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Having said that, I recognize that in a SHTF situation many others will be cut off from their access to cigarettes, so there is plenty of barter potential. Bars of soap, and even those little cleaning napkins/wipes that you get at the BBQ restaurants could be very valuable in a SHTF scenario. However, it is also a good idea to store extra ammo in common calibers (9mm, .22, .38, 12-guage shells, etc.) as a potential barter.
After all, a gun without ammo is just an inacurate throwing object. Alcohol could serve a variety of purposes in a SHTF situation.
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In cryptography, SHA-1 (Secure Hash Algorithm 1) is a cryptographic hash function which takes an input and produces a 160-bit (20-byte) hash value known as a message digest - typically rendered as a hexadecimal number, 40 digits long. SHA-1 produces a message digest based on principles similar to those used by Ronald L. SHA-1 differs from SHA-0 only by a single bitwise rotation in the message schedule of its compression function.
If you have disk corruption, if you have DRAM corruption, if you have any kind of problems at all, Git will notice them. This is called a preimage attack and may or may not be practical depending on L and the particular computing environment.
However, a collision, consisting of finding two different messages that produce the same message digest, requires on average only about evaluations using a birthday attack.
In 2005, cryptographers Xiaoyun Wang, Yiqun Lisa Yin, and Hongbo Yu produced collision pairs for SHA-0 and have found algorithms that should produce SHA-1 collisions in far fewer than the originally expected 2 In terms of practical security, a major concern about these new attacks is that they might pave the way to more efficient ones.
SHA-1, which has a 160-bit message digest, was originally thought to have 80-bit strength.
Imagine a neighbor with a large garden and some chickens trading a half dozen eggs and some squash for a box of ammo, or a small bottle of Vodka.
Consider stocking up on the following items, even if you have no plans to use them yourself, for their potential barter value.
It was designed by the United States National Security Agency, and is a U. Rivest of MIT in the design of the MD4 and MD5 message digest algorithms, but has a more conservative design. According to the NSA, this was done to correct a flaw in the original algorithm which reduced its cryptographic security, but they did not provide any further explanation.
The original specification of the algorithm was published in 1993 under the title Secure Hash Standard, FIPS PUB 180, by U. government standards agency NIST (National Institute of Standards and Technology). It was withdrawn by the NSA shortly after publication and was superseded by the revised version, published in 1995 in FIPS PUB 180-1 and commonly designated SHA-1.