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125 lines
4.0 KiB
C
125 lines
4.0 KiB
C
/* Copyright (C) 2011, 2012 The uOFW team
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See the file COPYING for copying permission.
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*/
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/**
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* ddrdb.h
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*
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* @author _Felix_
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* @version 6.60
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*
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* Reverse engineered ddrdb library of the SCE PSP system.
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*/
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#ifndef DDRDB_H
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#define DDRDB_H
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#include "common.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Maximal size of a source buffer in KB. */
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#define SCE_DDRDB_MAX_BUFFER_SIZE 2048
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/** Size of the added header to the buffer to encrypt. */
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#define SCE_DDRDB_ENCRYPTED_BUFFER_HEADER_SIZE 20
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/** Size of the added header to the buffer to decrypt. */
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#define SCE_DDRDB_DECRYPTED_BUFFER_HEADER_SIZE 20
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/** Size of the added header to the buffer to create a hash for. */
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#define SCE_DDRDB_HASH_BUFFER_HEADER_SIZE 4
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/** Size of the generated hash buffer. */
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#define SCE_DDRDB_HASH_BUFFER_SIZE 20
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/** Size of the generated MUL1 buffer. */
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#define SCE_DDRDB_MUL1_BUFFER_SIZE 60
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/** Size of the generated MUL2 buffer. */
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#define SCE_DDRDB_MUL2_DEST_BUFFER_SIZE 40
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/** Size of source buffer used to generate the MUL2 buffer. */
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#define SCE_DDRDB_MUL2_SOURCE_BUFFER_SIZE 60
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/** Size of source buffer used to check for. */
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#define SCE_DDRDB_SIGVRY_BUFFER_SIZE 100
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/** Size of source buffer used to check for. */
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#define SCE_DDRDB_CERTVRY_BUFFER_SIZE 184
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/** Size of generated Prng buffer. */
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#define SCE_DDRDB_PRNG_BUFFER_SIZE 20
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/**
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* Decrypt a buffer.
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*
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* @note The 20-byte header for buf into sema function:
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* header[0] = 5;
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* header[1] = 0;
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* header[2] = 0;
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* header[3] = 0xB;
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* header[4] = size;
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*
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* @param buf The buffer to decrypt.
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* @param size The size of the buffer. Max size = 2048 Bytes.
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*
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* @return 0 on success, otherwise < 0.
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*/
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int sceDdrdbDecrypt(u8 buf[], int size);
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/**
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* Encrypt a buffer.
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*
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* @note The 20-byte header for buf into sema function:
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* header[0] = 4;
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* header[1] = 0;
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* header[2] = 0;
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* header[3] = 0xB;
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* header[4] = size;
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*
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* @param buf The buffer to encrypt.
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* @param size The size of the buffer. Max size = 2048 Bytes.
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*
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* @return 0 on success, otherwise < 0.
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*/
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int sceDdrdbEncrypt(u8 buf[], int size);
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/**
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* Generate a SHA-1 hash buffer of the source buffer.
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*
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* @note The 4-byte header for srcBuf into sema function:
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* header[0] = size;
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*
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* @param buf The source buffer to generate the hash from.
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* @param size The size of source buffer. Max size = 2048 Bytes
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* @param hash The destination buffer for the hash. Size = 20.
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*
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* @return 0 on success, otherwise < 0.
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*/
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int sceDdrdbHash(u8 srcBuf[], int size, u8 hash[SCE_DDRDB_HASH_BUFFER_SIZE]);
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int sceDdrdbMul1(u8 destBuf[SCE_DDRDB_MUL1_BUFFER_SIZE]);
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int sceDdrdbMul2(u8 srcBuf[20], u8 srcBuf1[40], u8 destBuf[SCE_DDRDB_MUL2_DEST_BUFFER_SIZE]);
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int sceDdrdbSigvry(u8 srcBuf0[40], u8 sha1[20], u8 srcBuf2[40]);
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int sceDdrdbCertvry(u8 buf[SCE_DDRDB_CERTVRY_BUFFER_SIZE]);
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int sceDdrdbSiggen(u8 inbuf[32], u8 sha1[20], u8 outbuf[40]);
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/**
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* Generate a 20-Byte pseudorandom number.
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*
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* @note No need to seed it as KIRK is initialized automatically on boot.
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*
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* @param buf The destination buffer for the pseudorandom number. Size = 20.
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*
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* @return 0 on success, otherwise < 0.
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*/
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int sceDdrdbPrngen(u8 buf[SCE_DDRDB_PRNG_BUFFER_SIZE]);
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int sceDdrdb_F013F8BF(u8 srcBuf1[20], u8 srcBuf2[40]);
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#ifdef __cplusplus
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}
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#endif
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#endif /* DDRDB_H */
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