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nxdumptool/include/core/rsa.h

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/*
* rsa.c
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*
* Copyright (c) 2018-2019, SciresM.
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* Copyright (c) 2020-2022, DarkMatterCore <pabloacurielz@gmail.com>.
*
* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
*
* nxdumptool is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
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*
* nxdumptool is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
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*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
#ifndef __RSA_H__
#define __RSA_H__
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#ifdef __cplusplus
extern "C" {
#endif
#define RSA2048_BYTES 0x100
#define RSA2048_BITS (RSA2048_BYTES * 8)
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#define RSA2048_SIG_SIZE RSA2048_BYTES
#define RSA2048_PUBKEY_SIZE RSA2048_BYTES
/// Verifies a RSA-2048-PSS with SHA-256 signature.
/// The provided signature and modulus should have sizes of at least RSA2048_SIG_SIZE and RSA2048_PUBKEY_SIZE, respectively.
bool rsa2048VerifySha256BasedPssSignature(const void *data, size_t data_size, const void *signature, const void *modulus, const void *public_exponent, size_t public_exponent_size);
/// Performs RSA-2048-OAEP decryption.
/// Suitable to decrypt the titlekey block from tickets with personalized crypto.
/// The provided signature and modulus should have sizes of at least RSA2048_SIG_SIZE and RSA2048_PUBKEY_SIZE, respectively.
/// The label and label_size arguments are optional - these may be set to NULL and 0 if not needed, respectively.
bool rsa2048OaepDecrypt(void *dst, size_t dst_size, const void *signature, const void *modulus, const void *public_exponent, size_t public_exponent_size, const void *private_exponent, \
size_t private_exponent_size, const void *label, size_t label_size, size_t *out_size);
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#ifdef __cplusplus
}
#endif
#endif /* __RSA_H__ */