diff options
Diffstat (limited to 'lib/crypto/doc/src/crypto.xml')
| -rw-r--r-- | lib/crypto/doc/src/crypto.xml | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml index 40f829e704..e88bf01491 100644 --- a/lib/crypto/doc/src/crypto.xml +++ b/lib/crypto/doc/src/crypto.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>1999</year><year>2013</year> + <year>1999</year><year>2014</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -366,7 +366,11 @@ or to one of the functions <seealso marker="#hmac_final-1">hmac_final</seealso> and <seealso marker="#hmac_final_n-2">hmac_final_n</seealso> </p> - + <warning><p>Do not use a <c>Context</c> as argument in more than one + call to hmac_update or hmac_final. The semantics of reusing old contexts + in any way is undefined and could even crash the VM in earlier releases. + The reason for this limitation is a lack of support in the underlying + OpenSSL API.</p></warning> </desc> </func> @@ -552,6 +556,21 @@ </desc> </func> + <func> + <name>rand_seed(Seed) -> ok</name> + <fsummary>Set the seed for random bytes generation</fsummary> + <type> + <v>Seed = binary()</v> + </type> + <desc> + <p>Set the seed for PRNG to the given binary. This calls the + RAND_seed function from openssl. Only use this if the system + you are running on does not have enough "randomness" built in. + Normally this is when <seealso marker="#strong_rand_bytes/1"> + stong_rand_bytes/1</seealso> returns <c>low_entropy</c></p> + </desc> + </func> + <func> <name>rand_uniform(Lo, Hi) -> N</name> <fsummary>Generate a random number</fsummary> |