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Nettle
nettle
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37540091
Commit
37540091
authored
Sep 26, 2004
by
Niels Möller
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Fixed MAC typos noticed by Linus Nordberg.
Rev: src/nettle/nettle.texinfo:1.27
parent
169282fe
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nettle.texinfo
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37540091
...
...
@@ -1190,11 +1190,11 @@ should also be hard to compute the key given only messages and
corresponding @acronym
{
MAC
}
s.
Keyed hash functions are useful primarily for message authentication,
when
the
Alice and Bob shares a secret: The sender, Alice, computes the
when Alice and Bob shares a secret: The sender, Alice, computes the
@acronym
{
MAC
}
and attaches it to the message. The receiver, Bob, also computes
the @acronym
{
MAC
}
of the message, using the same key, and compares that
to Alice's value. If they match, Bob can be assured that
the message has not been modified on it
'
s way from Alice.
the message has not been modified on its way from Alice.
However, unlike digital signatures, this assurance is not transferable.
Bob can't show the message and the @acronym
{
MAC
}
to a third party and
...
...
@@ -1204,7 +1204,7 @@ sides, and anyone knowing the key can create a correct @acronym{MAC} for
any message. If Bob believes that only he and Alice knows the key, and
he knows that he didn't attach a @acronym
{
MAC
}
to a particular message,
he knows it must be Alice who did it. However, the third party can't
distinguish between @acronym
{
MAC
}
created by Alice and one created by
distinguish between
a
@acronym
{
MAC
}
created by Alice and one created by
Bob.
Keyed hash functions are typically a lot faster than digital signatures
...
...
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