(name, TYPE, str, asn1) \ IMPLEMENT_PEM_provided_write(name, TYPE, type, str, asn1) # define IMPLEMENT_PEM_provided_rw_cb(name, TYPE, type, str, asn1) \ IMPLEMENT_PEM_read(name, TYPE, str, asn1) \ IMPLEMENT_PEM_provided_write_cb(name, TYPE, type, str, asn1)