Commit 9b29534a authored by Niels Möller's avatar Niels Möller

Fix typos in umac documentation.

parent cf570173
......@@ -2433,17 +2433,17 @@ secret.
The nonce must be at least one octet, and at most 16; nonces shorter
than 16 octets are zero-padded. Nettle's implementation of
@acronym{UMAC} increments the nonce for automatically each message, so
@acronym{UMAC} increments the nonce automatically for each message, so
explicitly setting the nonce for each message is optional. This
auto-increment uses network byte order and it takes the length of the
nonce into acount. E.g., if the initial nonce is ``abc'' (3 octets),
nonce into account. E.g., if the initial nonce is ``abc'' (3 octets),
this value is zero-padded to 16 octets for the first message. For the
next message, the nonce is incremented to ``abd'', and this incremented
value is zero-padded to 16 octets.
@acronym{UMAC} is defined in four variants, for different output sizes:
32 bits (4 octest), 64 bits (8 octets), 96 bits (12 octets) and 128 bits
(16 octets), corresponding to different tradeoffs between speed and
32 bits (4 octets), 64 bits (8 octets), 96 bits (12 octets) and 128 bits
(16 octets), corresponding to different trade-offs between speed and
security. Using a shorter output size sometimes (but not always!) gives
the same result as using a longer output size and truncating the result.
So it is important to use the right variant. For consistency with other
......@@ -2482,7 +2482,7 @@ The size of an UMAC96 digest, 12.
@defvr Constant UMAC128_DIGEST_SIZE
The size of an UMAC128 digest, 16.
@end defvr
@defvr Constant UMAC128_DATA_SIZE
@defvr Constant UMAC_DATA_SIZE
The internal block size of UMAC.
@end defvr
......
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