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Diffstat (limited to 'man3/libkeccak_hmac_fast_update.3')
| -rw-r--r-- | man3/libkeccak_hmac_fast_update.3 | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/man3/libkeccak_hmac_fast_update.3 b/man3/libkeccak_hmac_fast_update.3 new file mode 100644 index 0000000..43077d3 --- /dev/null +++ b/man3/libkeccak_hmac_fast_update.3 @@ -0,0 +1,59 @@ +.TH LIBKECCAK_HMAC_FAST_UPDATE 3 LIBKECCAK +.SH NAME +libkeccak_hmac_fast_update - Partially HMAC-hash a message without erasure +.SH SYNOPSIS +.LP +.nf +#include <libkeccak.h> +.P +int +libkeccak_hmac_fast_update(libkeccak_state_t *\fIstate\fP, const char *\fImsg\fP, + size_t \fImsglen\fP); +.fi +.P +Link with +.IR -lkeccak . +.SH DESCRIPTION +The +.BR libkeccak_hmac_fast_update () +function continues (or starts) HMAC-hashing a message. +The current state of the hashing is stored in +.IR *state , +and will be updated. The message specified by the +.I msg +parameter with the byte-size specified by the +.I msglen +parameter, will be hashed. +.PP +The +.BR libkeccak_hmac_fast_update () +function may reallocate the state's message chunk buffer. +When doing so, it attempts to do so as securely as possible, +rather than as fast as possible. +.SH RETURN VALUES +The +.BR libkeccak_hmac_fast_update () +function returns 0 upon successful completion. On error, +-1 is returned and +.I errno +is set to describe the error. +.SH ERRORS +The +.BR libkeccak_hmac_fast_update () +function may reallocate the state's message chunk buffer. +When doing so, it attempts to do so as quickly as possible, +rather than ensuring that the information in the old +allocation is securely removed if a new allocation is required. +.BR realloc (3). +.SH NOTES +Neither parameter by be +.I NULL +or 0. +.SH SEE ALSO +.BR libkeccak_hmac_create (3), +.BR libkeccak_hmac_initialise (3), +.BR libkeccak_hmac_fast_digest (3), +.BR libkeccak_hmac_update (3) +.SH BUGS +Please report bugs to https://github.com/maandree/libkeccak/issues or to +maandree@kth.se |