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Generate Authenticode for the entire PE file #604

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Generate Authenticode for the entire PE file #604

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23 changes: 17 additions & 6 deletions pe.c
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Original file line number Diff line number Diff line change
Expand Up @@ -285,14 +285,16 @@ generate_hash(char *data, unsigned int datasize,
goto done;
}

#if 1
}
#else // we have to migrate to doing this later :/
SumOfBytesHashed += hashsize;
}

/* Hash all remaining data */
if (datasize > SumOfBytesHashed) {
/* Hash all remaining data. If SecDir->Size is > 0 this code should not
* be entered. If it is, there are still things to hash. For a file
* without a SecDir, we need to hash what remains. */
if (datasize > SumOfBytesHashed + context->SecDir->Size) {
char padbuf[8];
ZeroMem(padbuf, 8);

hashbase = data + SumOfBytesHashed;
hashsize = datasize - SumOfBytesHashed;

Expand All @@ -306,8 +308,17 @@ generate_hash(char *data, unsigned int datasize,
}

SumOfBytesHashed += hashsize;
hashsize = ALIGN_VALUE(SumOfBytesHashed, 8) - SumOfBytesHashed;

if (hashsize) {
if (!(Sha256Update(sha256ctx, padbuf, hashsize)) ||
!(Sha1Update(sha1ctx, padbuf, hashsize))) {
perror(L"Unable to generate hash\n");
efi_status = EFI_OUT_OF_RESOURCES;
goto done;
}
}
}
#endif

if (!(Sha256Final(sha256ctx, sha256hash)) ||
!(Sha1Final(sha1ctx, sha1hash))) {
Expand Down