View source for Sha1()

[[Category:Functions]]
== Description ==

FUNCTION: {{function|sha1}}(''string'')

Returns 40 hexadecimal characters which represent a 160-bit cryptographically secure hash of ''string''.

This hash can also be described as a signature, fingerprint, or digest.  sha1() implements SHA-1 as described in FIPS 180-1 and FIPS 180-2.

Related Topics: [[crc32()]], [[digest()]], [[sha0()]], [[unpack()]].

== Examples ==
:> think sha1(abc)
:A9993E364706816ABA3E25717850C26C9CD0D89D
:> think sha1(abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq)
:84983E441C3BD26EBAAE4AA1F95129E5E54670F1

== Server Differences ==

PennMUSH provides [[sha0()]] instead of sha1(). As SHA was being adopted as a standard, it was also being implemented and deployed. SHA-0 is the submitted version and the version adopted in FIPS 180. It is also a de-facto standard in that it has been deployed. FIPS 180 was withdrawn shortly after publication. SHA-1 is the current version adopted in FIPS 180-1 and FIPS 180-2. To obtain SHA-1 on PennMUSH, use the ''sha1'' algorithm in [[digest()]]. SHA-0 and SHA-1 are both available from [[digest()]].

TinyMUX hashes contain upper-case letters while PennMUSH produces lower-case letters.