diff options
Diffstat (limited to 'secure/lib/libcrypto/man/RAND_set_rand_method.3')
| -rw-r--r-- | secure/lib/libcrypto/man/RAND_set_rand_method.3 | 47 |
1 files changed, 35 insertions, 12 deletions
diff --git a/secure/lib/libcrypto/man/RAND_set_rand_method.3 b/secure/lib/libcrypto/man/RAND_set_rand_method.3 index 3c28fed..d38d589 100644 --- a/secure/lib/libcrypto/man/RAND_set_rand_method.3 +++ b/secure/lib/libcrypto/man/RAND_set_rand_method.3 @@ -1,5 +1,5 @@ .\" Automatically generated by Pod::Man version 1.15 -.\" Tue Jul 30 09:21:48 2002 +.\" Mon Jan 13 19:28:29 2003 .\" .\" Standard preamble: .\" ====================================================================== @@ -138,7 +138,7 @@ .\" ====================================================================== .\" .IX Title "RAND_set_rand_method 3" -.TH RAND_set_rand_method 3 "0.9.6e" "2000-04-13" "OpenSSL" +.TH RAND_set_rand_method 3 "0.9.7" "2003-01-13" "OpenSSL" .UC .SH "NAME" RAND_set_rand_method, RAND_get_rand_method, RAND_SSLeay \- select \s-1RAND\s0 method @@ -148,24 +148,32 @@ RAND_set_rand_method, RAND_get_rand_method, RAND_SSLeay \- select \s-1RAND\s0 me \& #include <openssl/rand.h> .Ve .Vb 1 -\& void RAND_set_rand_method(RAND_METHOD *meth); +\& void RAND_set_rand_method(const RAND_METHOD *meth); .Ve .Vb 1 -\& RAND_METHOD *RAND_get_rand_method(void); +\& const RAND_METHOD *RAND_get_rand_method(void); .Ve .Vb 1 \& RAND_METHOD *RAND_SSLeay(void); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" -A \fB\s-1RAND_METHOD\s0\fR specifies the functions that OpenSSL uses for random -number generation. By modifying the method, alternative -implementations such as hardware RNGs may be used. Initially, the -default is to use the OpenSSL internal implementation. \fIRAND_SSLeay()\fR -returns a pointer to that method. +A \fB\s-1RAND_METHOD\s0\fR specifies the functions that OpenSSL uses for random number +generation. By modifying the method, alternative implementations such as +hardware RNGs may be used. \s-1IMPORTANT:\s0 See the \s-1NOTES\s0 section for important +information about how these \s-1RAND\s0 \s-1API\s0 functions are affected by the use of +\&\fB\s-1ENGINE\s0\fR \s-1API\s0 calls. .PP -\&\fIRAND_set_rand_method()\fR sets the \s-1RAND\s0 method to \fBmeth\fR. -\&\fIRAND_get_rand_method()\fR returns a pointer to the current method. +Initially, the default \s-1RAND_METHOD\s0 is the OpenSSL internal implementation, as +returned by \fIRAND_SSLeay()\fR. +.PP +\&\fIRAND_set_default_method()\fR makes \fBmeth\fR the method for \s-1PRNG\s0 use. \fB\s-1NB\s0\fR: This is +true only whilst no \s-1ENGINE\s0 has been set as a default for \s-1RAND\s0, so this function +is no longer recommended. +.PP +\&\fIRAND_get_default_method()\fR returns a pointer to the current \s-1RAND_METHOD\s0. +However, the meaningfulness of this result is dependant on whether the \s-1ENGINE\s0 +\&\s-1API\s0 is being used, so this function is no longer recommended. .SH "THE RAND_METHOD STRUCTURE" .IX Header "THE RAND_METHOD STRUCTURE" .Vb 9 @@ -187,10 +195,25 @@ Each component may be \s-1NULL\s0 if the function is not implemented. .IX Header "RETURN VALUES" \&\fIRAND_set_rand_method()\fR returns no value. \fIRAND_get_rand_method()\fR and \&\fIRAND_SSLeay()\fR return pointers to the respective methods. +.SH "NOTES" +.IX Header "NOTES" +As of version 0.9.7, \s-1RAND_METHOD\s0 implementations are grouped together with other +algorithmic APIs (eg. \s-1RSA_METHOD\s0, \s-1EVP_CIPHER\s0, etc) in \fB\s-1ENGINE\s0\fR modules. If a +default \s-1ENGINE\s0 is specified for \s-1RAND\s0 functionality using an \s-1ENGINE\s0 \s-1API\s0 function, +that will override any \s-1RAND\s0 defaults set using the \s-1RAND\s0 \s-1API\s0 (ie. +\&\fIRAND_set_rand_method()\fR). For this reason, the \s-1ENGINE\s0 \s-1API\s0 is the recommended way +to control default implementations for use in \s-1RAND\s0 and other cryptographic +algorithms. .SH "SEE ALSO" .IX Header "SEE ALSO" -rand(3) +rand(3), engine(3) .SH "HISTORY" .IX Header "HISTORY" \&\fIRAND_set_rand_method()\fR, \fIRAND_get_rand_method()\fR and \fIRAND_SSLeay()\fR are available in all versions of OpenSSL. +.PP +In the engine version of version 0.9.6, \fIRAND_set_rand_method()\fR was altered to +take an \s-1ENGINE\s0 pointer as its argument. As of version 0.9.7, that has been +reverted as the \s-1ENGINE\s0 \s-1API\s0 transparently overrides \s-1RAND\s0 defaults if used, +otherwise \s-1RAND\s0 \s-1API\s0 functions work as before. \fIRAND_set_rand_engine()\fR was also +introduced in version 0.9.7. |
