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c1b76fb2d9
* signature: add comments to SignatureType enum entries about the exact signing algorithms and padding schemes used. * signature: rename signatureGetSigType() -> signatureGetTypeFromSignedBlob(). * signature: rename signatureIsValidSigType() -> signatureIsValidType(). * signature: rename signatureGetSigSize() -> signatureGetSigSizeByType(). * signature: rename signatureGetBlockSize() -> signatureGetBlockSizeByType(). * signature: rename signatureGetSig() -> signatureGetSigFromSignedBlob(). * signature: rename signatureGetPayload() -> signatureGetPayloadFromSignedBlob(). * signature: add signatureGetBlockSizeFromSignedBlob(). * cert: add more comments to the code. * cert: update code to match signature interface changes. * cert: add CERT_RSA_PUB_EXP_SIZE macro. * cert: change public_exponent field in CertPublicKeyBlockRsa* structs from u32 to u8 array. * cert: add size field to CertificateChain struct. * cert: rename certGetCommonBlock() -> certGetCommonBlockFromSignedCertBlob. * cert: rename certGetPublicKeySize() -> certGetPublicKeySizeByType(). * cert: rename certGetPublicKeyBlockSize() -> certGetPublicKeyBlockSizeByType(). * cert: rename certIsValidCertificate() -> certIsValidSignedCertBlob(). * cert: rename certGetSignedCertificateSize() -> certGetSignedCertBlobSize(). * cert: rename certGetSignedCertificateHashAreaSize() -> certGetSignedCertBlobHashAreaSize(). * cert: remove certGetPublicKey(), certGetPublicExponent() and certCalculateRawCertificateChainSize(). * cert: add certGetPublicKeyTypeFromCommonBlock(), certGetPublicKeyTypeFromSignedCertBlob(), certGetPublicKeySizeFromSignedCertBlob(), certGetPublicKeyBlockSizeFromSignedCertBlob(), certGetPublicKeyFromSignedCertBlob(), certGetPublicExponentFromSignedCertBlob(), certIsValidCertificate() (w/diff func sig), certGetCommonBlockFromCertificate(), certGetPublicKeyTypeFromCertificate(), certGetPublicKeySizeFromCertificate(), certGetPublicKeyBlockSizeFromCertificate(), certGetPublicKeyFromCertificate(), certGetPublicExponentFromCertificate() and certGetHashAreaSizeFromCertificate() functions. * cert: avoid byteswapping the public key type value in multiple places -- it is now only being done in certGetPublicKeyTypeFromCommonBlock(). * cert: call certFreeCertificateChain() in _certRetrieveCertificateChainBySignatureIssuer() before attempting to retrieve the certificate chain. * cert: other minor changes and corrections. * tik: update code to match signature interface changes. * tik: add missing comments to TikPropertyMask enum entries. * tik: add key_generation, enc_titlekey_str and dec_titlekey_str fields to Ticket struct. * tik: update tikRetrieveTicketByRightsId() to also take in a key_generation argument, instead of getting it from the rights ID (which could fail if it's using a key generation lower than HOS 3.0.1) or the key_generation field from the common ticket block (which could fail if the ticket has been tampered by certain tools). * tik: rename tikGetCommonBlock() -> tikGetCommonBlockFromSignedTicketBlob(). * tik: change function signature for tikGetTicketSectionRecordsBlockSize(). * tik: rename tikIsValidTicket() -> tikIsValidSignedTicketBlob(). * tik: rename tikGetSignedTicketSize() -> tikGetSignedTicketBlobSize(). * tik: rename tikGetSignedTicketHashAreaSize() -> tikGetSignedTicketBlobHashAreaSize(). * tik: rename tikGetEncryptedTitleKeyFromTicket() -> tikGetEncryptedTitleKey(). * tik: add tikIsValidTicket() (w/diff func sig), tikGetCommonBlockFromTicket(), tikGetHashAreaSizeFromTicket(), tikFixTamperedCommonTicket(), tikVerifyRsa2048Sha256Signature() and tikDecryptVolatileTicket() functions. Ticket signature verification is only carried out for common tickets in tikFixTamperedCommonTicket(). * tik: change argument order in tikGetTicketEntryOffsetFromTicketList() and tikRetrieveTicketEntryFromTicketBin(). * tik: add TIK_COMMON_CERT_NAME and TIK_DEV_CERT_ISSUER macros. * tik: use a scoped lock when calling tikRetrieveTicketFromEsSaveDataByRightsId(). * tik: simplify certificate chain retrieval steps in tikConvertPersonalizedTicketToCommonTicket() by always using the XS00000020 certificate. * tik: wipe license_type and property_mask fields in tikConvertPersonalizedTicketToCommonTicket(). * tik: other minor changes and corrections. Other changes include: * keys: fix key generation checks in keysGetNcaKeyAreaKeyEncryptionKey() and keysGetTicketCommonKey(). * rsa: move core logic from rsa2048VerifySha256BasedPssSignature() into a new function: rsa2048VerifySha256BasedSignature(). * rsa: add rsa2048VerifySha256BasedPkcs1v15Signature() function.
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) 2020-2023, 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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