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Difference between revisions of "8900 File Format"
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| + | #REDIRECT [[S5L File Formats#8900]] |
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| − | This is the file format used by the [[S5L8900]]. Usually this wraps around an [[IMG2 File Format|IMG2]] file. |
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| − | |||
| − | ==Header== |
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| − | typedef struct { |
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| − | uchar magic[4]; // string "8900" |
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| − | uchar version[3]; // string "1.0" |
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| − | uint8 format; // plaintext format is 0x4, encrypted with [[GID-key]] format is 0x3, boot plaintext is 0x2, boot encrypted with [[UID-key]] is 0x1. |
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| − | uint32 unknown1; |
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| − | uint32 sizeOfData; // size of data (ie, filesize - header(0x800) - footer signature(0x80) - footer certificate(0xC0A)) |
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| − | uint32 footerSignatureOffset; // offset to footer signature |
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| − | uint32 footerCertOffset; // offset to footer certificate, from end of header (0x800) |
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| − | uint32 footerCertLen; |
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| − | uchar salt[0x20]; // a seemingly random salt (an awfully big one though... needs more attention) |
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| − | uint16 unknown2; |
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| − | uint16 epoch; // the security epoch of the file |
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| − | uchar headerSignature[0x10]; // encrypt(sha1(header[0:0x40])[0:0x10], key_0x837, zero_iv) |
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| − | uchar padding[0x7B0]; |
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| − | } Apple8900Header; |
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| − | |||
| − | ==Resources== |
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| − | [http://wikee.iphwn.org/s5l8900:8900_format The dev team's wiki page on the topic] |
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Latest revision as of 19:39, 24 August 2010
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