问题
I am searching for any crypto library that provides SHA-512 hash. Googling around I found some but SHA-512 is absent.
Please suggest.
回答1:
If you are using PHP >= 5.3, the function openssl_digest should do the trick :
echo openssl_digest('glop', 'sha512');
gives me this output (splitted in two lines to get better readibility) :
416b1861951170e1f6eb6543b0dd3d4f1994ce8da7cd82061513d3ddd1dd81111
f4ada5caf6421f1d17425c6f29bdb4a95cf84df9eda4164f5a762acbb490a68
(And you can use openssl_get_md_methods to get the list of available digest methods)
And with PHP 5.1 or 5.2, you have the hash function :
echo hash('sha512', 'glop');
gives me the same output (splitted, too) :
416b1861951170e1f6eb6543b0dd3d4f1994ce8da7cd82061513d3ddd1dd81111
f4ada5caf6421f1d17425c6f29bdb4a95cf84df9eda4164f5a762acbb490a68
And, here, to know the list of available digest methods, you can use hash_algos
回答2:
In PHP 5 >= 5.1.2, PECL hash >= 1.1:
hash('sha512', someStr);
See hash() for more information.
To see all hash algorithms available to you, try:
print_r(hash_algos());
来源：https://stackoverflow.com/questions/1966154/sha-512-library-for-php