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bug753136, bug999893, bug1011090, bug1009785, bug1009794, bug421391, bug1011229, bug1013088, bug996237, bug970539, bug1016567, bug485732, bug334013, bug959864, bug1016836, bug1016811, bug1018536, bug996250, bug1009227, bug963150, bug1007126, bug952572, bug1021102, bug1020395, bug902171
321 lines
7.8 KiB
Groff
321 lines
7.8 KiB
Groff
'\" t
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.\" Title: SIGNVER
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.\" Author: [see the "Authors" section]
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.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
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.\" Date: 5 June 2014
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.\" Manual: NSS Security Tools
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.\" Source: nss-tools
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.\" Language: English
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.\"
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.TH "SIGNVER" "1" "5 June 2014" "nss-tools" "NSS Security Tools"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NAME"
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signver \- Verify a detached PKCS#7 signature for a file\&.
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.SH "SYNOPSIS"
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.HP \w'\fBsigntool\fR\ 'u
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\fBsigntool\fR \-A | \-V \-d\ \fIdirectory\fR [\-a] [\-i\ \fIinput_file\fR] [\-o\ \fIoutput_file\fR] [\-s\ \fIsignature_file\fR] [\-v]
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.SH "STATUS"
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.PP
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This documentation is still work in progress\&. Please contribute to the initial review in
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\m[blue]\fBMozilla NSS bug 836477\fR\m[]\&\s-2\u[1]\d\s+2
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.SH "DESCRIPTION"
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.PP
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The Signature Verification Tool,
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\fBsignver\fR, is a simple command\-line utility that unpacks a base\-64\-encoded PKCS#7 signed object and verifies the digital signature using standard cryptographic techniques\&. The Signature Verification Tool can also display the contents of the signed object\&.
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.SH "OPTIONS"
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.PP
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\-A
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.RS 4
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Displays all of the information in the PKCS#7 signature\&.
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.RE
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.PP
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\-V
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.RS 4
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Verifies the digital signature\&.
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.RE
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.PP
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\-d [sql:]\fIdirectory\fR
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.RS 4
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Specify the database directory which contains the certificates and keys\&.
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.sp
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\fBsignver\fR
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supports two types of databases: the legacy security databases (cert8\&.db,
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key3\&.db, and
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secmod\&.db) and new SQLite databases (cert9\&.db,
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key4\&.db, and
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pkcs11\&.txt)\&. If the prefix
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\fBsql:\fR
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is not used, then the tool assumes that the given databases are in the old format\&.
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.RE
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.PP
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\-a
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.RS 4
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Sets that the given signature file is in ASCII format\&.
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.RE
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.PP
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\-i \fIinput_file\fR
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.RS 4
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Gives the input file for the object with signed data\&.
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.RE
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.PP
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\-o \fIoutput_file\fR
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.RS 4
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Gives the output file to which to write the results\&.
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.RE
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.PP
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\-s \fIsignature_file\fR
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.RS 4
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Gives the input file for the digital signature\&.
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.RE
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.PP
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\-v
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.RS 4
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Enables verbose output\&.
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.RE
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.SH "EXTENDED EXAMPLES"
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.SS "Verifying a Signature"
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.PP
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The
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\fB\-V\fR
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option verifies that the signature in a given signature file is valid when used to sign the given object (from the input file)\&.
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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signver \-V \-s \fIsignature_file\fR \-i \fIsigned_file\fR \-d sql:/home/my/sharednssdb
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signatureValid=yes
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.fi
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.if n \{\
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.RE
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.\}
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.SS "Printing Signature Data"
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.PP
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The
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\fB\-A\fR
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option prints all of the information contained in a signature file\&. Using the
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\fB\-o\fR
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option prints the signature file information to the given output file rather than stdout\&.
