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d0d221e8d4
bug 1013088, bug 996237, bug 970539, bug 1016567, bug 485732, bug 334013, bug 959864, bug 1016836, bug 1016811, bug 1018536, bug 996250, bug 1009227, bug 963150, bug 1007126, bug 1021102.
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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