sha1

Documentation

Computes SHA1 (FIPS-180-1) checksums

See message-digest-primitive for more information.

Component export

(use sha1-api)

Note that block-length is informational only.

[procedure] (init CTX)

Initializes a SHA1 CTX, with at least context-size byte size.

[procedure] (update CTX OBJ LEN)

Accumulate LEN bytes from the Scheme OBJ into CTX.

[procedure] (raw-update CTX PTR LEN)

Accumulate LEN bytes from the byte PTR into CTX.

[procedure] (final CTX OBJ)

Finalize the CTX into a Scheme OBJ with at least digest-length byte size. The target is usually a bytevector.

Packaged export

(use sha1-primitive)

[procedure] (sha1-primitive) -> message-digest-primitive

Returns the SHA1 checksum digest primitive object.

(import sha1)

(import sha1-primitive message-digest-byte-vector)

(message-digest-string (sha1-primitive) "abc")
;=> "a9993e364706816aba3e25717850c26c9cd0d89d"

The ...-primitive API is for use with the message-digest extensions. And the ...-api API implements the ...-primitive API. One packages the algorithm as a record, the other a module.

Steve Reid, packaged for Chicken by Peter Bex, C5 by kon lovett

This egg is hosted on the CHICKEN Subversion repository:

If you want to check out the source code repository of this egg and you are not familiar with Subversion, see this page.

 SHA-1 in C
 By Steve Reid <steve@edmweb.com>
 100% Public Domain