sha2

  1. sha2
  2. Documentation
    1. Digest Procedures
      1. sha256-primitive
      2. sha384-primitive
      3. sha512-primitive
  3. Usage
  4. Examples
  5. Requirements
  6. Notes
  7. Author
  8. Version history
  9. License

Documentation

Computes SHA2 checksums

Digest Procedures

Any Scheme-object can be the SOURCE for a digest. See message-digest for more information.

sha256-primitive

[procedure] (sha256-primitive)

Returns the 256-bit checksum primitive object.

sha384-primitive

[procedure] (sha384-primitive)

Returns the 384-bit checksum primitive object.

sha512-primitive

[procedure] (sha512-primitive)

Returns the 512-bit checksum primitive object.))

Usage

(require-extension sha2)

Examples

(use sha2 message-digest)

(message-digest-string (sha256-primitive) "abc")
 ;=> "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"

Requirements

message-digest

Notes

Author

Version history

3.1.0
Add block-length. Kon Lovett
3.0.0
Remove deprecated procedures. Kon Lovett
2.1.1
Change deprecated pointer foreign type specifier to scheme-pointer to make it work under chickens newer than 4.6.0.
2.0.1
a message-digest-primitive has no "state". Kon Lovett
2.0.1
fix for #163 (Mario Domenech Goulart)
2.0.0
Initial Chicken 4 release Kon Lovett

License

Copyright (c) 2000-2001, Aaron D. Gifford and Daishi Kato
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of contributors
   may be used to endorse or promote products derived from this software
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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SUCH DAMAGE.