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Function List:

C++ API

: hash (hfun, str)

Calculate the hash value of the string str using the hash function hfun.

The available hash functions are given in the table below.

‘MD2’

Message-Digest Algorithm 2 (RFC 1319).

‘MD4’

Message-Digest Algorithm 4 (RFC 1320).

‘MD5’

Message-Digest Algorithm 5 (RFC 1321).

‘SHA1’

Secure Hash Algorithm 1 (RFC 3174)

‘SHA224’

Secure Hash Algorithm 2 (224 Bits, RFC 3874)

‘SHA256’

Secure Hash Algorithm 2 (256 Bits, RFC 6234)

‘SHA384’

Secure Hash Algorithm 2 (384 Bits, RFC 6234)

‘SHA512’

Secure Hash Algorithm 2 (512 Bits, RFC 6234)

To calculate for example the MD5 hash value of the string "abc" the hash function is called as follows: 

hash ("md5", "abc")
    -| ans = 900150983cd24fb0d6963f7d28e17f72

For the same string, the SHA-1 hash value is calculated with: 

hash ("sha1", "abc")
    -| ans = a9993e364706816aba3e25717850c26c9cd0d89d

And to compute the hash value of a file, e.g., file = "file.txt", call hash in combination with the fileread: 

hash ("md5", fileread (file));

Package: octave