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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signver \-A \-s \fIsignature_file\fR \-o \fIoutput_file\fR
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.fi
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.if n \{\
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.RE
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.\}
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.SH "NSS DATABASE TYPES"
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.PP
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NSS originally used BerkeleyDB databases to store security information\&. The last versions of these
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\fIlegacy\fR
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databases are:
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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cert8\&.db for certificates
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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key3\&.db for keys
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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secmod\&.db for PKCS #11 module information
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.RE
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.PP
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BerkeleyDB has performance limitations, though, which prevent it from being easily used by multiple applications simultaneously\&. NSS has some flexibility that allows applications to use their own, independent database engine while keeping a shared database and working around the access issues\&. Still, NSS requires more flexibility to provide a truly shared security database\&.
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.PP
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In 2009, NSS introduced a new set of databases that are SQLite databases rather than BerkleyDB\&. These new databases provide more accessibility and performance:
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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cert9\&.db for certificates
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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key4\&.db for keys
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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pkcs11\&.txt, which is listing of all of the PKCS #11 modules contained in a new subdirectory in the security databases directory
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.RE
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.PP
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Because the SQLite databases are designed to be shared, these are the
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\fIshared\fR
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database type\&. The shared database type is preferred; the legacy format is included for backward compatibility\&.
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.PP
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By default, the tools (\fBcertutil\fR,
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\fBpk12util\fR,
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\fBmodutil\fR) assume that the given security databases follow the more common legacy type\&. Using the SQLite databases must be manually specified by using the
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\fBsql:\fR
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prefix with the given security directory\&. For example:
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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# signver \-A \-s \fIsignature\fR \-d sql:/home/my/sharednssdb
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.fi
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.if n \{\
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.RE
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.\}
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.PP
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To set the shared database type as the default type for the tools, set the
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\fBNSS_DEFAULT_DB_TYPE\fR
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environment variable to
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\fBsql\fR:
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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export NSS_DEFAULT_DB_TYPE="sql"
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.fi
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.if n \{\
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.RE
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.\}
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.PP
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This line can be added to the
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~/\&.bashrc
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file to make the change permanent for the user\&.
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.PP
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Most applications do not use the shared database by default, but they can be configured to use them\&. For example, this how\-to article covers how to configure Firefox and Thunderbird to use the new shared NSS databases:
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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https://wiki\&.mozilla\&.org/NSS_Shared_DB_Howto
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.RE
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.PP
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For an engineering draft on the changes in the shared NSS databases, see the NSS project wiki:
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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https://wiki\&.mozilla\&.org/NSS_Shared_DB
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.RE
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.SH "SEE ALSO"
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.PP
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signtool (1)
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.PP
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The NSS wiki has information on the new database design and how to configure applications to use it\&.
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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Setting up the shared NSS database
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.sp
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https://wiki\&.mozilla\&.org/NSS_Shared_DB_Howto
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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Engineering and technical information about the shared NSS database
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.sp
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https://wiki\&.mozilla\&.org/NSS_Shared_DB
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.RE
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.SH "ADDITIONAL RESOURCES"
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.PP
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For information about NSS and other tools related to NSS (like JSS), check out the NSS project wiki at
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\m[blue]\fBhttp://www\&.mozilla\&.org/projects/security/pki/nss/\fR\m[]\&. The NSS site relates directly to NSS code changes and releases\&.
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.PP
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Mailing lists: https://lists\&.mozilla\&.org/listinfo/dev\-tech\-crypto
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.PP
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IRC: Freenode at #dogtag\-pki
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.SH "AUTHORS"
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.PP
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The NSS tools were written and maintained by developers with Netscape, Red Hat, Sun, Oracle, Mozilla, and Google\&.
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.PP
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Authors: Elio Maldonado <emaldona@redhat\&.com>, Deon Lackey <dlackey@redhat\&.com>\&.
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.SH "LICENSE"
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.PP
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Licensed under the Mozilla Public License, v\&. 2\&.0\&. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla\&.org/MPL/2\&.0/\&.
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.SH "NOTES"
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.IP " 1." 4
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Mozilla NSS bug 836477
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.RS 4
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\%https://bugzilla.mozilla.org/show_bug.cgi?id=836477
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.RE
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