60 lines
2.6 KiB
C
60 lines
2.6 KiB
C
/*
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* rsa.c
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*
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* Copyright (c) 2018-2019, SciresM.
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* Copyright (c) 2020-2024, DarkMatterCore <pabloacurielz@gmail.com>.
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*
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* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
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*
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* nxdumptool is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* nxdumptool is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#ifndef __RSA_H__
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#define __RSA_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define RSA2048_BYTES 0x100
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#define RSA2048_BITS (RSA2048_BYTES * 8)
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#define RSA2048_SIG_SIZE RSA2048_BYTES
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#define RSA2048_PUBKEY_SIZE RSA2048_BYTES
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/// Verifies a RSA-2048-PSS with SHA-256 signature.
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/// Suitable for NCA and NPDM signatures.
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/// The provided signature and modulus must have sizes of at least RSA2048_SIG_SIZE and RSA2048_PUBKEY_SIZE, respectively.
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bool rsa2048VerifySha256BasedPssSignature(const void *data, size_t data_size, const void *signature, const void *modulus, const void *public_exponent, size_t public_exponent_size);
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/// Verifies a RSA-2048-PKCS#1 v1.5 with SHA-256 signature.
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/// Suitable for ticket and certificate chain signatures.
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/// The provided signature and modulus must have sizes of at least RSA2048_SIG_SIZE and RSA2048_PUBKEY_SIZE, respectively.
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bool rsa2048VerifySha256BasedPkcs1v15Signature(const void *data, size_t data_size, const void *signature, const void *modulus, const void *public_exponent, size_t public_exponent_size);
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/// Performs RSA-2048-OAEP decryption.
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/// Suitable to decrypt the titlekey block from personalized tickets.
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/// The provided signature and modulus must have sizes of at least RSA2048_SIG_SIZE and RSA2048_PUBKEY_SIZE, respectively.
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/// 'label' and 'label_size' arguments are optional -- if not needed, these may be set to NULL and 0, respectively.
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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, \
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size_t private_exponent_size, const void *label, size_t label_size, size_t *out_size);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __RSA_H__ */
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