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Closed 10 years ago.
Please explain what RVA and VA means
See the wikipedia article on COFF (Common Object File Format):
Relative Virtual Addresses (RVAs) are not to be confused with standard virtual addresses. A relative virtual address is the virtual address of an object from the file once it is loaded into memory, minus the base address of the file image. If the file were to be mapped literally from disk to memory, the RVA would be the same as that of the offset into the file, but this is actually quite unusual.
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Closed 9 years ago.
So I have an encrypted text I need to decrypt, where do I start and is there a program that automatically recognizes an algorithm ? Here is a snippet of what I need decrypted:
e302446c4b62c02dc77b3c896ef385c64244a83bd6702b215882d3f1b599ff69
Encrypted text is designed to resemble random numbers. Cryptographic algorithms are designed specifically to keep you from doing exactly what you are trying to do.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
I have a binary-only copy of an application written in Delphi 7; as part of its execution, it writes some data into a text file (not in plain text).
Is it possible to extract the data from the file if I know part of the input data and have a copy of this file? (What if it's encrypted?) I have no idea about the structure of the mentioned file.
And no, I don't have source code for the application -- I think that's obvious.
Yes it's possible, you would have to reverse engineer this application first (IDA, HIEW) and/or debug it while it stores the data to the file, contact me if you need more help.
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Closed 11 years ago.
What is SGA? Can you explain me in a simple manner?
The Oracle documentation does a pretty good job. An excerpt follows:
The SGA comprises a number of memory components, which are pools of
memory used to satisfy a particular class of memory allocation
requests. Examples of memory components include the shared pool (used
to allocate memory for SQL and PL/SQL execution), the java pool (used
for java objects and other java execution memory), and the buffer
cache (used for caching disk blocks).
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Closed 11 years ago.
I came across NUMA-aware allocation in relation to improving the performance of the application. It is something related to Multicore programming. I know NUMA means non-uniform memory access but I am not aware of NUMA-aware allocation.
Do anyone know about this?
NUMA aware allocation is basically the ability to allocate resources in a way such that the NUMA-properties of the system does not result in unnecessarily long commnication paths. I.e memory should be allocated in the RAM connected directly to the CPU where the process needing it runs, etc
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Closed 12 years ago.
<link rev="made" href="mailto:test.com">
It is a way to add semantic information to a page. In this case the email address of the maker.
The value made is not in the HTML spec as a link type, so this appears to really be informational only.
The rev attribute is supposed to be a link back to a parent page (or previous page), it is short for "reverse link".
Read about the rev attribute here and here.
In terms of SEO, I don't believe this example will make a difference.