A practical incremental and one-pass, pure API to the
SHA-1 hash algorithm
(including HMAC support)
with performance close to the fastest implementations available in other languages.
The implementation is made in C with a haskell FFI wrapper that hides the C implementation.
NOTE: This package has been forked off cryptohash-0.11.7 because the cryptohash package has been
deprecated and so this package continues to satisfy the need for a lightweight package
providing the SHA1 hash algorithm without any dependencies on packages other than
base and bytestring.
Consequently, this package can be used as a drop-in replacement for cryptohash's
Crypto.Hash.SHA1 module, though with a clearly smaller footprint.
Changes
0.11.101.0
Add Eq instance for Ctx
add start and startlazy producing Ctx
Remove ineffective RULES
Declare Crypto.Hash.MD5 module -XTrustworthy
Convert to CApiFFI
Added ...AndLength variants of hashing functions:
finalizeAndLength
hashlazyAndLength
hmaclazyAndLength
Minor optimizations in hmac and hash
0.11.100.1
Use __builtin_bswap{32,64} only with GCC >= 4.3
0.11.100.0
new hmac and hmaclazy functions providing HMAC-SHA1
computation conforming to RFC2104 and RFC2202
0.11.7.2
switch to ‘safe’ FFI for calls where overhead becomes negligible
removed inline assembly in favour of portable C constructs
fix 32bit length overflow bug in hash function
fix inaccurate context-size
add context-size verification to incremental API operations
fix unaligned memory-accesses
0.11.7.1
first version forked off cryptohash-0.11.7 release
