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d9a7510747
In TLSv1.2 a pre-master secret value is passed from the client to the server encrypted using RSA PKCS1 type 2 padding in a ClientKeyExchange message. As well as the normal formatting rules for RSA PKCA1 type 2 padding TLS imposes some additional rules about what constitutes a well formed key. Specifically it must be exactly the right length and encode the TLS version originally requested by the client (as opposed to the actual negotiated version) in its first two bytes. All of these checks need to be done in constant time and, if they fail, then the TLS implementation is supposed to continue anyway with a random key (and therefore the connection will fail later on). This avoids padding oracle type attacks. This commit implements this within the RSA padding code so that we keep all the constant time padding logic in one place. A later commit will remove it from libssl. Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from https://github.com/openssl/openssl/pull/10411)
121 lines
5.7 KiB
C
121 lines
5.7 KiB
C
/*
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* Generated by util/mkerr.pl DO NOT EDIT
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* Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/err.h>
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#include "prov/providercommonerr.h"
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#ifndef OPENSSL_NO_ERR
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static const ERR_STRING_DATA PROV_str_reasons[] = {
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_AES_KEY_SETUP_FAILED),
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"aes key setup failed"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_BAD_DECRYPT), "bad decrypt"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_BAD_ENCODING), "bad encoding"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_BAD_LENGTH), "bad length"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_BAD_TLS_CLIENT_VERSION),
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"bad tls client version"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_BN_ERROR), "bn error"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_BOTH_MODE_AND_MODE_INT),
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"both mode and mode int"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_CIPHER_OPERATION_FAILED),
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"cipher operation failed"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_FAILED_TO_DECRYPT), "failed to decrypt"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_FAILED_TO_GENERATE_KEY),
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"failed to generate key"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_FAILED_TO_GET_PARAMETER),
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"failed to get parameter"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_FAILED_TO_SET_PARAMETER),
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"failed to set parameter"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INAVLID_UKM_LENGTH),
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"inavlid ukm length"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_AAD), "invalid aad"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_CONSTANT_LENGTH),
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"invalid constant length"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_CUSTOM_LENGTH),
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"invalid custom length"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_DATA), "invalid data"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_DIGEST), "invalid digest"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_ITERATION_COUNT),
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"invalid iteration count"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_IVLEN), "invalid ivlen"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_IV_LENGTH), "invalid iv length"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_KEY), "invalid key"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_KEYLEN), "invalid keylen"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_KEY_LEN), "invalid key len"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_KEY_LENGTH),
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"invalid key length"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_MAC), "invalid mac"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_MODE), "invalid mode"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_MODE_INT), "invalid mode int"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_SALT_LENGTH),
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"invalid salt length"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_SEED_LENGTH),
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"invalid seed length"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_TAG), "invalid tag"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_INVALID_TAGLEN), "invalid taglen"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_CEK_ALG), "missing cek alg"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_CIPHER), "missing cipher"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_CONSTANT), "missing constant"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_KEY), "missing key"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_MAC), "missing mac"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_MESSAGE_DIGEST),
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"missing message digest"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_PASS), "missing pass"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_SALT), "missing salt"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_SECRET), "missing secret"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_SEED), "missing seed"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_SESSION_ID),
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"missing session id"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_TYPE), "missing type"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_MISSING_XCGHASH), "missing xcghash"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_NOT_SUPPORTED), "not supported"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_NOT_XOF_OR_INVALID_LENGTH),
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"not xof or invalid length"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_NO_KEY_SET), "no key set"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_OUTPUT_BUFFER_TOO_SMALL),
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"output buffer too small"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_READ_KEY), "read key"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_TAG_NOTSET), "tag notset"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_TAG_NOT_NEEDED), "tag not needed"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_UNABLE_TO_LOAD_SHA1),
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"unable to load sha1"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_UNABLE_TO_LOAD_SHA256),
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"unable to load sha256"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_UNSUPPORTED_CEK_ALG),
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"unsupported cek alg"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_UNSUPPORTED_KEY_SIZE),
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"unsupported key size"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_UNSUPPORTED_MAC_TYPE),
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"unsupported mac type"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_UNSUPPORTED_NUMBER_OF_ROUNDS),
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"unsupported number of rounds"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_VALUE_ERROR), "value error"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_WRONG_FINAL_BLOCK_LENGTH),
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"wrong final block length"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_WRONG_OUTPUT_BUFFER_SIZE),
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"wrong output buffer size"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_XTS_DATA_UNIT_IS_TOO_LARGE),
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"xts data unit is too large"},
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{ERR_PACK(ERR_LIB_PROV, 0, PROV_R_XTS_DUPLICATED_KEYS),
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"xts duplicated keys"},
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{0, NULL}
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};
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#endif
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int ERR_load_PROV_strings(void)
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{
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#ifndef OPENSSL_NO_ERR
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if (ERR_reason_error_string(PROV_str_reasons[0].error) == NULL)
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ERR_load_strings_const(PROV_str_reasons);
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#endif
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return 1;
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}
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