Update for OpenSSL 0.9.7. No assembler code at the moment. This

will follow.

1 files changed, 213 insertions, 0 deletions

diff --git a/secure/lib/libssl/man/SSL_CTX_set_default_passwd_cb.3 b/secure/lib/libssl/man/SSL_CTX_set_default_passwd_cb.3
new file mode 100644
index 0000000..c165532
--- /dev/null
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@@ -0,0 +1,213 @@
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+.\" ======================================================================
+.\"
+.IX Title "SSL_CTX_set_default_passwd_cb 3"
+.TH SSL_CTX_set_default_passwd_cb 3 "0.9.7" "2003-01-13" "OpenSSL"
+.UC
+.SH "NAME"
+SSL_CTX_set_default_passwd_cb, SSL_CTX_set_default_passwd_cb_userdata \- set passwd callback for encrypted \s-1PEM\s0 file handling
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+.Vb 1
+\& #include <openssl/ssl.h>
+.Ve
+.Vb 2
+\& void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb);
+\& void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u);
+.Ve
+.Vb 1
+\& int pem_passwd_cb(char *buf, int size, int rwflag, void *userdata);
+.Ve
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+\&\fISSL_CTX_set_default_passwd_cb()\fR sets the default password callback called
+when loading/storing a \s-1PEM\s0 certificate with encryption.
+.PP
+\&\fISSL_CTX_set_default_passwd_cb_userdata()\fR sets a pointer to \fBuserdata\fR which
+will be provided to the password callback on invocation.
+.PP
+The \fIpem_passwd_cb()\fR, which must be provided by the application, hands back the
+password to be used during decryption. On invocation a pointer to \fBuserdata\fR
+is provided. The pem_passwd_cb must write the password into the provided buffer
+\&\fBbuf\fR which is of size \fBsize\fR. The actual length of the password must
+be returned to the calling function. \fBrwflag\fR indicates whether the
+callback is used for reading/decryption (rwflag=0) or writing/encryption
+(rwflag=1).
+.SH "NOTES"
+.IX Header "NOTES"
+When loading or storing private keys, a password might be supplied to
+protect the private key. The way this password can be supplied may depend
+on the application. If only one private key is handled, it can be practical
+to have \fIpem_passwd_cb()\fR handle the password dialog interactively. If several
+keys have to be handled, it can be practical to ask for the password once,
+then keep it in memory and use it several times. In the last case, the
+password could be stored into the \fBuserdata\fR storage and the
+\&\fIpem_passwd_cb()\fR only returns the password already stored.
+.PP
+When asking for the password interactively, \fIpem_passwd_cb()\fR can use
+\&\fBrwflag\fR to check, whether an item shall be encrypted (rwflag=1).
+In this case the password dialog may ask for the same password twice
+for comparison in order to catch typos, that would make decryption
+impossible.
+.PP
+Other items in \s-1PEM\s0 formatting (certificates) can also be encrypted, it is
+however not usual, as certificate information is considered public.
+.SH "RETURN VALUES"
+.IX Header "RETURN VALUES"
+\&\fISSL_CTX_set_default_passwd_cb()\fR and \fISSL_CTX_set_default_passwd_cb_userdata()\fR
+do not provide diagnostic information.
+.SH "EXAMPLES"
+.IX Header "EXAMPLES"
+The following example returns the password provided as \fBuserdata\fR to the
+calling function. The password is considered to be a '\e0' terminated
+string. If the password does not fit into the buffer, the password is
+truncated.
+.PP
+.Vb 6
+\& int pem_passwd_cb(char *buf, int size, int rwflag, void *password)
+\& {
+\&  strncpy(buf, (char *)(password), size);
+\&  buf[size - 1] = '\e0';
+\&  return(strlen(buf));
+\& }
+.Ve
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+ssl(3),
+SSL_CTX_use_certificate(3)